PATENT DOCUMENT

Publication Number: US-11108130-B1
Application Number: US-202016800920-A
Country: US
Kind Code: B1

Title: Electronic device slot antennas

Abstract:
An electronic device such as a desktop computer may have a housing with a conductive housing wall and a display mounted to the housing opposite the conductive housing wall. A conductive tongue may extend through an opening in the housing wall to secure the housing to a hinge barrel on a desktop stand. A slot antenna may be formed from a slot element in the conductive tongue. The antenna may be fed by a flexible printed circuit coupled across the slot element or by a feed printed circuit in the housing that is coupled to the conductive tongue by a conductive screw. A conductive sleeve may be placed over the conductive tongue. The stand may be replaced with a mounting bracket.

Claims:
What is claimed is: 
     
       1. An electronic device configured to be mounted to a stand having a hinge barrel, the electronic device comprising:
 a housing having a conductive housing wall, wherein the conductive housing wall comprises an opening; 
 a display mounted to the housing opposite the conductive housing wall; 
 a conductive structure that protrudes through the opening, wherein the conductive structure has a first end within the housing and an opposing second end that is configured to be coupled to the hinge barrel of the stand; and 
 an antenna in the conductive structure. 
 
     
     
       2. The electronic device of  claim 1 , wherein the antenna comprises a slot antenna having a radiating slot element in the conductive structure. 
     
     
       3. The electronic device of  claim 2 , further comprising:
 an additional slot antenna having an additional radiating slot element in the conductive structure. 
 
     
     
       4. The electronic device of  claim 3 , wherein the conductive structure has opposing first and second edges that extend in parallel from the first end to the second end, the radiating slot element has an open end at the first edge, and the additional radiating slot element has an open end at the second edge. 
     
     
       5. The electronic device of  claim 2 , wherein the radiating slot element has a first electromagnetic mode configured to radiate in a first frequency band and a second electromagnetic mode configured to radiate in a second frequency band that is higher than the first frequency band. 
     
     
       6. The electronic device of  claim 5 , wherein the first frequency band comprises a 2.4 GHz wireless local area network (WLAN) band and the second frequency band comprises a 5 GHz WLAN band. 
     
     
       7. The electronic device of  claim 5 , further comprising:
 a capacitor coupled across the radiating slot element, wherein the capacitor is configured to tune both the first and second electromagnetic modes. 
 
     
     
       8. The electronic device of  claim 2 , further comprising:
 a conductive sleeve having a cavity, the conductive structure being mounted within the cavity, and the conductive sleeve having a dielectric antenna window aligned with the radiating slot element. 
 
     
     
       9. The electronic device of  claim 2 , wherein the conductive structure comprises:
 a support plate at the first end and coupled to an interior surface of the conductive housing wall; and 
 a conductive tongue that extends from the support plate to the second end, wherein the conductive tongue protrudes through the opening, the slot radiating element being located in the conductive tongue. 
 
     
     
       10. The electronic device of  claim 9 , wherein the conductive tongue has a first surface, the conductive tongue has a second surface opposite the first surface, and the slot element extends from the first surface to the second surface. 
     
     
       11. The electronic device of  claim 10 , further comprising a first dielectric cover layer on the first surface and a second dielectric cover layer on the second surface. 
     
     
       12. The electronic device of  claim 9 , wherein the conductive structure and the housing are rotatable with respect to the stand about a hinge axis when the second end of the conductive structure is coupled to the hinge barrel, the hinge axis extending through the conductive tongue. 
     
     
       13. The electronic device of  claim 9 , further comprising:
 a printed circuit having ground traces and signal traces, wherein the ground traces are electrically coupled to the support plate; 
 a transmission line having a ground conductor coupled to the ground traces and having a signal conductor coupled to the signal traces; and 
 a conductive screw having a head portion coupled to the signal traces and having a tip coupled to the conductive tongue at a side of the radiating slot element opposite the conductive housing wall, wherein the conductive screw has a shaft portion that extends from the head portion, through an opening in the printed circuit, through the opening in the conductive housing wall, and through an opening in the conductive tongue to the side of the radiating slot element opposite the conductive housing wall. 
 
     
     
       14. Apparatus comprising:
 a stand having a base portion configured to rest on a surface and having a neck portion extending from the base portion; 
 a hinge barrel on the neck portion of the stand; 
 a housing having a conductive housing wall with an opening; 
 a display mounted to the housing opposite the conductive housing wall; 
 a conductive tongue that protrudes through the opening in the conductive housing wall, wherein the conductive tongue is coupled to the hinge barrel, the conductive tongue and the housing being rotatable with respect to the stand about a hinge axis running through the hinge barrel; and 
 a slot antenna having a slot element in the conductive tongue. 
 
     
     
       15. The apparatus of  claim 14 , further comprising:
 a flexible printed circuit that bridges the slot element; 
 ground traces on the flexible printed circuit that are coupled to the conductive tongue at a first side of the slot element; and 
 signal traces on the flexible printed circuit that are coupled to the conductive tongue at a second side of the slot element, the ground traces and the signal traces being configured to feed radio-frequency signals for the slot antenna. 
 
     
     
       16. The apparatus of  claim 14 , further comprising:
 a conductive sleeve having a cavity, wherein the conductive tongue is located within the cavity; and 
 a dielectric antenna window in the conductive sleeve and aligned with the slot element. 
 
     
     
       17. The apparatus of  claim 16 , further comprising:
 a dielectric liner interposed between the flexible printed circuit and the conductive sleeve. 
 
     
     
       18. The apparatus of  claim 17 , further comprising:
 a notch in the conductive tongue and configured to receive the flexible printed circuit. 
 
     
     
       19. An electronic device comprising:
 a housing having a conductive housing wall that forms a first face of the electronic device, wherein the conductive housing wall comprises an opening; 
 a display mounted to the housing, wherein the display forms a second face of the electronic device opposite the conductive housing wall; 
 a mounting bracket coupled to the conductive housing wall, wherein the mounting bracket is separated from the conductive housing wall by a cavity; 
 a conductive structure having a support plate coupled to the conductive housing wall at an interior of the housing and having a conductive tongue, wherein the conductive tongue extends from the support plate and protrudes through the opening and into the cavity; and 
 a slot antenna having a slot element in the conductive tongue. 
 
     
     
       20. The electronic device of  claim 19 , wherein the mounting bracket comprises a flat display mounting interface (FDMI) compliant mounting bracket.

