Antenna coupling test device

Abstract

An antenna coupling test device relates to the technical field of antennas. The utility model provides an antenna coupling test device, which comprises an EVB carrier plate for placing a to-be-tested communication module and a test frame, and is characterized in that the test frame comprises a support and an antenna frame, and the support surrounds the periphery of the EVB carrier plate; the antenna frame is arranged on the bracket and is used for getting close to or away from the EVB carrier plate; the antenna frame comprises a hollow frame body and an antenna carrier plate movably arranged on the frame body, the antenna carrier plate is used for placing an antenna, and the antenna carrier plate moves along the plane where the frame body is located. According to the antenna coupling test device obtained through the design, the relative position of the antenna and the communication module to be tested can be changed in a simple, convenient and efficient test mode, so that the use scenes of different terminal communication devices are simulated, and the test reliability and accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, and in particular, to an antenna coupling test device. Background Art

[0002] Nowadays, with the rise of the communication equipment industry, radio frequency communication modules are widely used in various terminal communication devices. In terminal communication devices, the radiation power of the antenna and the excellent radio frequency performance of the coupling interact with the radio frequency communication module, jointly determining the reliability of the terminal communication device. Therefore, for terminal communication devices with antennas, before shipment, they must all undergo tests such as the radiation power and radiation sensitivity of the radio frequency communication module.

[0003] Currently, the common test method is to connect the radio frequency communication module and the antenna through a radio frequency cable to conduct performance tests, or to connect the radio frequency communication module through an external antenna with better transmission efficiency to conduct coupling performance tests. However, it is often impossible to simulate the usage scenarios of complex and changeable terminal communication devices, resulting in low reliability and accuracy of the tests. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an antenna coupling test device, which can change the relative positions of the antenna and the communication module to be tested in a simple and efficient test manner, thereby simulating the usage scenarios of different terminal communication devices and improving the reliability and accuracy of the tests.

[0005] The embodiments of the utility model are implemented as follows:

[0006] On one hand, the utility model provides an antenna coupling test device, including an EVB carrier board for placing the communication module to be tested and a test frame. The test frame includes a bracket and an antenna frame. The bracket surrounds the periphery of the EVB carrier board; the antenna frame is arranged on the bracket and is used to approach or move away from the EVB carrier board; the antenna frame includes a hollow frame body and an antenna carrier board movably arranged on the frame body. The antenna carrier board is used to place the antenna, and the antenna carrier board moves along the plane where the frame body is located.

[0007] Optionally, the antenna carrier board includes a body and moving brackets arranged on opposite sides of the body. The moving brackets and the board surface of the body are on the same horizontal plane; the body is arranged on the frame body through the moving brackets and is oppositely arranged with the communication module to be tested through the hollow part of the frame body.

[0008] Optionally, positioning holes are formed on the moving brackets, and fixing holes corresponding to the positioning holes are formed on the frame body. The positioning holes of the moving brackets are coaxially arranged with the fixing holes and are penetrated by fixing pieces to be connected with the frame body.

[0009] Optionally, there are multiple fixing holes, and the multiple fixing holes are evenly distributed on the frame body, and a preset interval is provided between any two fixing holes.

[0010] Optionally, first through slots are formed in opposite sides of the frame body. The opening direction of the first through slots is the same as the extending direction of the moving bracket. The moving bracket is inserted into the first through slots and moves along the first through slots.

[0011] Optionally, second through slots are formed in the moving bracket on a surface parallel to the plate surface of the main body; third through slots are formed in opposite sides of the frame body on a surface parallel to the plate surface of the main body; when the moving bracket is inserted into the first through slots, the second through slots and the third through slots intersect to form an intersecting slot for clamping a fixing member.

[0012] Optionally, mounting holes are provided at the periphery of the frame body. The frame body is movably connected to the bracket through the mounting holes and slides along the bracket to approach or move away from the EVB carrier board.

[0013] Optionally, the bracket is a telescopic structure. The periphery of the EVB carrier board is fixedly connected to the telescopic part of the bracket. The bracket expands and contracts along the set direction to drive the EVB carrier board to approach or move away from the antenna frame.

[0014] Optionally, the bracket is a telescopic structure. Mounting holes are provided at the periphery of the frame body. The frame body is fixedly connected to the telescopic part of the bracket through the mounting holes. The bracket expands and contracts along the set direction to drive the frame body to approach or move away from the EVB carrier board.

[0015] Optionally, pulleys are provided at the periphery of the EVB carrier board. A slide rail is correspondingly provided on the side of the bracket facing the EVB carrier board. The EVB carrier board is movably connected to the slide rail of the bracket through the pulleys to approach or move away from the antenna frame.

