PATENT DOCUMENT

Publication Number: US-9966653-B2
Application Number: US-201514839619-A
Country: US
Kind Code: B2

Title: Antennas for electronic device with heat spreader

Abstract:
An electronic device may have wireless circuitry with antennas. The electronic device may have a dielectric housing. A printed circuit board with electrical components may be mounted in the dielectric housing. Heat spreader structures may be used to dissipate heat from the electrical components. The heat spreader structures be configured to form antenna cavities. The antennas in the electronic device may be formed from the antenna cavities and may have antenna resonating elements formed on the printed circuit. An electrical component such as a light-emitting diode may be mounted in one of the antenna cavities. Each antenna element may be an inverted-F antenna resonating element with short and long arms. The short arm of each antenna resonating element may be formed from edge plated metal traces on an edge of the printed circuit.

Claims:
What is claimed is: 
     
       1. An electronic device, comprising:
 a printed circuit board having a surface and a peripheral edge; 
 electrical components on the surface of the printed circuit board; 
 a heat spreader that dissipates heat from the electrical components; and 
 an antenna having an antenna resonating element formed from a metal trace on the peripheral edge of the printed circuit board and an antenna cavity formed at least partly from the heat spreader. 
 
     
     
       2. The electronic device defined in  claim 1  further comprising an electrical component in the antenna cavity. 
     
     
       3. The electronic device defined in  claim 2  wherein the electrical component comprises a light-emitting diode. 
     
     
       4. The electronic device defined in  claim 1  further comprising an antenna element that includes the antenna resonating element formed from the metal trace. 
     
     
       5. The electronic device defined in  claim 4  wherein the metal trace comprises an edge-plated metal trace on the peripheral edge. 
     
     
       6. The electronic device defined in  claim 5  wherein the antenna resonating element comprises an inverted-F antenna resonating element having first and second arms. 
     
     
       7. The electronic device defined in  claim 6  wherein the first arm is longer than the second arm and the edge-plated metal trace forms the second arm. 
     
     
       8. The electronic device defined in  claim 1  further comprising:
 a light-emitting diode in the antenna cavity; and 
 an isolation circuit coupled to the light-emitting diode. 
 
     
     
       9. The electronic device defined in  claim 1  further comprising a plastic housing that covers the heat spreader and the printed circuit board. 
     
     
       10. The electronic device defined in  claim 1  wherein the peripheral edge of the printed circuit board is substantially perpendicular to the surface of the printed circuit board. 
     
     
       11. An electronic device, comprising:
 a housing; 
 a printed circuit board in the housing; 
 electrical components on the printed circuit board; 
 metal structures that dissipate heat from the electrical components; and an antenna formed from an antenna element and an antenna cavity, wherein the antenna element comprises an antenna resonating element formed from an edge plated metal trace on an edge of the printed circuit board and portions of the metal structures define the antenna cavity. 
 
     
     
       12. The electronic device defined in  claim 11  wherein the antenna has an antenna feed, the electronic device further comprising a transmission line on the printed circuit board that is coupled to the antenna feed. 
     
     
       13. The electronic device defined in  claim 12  further comprising an electrical component mounted on the printed circuit board in the antenna cavity. 
     
     
       14. The electronic device defined in  claim 11  wherein the antenna element has a first arm that resonates at 2.4 GHz and a second arm that resonates at 5 GHz and the second arm includes the edge plated metal trace on the edge of the printed circuit board. 
     
     
       15. The electronic device defined in  claim 11  wherein the metal structures are mounted on the surface of the printed circuit board. 
     
     
       16. An electronic device comprising:
 a printed circuit board having circuitry, wherein the printed circuit board has first and second edges that define a corner of the printed circuit board; 
 a metal heat spreader that dissipates heat from the circuitry; 
 a dielectric housing having sidewalls and a top wall surrounding the metal heat spreader and the printed circuit board, wherein a portion of a corner of the metal heat spreader is removed to form at least part of an antenna cavity; and 
 an antenna formed from the antenna cavity and from an antenna resonating element arm on the corner of the printed circuit board. 
 