Description:
BACKGROUND 
     This relates to electronic devices, and more particularly, to electronic devices with wireless communications circuitry. 
     Electronic devices are often provided with wireless communications capabilities. An electronic device with wireless communications capabilities has wireless communications circuitry with one or more antennas. Wireless transceiver circuitry in the wireless communications circuitry uses the antennas to transmit and receive radio-frequency signals. 
     It can be challenging to form a satisfactory antenna for an electronic device. For example, conductive housing structures for the electronic device can block or shield radio-frequency signals conveyed by the antenna. If care is not taken, the antenna may not perform satisfactorily, may be overly complex to manufacture, or may be difficult to integrate into a device. 
     SUMMARY 
     An electronic device such as a desktop computer may have a main body portion with a housing. The housing may have a conductive housing wall that forms a first face of the electronic device. A display may be mounted to the housing and may form a second face of the electronic device opposite the first face. The conductive housing wall may have an opening. 
     The electronic device may be mountable to a stand having a base portion, a neck portion, and a hinge barrel on the neck portion. The electronic device may include a conductive structure that secures the main housing portion to the hinge barrel of the stand. The conductive structure may include a support plate mounted to the conductive housing wall at an interior of the housing. The conductive structure may include a conductive tongue that extends from the support plate, that protrudes through the opening, and that has an end that is securable (mountable) to the hinge barrel of the stand. When the end of the conductive tongue is secured to the hinge barrel of the stand, the stand may hold the main body portion in place above an underlying surface such as a tabletop. The conductive tongue and the main body portion may be rotatable with respect to the stand about a hinge axis extending through the conductive tongue and the hinge barrel. 
     Antennas for the electronic device may be formed in the conductive tongue of the conductive structure. The antennas may include a single closed slot antenna or a pair of open slot antennas. The antenna(s) may have a radiating slot element cut into the conductive tongue. The slot element may be fed by feed printed circuit mounted in the housing. A conductive screw may couple signal traces on the feed printed circuit to the conductive tongue at a side of the slot element opposite the conductive housing wall. In another suitable arrangement, the slot element may be fed by a flexible printed circuit that is received by a notch in the conductive tongue. The flexible printed circuit may bridge the slot element. Signal and ground traces on the flexible printed circuit may be coupled to the conductive tongue at opposing sides of the slot element. A conductive sleeve may surround the conductive tongue to hide the antenna and to protect the antenna from damage. A dielectric liner may be interposed between the flexible printed circuit and the conductive sleeve. 
     If desired, a mounting bracket may be attached to the conductive housing wall. The mounting bracket may be separated from the conductive housing wall by a cavity. The conductive tongue may protrude into the cavity. The antenna in the conductive tongue may radiate out of the cavity. The mounting bracket may be a flat display mounting interface (FDMI) compliant mounting bracket, for example. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic diagram of an illustrative electronic device in accordance with some embodiments. 
         FIG. 2  is a rear perspective view of an illustrative electronic device in accordance with some embodiments. 
         FIG. 3  is a top-down view of an illustrative closed slot antenna in accordance with some embodiments. 
         FIG. 4  is a top-down view of illustrative open slot antennas in accordance with some embodiments. 
         FIG. 5  is a cross-sectional side view showing how a slot antenna may be formed in a conductive structure that couples an electronic device housing to a stand in accordance with some embodiments. 
         FIG. 6  is a front view of an illustrative flexible printed circuit that may be used to feed a slot antenna of the type shown in  FIG. 5  in accordance with some embodiments. 
         FIG. 7  is an exploded perspective view of an illustrative slot antenna formed in a conductive tongue that is inserted into a conductive sleeve in accordance with some embodiments. 
         FIG. 8  is a rear view of an illustrative electronic device having a slot antenna located in a cavity between an electronic device housing and a mounting bracket in accordance with some embodiments. 
         FIG. 9  is a side view of an illustrative electronic device having a slot antenna located in a cavity between an electronic device housing and a mounting bracket in accordance with some embodiments. 
     
    
    
