Patent Publication Number: US-9432070-B2

Title: Antenna placement

Description:
RELATED APPLICATIONS 
     This application is a continuation of and claims priority under 35 U.S.C. §120 to U.S. patent application Ser. No. 13/656,520, filed Oct. 19, 2012, and titled “Antenna Placement”, which claims priority under 35 U.S.C. §119(e) to U.S. Provisional Patent Application No. 61/714,713, filed Oct. 16, 2012, and titled “Antenna Placement”, the entire disclosures of which are incorporated by reference in their entirety. 
    
    
     BACKGROUND 
     Mobile computing devices have been developed to increase the functionality that is made available to users in a mobile setting. For example, a user may interact with a mobile phone, tablet computer, or other mobile computing device to check email, surf the web, compose texts, interact with applications, and so on. Some mobile computing devices may incorporate multiple antennas to support various wireless subsystems and communications. The multiple antennas may include for example one or more Wi-Fi, Bluetooth, global navigation satellite system (GNSS), near field communication (NFC) and/or cellular antennas. 
     Arranging antennas within a small form factor device, such as a tablet presents a significant challenge. This problem may be compounded as the number of antennas increases. To avoid interference between different antennas, traditional devices may separate antennas by utilizing multiple edges of the device for antenna placements. In order to provide acceptable antenna performance, though, the materials and other features (metal components/cases, connectors, buttons, speakers, etc.) that may be placed along the multiple edges may be limited in this approach, which is a substantial restriction on product design. Moreover, common hand positions used with tablets and other mobile devices may adversely affect antenna performance for antennas placed at or near these hand positions. Thus, traditional placements may be inadequate for some devices and antenna combinations. 
     SUMMARY 
     Antenna placement techniques are described. In one or more embodiments, a computing device includes an antenna suite having multiple different kinds of antennas. An antenna zone for the antenna suite may be established along a particular edge of the computing device. Non-interfering materials (e.g., RF transparent material) may be used within the antenna zone and other materials (e.g., metal) may be employed for other regions of the device. The multiple different kinds of antennas in the antenna suite may then be disposed within the established antenna zone. The antennas may be placed to minimize interference between antennas and/or achieve performance objective for the suite of antennas. In one approach, a suite of five antennas may be placed along a top edge of a computing device in a landscape orientation. 
     This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The detailed description is described with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The use of the same reference numbers in different instances in the description and the figures may indicate similar or identical items. Entities represented in the figures may be indicative of one or more entities and thus reference may be made interchangeably to single or plural forms of the entities in the discussion. 
         FIG. 1  is an illustration of an environment in an example implementation that is operable to employ the techniques described herein. 
         FIG. 2  depicts an example implementation of a computing device of  FIG. 1  in greater detail. 
         FIG. 3  depicts an example implementation of an antenna suite. 
         FIG. 4  depicts another example implementation of an antenna suite. 
         FIG. 5  depicts another example implementation of an antenna suite. 
         FIG. 6  depicts an implementation showing placements for one or more antenna zones of a computing device. 
         FIG. 7  depicts an example implementation of an antenna suite that uses multiple antenna zones. 
         FIG. 8  depicts an example implementation of an antenna suite in connection with an accessory device. 
         FIG. 9  depicts an example implementation in which multiple antennas zones are provided by a computing device and an accessory device to implement an antenna suite. 
         FIG. 10  depicts an example orientation of the accessory device in relation to the computing device. 
         FIG. 11  depicts an example orientation of the accessory device in relation to the computing device. 
         FIG. 12  depicts illustrates some example rotational orientations of the computing device in relation to the accessory device. 
         FIG. 13  is a flow diagram that describes an example procedure in which antenna placement occurs for a computing device. 
         FIG. 14  illustrates an example system including various components of an example device that can be implemented as any type of computing device as described with reference to  FIGS. 1-13  to implement techniques described herein. 
     
    
    
     DETAILED DESCRIPTION 
     Overview 
     To avoid interference between different antennas, traditional devices may separate antennas by utilizing multiple edges of the device for antenna placements, which may tie-up these edges with RF keep outs and create substantial restrictions on product design. Accordingly, traditional placements may be inadequate for some devices and antenna combinations. 
     Antenna placement techniques are described. In one or more embodiments, a computing device includes an antenna suite having multiple different kinds of antennas. An antenna zone for the antenna suite may be established along a particular edge of the computing device. Non-interfering materials (e.g., RF transparent material) may be used within the antenna zone and other materials (e.g., metal) may be employed for other regions of the device. The multiple different kinds of antennas in the antenna suite may then be disposed within the established antenna zone. The antennas may be placed to minimize interference between antennas and/or achieve performance objectives for the suite of antennas. In one approach, a suite of five antennas may be placed along a top edge of a computing device in a landscape orientation. 