[0016] The beneficial effects of the present utility model include:

[0017] The present application provides an antenna coupling test device, including an EVB carrier board for placing a communication module to be tested and a test frame. The test frame includes a bracket and an antenna frame. The bracket surrounds the periphery of the EVB carrier board; the antenna frame is arranged on the bracket and is used to approach or move away from the EVB carrier board; the antenna frame includes a hollow frame body and an antenna carrier board movably arranged on the frame body. The antenna carrier board is used to place an antenna, and the antenna carrier board moves along the plane where the frame body is located. The antenna coupling test device obtained by the above design can change the relative position between the antenna and the communication module to be tested in a simple and efficient test manner, so as to simulate the usage scenarios of different terminal communication devices and improve the reliability and accuracy of the test. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show certain embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related accompanying drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic structural diagram of the antenna coupling test device provided by the embodiment of the present utility model;

[0020] Figure 2 Schematic structural diagram of the connection between the bracket and the EVB carrier board provided by the embodiment of the present utility model;

[0021] Figure 3 One of the schematic structural diagrams of the antenna frame provided by the embodiment of the present utility model;

[0022] Figure 4 Another schematic structural diagram of the antenna frame provided by the embodiment of the present utility model.

[0023] Icons: 100 - antenna coupling test device; 110 - EVB carrier board; 120 - bracket; 130 - antenna frame; 131 - frame body; 1311 - first through groove; 1312 - mounting hole; 1313 - third through groove; 132 - antenna carrier board; 1321 - body; 1322 - moving bracket; 1322a - positioning hole; 1322b - second through groove; 200 - communication module to be tested; 210 - RF coaxial cable. Detailed implementation manners

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0026] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0028] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Please refer to Figure 1 , this application discloses an antenna coupling test device 100, which includes an EVB carrier board 110 for placing a communication module 200 to be tested and a test frame. The test frame includes a bracket 120 and an antenna frame 130. The bracket 120 surrounds the periphery of the EVB carrier board 110; the antenna frame 130 is disposed on the bracket 120 and is used to approach or move away from the EVB carrier board 110; the antenna frame 130 includes a hollow frame body 131 and an antenna carrier board 132 movably disposed on the frame body 131. The antenna carrier board 132 is used to place an antenna, and the antenna carrier board 132 moves along the plane where the frame body 131 is located.

[0031] It should be noted that, firstly, the communication module 200 to be tested is arranged on the surface of the EVB carrier board 110. The EVB carrier board 110 can supply electrical energy to the communication module 200 to be tested to achieve antenna coupling testing. An antenna is placed on the surface of the antenna carrier board 132. The communication module 200 to be tested is arranged facing the antenna carrier board 132. A radio frequency interface is provided on the communication module 200 to be tested. One end of the radio frequency coaxial cable 210 can be plugged into the radio frequency interface, and the other end is connected to the antenna, so as to perform coupling testing through the antenna to test the radiation power and radiation sensitivity of the communication module 200 to be tested. Among them, the radiation power is the intensity of the radio frequency transmission signal of the communication module, and the radiation sensitivity is the ability to receive radio frequency signals.

[0032] Secondly, as Figure 1 and Figure 2 shown, there are multiple brackets 120. The multiple brackets 120 surround the periphery of the EVB carrier board 110. The brackets 120 are arranged on the periphery of the EVB carrier board 110. The antenna frame 130 is arranged on the brackets 120. The brackets 120 can play a certain supporting role for the antenna frame 130 to ensure a preset interval between the antenna frame 130 and the EVB carrier board 110. The antenna frame 130 and / or the EVB carrier board 110 are movably arranged on the brackets 120 to adjust the preset interval between the EVB carrier board 110 and the antenna frame 130, and then change the relative distance between the antenna and the communication module 200 to be tested, so as to simulate the usage scenarios of different terminal communication devices by changing the relative distance, and test whether the intensity of the radio frequency transmission signal or the ability to receive radio frequency signals of the communication module 200 to be tested is interfered when the relative distance between the antenna and the communication module 200 to be tested is at this value, and be able to determine the interference position of the communication module 200 to be tested according to the relative position between the antenna and the communication module 200 to be tested, and improve the communication module 200 to be tested according to the test results.