     DETAILED DESCRIPTION 
     An electronic device such as electronic device  10  of  FIG. 1  may be provided with wireless circuitry. The wireless circuitry may include antennas such as wireless local area network antennas or other antennas. Electronic device  10  may be a computing device such as a laptop computer, a desktop computer, a computer monitor containing an embedded computer, a tablet computer, a cellular telephone, a media player, or other handheld or portable electronic device, a smaller device such as a wristwatch device, a pendant device, a headphone or earpiece device, a device embedded in eyeglasses or other equipment worn on a user&#39;s head, or other wearable or miniature device, a television, a computer display that does not contain an embedded computer, a gaming device, a navigation device, an embedded system such as a system in which electronic equipment with a display is mounted in a kiosk or automobile, a wireless internet-connected voice-controlled speaker, a wireless base station or access point, equipment that implements the functionality of two or more of these devices, or other electronic equipment. An arrangement in which device  10  is a desktop computer having a computer display (monitor) embedded therein is described herein as an example. 
     As shown in  FIG. 1 , device  10  may include control circuitry  12 . Control circuitry  12  may include storage such as storage circuitry  16 . Storage circuitry  16  may include hard disk drive storage, nonvolatile memory (e.g., flash memory or other electrically-programmable-read-only memory configured to form a solid-state drive), volatile memory (e.g., static or dynamic random-access-memory), etc. 
     Control circuitry  12  may include processing circuitry such as processing circuitry  14 . Processing circuitry  14  may be used to control the operation of device  10 . Processing circuitry  14  may include on one or more microprocessors, microcontrollers, digital signal processors, host processors, baseband processor integrated circuits, application specific integrated circuits, central processing units (CPUs), etc. Control circuitry  12  may be configured to perform operations in device  10  using hardware (e.g., dedicated hardware or circuitry), firmware, and/or software. Software code for performing operations in device  10  may be stored on storage circuitry  16  (e.g., storage circuitry  16  may include non-transitory (tangible) computer readable storage media that stores the software code). The software code may sometimes be referred to as program instructions, software, data, instructions, or code. Software code stored on storage circuitry  16  may be executed by processing circuitry  14 . 
     Control circuitry  12  may be used to run software on device  10  such as satellite navigation applications, internet browsing applications, voice-over-internet-protocol (VOIP) telephone call applications, email applications, media playback applications, operating system functions, etc. To support interactions with external equipment, control circuitry  12  may be used in implementing communications protocols. Communications protocols that may be implemented using control circuitry  12  include internet protocols, wireless local area network (WLAN) protocols (e.g., IEEE 802.11 protocols—sometimes referred to as Wi-Fi®), protocols for other short-range wireless communications links such as the Bluetooth® protocol or other wireless personal area network (WPAN) protocols, IEEE 802.11ad protocols, cellular telephone protocols, MIMO protocols, antenna diversity protocols, satellite navigation system protocols (e.g., global positioning system (GPS) protocols, global navigation satellite system (GLONASS) protocols, etc.), or any other desired communications protocols. Each communications protocol may be associated with a corresponding radio access technology (RAT) that specifies the physical connection methodology used in implementing the protocol. 
     Device  10  may include input-output circuitry  18 . Input-output circuitry  18  may include input-output devices  20 . Input-output devices  20  may be used to allow data to be supplied to device  10  and to allow data to be provided from device  10  to external devices. Input-output devices  20  may include user interface devices, data port devices, and other input-output components. For example, input-output devices  20  may include touch sensors, displays, light-emitting components such as displays without touch sensor capabilities, buttons (mechanical, capacitive, optical, etc.), scrolling wheels, touch pads, key pads, keyboards, microphones, cameras, buttons, speakers, status indicators, audio jacks and other audio port components, digital data port devices, motion sensors (accelerometers, gyroscopes, and/or compasses that detect motion), capacitance sensors, proximity sensors, magnetic sensors, force sensors (e.g., force sensors coupled to a display to detect pressure applied to the display), etc. In some configurations, keyboards, headphones, displays, pointing devices such as trackpads, mice, and joysticks, and other input-output devices may be coupled to device  10  using wired or wireless connections (e.g., some of input-output devices  20  may be peripherals that are coupled to a main processing unit or other portion of device  10  via a wired or wireless link). 
     Input-output circuitry  18  may include wireless circuitry  22  to support wireless communications. Wireless circuitry  22  may include radio-frequency (RF) transceiver circuitry  24  formed from one or more integrated circuits, power amplifier circuitry, low-noise input amplifiers, passive RF components, one or more antennas such as antenna  40 , transmission lines such as transmission line  26 , and other circuitry for handling RF wireless signals. Wireless signals can also be sent using light (e.g., using infrared communications). While control circuitry  12  is shown separately from wireless circuitry  22  in the example of  FIG. 1  for the sake of clarity, wireless circuitry  22  may include processing circuitry that forms a part of processing circuitry  14  and/or storage circuitry that forms a part of storage circuitry  16  of control circuitry  12  (e.g., portions of control circuitry  12  may be implemented on wireless circuitry  22 ). As an example, control circuitry  12  (e.g., processing circuitry  14 ) may include baseband processor circuitry or other control components that form a part of wireless circuitry  22 . 
     Radio-frequency transceiver circuitry  24  may include wireless local area network transceiver circuitry that handles 2.4 GHz and 5 GHz bands for Wi-Fi® (IEEE 802.11) or other WLAN communications bands and may include wireless personal area network transceiver circuitry that handles the 2.4 GHz Bluetooth® communications band or other WPAN communications bands. If desired, radio-frequency transceiver circuitry  24  may handle other bands such as cellular telephone bands, near-field communications bands (e.g., at 13.56 MHz), millimeter or centimeter wave bands (e.g., communications at 10-300 GHz), and/or other communications bands. Configurations in which radio-frequency transceiver circuitry  24  handles wireless local area network bands (e.g., at 2.4 GHz and 5 GHz) may sometimes be described herein as an example. In general, however, radio-frequency transceiver circuitry  24  may be configured to cover any suitable communications bands of interest. 
     Wireless circuitry  22  may include one or more antennas such as antenna  40 . Antennas such as antenna  40  may be formed using any suitable antenna types. For example, antennas in device  10  may include antennas with resonating elements that are formed from loop antenna structures, patch antenna structures, inverted-F antenna structures, slot antenna structures, planar inverted-F antenna structures, helical antenna structures, monopole antennas, dipoles, hybrids of these designs, etc. Parasitic elements may be included in antennas  40  to adjust antenna performance. Antenna  40  may be provided with a conductive cavity that backs the antenna resonating element of antenna  40  (e.g., antenna  40  may be a cavity-backed antenna such as a cavity-backed slot antenna). In some configurations, device  10  may have isolation elements between respective antennas  40  to help avoid antenna-to-antenna cross-talk. Different types of antennas may be used for different bands and combinations of bands. For example, one type of antenna may be used in forming a local wireless link antenna and another type of antenna may be used in forming a remote wireless link antenna. In some configurations, different antennas may be used in handling different bands for radio-frequency transceiver circuitry  24 . Each antenna  40  may cover one or more bands. For example, antennas  40  may be single band wireless local area network antennas or dual band wireless local area network antennas. 
     As shown in  FIG. 1 , radio-frequency transceiver circuitry  24  may be coupled to antenna feed  32  of antenna  40  using transmission line path  26 . Antenna feed  32  may include a positive antenna feed terminal such as positive antenna feed terminal  34  and may include a ground antenna feed terminal such as ground antenna feed terminal  36 . Transmission line path  26  may be formed from metal traces on a printed circuit, cables, or other conductive structures. Transmission line path  26  may have a positive transmission line signal path such as path  28  that is coupled to positive antenna feed terminal  34 . Transmission line path  26  may have a ground transmission line signal path such as path  30  that is coupled to ground antenna feed terminal  36 . Path  28  may sometimes be referred to herein as signal conductor  28  and path  30  may sometimes be referred to herein as ground conductor  30 . 