     
     
       17. The electronic device defined in  claim 16  further comprising a light-emitting diode in the antenna cavity. 
     
     
       18. The electronic device defined in  claim 16  further comprising an additional antenna, wherein an additional portion of the metal heat spreader in another corner or the metal heat spreader is removed to form at least part of an additional antenna cavity, and wherein the additional antenna includes the additional antenna cavity and an additional antenna element on the printed circuit board. 
     
     
       19. The electronic device defined in  claim 16  wherein the electronic device has a length, a width, and a height, the metal heat spreader extends substantially across the width of the electronic device, and the printed circuit extends substantially across the width of the electronic device.

Description:
BACKGROUND 
     This relates generally to electronic devices and, more particularly, to electronic devices with wireless communications circuitry. 
     Electronic devices often include wireless circuitry with antennas. For example, cellular telephones, computers, and other devices often contain antennas for supporting wireless communications. 
     It can be challenging to form electronic device antenna structures with desired attributes. In some wireless devices, the presence of electrical components and conductive structures in the device can influence antenna performance. Antenna performance may not be satisfactory if conductive structures and electrical components in a device are not configured properly and interfere with antenna operation. Device size can also affect performance. It can be difficult to achieve desired performance levels in a compact device, particularly when the compact device has conductive housing structures. 
     It would therefore be desirable to be able to provide improved wireless circuitry for electronic devices. 
     SUMMARY 
     An electronic device may have wireless circuitry with antennas. The electronic device may have a dielectric housing. A printed circuit board with electrical components may be mounted in the dielectric housing. Heat spreader structures that are used to dissipate heat from the electrical components may also be mounted in the housing. 
     The heat spreader structures may include a metal heat spreader from which corner portions have been removed to form antenna cavities. The antennas in the electronic device may each be formed from an antenna resonating element and one of the antenna cavities. Antennas may be located at the corners of the electronic device housing. The antennas may handle wireless local area network signals or other wireless signals. 
     An electrical component such as a light-emitting diode may be mounted in one of the antenna cavities. Each antenna may have an inverted-F antenna resonating element with short and long arms to support dual band operation. The short arm of each antenna resonating element may be formed from edge plated metal traces on an edge of the printed circuit. The long arm may lie between a rear wall of the antenna cavity and the short arm. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of an illustrative electronic device in accordance with an embodiment. 
         FIG. 2  is a schematic diagram of illustrative circuitry in an electronic device in accordance with an embodiment. 
         FIG. 3  is a diagram of an illustrative antenna for an electronic device in accordance with an embodiment. 
         FIG. 4  is a cross-sectional side view of an illustrative printed circuit board and associated heat spreaders in accordance with an embodiment. 
         FIG. 5  is a cross-sectional side view of an illustrative electronic device in accordance with an embodiment of the present invention. 
         FIG. 6  is a perspective view of an illustrative interior portion of an electronic device with a cavity antenna in accordance with an embodiment. 
         FIG. 7  is a cross-sectional side view of a portion of a printed circuit having an antenna resonating element formed from an edge plated metal trace in accordance with an embodiment. 
         FIG. 8  is a top view of a corner portion of a printed circuit with an antenna resonating element in accordance with an embodiment. 
         FIG. 9  is an illustrative isolation circuit of the type that may be used to prevent antenna signals from interfering with the operation of an electrical component such as a light-emitting diode in accordance with an embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     Electronic devices such as electronic device  10  of  FIG. 1  may be provided with wireless communications circuitry. The wireless communications circuitry may be used to support wireless communications in one or more wireless communications bands. 