     In the following discussion, an example environment and devices are first described that may employ the techniques described herein. Example implementations and procedures are then described which may occur in the example environment and by the devices as well as in other environments and by other devices. Consequently, the example implementations and procedures are not limited to the example environment/devices and the example environment/devices are not limited to performance of the example implementations and procedures. 
     Example Operating Environment 
       FIG. 1  is an illustration of an environment  100  in an example implementation that is operable to employ the techniques described herein. The illustrated environment  100  includes an example of a computing device  102  that is physically and communicatively coupled to an accessory device  104  via a flexible hinge  106 . The computing device  102  may be configured in a variety of ways. For example, the computing device  102  may be configured for mobile use, such as a mobile phone, a tablet computer as illustrated, and so on. Thus, the computing device  102  may range from full resource devices with substantial memory and processor resources to a low-resource device with limited memory and/or processing resources. The computing device  102  may also relate to software that causes the computing device  102  to perform one or more operations. 
     The computing device  102 , for instance, is illustrated as including an input/output module  108 . The input/output module  108  is representative of functionality relating to processing of inputs and rendering outputs of the computing device  102 . A variety of different inputs may be processed by the input/output module  108 , such as inputs relating to functions that correspond to keys of the input device, keys of a virtual keyboard displayed by the display device  110  to identify gestures and cause operations to be performed that correspond to the gestures that may be recognized through the accessory device  104  and/or touchscreen functionality of the display device  110 , and so forth. Thus, the input/output module  108  may support a variety of different input techniques by recognizing and leveraging a division between types of inputs including key presses, gestures, and so on. 
     In the illustrated example, the accessory device  104  is a device configured as a keyboard having a QWERTY arrangement of keys although other arrangements of keys are also contemplated. Further, other non-conventional configurations for an accessory device  104  are also contemplated, such as a game controller, configuration to mimic a musical instrument, a power adapter, an accessory to provide wireless functionality, and so forth. Thus, the accessory device  104  may assume a variety of different configurations to support a variety of different functionality. Different accessory devices may be connected to the computing device at different times. 
     As previously described, the accessory device  104  is physically and communicatively coupled to the computing device  102  in this example through use of a flexible hinge  106 . The flexible hinge  106  represents one illustrative example of an interface that is suitable to connect and/or attach and accessory device to a host computing device  102 . The flexible hinge  106  is flexible in that rotational movement supported by the hinge is achieved through flexing (e.g., bending) of the material forming the hinge as opposed to mechanical rotation as supported by a pin, although that embodiment is also contemplated. Further, this flexible rotation may be configured to support movement in one direction (e.g., vertically in the figure) yet restrict movement in other directions, such as lateral movement of the accessory device  104  in relation to the computing device  102 . This may be used to support consistent alignment of the accessory device  104  in relation to the computing device  102 , such as to align sensors used to change power states, application states, and so on. 
     The flexible hinge  106 , for instance, may be formed using one or more layers of fabric and include conductors formed as flexible traces to communicatively couple the accessory device  104  to the computing device  102  and vice versa. This communication, for instance, may be used to communicate a result of a key press to the computing device  102 , receive power from the computing device, perform authentication, provide supplemental power to the computing device  102 , and so on. The flexible hinge  106  or other interface may be configured in a variety of ways to support multiple different accessory devices  104 , further discussion of which may be found in relation to the following figure. 
     As further illustrated in  FIG. 1  the computing device  102  may include various applications  112  that provide different functionality to the device. A variety of applications  112  typically associated with computing devices are contemplated including, but not limited to, an operating system, a productivity suite that integrates multiple office productivity modules, a web browser, games, a multi-media player, a word processor, a spreadsheet program, a photo manager, and so forth. 
     The computing device  102  further includes an antenna suite  114  that is representative of various antennas employed by the computing device to implement wireless functionality, subsystems, and communications. In accordance with techniques described herein, the antenna suite  114  may include multiple different kinds of antennas (e.g., radios) that are arranged together within one or more antennas zones established for the computing device. In general, the antenna suite  114  may be placed to minimize interference between antennas and/or achieve performance objectives for the suite of antennas as a whole. The placement of the antenna suite  114  may also minimize areas of the computing device  102  and/or accessory device  104  which have restrictions that limit the materials and componentry that may be placed with or near to the antenna suite  114 . Areas with such restrictions may be referred to as radio frequency (RF) keep outs. A variety of different types of antennas, combinations of different types of antennas, and arrangements of antennas are contemplated as discussed in greater detail in relation to the following figures. 