[0033] Thirdly, as Figure 3 shown, the antenna frame 130 includes a frame body 131 and an antenna carrier board 132. The frame body 131 is a hollow structure and can be connected to the bracket 120. The antenna carrier board 132 is mounted on the frame body 131 and can move left and right along the edge of the frame body 131 within the plane where the frame body 131 is located to adjust the relative position between the EVB carrier board 110 and the antenna carrier board 132 on the horizontal plane, and then change the relative position between the communication module 200 to be tested and the antenna on the horizontal plane. Furthermore, by changing the relative position on the horizontal plane, the usage scenarios of different terminal communication devices are simulated, and it is tested whether the intensity of the radio frequency transmission signal or the ability to receive radio frequency signals of the communication module 200 to be tested is interfered when the relative distance between the antenna and the communication module 200 to be tested is at this value, and be able to determine the position where the communication module 200 to be tested is interfered according to the relative position between the antenna and the communication module 200 to be tested, and improve the communication module 200 to be tested according to the test results.

[0034] During the actual testing process, the relative distance and the relative position on the horizontal plane between the EVB carrier board 110 and the antenna carrier board 132 can be adjusted simultaneously to perform coupling tests at different positions in the transverse and longitudinal directions, so as to determine whether the intensity of the radio frequency transmission signal or the radio frequency reception signal ability of the communication module 200 to be tested is interfered at the preset position, improving the reliability and accuracy of the testing process; if there is interference with the communication module 200 to be tested at this position, the interference position of the communication module 200 to be tested can be determined in time, and the communication module 200 to be tested can be improved according to the test results, further improving the reliability of the communication module 200 to be tested.

[0035] The present application provides an antenna coupling test device 100, which includes an EVB carrier board 110 for placing the communication module 200 to be tested and a test frame. The test frame includes a bracket 120 and an antenna frame 130. The bracket 120 surrounds the periphery of the EVB carrier board 110; the antenna frame 130 is arranged on the bracket 120 and is used to approach or move away from the EVB carrier board 110; the antenna frame 130 includes a hollow frame body 131 and an antenna carrier board 132 movably arranged on the frame body 131. The antenna carrier board 132 is used to place the antenna, and the antenna carrier board 132 moves along the plane where the frame body 131 is located. The antenna coupling test device 100 obtained by the above design can change the relative position between the antenna and the communication module 200 to be tested in a simple and efficient test manner, so as to simulate the usage scenarios of different terminal communication devices, improving the reliability and accuracy of the test.

[0036] Exemplarily, as Figure 3 shown, the antenna carrier board 132 includes a main body 1321 and moving brackets 1322 arranged on opposite sides of the main body 1321. The moving brackets 1322 and the plate surface of the main body 1321 are located on the same horizontal plane; the main body 1321 is arranged on the frame body 131 through the moving brackets 1322 and is oppositely arranged with the communication module 200 to be tested through the hollow part of the frame body 131.

[0037] Specifically, as Figure 3As shown in the figure, in order to enable the antenna carrier board 132 to be stably connected to the frame 131 while carrying the antenna, the antenna carrier board 132 includes a main body 1321 and a movable bracket 1322. The main body 1321 is used to carry the antenna. The movable bracket 1322 extends from opposite sides of the main body 1321, and the plate surface of the movable bracket 1322 is on the same horizontal plane as that of the main body 1321. The length of the movable bracket 1322 should be at least long enough to be placed on the frame 131 so that the antenna carrier board 132 is arranged on the frame 131. Of course, the longer the length of the movable bracket 1322, the better the stability of the antenna carrier board 132 placed on the frame 131. When the movable bracket 1322 is placed on the frame 131, the main body 1321 is arranged in the hollow part of the frame 131 to be oppositely arranged with the communication module 200 to be tested, which is convenient for checking the relative distance between the communication module 200 to be tested and the antenna carrier board 132, and further improves the reliability and accuracy of the test process.

[0038] In an implementable manner of the present application, as Figure 3 shown, a positioning hole 1322a is provided on the movable bracket 1322, and a fixing hole corresponding to the positioning hole 1322a is provided on the frame 131. The positioning hole 1322a of the movable bracket 1322 is coaxially arranged with the fixing hole and a fixing member is passed through to connect with the frame 131. Through the arrangement between the positioning hole 1322a and the fixing hole, the connection between the movable bracket 1322 and the frame 131 can be more stable and reliable, preventing the movable bracket 1322 from driving the main body 1321 and the antenna arranged on the main body 1321 to shift in position during the test process, and improving the accuracy and reliability of the test process.

[0039] It should be noted that multiple fixing holes are provided, and the multiple fixing holes are evenly distributed on the frame 131, and a preset interval is provided between any two fixing holes. Through the arrangement of the multiple fixing holes, the movable bracket 1322 can move flexibly along the frame 131 and can make the positioning hole 1322a coaxial with the fixing hole when moving to the preset position to insert the fixing member to fixedly connect the movable bracket 1322 with the frame 131.