     Transmission line path  26  may include transmission lines that are used to route antenna signals within device  10 . Transmission lines in device  10  may include coaxial cables, microstrip transmission lines, stripline transmission lines, edge-coupled microstrip transmission lines, edge-coupled stripline transmission lines, transmission lines formed from combinations of transmission lines of these types, etc. Transmission lines in device  10  such as transmission lines in transmission line path  26  may be integrated into rigid and/or flexible printed circuit boards. In one suitable arrangement, transmission line paths such as transmission line path  26  may also include transmission line conductors (e.g., signal conductors  28  and ground conductors  30 ) integrated within multilayer laminated structures (e.g., layers of a conductive material such as copper and a dielectric material such as a resin that are laminated together without intervening adhesive). The multilayer laminated structures may, if desired, be folded or bent in multiple dimensions (e.g., two or three dimensions) and may maintain a bent or folded shape after bending (e.g., the multilayer laminated structures may be folded into a particular three-dimensional shape to route around other device components and may be rigid enough to hold its shape after folding without being held in place by stiffeners or other structures). All of the multiple layers of the laminated structures may be batch laminated together (e.g., in a single pressing process) without adhesive (e.g., as opposed to performing multiple pressing processes to laminate multiple layers together with adhesive). 
     Filter circuitry, switching circuitry, impedance matching circuitry, and other circuitry may be interposed within the paths formed using transmission line path  26  and/or circuits such as these may be incorporated into antenna  40  (e.g., to support antenna tuning, to support operation in desired frequency bands, etc.). During operation, control circuitry  12  may use radio-frequency transceiver circuitry  24  and antenna(s)  40  to transmit and receive data wirelessly. Control circuitry  12  may, for example, receive wireless local area network communications wirelessly using radio-frequency transceiver circuitry  24  and antenna(s)  40  and may transmit wireless local area network communications wirelessly using radio-frequency transceiver circuitry  24  and antenna(s)  40 . 
     Electronic device  10  may be provided with electronic device housing  38 . Housing  38 , which may sometimes be referred to as a case, may be formed of plastic, glass, ceramics, fiber composites, metal (e.g., stainless steel, aluminum, etc.), other suitable materials, or a combination of these materials. Housing  38  may be formed using a unibody configuration in which some or all of housing  38  is machined or molded as a single structure or may be formed using multiple structures (e.g., an internal frame structure covered with one or more outer housing layers). Configurations for housing  38  in which housing  38  includes support structures (a stand, leg(s), handles, etc.) may also be used. 
     A rear perspective view of an illustrative electronic device such as device  10  of  FIG. 1  is shown in  FIG. 2 . As shown in  FIG. 2 , device  10  may include a main body portion such as main body portion  52 . Main body portion  52  may have a front face  56  that forms a display for device  10  (e.g., a pixel array that is covered by a display cover layer). All or substantially all of front face  56  may be covered by the display (e.g., by the display cover layer and/or by the pixel array used to produce images for the display). Front face  56  may therefore sometimes be referred to herein as display  56 . If desired, some of front face  56  may be covered by metal housing walls and/or dielectric housing walls (e.g., housing walls that form part of housing  38  of  FIG. 1 ). 
     Main body portion  52  may have a rear wall  54  that opposes front face  56  (e.g., rear wall  54  may form a part of housing  38  of  FIG. 1 ). Rear wall  54  may be planar, substantially planar, or curved. Front face  56  may be planar, substantially planar, or curved. Rear wall  54  may be formed from conducive material, dielectric, or a combination of conductive and dielectric materials. In one suitable arrangement that is described herein as an example, rear wall  54  is formed from metal without any dielectric portions (e.g., without a dielectric logo or other dielectric windows). Rear wall  54  may therefore sometimes be referred to herein as conductive rear wall  54  or conductive housing wall  54 . However, conductive rear wall  54  may include an opening such as opening  58 . Opening  58  may, for example, accommodate additional structures that allow for device  10  (e.g., main body portion  52 ) to be mounted to a table-top stand or to a wall-mount. Other openings may be formed in main body portion  52  to accommodate buttons, speakers, data ports, accessory ports, and/or other input/output components. 
     As shown in  FIG. 2 , main body portion  52  of device  10  may be mounted to a stand such as stand  42 . Stand  42  may be placed on a surface such as surface  48  (e.g., a tabletop, desktop, the floor, or other surfaces). Stand  42  may have a base portion  44  that rests on surface  48  and may have a neck portion  46  that extends vertically from base portion  44 . Neck portion  46  may include an attachment structure such as hinge barrel  62 . Stand  42  may include a housing such as stand housing  50 . Stand housing  50  may be formed from metal and/or dielectric material. In one suitable arrangement, stand housing  50  is formed from the same metal material used to form conductive rear wall  54  of main body portion  52 . Stand housing  50  may have openings (e.g., in neck portion  46 ) that allow power cords or other cables to pass from main body portion  52  to the rear side of stand  42 . 
     Main body portion  52  may include a conductive structure such as conductive structure  60 . Conductive structure  60  may protrude through opening  58  towards hinge barrel  62  of stand  42 . The end of conductive structure  60  may be inserted into and attached (secured) to hinge barrel  62 . In one suitable arrangement that is described herein as an example, conductive structure  60  may include a conductive support plate within the interior of main body portion  52  and may include a conductive tongue that extends from the conductive support plate and protrudes through opening  58  to hinge barrel  62 . 
     Hinge barrel  62  may include hinges, fasteners, or any other desired structures for receiving and securing conductive structure  60 . Once attached to hinge barrel  62 , conductive structure  60  and thus main body portion  52  may be rotated about hinge axis  66  (e.g., an axis extending longitudinally through hinge barrel  62 , parallel to the X-axis of  FIG. 2 ) while stand  42  remains stationary in place, as shown by arrows  64 . This may allow a user of device  10  to adjust the position and/or orientation of main body portion  52  relative to stand  42  to provide the user with a satisfactory viewing angle for the display on front face  56 , for example. Hinge barrel  62  may allow main body portion  52  to remain at a desired orientation (e.g., after rotation about hinge axis  66 ) until the user re-orients main body portion  52 . Control circuitry  12 , input-output devices  20 , and transceiver circuitry  24  of  FIG. 1  may be located (housed) within main body portion  52  (e.g., between front face  56  and conductive rear wall  54 ). 
     Forming conductive rear wall  54  entirely from metal may provide device  10  with an attractive all-metal appearance while also maximizing the structural integrity of main body portion  52 . However, if care is not taken, forming conductive rear wall  54  entirely from metal may block antennas  40  ( FIG. 1 ) within main body portion  52  from being able to radiate with satisfactory antenna efficiency in all directions around device  10  (e.g., particularly towards the rear side of device  10 ). In order to allow for satisfactory antenna efficiency around all sides of device  10 , one or more antennas  40  may be formed from conductive structure  60 . In general, the antennas  40  in conductive structure  60  may be formed using any desired antenna architectures. In one suitable arrangement that is described herein as an example, antenna  40  may be a slot antenna formed in conductive structure  60 . 
     An illustrative slot antenna formed in conductive structure  60  is shown in  FIG. 3 . As shown in  FIG. 3 , conductive structure  60  may include a conductive support plate such as support plate  70  and a conductive tongue such as conductive tongue  68 . Support plate  70  and conductive tongue  68  may be formed from integral portions of the same piece of conductive material (e.g., machined metal) or may be formed from separate conductors that are joined together (e.g., using welds, solder, conductive adhesive, adhesive tape, screws, brackets, clips, etc.). Support plate  70  may be placed against the interior surface of conductive rear wall  54  in main body portion  52  of device  10  ( FIG. 2 ). Conductive tongue  68  may extend from conductive support plate  70  and may protrude through opening  58  towards stand  42  ( FIG. 2 ). The end  88  of conductive tongue  68  opposite support plate  70  may be attached or otherwise secured within hinge barrel  62  of stand  42  ( FIG. 2 ). 
     As shown in  FIG. 3 , conductive tongue  68  may be provided with a dielectric-filled slot element as slot element  74 . Slot element  74  may extend through an entirety of the thickness of conductive tongue  68  (e.g., parallel to the Z-axis of  FIG. 3 ). Slot element  74  may serve as the antenna resonating element for antenna  40  and may sometimes be referred to herein as slot  74 , slot radiating element  74 , radiating element  74 , resonating element  74 , slot resonating element  74 , or slot antenna resonating element  74 . 