     To further illustrate, consider  FIG. 2  which depicts generally at  200  an example computing device  102  of  FIG. 1  in greater detail. In the depicted example, the computing device  102  is shown in a stand-alone configuration without an accessory device  104  being attached. In addition to the components discussed in relation to  FIG. 1 , the example computing device of  FIG. 2  further includes a processing system  202  and computer-readable media  204  that are representative of various different types and combinations of processing components, media, memory, and storage components and/or devices that may be associated with a computing device and employed to provide a wide range of device functionality. In at least some embodiments, the processing system  202  and computer-readable media  204  represent processing power and memory/storage that may be employed for general purpose computing operations. More generally, the computing device  102  may be configured as any suitable computing system and/or device that employ various processing systems and computer-readable media, additional details and examples of which are discussed in relation to the example computing system of  FIG. 14 . 
     The computing device  102  may also implement selected device functionality through one or more microcontrollers  206 . The microcontrollers  206  represent hardware devices/systems that are designed to perform a predefined set of designated tasks. The microcontrollers  206  may represent respective on-chip systems/circuits having self-contained resources such as processing components, I/O devices/peripherals, various types of memory (ROM, RAM, Flash, EEPROM), programmable logic, and so forth. Different microcontrollers may be configured to provide different embedded applications/functionality that are implemented at least partially in hardware and perform corresponding tasks. The microcontrollers  206  enable performance of some tasks outside of operation of a general purpose processing system and other applications/components of the computing device or accessory device. Generally, power consumption of the microcontrollers is low in comparison with operating a general purpose processing system for a device. 
     As further depicted, the computing device  102  may further include an antenna suite  114  as previously discussed. A variety of different types of antennas suitable for the antenna suite  114  are contemplated as represented in  FIG. 2 . By way of example, the antenna suite  114  may include one or more Wi-Fi  208  antennas, global navigation satellite system (GNSS)  210  antennas, cellular  212  antennas, Near Field Communication (NFC)  214  antennas, Bluetooth  216  antennas, and/or other  218  antennas. In accordance with techniques described herein, the antenna suite  114  includes multiple antennas that may be interdependent upon one another and/or are arranged/designed in combination. In some scenarios, some wireless technologies may be implemented using two or more individual radios/antennas. 
     For instance, the Wi-Fi  208  antennas may employ a two-by-two multiple input/multiple output configuration (e.g., 2×2 MIMO). The Wi-Fi  208  antennas may include at least a main and a MIMO antenna in some configurations. In addition, a Bluetooth  216  antenna may optionally be combined with the Wi-Fi  208  antennas. Further, modern cellular technologies such as Long Term Evolution (LTE), WiMax, and/or 4G may employ two or more cellular  212  antennas, such as a main cellular antenna and a MIMO cellular antenna to cover various frequencies, geographic areas, and so forth. 3G and other cellular antennas are also contemplated. The GNSS  210  antennas may be configured for use with various types of navigation standards, technologies, and systems including but not limited to GPS, GLONASS, Galileo, and/or BeiDou navigation systems, to name some examples. 
     Having discussed an example environment and devices, consider now some example details regarding antenna placement techniques in accordance with various implementations. 
     Antenna Placement Details 
     The following discussion presents some details regarding antenna placements and some illustrative examples. As detailed, an antenna suite having multiple different kinds of antennas may be arranged in one or more an antenna zones of the computing device. A variety of design considerations may be accounted for to determine where to place the antenna zones and antennas. Generally, antennas are placed to limit interference between antennas. Thus, antennas that may interfere with one another are isolated to the extent possible. For example, a pair of cellular antennas may be spaced apart to minimize interference. Likewise, a pair of Wi-Fi antennas (e.g., dual 2×2 MIMO antennas) may also be placed in a manner that keeps interference as low as possible given the various other design considerations that are also taken into account. 
     Further particular performance objectives associated with one or more antennas may be factors used to establish antenna zones and place antennas. Individual and collective performance objectives may be considered in determining where to place the antenna zone(s) and individual antennas. For example, performance priorities may be assigned to different types of antennas and placement may depend at least in part upon these priorities. Thus, for example, if priority is given to LTE/cellular performance then associated cellular  212  antennas may be placed first. On the other hand, if priority is given to Wi-Fi performance then associated Wi-Fi  208  antennas may be placed first. Additionally, performance objectives may dictate particular locations or placements for at least some antennas. By way of example, a GNSS  210  antenna generally is arranged to point skyward so as to obtain information from satellites and provide acceptable performance. Thus, suitable skyward facing real estate of the device may be considered and/or reserved for placement of a GNSS  210  antenna. 