     Electronic device  10  may be a portable electronic device or other suitable electronic device. For example, electronic device  10  may be a laptop computer, a tablet computer, a somewhat smaller device such as a wrist-watch device, pendant device, headphone device, earpiece device, or other wearable or miniature device, a handheld device such as a cellular telephone, a media player, or other small portable device. Device  10  may also be a set-top box, a desktop computer, a display into which a computer or other processing circuitry has been integrated, a display without an integrated computer, or other suitable electronic equipment. As an example, device  10  may be a set-top box or computer that has a rectangular or square housing and that is coupled to a computer monitor, television, or other display. 
     Device  10  may include a housing such as housing  12 . Housing  12 , 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. Parts of housing  12  (e.g., an outer housing shell) may be formed from walls of dielectric or other low-conductivity material. Housing  12  or other structures in device  10  (e.g., heat sink structures, internal housing structures, etc.) may also be formed from metal. The footprint of device  10  (i.e., the shape of housing  12  when viewed from above) may be rectangular, square, or other suitable shape. The shape of housing  12  may be cubic, rectangular box-shaped, or may have other suitable shapes. 
     To handle wireless communications, device  10  may contain one or more antennas. The antennas can include loop antennas, inverted-F antennas, strip antennas, planar inverted-F antennas, slot antennas, hybrid antennas that include antenna structures of more than one type, or other suitable antennas. 
     In general, device  10  may include any suitable number of antennas (e.g., one or more, two or more, three or more, four or more, etc.). The antennas in device  10  may be located at the corners of housing  12  (see, e.g., corners  14  and  16 ), may be located along one or more edges of a device housing, may be formed in the center of housing  12 , or may be located in other suitable locations. 
     A schematic diagram showing illustrative components that may be used in device  10  of  FIG. 1  is shown in  FIG. 2 . As shown in  FIG. 2 , device  10  may include control circuitry such as storage and processing circuitry  28 . Storage and processing circuitry  28  may include storage such as 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. Processing circuitry in storage and processing circuitry  28  may be used to control the operation of device  10 . This processing circuitry may be based on one or more microprocessors, microcontrollers, digital signal processors, application specific integrated circuits, etc. 
     Storage and processing circuitry  28  may be used to run software on device  10 , such as 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, storage and processing circuitry  28  may be used in implementing communications protocols. Communications protocols that may be implemented using storage and processing circuitry  28  include internet protocols, wireless local area network protocols (e.g., IEEE 802.11 protocols—sometimes referred to as WiFi®), protocols for other short-range wireless communications links such as the Bluetooth® protocol, cellular telephone protocols, multiple-input and multiple-output (MIMO) protocols, antenna diversity protocols, etc. 
     Input-output circuitry  30  may include input-output devices  32 . Input-output devices  32  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  32  may include user interface devices, data port devices, and other input-output components. For example, input-output devices  32  may include touch screens, displays without touch sensor capabilities, buttons, joysticks, scrolling wheels, touch pads, key pads, keyboards, microphones, cameras, buttons, speakers, status indicators, light sources, audio jacks and other audio port components, digital data port devices, light sensors, position and orientation sensors (e.g., sensors such as accelerometers, gyroscopes, and compasses), capacitance sensors, proximity sensors (e.g., capacitive proximity sensors, light-based proximity sensors, etc.), fingerprint sensors, etc. 
     Input-output circuitry  30  may include wireless communications circuitry  34  for communicating wirelessly with external equipment. Wireless communications circuitry  34  may include radio-frequency (RF) transceiver circuitry formed from one or more integrated circuits, power amplifier circuitry, low-noise input amplifiers, passive RF components, one or more antennas, transmission lines, and other circuitry for handling RF wireless signals. Wireless signals can also be sent using light (e.g., using infrared communications). 