     Antenna  40  may be fed using antenna feed  32  coupled across slot element  74 . In particular, positive antenna feed terminal  34  and ground antenna feed terminal  36  of antenna feed  32  may be coupled to opposing sides of slot element  74  along the length  72  of slot element  74 . Radio-frequency antenna current I may flow between antenna feed terminals  34  and  36  around the perimeter of slot element  74 . Corresponding radio-frequency signals may be radiated by slot element  74 . Similarly, radio-frequency signals received by antenna  40  may produce radio-frequency antenna currents around slot element  74  that are received by antenna feed  32 . Slot element  74  may have a width perpendicular to length  72 . The width may be less than length  72 . 
     Antenna feed  32  may be coupled across slot element  74  at a distance from the left or right edge (side) of slot element  74  that is selected to match the impedance of antenna  40  to the impedance of the corresponding transmission line. For example, antenna current I flowing around slot element  74  may experience an impedance of zero at left edge  78  and right edge  80  of slot element  74  (e.g., a short circuit impedance) and an infinite (open circuit) impedance at the center of slot element  74  (e.g., at a fundamental frequency of the slot). Antenna feed  32  may be located between the center of slot element  74  and one of the left or right edges at a location where the antenna current experiences an impedance that matches the impedance of the corresponding transmission line (e.g., 50 Ohms). 
     The perimeter of slot element  74  may be selected to configure slot element  74  to radiate radio-frequency signals within desired frequency bands. For example, when length  72  is significantly greater than the width of slot element  74  (e.g., when slot element  74  is long and narrow), length  72  may be approximately equal to (e.g., within 15% of) one-half of an effective wavelength of operation of antenna  40 . The effective wavelength of operation may be equal to the free space wavelength of the radio-frequency signals conveyed by antenna  40  multiplied by a constant factor that is determined based on the dielectric constant of the material within slot element  74 . Harmonic modes of slot element  74  may also be configured to cover additional frequency bands (e.g., so that antenna  40  operates as a multi-band antenna). 
     For example, slot element  74  may be characterized by multiple electromagnetic standing wave modes that are associated with different response peaks for antenna  40 . These discrete modes may be determined by the dimensions of slot element  74  (e.g., length  72 ). For example, the dimensions of slot element  74  may define the boundary conditions for electromagnetic standing waves in each of the standing wave modes that are excited on slot element  74  by antenna currents I conveyed over positive antenna feed terminal  34  and ground antenna feed terminal  36  and/or by received radio-frequency signals. Such standing wave modes of slot element  74  include a fundamental mode and one or more harmonics of the fundamental mode (i.e., so-called harmonic modes of slot element  74 ). Slot element  74  may exhibit antenna response peaks at frequencies associated with the fundamental mode and one or more of the harmonic modes of slot element  74  (e.g., where the harmonic modes are typically at multiples of the fundamental modes). 
     Curves  82  and  84  are shown on  FIG. 3  to illustrate some of the standing wave modes of slot element  74 . As shown in  FIG. 3 , curves  82  and  84  plot the voltage across slot element  74  (perpendicular to length  72 ) at different points along length  72 . Similarly, curves  82  and  84  may also represent the magnitude of the electric field within slot element  74  at different points along length  72  (e.g., where the electric field extends in a direction perpendicular to length  72 ). In each mode, nodes in the voltage distribution are present at edges  78  and  80  (e.g., length  72  establishes boundary conditions for the electromagnetic standing waves produced on slot element  74  in the different modes). 
     Curve  82  represents the voltage distribution across slot element  74  in the fundamental mode. As shown in  FIG. 3 , in the fundamental mode associated with curve  82 , the voltage across slot element  74  (e.g., in a direction parallel to edges  78  and  80 ) and the magnitude of the electric field reaches a maximum (e.g., an anti-node) at the center of slot element  74  (e.g., half way across length  72 ). Length  72  may establish the fundamental mode, where length  72  is approximately one-half of the corresponding wavelength of operation for the fundamental mode. The wavelength of operation may, for example, be an effective wavelength of operation based on the dielectric material within slot element  74 . 
     Curve  84  represents the voltage distribution across slot element  74  in a first harmonic mode. As shown in  FIG. 3 , in the first harmonic mode associated with curve  84 , the voltage across slot element  74  and the magnitude of electric field reach maxima (anti-nodes) at one-quarter and three-quarters of length  72  from edge  78 . At the same time, in the first harmonic mode the voltage across slot element  74  and the magnitude of the electric field are at a node (e.g., a minimum or zero-value) at the center of slot element  74 . Antenna  40  may exhibit a response peak associated with the first harmonic mode at a frequency that is approximately twice the frequency associated with the fundamental mode, for example. 
     The modes associated with curves  82  and  84  may support coverage in corresponding frequency bands for antenna  40 . In one suitable arrangement, the fundamental mode associated with curve  82  may configure slot element  74  to cover the first frequency band (e.g., a 2.4 GHz WLAN band such as a band that includes 2.45 GHz). Similarly, the harmonic mode associated with curve  84  may configure slot element  74  to cover the second frequency band (e.g., a 5 GHz WLAN band such as a band that includes 5.5 GHz). 
     Antenna tuning components may be coupled to antenna  40 . As an example, one or more antenna tuning components such as capacitor  76  may bridge slot element  74 . Capacitor  76  may be, for example, a fixed capacitor having a fixed capacitance. Capacitor  76  may be configured to tune the frequency band of the radio-frequency signals conveyed by antenna  40 . Capacitor  76  may be located at distance  86  from the center of slot  74 . Distance  86  may be selected so that capacitor  76  adjusts the frequency response of antenna  40  for both the fundamental mode (e.g., at 2.4 GHz) and the first harmonic mode (e.g., at 5 GHz). Greater distances  86  may decrease the impact of capacitor  76  on the fundamental mode while increasing the impact of capacitor  76  on the first harmonic mode, whereas shorter distances  86  may increase the impact of capacitor  76  on the fundamental mode while decreasing the impact of capacitor  76  on the first harmonic mode (e.g., because the first harmonic mode exhibits a node at the center of slot element  74 ). Slot element  74  may be filled with dielectric material if desired. The example of  FIG. 3  is merely illustrative. In general, any desired number of any desired type of antenna tuning components may be coupled across slot element  74  at any desired locations. The locations of positive antenna feed terminal  34  and ground antenna feed terminal  36  in  FIG. 3  may be swapped if desired. 
     In the example of  FIG. 3 , slot element  74  is a closed slot because conductive tongue  68  completely surrounds and encloses slot element  74 . In another suitable arrangement, antenna  40  may include an open slot element, as illustrated in  FIG. 4 . As shown in  FIG. 4 , in scenarios where antenna  40  includes an open slot element, conductive tongue  68  may include multiple antennas  40  such as a first antenna  40 A located at left edge  92  of conductive tongue  68  and a second antenna  40 B located at right edge  93  of conductive tongue  68 . 
     Antenna  40 A includes an open slot element  94  (as opposed to the closed slot element  74  of  FIG. 3 ). Slot element  94  has a closed edge  96  defined by conductive tongue  68  and an opposing open end defined by left edge  92 . Antenna  40 B may include the same structures and operate in the same way as antenna  40 A (e.g., where open slot element  94  of antenna  40 B has an open end defined by right edge  93  of conductive tongue  68 ), albeit with mirror symmetry about the Y-axis. Slot elements  94  may extend through an entirety of the thickness of conductive tongue  68  (e.g., parallel to the Z-axis of  FIG. 4 ). Slot elements  94  may serve as the antenna resonating elements for antennas  40 A and  40 B and may sometimes be referred to herein as slots  94 , slot radiating elements  94 , radiating elements  94 , resonating elements  94 , slot resonating elements  94 , or slot antenna resonating elements  94 . By forming both antennas  40 A and  40 B in conductive tongue  68 , antennas  40 A and  40 B may collectively provide satisfactory radio-frequency coverage in both the +X and −X directions, despite the antennas including open slot elements  94 . The operation of antenna  40 A is described herein by example. 
     Antenna feed  32  may be coupled across slot element  94 . In particular, positive antenna feed terminal  34  and ground antenna feed terminal  36  of antenna feed  32  may be coupled to opposing sides of slot element  94  along the length  90  of slot element  94 . Radio-frequency antenna current may flow between antenna feed terminals  34  and  36  around the perimeter of slot element  94 . Corresponding radio-frequency signals may be radiated by slot element  94 . Similarly, radio-frequency signals received by antenna  40 A may produce radio-frequency antenna currents around slot element  94  that are received by antenna feed  32 . Slot element  94  may have a width perpendicular to length  90 . The width may be less than length  90 . 