     Another consideration is RF keep outs that are associated with antenna zones. The RF keep outs generally have non-interfering and/or RF transparent materials (e.g., polymers/plastics). This means that interfering material such as metal may be “kept out” of these areas. Even using interfering material in other areas may affect performance of the antenna suite  114  and therefore placement of interfering material is a factor that may be taken into account for antenna placement. In addition, the antenna placement consumes real estate of the device that may otherwise be used for connectors, interfaces, buttons, speakers, and/or other components. Thus, the amount of area and locations that are taken up by the antennas and that are available for other components may be another factor used to select antenna placements. Hand positions commonly used by users of the device may also be taken into account. In practice, trade-offs between the example considerations enumerated above as well as other considerations may be made to select a suitable arrangement that enables placement of a plurality of antennas and/or provides acceptable performance given the various different design considerations. 
     Given the foregoing context, consider now some illustrative example antenna placements in various implementations. For example,  FIG. 3  depicts generally at  300  one example implementation of an antenna suite. In particular, the computing device  102  is depicted as including an antenna zone  302  that includes the antenna suite  114 . Various combinations of antennas may be incorporated within the antenna suite  114 . As depicted, the antenna zone  302  may be arranged along a selected edge of the computing device  102 . In the illustrated example, the antenna zone  302  extends substantially across a top edge of the device in a landscape orientation. Other edges may also be selected some examples of which are discussed in relation to the following figures. In at least some implementations, the antenna suite  114  and each individual antenna of the suite are included within a single antenna zone  302 . Moreover, the antenna zone  302  may be located along a single edge of the computing device  102 . 
     The antenna suite  114  may be configured to provide multiple different types of antennas and corresponding communication and/or wireless functionality. For example, the antenna suite  114  may provide cellular functionality and at least one other type of antenna and functionality. Alternatively, an antenna suite  114  may be configured to provide Wi-Fi functionality and at least one other type of antenna and functionality. Comparable combinations including at least two or more different types of antennas are also contemplated. For instance, combinations may include different antennas to provide different types of wireless functionality including various combinations of Wi-Fi, cellular, NFC, Bluetooth, GNSS, and/or other types of antennas as described above and below. 
     In addition or alternatively, an antenna suite  114  may be configured to provide multiple (e.g., two or more) antennas of the same type alone or in combination with other types of antennas. For instance, an antenna suite  114  of two, three, or more cellular antennas may be implemented for some device designs. Likewise, an arrangement of two, three, or more Wi-Fi antennas may be employed. One example of such an arrangement is a dual two-by-two multiple input/multiple output (e.g., dual 2×2 MIMO) arrangement in which two Wi-Fi  208  antennas may be arranged within the example antenna zone  302  generally along the top edge of the device. In one particular placement, the two Wi-Fi  208  antennas may be spaced apart generally at opposite corners of the antenna zone away from the middle of antenna zone  302 . These and other arrangements of multiple, same-type antennas may be implemented with or without including other types of antennas in the same antenna suite  114 . Moreover, an antenna suite  114  may extend across one or multiple antenna zones as further discussed in relation to the following figures. 
       FIG. 4  depicts generally at  400  another example implementation of an antenna suite. In this example, the computing device is depicted as being disconnected from the accessory device  104 . An antenna zone  302  is again depicted as being arranged generally across a top edge of the device in a landscape orientation. In this example, the antenna suite  114  is configured to include two cellular antennas, cellular A  402  and cellular B  404 , and one or more other  406  antennas. The two cellular antennas may be LTE antennas designed to provide wide bandwidth coverage. Here, priority may be given to cellular performance and accordingly the two cellular antennas may be placed first. In particular, the cellular A  402  and cellular B  404  antennas are illustrated as being placed generally at the top corners of the computing device on opposite sides within the antenna zone  302 . This placement spaces the two cellular antennas to isolate the antennas, minimize interference/coupling, and/or achieve bandwidth objectives. The one or more other  406  antennas may then be disposed between the two cellular antennas within the antenna zone  302  based upon one or more of the design considerations previously discussed. 