     Wireless communications circuitry  34  may include radio-frequency transceiver circuitry  90  for handling various radio-frequency communications bands. For example, circuitry  34  may include transceiver circuitry  36 ,  38 , and  42 . Transceiver circuitry  36  may be wireless local area network circuitry that handles 2.4 GHz and 5 GHz bands for WiFi® (IEEE 802.11) communications and that handles the 2.4 GHz Bluetooth® communications band. If desired, wireless communications circuitry  34  may also include additional transceiver such as cellular telephone transceiver circuitry or other remote wireless circuitry  38  and satellite navigation system circuitry such as Global Positioning System (GPS) circuitry  42 . Wireless communications circuitry  34  can also include 60 GHz transceiver circuitry or other extremely high frequency communications circuitry, circuitry for receiving television and radio signals, paging system transceivers, near field communications (NFC) circuitry, etc. In WiFi® and Bluetooth® links and other short-range wireless links, wireless signals are typically used to convey data over tens or hundreds of feet. In cellular telephone links and other long-range links, wireless signals are typically used to convey data over thousands of feet or miles. 
     Wireless communications circuitry  34  may include antennas  40 . Antennas  40  may be formed using any suitable antenna types. For example, antennas  40  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, hybrids of these designs, etc. Different types of antennas may be used for different bands and combinations of bands. Antennas  40  may be single band antennas, dual band antennas, or antennas that resonate in more than three communications bands. As an example, antennas  40  may handle wireless local area network communications in a single communications band such as a communications band at 2.4 GHz or may handle communications in multiple bands (e.g., a 2.4 GHz band and a 5 GHz band). 
     An illustrative antenna for device  10  that is coupled to a transceiver circuit is shown in  FIG. 3 . Antenna  40  of  FIG. 3  is an inverted-F antenna having inverted-F antenna resonating element  106  and antenna ground  104 . As shown in  FIG. 3 , transceiver circuitry  90  may be coupled to antenna structures  40  using paths such as transmission line path  92 . Transceiver circuitry  90  may be coupled to control circuitry  28 . Control circuitry  28  may use transceiver circuitry  90  to transmit and receive wireless data through antenna  40 . 
     Transmission line path  92  of  FIG. 3  may have a positive signal conductor such as line  94  and a ground signal conductor such as line  96 . Lines  94  and  96  may form parts of a coaxial cable, a stripline transmission line, or a microstrip transmission line (as examples). A matching network formed from components such as inductors, resistors, and capacitors may be used in matching the impedance of antenna  40  to the impedance of transmission line  92 . Matching network components may be provided as discrete components (e.g., surface mount technology components) or may be formed from housing structures, printed circuit board structures, traces on plastic supports, etc. Components such as these may also be used in forming filter circuitry and tunable components in antenna  40  and may include tunable and/or fixed devices. 
     Transmission line  92  may be coupled to antenna feed structures associated with antenna  40  such as feed  112 . Inverted-F antenna  40  of  FIG. 3  has antenna resonating element  106  and antenna ground  104 . Antenna resonating element  106  may have a main resonating element arm such as arm  108  and a secondary arm (e.g., a shorter arm) such as arm  108 ′. The lengths of arms  108  and  108 ′ may be selected so that antenna  40  resonates at desired operating frequencies. For example, the lengths of arms  108  and  108 ′ may be a quarter of a wavelength at desired operating frequencies for antenna  40 . Antenna  40  may also exhibit resonances at harmonic frequencies. 
     Main resonating element arm  108  may be coupled to ground  104  by return path  110 . An inductor or other component may be interposed in path  110  and/or tunable components may be interposed in path  110  and/or coupled in parallel with path  110  between arm  108  and ground  104 . 
     Antenna feed  112  may include positive antenna feed terminal  98  and ground antenna feed terminal  100  and may run in parallel to return path  110  between resonating element  106  and ground  104 . If desired, inverted-F antennas such as illustrative antenna  40  of  FIG. 4  may have more than one resonating arm (e.g., multiple arms such as arm  108  and  108 ′) to create multiple frequency resonances to support operations in multiple communications bands) or may have other antenna structures (e.g., parasitic antenna resonating elements, tunable components to support antenna tuning, etc.). Multiple feeds may be used to feed antennas such as antenna  40 . 
     In the example of  FIG. 3 , antenna  40  is an inverted-F antenna having main arm  108  for supporting communications at a first communications band such as a 2.4 GHz communications band and secondary arm  108 ′ for supporting communications at a second communications band such as a 5.0 GHz communications band (i.e., antenna  40  may be a wireless local area network antenna such as a dual band WiFi® antenna). Other configurations may be used for antenna  40 , if desired. The configuration of  FIG. 3  is merely illustrative. 