     Antenna feed  32  may be coupled across slot element  94  at a distance from the right edge (side) of slot element  94  that is selected to match the impedance of antenna  40 A to the impedance of the corresponding transmission line. The perimeter of slot element  94  may be selected to configure slot element  94  to radiate radio-frequency signals within desired frequency bands. For example, when length  90  is significantly greater than the width of slot element  94  (e.g., when slot element  94  is long and narrow), length  90  may be approximately equal to (e.g., within 15% of) one-quarter of an effective wavelength of operation of antenna  40 A. The effective wavelength of operation may be equal to the free space wavelength of the radio-frequency signals conveyed by antenna  40 A multiplied by a constant factor that is determined based on the dielectric constant of the material within slot element  94 . Harmonic modes of slot element  94  may also be configured to cover additional frequency bands (e.g., so that antenna  40 A operates as a multi-band antenna). 
     For example, slot element  94  may be characterized by multiple electromagnetic standing wave modes that are associated with different response peaks for antenna  40 . Curves  98  and  100  are shown on  FIG. 4  to illustrate some of the standing wave modes of slot element  94 . As shown in  FIG. 4 , curves  98  and  100  plot the voltage across slot element  94  (perpendicular to length  90 ) at different points along length  90 . Similarly, curves  98  and  100  may also represent the magnitude of the electric field within slot element  94  at different points along length  90  (e.g., where the electric field extends in a direction perpendicular to length  90 ). In each mode, nodes in the voltage distribution are present at edge  96  (e.g., length  90  establishes boundary conditions for the electromagnetic standing waves produced on slot element  94  in the different modes). 
     Curve  98  represents the voltage distribution across slot element  94  in a first electromagnetic mode (e.g., a fundamental λ/4 mode). As shown in  FIG. 4 , in the first electromagnetic mode associated with curve  98 , the voltage across slot element  94  (e.g., in a direction parallel to edge  96 ) and the magnitude of the electric field reaches a maximum (e.g., an anti-node) at the open end of slot element  94 . Length  90  may establish the first electromagnetic mode, where length  90  is approximately one-quarter of the corresponding wavelength of operation for the first electromagnetic mode. The wavelength of operation may, for example, be an effective wavelength of operation based on the dielectric material within slot element  94 . 
     Curve  100  represents the voltage distribution across slot element  94  in a second electromagnetic mode (e.g., a harmonic 3λ/4 mode that is a second order harmonic of the first electromagnetic λ/4 mode). As shown in  FIG. 4 , in the second electromagnetic mode associated with curve  100 , the voltage across slot element  94  and the magnitude of electric field reach maxima (anti-nodes) at edge  92  and between the location of capacitor  76  and edge  96 . At the same time, in the second electromagnetic mode the voltage across slot element  94  and the magnitude of the electric field are at a node (e.g., a minimum or zero-value) between edge  92  and the location of capacitor  76 . The modes associated with curves  98  and  100  may support coverage in corresponding frequency bands for antenna  40 A. In one suitable arrangement, the first electromagnetic mode associated with curve  98  may configure slot element  94  to cover the first frequency band (e.g., a 2.4 GHz WLAN band such as a band that includes 2.45 GHz). Similarly, the second electromagnetic mode associated with curve  100  may configure slot element  94  to cover the second frequency band (e.g., a 5 GHz WLAN band such as a band that includes 5.5 GHz). Capacitor  76  may be located at a distance from edge  92  that is selected so that capacitor  76  adjusts the frequency response of antenna  40 A for both the first electromagnetic mode (e.g., at 2.4 GHz) and the second electromagnetic mode (e.g., at 5 GHz). 
       FIG. 5  is a cross sectional side view of device  10  showing how a slot antenna may be integrated into conductive structure  60  (e.g., as taken in the direction of line AA′ of  FIG. 3  or line BB′ of  FIG. 4 ). As shown in  FIG. 5 , hinge barrel  62  on neck portion  46  of stand  42  may include an opening or cavity such as cavity  104 . End  88  of conductive tongue  68  on conductive structure  60  may be inserted into cavity  104 . Conductive tongue  68  may be secured to hinge barrel  62  (e.g., using hinges or other structures) such that conductive structure  60  and thus main body portion  52  can rotate about hinge axis  66 , as shown by arrows  106 . Hinge axis  66  may run through conductive tongue  68  or elsewhere within hinge barrel  62 . Cavity  104  may include sufficient room above and/or below conductive tongue  68  to allow conductive structure  60  to rotate upwards and/or downwards. 
     Support plate  70  of conductive structure  60  may be located within main body portion  52  of device  10 . Support plate  70  may, for example, be mounted to (e.g., in direct contact with) the interior surface of conductive rear wall  54  of main body portion  52 . If desired, support plate  70  may be secured to conductive rear wall  54  using adhesive, solder, welds, screws, biasing structures, springs, pins, brackets, and/or any other desired fastening structures. Support plate  70  may, if desired, be conductively coupled (e.g., shorted) to conductive rear wall  54  (e.g., using solder, welds, conductive screws, conductive adhesive, etc.). Support plate may help to provide structural support to conductive rear wall  54  so conductive rear wall  54  is not excessively stressed (strained) due to the weight of main body portion  52  when mounted to stand  42 . As an example, conductive rear wall  54  may be formed from a relatively lightweight material such as anodized aluminum, whereas support plate  70  may be formed from a stronger material such as stainless steel. 
     Conductive tongue  68  of conductive structure  60  may extend from support plate  70  towards hinge barrel  62 . Conductive tongue  68  may protrude through opening  58  in conductive rear wall  54 . Conductive tongue  68  may include slot element  102 . Slot element  102  may extend all the way through the thickness of conductive tongue  68  if desired (e.g., from upper surface  136  to lower surface  138  of conductive tongue  68 ). Conductive tongue  68  may be formed from the same material as support plate  70  (e.g., stainless steel) or may be formed from other metals or conductive materials. 
     Slot element  102  may form the antenna radiating element for antenna  40  in conductive structure  60 . Slot element  102  may be a closed slot element (e.g., slot element  74  of  FIG. 3 ) or an open slot element (e.g., slot element  94  of  FIG. 4 ). In scenarios where slot element  102  is an open slot element, conductive structure  60  may include two slot elements  102  for forming antennas  40 A and  40 B of  FIG. 4 . If desired, dielectric material such as dielectric  140  may be inserted into slot  102 . Dielectric  140  may include plastic, glass, foam, or other dielectrics. Optional cosmetic cover layers such as dielectric cover layers  142  may be layered over upper surface  136  and/or under lower surface  138 . Dielectric cover layers  142  may, for example, help hide slot element  102  from view and protect antenna  40  from contaminants or damage. 
     Antenna  40  of  FIG. 5  may be fed using feed structures such as printed circuit  118  (sometimes referred to herein as feed printed circuit  118 ). Feed printed circuit  118  may, for example, be a flexible printed circuit or a rigid printed circuit board. Feed printed circuit  118  may include one or more dielectric layers  120  that are patterned with conductive traces. As shown in  FIG. 5 , ground traces such as ground traces  126  and  122  may be patterned on dielectric layers  120 . The ground traces patterned on different layers/surfaces of feed printed circuit  118  may be shorted together using one or more conductive vias  128 . Ground traces  126  may be conductively coupled (e.g., shorted) to support plate  70  and thus conductive rear wall  54  (e.g., using conductive screws, solder, welds, conductive adhesive, etc.). Screws, brackets, clips, adhesive, or other fastening structures may also be used to help mechanically secure feed printed circuit  118  to conductive rear wall  54 . Ground traces  122  may be coupled to the ground conductor for a coaxial cable or other transmission line for antenna  40 . Ground traces  122 , conductive vias  128 , ground traces  126 , support plate  70 , and conductive rear wall  54  may thereby be held at a ground potential (e.g., to form ground antenna feed terminal  36  of  FIGS. 1, 3, and 4  for antenna  40 ). 
     Signal traces such as signal traces  124  may also be patterned onto one or more dielectric layers  120  of feed printed circuit  118 . Signal traces  124  may be coupled to the signal conductor for a coaxial cable or other transmission line for antenna  40 . Dielectric layers  120  may include opening  130 . Conductive structure  60  may also include an opening such as opening (cavity)  132 . A conductive interconnect structure such as conductive screw  108  may be used to form the positive antenna feed terminal for antenna  40 . Conductive screw  108  need not be a screw and may, if desired, include other conductive interconnect structures (e.g., conductive pins, conductive springs, conductive wire, conductive traces, and/or other conductive interconnect structures). 
     Conductive screw  108  may include a head portion  110  and a shaft portion  117 . Head portion  110  may be electrically coupled to signal traces  124  (e.g., using solder, welds, conductive adhesive, etc.). Shaft portion  117  may extend from head portion  110 , through opening  130  in feed printed circuit  118 , through opening  58  in conductive rear wall  54 , and through opening  132  in conductive structure  60  to hinge barrel  62 . Tip  112  of shaft portion  117  may be electrically coupled and attached (e.g., fastened or secured) to the portion of conductive tongue  68  located to the left of slot element  102  (e.g., the portion of conductive tongue  68  located within hinge barrel  62 ). As an example, the portion of conductive tongue  68  within hinge barrel  62  may include a conductive screw boss or threaded recess. Tip  112  of screw  108  may be screwed into the conductive screw boss or threaded recess to secure screw  108  to the portion of conductive tongue  68  within hinge barrel  62 . 