       FIG. 5  depicts generally at  500  another example implementation of an antenna suite. In particular, the example of  FIG. 5  has an antenna suite  114  that includes five different antennas. The arrangement of  FIG. 5  shows but one example implementation for the one or more other  406  antennas described in relation to  FIG. 4 . In particular, the cellular A  402  and cellular B  404  antennas are again illustrated as being placed (e.g., located) generally at the opposite corners along the top edge of the computing device  102 . A GNSS  502  antenna is placed between the cellular A  402  and cellular B  404  antennas generally upon the top edge and at a central position sustainably at the center of the antenna zone or suite of antennas. This provides a skyward looking position for the GNSS  502  antenna. A pair of Wi-Fi antennas, Wi-Fi A  504  and Wi-Fi B  506 , are then placed at the top edge in the spaces on either side of the GNSS  502  antenna between the GNSS  502  antenna and the two cellular antennas. In this arrangement the Wi-Fi A  504  and Wi-Fi B  506  are still spaced apart to the extent possible given that the two cellular antennas are placed at the top corners. Naturally, the example antennas may be arranged differently. For example, the positions of the cellular and Wi-Fi antennas may be swapped by placing the Wi-Fi antennas at opposite corners and the cellular antennas between the Wi-Fi antennas in the antenna zone  302 . A variety of other arrangements of multiple antennas in an antenna zone are also contemplated. 
     Notably, the suite of five antennas in this arrangement is placed along a single designated edge having the established antenna zone  302 . This leaves the remaining edges available for other purposes and generally free of RF keep outs. Additionally, the designer is free to use metal and/or other material away from the top edge and antenna zone  302 . Moreover, common hand positions along the short edges of the device are away from the antenna zone  302  and will have little or no impairment upon the antennas in the antenna suite  114 . 
       FIG. 6  depicts generally at  600  some different places in which antenna zones may be located. Naturally, an antenna zone  302  may be located generally along the top edge of a computing device  102  (e.g., a slate or tablet) as previously described. However, a variety of locations for antenna zones that may be used individually or in combinations are also contemplated as represented in  FIG. 6 . For example, antenna zones  602  may be located along one or more of the short edges of the computing device  102 . Antenna zones  604 ,  606  may also be placed upon one or more edges of an accessory device  104  in some implementations. Generally, the area  608  providing the flexible hinge  106  or other interface between the computing device  102  and accessory device  104  may be reserved for the interface and other components. Therefore, placement of antenna zones in the area  608  may be avoided. 
     Antennas provided within antennas zones  604 ,  602  of an accessory device  104  may be designed as an alternative or a supplement to wireless functionality of the computing device  102 . By way of example, an accessory device may be configured to provide supplemental cellular and/or GNSS functionality to a computing device that already provides Wi-Fi and other wireless functionality. As another example, the accessory may be configured to provide NFC functionality to a device that does not have NFC functionality. Alternatively, an antenna suite  114  of an accessory device may be implemented as an accessory to provide wireless functionally to a device that does not already have such wireless functionality. In some implementations, multiple different antenna zones of a device and/or an accessory may be employed in combinations. Any of the example antenna zones  302 ,  602 ,  604 ,  606  described herein may be employed individually or in combinations of multiple zones to implement various arrangements of antenna suites  114  described above and below. 
     By way of example,  FIG. 7  depicts generally at  700  an example implementation of an antenna suite that uses multiple antenna zones. In this example, an antenna zone  302  is arranged to include three antennas of an antenna suite  114  having five antennas. The two remaining antennas are placed in antennas zones  602  along the short sides of the computing device  102 . The antennas zones  602  may be offset from the top edge, but generally positioned towards the top corners of the short sides. In this way, significant real estate is preserved along the short sides below the antennas zones  602  for hand positioning and placement of other components. In particular, the antenna zone  302  includes cellular A  402  and cellular B  404  antennas spaced apart with a GNSS  502  antenna placed in the middle between the cellular antennas. A pair of Wi-Fi antennas, Wi-Fi A  504  and Wi-Fi B  506 , are placed in the antennas zones  602  along the short sides. Naturally, the example antennas may be arranged differently. For example, the positions of the cellular and Wi-Fi antennas may be swapped by placing the cellular antennas in the antennas zones  602  and the Wi-Fi antennas in the antenna zone  302 . A variety of other arrangements using multiple antenna zones are also contemplated. 
       FIG. 8  depicts generally at  800  an example implementation of an antenna suite in connection with an accessory device. In particular, a representative antenna zone  604  is provided by an accessory device  104  that may be employed to implement various arrangements of antenna suites  114  described above and below, including but not limited to the example arrangements discussed in relation to  FIGS. 4, 5, and 7 . In general,  FIG. 8  represents that an antenna suite  114  and corresponding wireless functionality may be provided by way of an accessory device in some implementations. The antenna suite  114  provide by an accessory device may be used in lieu of or in combination with an antenna suite  114  of the computing device itself. 