     Antenna  40  may be formed from metal traces on a printed circuit board and other conductive structures in device  10 . With one suitable arrangement, which may sometimes be described herein as an example, resonating element  106  may be formed from patterned metal traces on a printed circuit board, whereas ground  104  may be formed from a metal antenna cavity structure that is shorted to ground traces on the printed circuit board. The metal cavity structure may, as an example, be formed from a cavity in a metal device structure such as a metal heat spreader (e.g., a heat sink). 
     A cross-sectional side view of an illustrative printed circuit and associated heat spreader (thermal spreader) structures of the type that may be used in device  10  is shown in  FIG. 4 . As shown in  FIG. 4 , electrical components  156  for device  10  may be mounted on one or both sides of printed circuit  154 . Printed circuit  154  may contain patterned metal traces to which contacts on electrical components  156  are coupled using solder or other conductive material. Components  156  may include integrated circuits, sensors, and other circuitry for device  10  (see, e.g., storage and processing circuitry  28  and input-output circuitry  30  of  FIG. 2 ). Heat spreaders  152  and  150  (sometimes referred to as heat sinks, heat sink structures, or thermal spreaders) may be used to dissipate heat that is generated by components  156  during operation. Heat spreaders  152  and  150  may be formed from copper, aluminum, zinc, iron, other metals, or other materials that conduct heat effectively. Heat spreaders  152  and  150  may have shapes that help device  10  release heat through housing  12  into the air surrounding device. Mounting structures such as support structures  158  and thermal compound or other material  160  (e.g., gasket material, adhesive, solder, etc.) may be used in mounting heat spreaders  150  and  152  to printed circuit  154 . In the illustrative configuration of  FIG. 4 , a first heat spreader (heat spreader  152 ) is mounted above components  156  on the upper surface of printed circuit  154  and a second heat spreader (heat spreader  150 ) is mounted below components  156  on the opposing lower surface of printed circuit  154 . 
       FIG. 5  is a cross-sectional side view of device  10  of  FIG. 1  taken along line  18  and viewed in direction  20 . As shown in  FIG. 5 , device  10  may include printed circuit  154  and heat spreaders  152  and  150  in housing  12 . Housing  12  may be formed from a dielectric structure such as a plastic shell or other suitable structure that forms the exterior surfaces of device  10  (e.g., the top wall and side walls of device  10 ). Heat spreader  150  or a structure on which heat spreader  150  is mounted may form the lower surface of the housing for device  10 . Upper heat spreader  152  may have vertically extending portions  152 ′ that help dissipate heat through housing  12 . Circuitry  162  may include components  164  (e.g., power supply capacitors, etc.) and other circuitry  166 . Circuitry  162  may include, for example, a power supply that converts alternating current (AC) power from an AC wall outlet into direct current (DC) power for use by the circuitry of device  10 . 
     Antennas for device  10  may be formed in the corners of housing  12 , as described in connection with illustrative corners  14  and  16  of  FIG. 1 . A perspective view of a corner of device  10  (with outer housing  12  removed) is shown in  FIG. 6 . As shown in  FIG. 6 , antenna  40  may be formed from metal traces on printed circuit board  154  such as metal traces on edge  154 E of printed circuit board  154  that form antenna resonating element arm  108 ′. An opening may be formed in the corner of heat spreader  152  to form cavity  170 . The opening in heat spreader  152  may overlap portion of heat spreader  150 , which may form a lower surface for cavity  170 . The metal of device  10  such as the portions of heat spreader  152  (and heat spreader  150 ) that form the interior surfaces of cavity  170  may form antenna ground  104  ( FIG. 4 ) for antenna  40 . Cavity  170  may therefore form a cavity for antenna  40  (i.e., antenna  40  may be a cavity-backed inverted-F antenna). Cavity  170  may be shorted to ground traces on printed circuit  154  (e.g., ground traces that follow the inner wall of cavity  170 ). A gasket, conductive adhesive, solder, or other coupling mechanisms may be used to short the metal of heat spreader  152  associated with cavity  170  to the ground traces on printed circuit  154 . 
     If desired, one or more electrical components such as electrical component  172  may be mounted within cavity  170 . Component  172  may be an integrated circuit, sensor, or other circuitry for device  10  (see, e.g., circuitry  28  and  30  of  FIG. 2 ). With one illustrative configuration, component  172  may be a light-emitting diode that control circuitry  28  turns on and off to convey status information to a user of device  10 . Other electrical components may be mounted in antenna cavity  170  if desired. The incorporation of a light-emitting diode in cavity  170  is merely illustrative. 