     Signal traces  124 , screw  108 , and the portion of conductive tongue  68  to the left of slot element  102  may be at a signal potential (e.g., to form positive antenna feed terminal  34  of  FIGS. 1, 3, and 4  for antenna  40 ). In other words, signal traces  124  and screw  108  may form part of the signal conductor for the transmission line path for antenna  40  (e.g., signal conductor  28  of transmission line path  26  of  FIG. 1 ). Shaft portion  117  of conductive screw  108  may have a diameter (width)  116 . Diameter  116  may be less than the diameter of opening  132  to prevent shaft portion  117  from shorting to the portion of conductive tongue to the right of slot element  102 , which is held at a ground potential. Tip  112  of shaft portion  117  may have a diameter (width)  114  that is different than (e.g., greater than) diameter  116 . The difference between diameters  114  and  116  may be selected to match the impedance of antenna  40  to the impedance of the transmission line path for antenna  40  (e.g., to provide a 50 Ohm impedance match). This may configure antenna currents to flow around the perimeter of slot element  102  (e.g., within the X-Y plane of  FIG. 5 ), producing corresponding radio-frequency signals  134  that are radiated with satisfactory antenna efficiency. Because slot element  102  extends through the thickness of conductive structure  60 , radio-frequency signals  134  may be transmitted and received in both the +Z and −Z directions. 
       FIG. 6  is a front view of feed printed circuit  118  (e.g., as taken in the direction of arrow  125  of  FIG. 5 ). As shown in  FIG. 6 , ground traces  122 , signal traces  124 , and conductive traces  127  may be patterned on a given dielectric layer  120  of feed printed circuit  118 . A transmission line such as coaxial cable  148  may be used to feed the antenna. Coaxial cable  148  may have a ground conductor  150  (e.g., an outer braid conductor) coupled to ground traces  122  by solder  146 . Coaxial cable  148  may have a signal conductor  152  (e.g., an inner signal conductor) coupled to signal traces  124 . Conductive screw  108  may extend through dielectric layers  120  and may be electrically coupled to signal traces  124 . An additional screw such as conductive screw  144  may extend through dielectric layers  120  and may be electrically coupled to conductive traces  127 . Conductive screw  144  may have a tip coupled to conductive tongue  68  within hinge barrel  62  ( FIG. 5 ) at a different point along the length of the slot element  102  than conductive screw  108 . Capacitor  76  may be coupled between conductive traces  127  and ground traces  122 . Capacitor  76  may be, for example, a surface mount technology (SMT) capacitor mounted to dielectric layers  120 . In this way, capacitor  76  may be electrically coupled across the slot element (e.g., slot element  102  of  FIG. 5 ) for tuning multiple electromagnetic modes of the slot element (e.g., for covering multiple frequency bands) while also being located on feed printed circuit  118 . 
     If desired, conductive tongue  68  may be covered by a conductive sleeve and slot element  102  may be directly fed by a flexible printed circuit that bridges the slot element.  FIG. 7  is an exploded perspective view showing how conductive tongue  68  may be covered by a conductive sleeve and how slot element  102  may be directly fed by a flexible printed circuit that bridges the slot element. In the example of  FIG. 7 , support plate  70  and main body portion  52  ( FIG. 5 ) are not shown for the sake of clarity. 
     As shown in  FIG. 7 , conductive tongue  68  may include slot element  102 . Slot element  102  is shown as a closed slot element (e.g., slot element  74  of  FIG. 3 ) in the example of  FIG. 7 . This is merely illustrative and, if desired, conductive tongue  68  may include two antennas with open slot elements (e.g., antennas  40 A and  40 B having slot elements  94  of  FIG. 4 ). Conductive tongue  68  may include a notch or recess such as notch  160  (e.g., at the upper or lower surface of conductive tongue  68 ). 
     Antenna  40  may be fed by a flexible printed circuit such as flexible printed circuit  164 . Flexible printed circuit  164  may include ground traces  170  (e.g., forming part of ground conductor  30  of  FIG. 1 ) and signal traces  168  (e.g., forming part of signal conductor  28  of  FIG. 1 ). Flexible printed circuit  164  may be inserted into notch  160 , as shown by arrow  172 . Ground traces  170  may be shorted to conductive tongue  68  at the +Y side of slot element  102  (e.g., forming ground antenna feed terminal  36  of  FIG. 1 ). A portion of flexible printed circuit  164  may extend across and bridge slot element  102 . Signal traces  168  on flexible printed circuit  164  may be coupled to point  178  on the −Y side of slot element  102  (e.g., forming positive antenna feed terminal  34  of  FIG. 1 ). While support plate  70  of conductive structures  60  is not shown in  FIG. 7  for the sake of clarity, support plate  70  may be omitted or may otherwise include an opening to accommodate flexible printed circuit  164 . 
     A dielectric cover layer such as dielectric liner  166  may be placed on top of signal traces  168  and flexible printed circuit  164 , as shown by arrow  174 . A conductive sleeve such as conductive sleeve  154  may be provided with a cavity such as cavity  158 . Conductive sleeve  154  may be placed over conductive tongue  68 , as shown by arrow  176  (e.g., the assembled conductive tongue  68 , flexible printed circuit  164 , and dielectric liner  166  may be inserted into cavity  158  of a conductive sleeve  154 ). Conductive sleeve  154  may be formed from metal such as aluminum, stainless steel, metal alloys, or other materials. When conductive tongue  68  is mounted within cavity  158 , conductive sleeve  154  may hide flexible printed circuit  164  and slot element  102  from view and may protect flexible printed circuit  164  and slot element  102  from contaminants and damage. 
     Dielectric liner  166  may prevent signal traces  168  on flexible printed circuit  164  from shorting to conductive sleeve  154 . Conductive sleeve  154  may have a dielectric antenna window such as dielectric window  156  on one or both sides of conductive sleeve  154 . Dielectric window  156  may allow slot element  102  to radiate to the exterior of conductive sleeve  154  despite the presence of conductive sleeve  154 . If desired, there may be a gap that separates conductive tongue  68  from conductive sleeve  154 , dielectric liner  166  may cover additional portions of conductive tongue  68 , and/or other dielectric spacers may be used to separate conductive tongue  68  from conductive sleeve  154 . Flexible printed circuit  164  may be coupled to feed printed circuit  118  of  FIG. 5  or may be coupled to a coaxial cable or other transmission line for antenna  40  (e.g., feed printed circuit  118  of  FIG. 5  may be omitted). 
     In the examples of  FIGS. 2-7 , main body portion  52  of device  10  is mounted to stand  42 . This is merely illustrative. In another suitable arrangement, main body portion  52  may be mounted to a wall-mount or stand (e.g., a flat display mounting interface (FDMI) wall-mount or stand) using a mounting bracket.  FIG. 8  is a rear view of device  10  having a mounting bracket. 
     As shown in  FIG. 8 , device  10  may include a mounting bracket such as mounting bracket  180 . Mounting bracket  180  may be coupled to conductive rear wall  54  by one or more support legs  182 . Mounting bracket  180  may be formed from conductive material such as metal if desired. Mounting bracket  180  may be received by a bracket mounting structure on a stand or wall-mount. As an example, mounting bracket  180  may be received by and secured to an FDMI-compliant bracket mounting structure on a stand or wall-mount. The FDMI-compliant bracket mounting structure may be a Video Electronics Standards Association (VESA) Mounting Interface Standard (MIS) bracket mounting structure (e.g., a VESA mount), for example. 
     Mounting bracket  180  may be separated from conductive rear wall  54  by a cavity (e.g., support legs  182  may separate mounting bracket  180  from conductive rear wall  54  by a non-zero distance). Conductive structure  60  may be located within the cavity between mounting bracket  180  and conductive rear wall  54 . The antenna(s) in conductive structure  60  may transmit radio-frequency signals  185  out of the cavity between mounting bracket  180  and conductive rear wall  54  (e.g., omnidirectionally within the X-Z plane). 
       FIG. 9  is a side view of device  10  having mounting bracket  180  (e.g., as taken in the direction of arrow  184  of  FIG. 8 ). As shown in  FIG. 9 , mounting bracket  180  may be affixed to conductive rear wall  54  by support legs  182 . Mounting bracket  180  may be separated from conductive rear wall  54  by cavity  186 . Conductive structure  60  (e.g., conductive tongue  68 ) may extend from rear conductive wall  54  into cavity  186  (e.g., with end  88  facing mounting bracket  180 ). Conductive tongue  68  may be covered by a conductive sleeve such as conductive sleeve  154  of  FIG. 7  if desired. Slot element  102  for antenna  40  may radiate radio-frequency signals  185  out of cavity  186 . If desired, mounting bracket  180  and support legs  182  may be removable. In this scenario, main body portion  52  may then be mounted to a different stand such as stand  42  of  FIGS. 2 and 5  (e.g., stand  42  of  FIGS. 2 and 5  may be removable from conductive structure  60  if desired). 
     The foregoing is merely illustrative and various modifications can be made to the described embodiments. The foregoing embodiments may be implemented individually or in any combination.