       FIG. 9  depicts generally at  900  an example implementation in which multiple antennas zones are provided by a computing device and an accessory device to implement an antenna suite. Here, an antenna zone  302  of a computing device  102  and antenna zone  604  of an accessory device  104  may provide one or more antenna suites  114 . As mentioned, different antennas may be provided in the different zones such that the accessory device adds functionality that does not exist for the computing device  102 . In this approach, the accessory device may be a wireless add-on accessory that provides added functionality for wireless, cellular, GNSS and/or other technologies such as NFC and/or Bluetooth. In another example, the antenna zone  604  of an accessory device  104  may duplicate functionality provided by a computing device  102 . 
     For example, the antenna zone  302  and antenna zone  604  may be configured to have a pair of identical antenna suites  114 . Having duplicate antenna suites  114  may enable selective switching between the suites to enhance wireless performance as the computing device  102  and accessory device  104  are manipulated into different orientations relative to one another. For example, the antenna suite  114  in antenna zone  302  may be activated in a first orientation while the antenna suite  114  in antenna zone  604  is deactivated. Then, upon manipulation to a second orientation the antenna suite  114  in antenna zone  604  may become activated and the antenna suite  114  in antenna zone  302  may be deactivated. Comparable techniques may be used to selective switch between operation of different antenna zones that may be configured to have different types of antennas and/or different arrangements of antennas. This type of switching between multiple antenna suites/zones may occur for instance if the accessory device covers and/or in some way blocks or interferes with operation of the antenna zone  302  in the second orientation. Various different orientations are contemplated, examples of which are described in relation to  FIGS. 10-12 . 
       FIG. 10  illustrates an example orientation  1000  of the computing device  102 . In the orientation  1000 , the accessory device  104  is laid flat against a surface and the computing device  102  is disposed at an angle  1002  to permit viewing of the display device  110 , e.g., such as through use of a kickstand  1004  disposed on a rear surface of the computing device  102 . The orientation  1000  can correspond to a typing arrangement whereby input can be received via the accessory device  104 , such as using keys of a keyboard, a track pad, and so forth. Here, an antenna zone  302  is shown at the top edge of the computing device  102 . Optionally, another antenna zone may be provided by the accessory device  104 , such as an antenna zone  604  located at the bottom edge of the accessory device  104 . In different orientations, the different zones may become more or less effective for various kinds of wireless communication. For example, different zones may become blocked and unblocked as the device is manipulated into different orientations. Thus, in some instance multiple zones may be employed in combination and/or as alternatives as described previously. 
       FIG. 11  illustrates a further example orientation of the computing device  102 , generally at  1100 . In the orientation  1100 , the computing device  102  is oriented at an angle  1102  such that the display device  110  faces away from the accessory device  104 . In this example, the kickstand  1004  can support the computing device  102 , such as via contact with a back surface of the accessory device  104 . Although not expressly illustrated here, a cover can be employed to cover and protect a front surface of the accessory device  104 . 
       FIG. 12  illustrates that the computing device  102  may be rotated within a variety of different angle ranges with respect to the accessory device  104 . Different angle ranges can be associated with different power states, different application states, use of different wireless antennas/antennas zones, and so on. 
     An angle range  1200  is illustrated, which corresponds to a closed position for the computing device  102 . Thus, if the computing device  102  is positioned at an angle within the angle range  1200  relative to the accessory device  104 , the computing device  102  can be determined to be in a closed position. A closed position can include an associated closed state where various functionalities/behaviors for the computing device  102  and accessory device  104  including antenna operations can be modified accordingly based on the closed state. This may include switching between different antenna zones, selectively turning antennas on/off, selecting various wireless functionality provided by one or more antenna suites  114 , and so forth. 
     Further illustrated is an angle range  1202 , which may correspond to a typing orientation for the computing device  102 . Thus, if the computing device  102  is positioned at an angle within the angle range  1002  relative to the accessory device  104 , the computing device  102  can be determined to be in a typing orientation. Within this orientation, the computing device  102  and/or the accessory device  104  can be placed in a typing power state where functionalities/behaviors for the computing device  102  and accessory device  104  including antenna operations can be customized accordingly based on the typing state. 
       FIG. 12  further illustrates an angle range  1204 , which corresponds to a viewing position for the computing device  102 . Thus, if the computing device  102  is positioned at an angle within the angle range  1204  relative to the accessory device  104 , the computing device  102  can be determined to be in a viewing orientation. In this orientation, functionalities/behaviors for the computing device  102  and accessory device  104  including antenna operations can be controlled accordingly based on the viewing state. 