     Metal traces for antenna resonating element  106  may be formed on peripheral edge  154 E of printed circuit  154  in order to maximize the separation between these metal traces and antenna ground  104  and thereby enhance antenna bandwidth. If desired, edge plating (electroless or electrolytic plating) techniques may be used to form metal traces for antenna  40  on the side of printed circuit  154 . As shown in  FIG. 7 , metal layers such as metal layers  108 M of printed circuit  154  may be coated with a plated metal layer along edge  154 E using edge plating techniques, thereby forming an edge-plated metal structure such as antenna resonating element structure  108 ′. Because metal trace  108 ′ of  FIG. 7  is formed on edge  154 E, trace  108 ′ extends vertically, perpendicular to the plane of printed circuit  154 . Other edge plated structures may be used in forming antenna  40 , if desired. 
       FIG. 8  is a top view of a corner portion of printed circuit  154  (i.e., a view of the metal trace patterns on printed circuit  154  with the antenna cavity of heat spreader  152  removed). As shown in  FIG. 8 , ground traces  170 M on printed circuit  154  may be aligned with the shape of the walls of cavity  170  (e.g., so that traces  170 M are shorted along the walls of cavity  170  when heat spreader  152  is mounted above printed circuit  154  as shown in  FIG. 6 ). Antenna signals may be routed to and from antenna  40  of  FIG. 8  through a gap in ground traces  170 M using transmission line  92 . Transmission line  92  may include a central positive metal trace (line  94 ) flanked by a pair of ground metal traces (lines  96 ). At feed  112 , trace  94  may be coupled to positive antenna feed terminal  98  and traces  96  may be coupled to ground antenna feed terminals  100 . 
     Antenna resonating element  106  may have a longer arm such as arm  108  that lies within the middle of the area shadowed by cavity  170  and a shorter arm such as arm  108 ′ that is formed from edge plated metal on edge  154 E of printed circuit  154 . Arm  108  may allow antenna  40  to resonate in a first communications band (e.g., at a frequency of 2.4 GHz) and arm  108 ′ may allow antenna  40  to resonate in a second communications band (e.g., at a frequency of 5 GHz). Return path  110  may couple antenna resonating element  106  to ground. The higher frequency signals associated with arm  108 ′ may be more directional in nature than the lower frequency signals associated with arm  108 , so antenna performance may be enhanced by placing arm  108 ′ at a location that is farther from the rear cavity wall of cavity  170  and ground traces  170 M than arm  108 . 
     Cavity  170  and associated ground traces  170 M may have a shape that accommodates electrical component  172  (e.g., a light-emitting diode). To electrically isolate component  172  and antenna  40 , device  10  may be provided with an isolation circuit of the type shown in  FIG. 9 . As shown in  FIG. 9 , light-emitting diode  172  may emit light  180  during operation. Control circuitry  28  ( FIG. 1 ) may apply signals across terminals  182  and  184  to control the operation of diode  172  (i.e., to adjust the amount of light  180  that is emitted). Isolation circuitry such as isolation circuit  190  may be interposed between terminals  182  and  184  and diode  174  to isolate diode  174  from antenna  40 . Isolation circuitry  190  may include shunt capacitors  186  and series inductors  188  or other isolation circuitry that blocks signals at radio frequencies. 
     The foregoing is merely illustrative and various modifications can be made by those skilled in the art without departing from the scope and spirit of the described embodiments. The foregoing embodiments may be implemented individually or in any combination.

Metadata:
Filing Date: 20150828
Publication Date: 20180508
Grant Date: 20180508
Priority Date: 20150828
Inventors: MCAULIFFE, ERIN A.
JERVIS, JAMES W.
Ruaro, Andrea
PASCOLINI, MATTIA
GUTERMAN, Jerzy S.
Assignee: APPLE INC
CPC Classifications: [{"code": "H01Q5/371", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q1/06", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q1/243", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q1/38", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q9/04", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q1/24", "inventive": true, "first": true, "tree": "[]"}, {"code": "H01Q9/42", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q9/42", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q9/04", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q5/371", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q1/38", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q1/243", "inventive": true, "first": true, "tree": "[]"}, {"code": "H01Q1/243", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q1/24", "inventive": true, "first": true, "tree": "[]"}, {"code": "H01Q9/42", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q5/371", "inventive": true, "first": false, "tree": "[]"}, {"code": "H01Q1/06", "inventive": true, "first": false, "tree": "[]"}]
Family ID: 56843229