Metadata:
Filing Date: 20200225
Publication Date: 20210831
Grant Date: 20210831
Priority Date: 20200225
Inventors: WANG, PAUL X.
HAMEL, BRADLEY J.
GUTERMAN, Jerzy S.
Barrera, Joel D.
RUNDLE, NICHOLAS A.
CHIOTELLIS, NIKOLAOS
LEE, SIMON S.
Assignee: APPLE INC
CPC Classifications: [{"code": "F16M2200/08", "inventive": false, "first": false, "tree": "[]"}, {"code": "F16M11/22", "inventive": true, "first": false, "tree": "[]"}, {"code": "F16M11/10", "inventive": true, "first": false, "tree": "[]"}, {"code": "H05K2201/10409", "inventive": false, "first": false, "tree": "[]"}, {"code": "H05K3/0061", "inventive": false, "first": false, "tree": "[]"}, {"code": "H05K1/0215", "inventive": true, "first": false, "tree": "[]"}, {"code": "H05K1/0237", "inventive": false, "first": false, "tree": "[]"}, {"code": "H01Q13/10", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q1/2266", "inventive": true, "first": true, "tree": "[]"}, {"code": "H01Q1/2266", "inventive": true, "first": true, "tree": "[]"}, {"code": "H05K1/0243", "inventive": true, "first": false, "tree": "[]"}, {"code": "F16M11/10", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q13/10", "inventive": true, "first": false, "tree": "[]"}, {"code": "H05K1/189", "inventive": true, "first": false, "tree": "[]"}, {"code": "F16M11/10", "inventive": true, "first": false, "tree": "[]"}, {"code": "H05K1/0243", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q1/2266", "inventive": true, "first": true, "tree": "[]"}, {"code": "H05K1/189", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q13/10", "inventive": true, "first": false, "tree": "[]"}]
Family ID: 77366366