     Having discussed some example antenna placement details, consider an example procedure in accordance with one or more implementations. 
     Example Procedures 
     The following discussion describes antenna placement techniques that may be implemented utilizing the previously described systems and devices. Aspects of each of the procedures may be implemented in hardware, firmware, software, or a combination thereof. The procedures are shown as a set of blocks that specify operations performed by one or more devices and are not necessarily limited to the orders shown for performing the operations by the respective blocks. 
       FIG. 13  depicts an example procedure  1300  in which antenna placement occurs for a computing device. An antenna zone for a computing device is established that is associated with a single edge of the computing device (block  1302 ). Multiple antennas for the computing device are placed within the antenna zone to provide multiple different types of wireless functionality (block  1304 ). For example, one or more antenna zones may be established using various design considerations as discussed previously. In one particular example, an antenna zone  302  may be established along a top edge for a computing device in a landscape orientation. Here, the computing device may be a tablet or slate device configured primarily for use in a landscape orientation. Zones in other places as well as combinations of two or more zones are also contemplated. 
     Various arrangements of an antenna suite  114  may be placed within the established antenna zone(s) examples of which are described above and below. Antennas within the antenna zone may enable a variety of wireless functionality including but not limited to one or more of Wi-Fi, Cellular, NFC, Bluetooth, and/or GNSS functionality. In an implementation functionality may be provided for at least cellular communications, Wi-Fi communications, and global navigation. In addition or alternatively, functionality may be provided for different combinations of cellular communications, Wi-Fi communications, and global navigation. These combinations may include for example, a combination of cellular communications and at least one other type of wireless functionality, a combination of Wi-Fi communications and at least one other type of wireless functionality, and/or a combination of global navigation and at least one other type of wireless functionality. Other wireless functionality such as NFC and/or Bluetooth may be included in addition to or as alternatives to the enumerated examples. 
     Having considered the foregoing example procedures, consider now a discussion of example systems and devices that may be employed to implement aspects of techniques in one or more embodiments. 
     Example System and Device 
       FIG. 14  illustrates an example system generally at  1400  that includes an example computing device  1402  that is representative of one or more computing systems and/or devices that may implement the various techniques described herein. The computing device  1402  may, for example, be configured to assume a mobile configuration through use of a housing formed and size to be grasped and carried by one or more hands of a user, illustrated examples of which include a mobile phone, mobile game and music device, and tablet computer although other examples are also contemplated. 
     The example computing device  1402  as illustrated includes a processing system  1404 , one or more computer-readable media  1406 , and one or more I/O interface  1408  that are communicatively coupled, one to another. Although not shown, the computing device  1402  may further include a system bus or other data and command transfer system that couples the various components, one to another. A system bus can include any one or combination of different bus structures, such as a memory bus or memory controller, a peripheral bus, a universal serial bus, and/or a processor or local bus that utilizes any of a variety of bus architectures. A variety of other examples are also contemplated, such as control and data lines. 
     The processing system  1404  is representative of functionality to perform one or more operations using hardware. Accordingly, the processing system  1404  is illustrated as including hardware element  1410  that may be configured as processors, functional blocks, and so forth. This may include implementation in hardware as an application specific integrated circuit or other logic device formed using one or more semiconductors. The hardware elements  1410  are not limited by the materials from which they are formed or the processing mechanisms employed therein. For example, processors may be comprised of semiconductor(s) and/or transistors (e.g., electronic integrated circuits (ICs)). In such a context, processor-executable instructions may be electronically-executable instructions. 
     The computer-readable media  1406  is illustrated as including memory/storage  1412 . The memory/storage  1412  represents memory/storage capacity associated with one or more computer-readable media. The memory/storage component  1412  may include volatile media (such as random access memory (RAM)) and/or nonvolatile media (such as read only memory (ROM), Flash memory, optical disks, magnetic disks, and so forth). The memory/storage component  1412  may include fixed media (e.g., RAM, ROM, a fixed hard drive, and so on) as well as removable media (e.g., Flash memory, a removable hard drive, an optical disc, and so forth). The computer-readable media  1406  may be configured in a variety of other ways as further described below. 
     Input/output interface(s)  1408  are representative of functionality to allow a user to enter commands and information to computing device  1402 , and also allow information to be presented to the user and/or other components or devices using various input/output devices. Examples of input devices include a keyboard, a cursor control device (e.g., a mouse), a microphone, a scanner, touch functionality (e.g., capacitive or other sensors that are configured to detect physical touch), a camera (e.g., which may employ visible or non-visible wavelengths such as infrared frequencies to recognize movement as gestures that do not involve touch), and so forth. Examples of output devices include a display device (e.g., a monitor or projector), speakers, a printer, a network card, tactile-response device, and so forth. Thus, the computing device  1402  may be configured in a variety of ways to support user interaction. 
     The computing device  1402  is further illustrated as being communicatively and physically coupled to an accessory device  1414  that is physically and communicatively removable from the computing device  1402 . In this way, a variety of different accessory devices may be coupled to the computing device  1402  having a wide variety of configurations to support a wide variety of functionality. In this example, the accessory device  1414  includes one or more controls  1416 , which may be configured as press-sensitive keys, mechanically switched keys, buttons, and so forth. 
     The accessory device  1414  is further illustrated as including one or more modules  1418  that may be configured to support a variety of functionality. The one or more modules  1418 , for instance, may be configured to process analog and/or digital signals received from the controls  1416  to determine whether an input was intended, determine whether an input is indicative of resting pressure, support authentication of the accessory device  1414  for operation with the computing device  1402 , and so on. 
     Various techniques may be described herein in the general context of software, hardware elements, or program modules. Generally, such modules include routines, programs, objects, elements, components, data structures, and so forth that perform particular tasks or implement particular abstract data types. The terms “module,” “functionality,” and “component” as used herein generally represent software, firmware, hardware, or a combination thereof. The features of the techniques described herein are platform-independent, meaning that the techniques may be implemented on a variety of commercial computing platforms having a variety of processors. 
     An implementation of the described modules and techniques may be stored on or transmitted across some form of computer-readable media. The computer-readable media may include a variety of media that may be accessed by the computing device  1402 . By way of example, and not limitation, computer-readable media may include “computer-readable storage media” and “computer-readable signal media.” 
     “Computer-readable storage media” may refer to media and/or devices that enable storage of information in contrast to mere signal transmission, carrier waves, or signals per se. Thus, computer-readable storage media does not include signal bearing media or signals per se. The computer-readable storage media includes hardware such as volatile and non-volatile, removable and non-removable media and/or storage devices implemented in a method or technology suitable for storage of information such as computer readable instructions, data structures, program modules, logic elements/circuits, or other data. Examples of computer-readable storage media may include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical storage, hard disks, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or other storage device, tangible media, or article of manufacture suitable to store the desired information and which may be accessed by a computer. 
     “Computer-readable signal media” may refer to a signal-bearing medium that is configured to transmit instructions to the hardware of the computing device  1402 , such as via a network. Signal media typically may embody computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as carrier waves, data signals, or other transport mechanism. Signal media also include any information delivery media. The term “modulated data signal” means a signal that has one or more of its characteristics set or changed in such a manner as to encode information in the signal. By way of example, and not limitation, communication media include wired media such as a wired network or direct-wired connection, and wireless media such as acoustic, RF, infrared, and other wireless media. 
     As previously described, hardware elements  1410  and computer-readable media  1406  are representative of modules, programmable device logic and/or fixed device logic implemented in a hardware form that may be employed in some embodiments to implement at least some aspects of the techniques described herein, such as to perform one or more instructions. Hardware may include components of an integrated circuit or on-chip system, microcontroller devices, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), a complex programmable logic device (CPLD), and other implementations in silicon or other hardware. In this context, hardware may operate as a processing device that performs program tasks defined by instructions and/or logic embodied by the hardware as well as a hardware utilized to store instructions for execution, e.g., the computer-readable media described previously. 
     Combinations of the foregoing may also be employed to implement various techniques described herein. Accordingly, software, hardware, or executable modules may be implemented as one or more instructions and/or logic embodied on some form of computer-readable media and/or by one or more hardware elements  1410 . The computing device  1402  may be configured to implement particular instructions and/or functions corresponding to the software and/or hardware modules. Accordingly, implementation of a module that is executable by the computing device  1402  as software may be achieved at least partially in hardware, e.g., through use of computer-readable media and/or hardware elements  1410  of the processing system  1404 . The instructions and/or functions may be executable/operable by one or more articles of manufacture (for example, one or more computing devices  1402  and/or processing systems  1404 ) to implement techniques, modules, and examples described herein. 
     CONCLUSION 
     Although the example implementations have been described in language specific to structural features and/or methodological acts, it is to be understood that the implementations defined in the appended claims is not necessarily limited to the specific features or acts described. Rather, the specific features and acts are disclosed as example forms of implementing the claimed features.