[0040] In another implementable manner of the present application, as Figure 4 shown, first through grooves 1311 are provided on opposite sides of the frame 131, and the opening direction of the first through grooves 1311 is the same as the extending direction of the movable bracket 1322. The movable bracket 1322 passes through the first through grooves 1311 and moves along the first through grooves 1311.

[0041] Specifically, as Figure 4As shown, first through slots 1311 start from opposite sides of the frame body 131. The first through slots 1311 are provided on the side edges of the frame body 131, and the opening direction of their slot mouths is the same as the extending direction of the moving bracket 1322, so as to facilitate the moving bracket 1322 to pass through the first through slots 1311 and be able to move along the first through slots 1311. Through such a setting method, the moving bracket 1322 is clamped in the first through slots 1311, with better stability and a more stable moving process.

[0042] It should be noted that, as Figure 4 shown, in order to further improve the stability between the frame body 131 and the moving bracket 1322, the moving bracket 1322 is provided with second through slots 1322b. The second through slots 1322b are opened on the side of the moving bracket 1322 parallel to the plate surface of the body 1321, that is, the slot mouths of the second through slots 1322b and the plate surface of the body 1321 are on the same horizontal plane; third through slots 1313 are opened on opposite sides of the frame body 131. The third through slots 1313 are opened on the side of the frame body 131 parallel to the plate surface of the body 1321, that is, the slot mouths of the third through slots 1313 and the plate surface of the body 1321 are on the same horizontal plane; when the moving bracket 1322 passes through the first through slots 1311, the second through slots 1322b and the third through slots 1313 intersect to form an intersecting slot, and the intersecting slot is used to clamp a fixing member to prevent the moving bracket 1322 from driving the body 1321 and the antenna provided on the body 1321 to shift in position during the test, improving the accuracy and reliability of the test process.

[0043] In an alternative solution of the present application, mounting holes 1312 are provided on the periphery of the frame body 131. The bracket 120 can pass through the mounting holes 1312 so that the frame body 131 is movably connected to the bracket 120 through the mounting holes 1312 and can slide along the bracket 120 to approach or move away from the EVB carrier board 110. By fixing the position of the EVB carrier board 110, the frame body 131 slides along the extending direction of the bracket 120 through the mounting holes 1312 to approach or move away from the EVB carrier board 110, thereby changing the relative distance between the EVB carrier board 110 and the antenna frame 130.

[0044] In another alternative solution of the present application, the bracket 120 is a telescopic structure, which has a telescopic end and a fixed end. The telescopic end can telescope relative to the fixed end to adjust the length of the bracket 120; the periphery of the EVB carrier board 110 is fixedly connected to the telescopic part of the bracket 120. At this time, the antenna frame 130 is arranged at the fixed end of the bracket 120; the bracket 120 can telescope along the set direction to drive the EVB carrier board 110 to approach or move away from the antenna frame 130. By fixedly connecting the EVB carrier board 110 to the telescopic end of the bracket 120, when the telescopic end telescopes relative to the fixed end, it can drive the EVB carrier board 110 to approach or move away from the antenna frame 130, thereby changing the relative distance between the EVB carrier board 110 and the antenna frame 130.

[0045] In another alternative solution of the present application, the bracket 120 is a telescopic structure, which has a telescopic end and a fixed end. The telescopic end can telescope relative to the fixed end to adjust the length of the bracket 120; mounting holes 1312 are provided on the periphery of the frame body 131, and the frame body 131 is fixedly connected to the telescopic part of the bracket 120 through the mounting holes 1312. At this time, the EVB carrier board 110 is fixedly connected to the fixed end of the bracket 120; the bracket 120 can telescope along the set direction to drive the frame body 131 to approach or move away from the EVB carrier board 110. By fixedly connecting the frame body 131 of the antenna frame 130 to the telescopic end of the bracket 120, when the telescopic end telescopes relative to the fixed end, it can drive the antenna frame 130 to approach or move away from the EVB carrier board 110, thereby changing the relative distance between the EVB carrier board 110 and the antenna frame 130.

[0046] In another alternative solution of the present application, pulleys are provided on the periphery of the EVB carrier board 110, and sliding rails are correspondingly provided on the side of the bracket 120 facing the EVB carrier board 110. The EVB carrier board 110 is movably connected to the sliding rails of the bracket 120 through the pulleys to approach or move away from the antenna frame 130, and the antenna frame 130 can be fixedly connected to the bracket 120. Through the arrangement of the pulleys and the sliding rails, the EVB carrier board 110 can slide along the extending direction of the bracket 120, thereby changing the relative distance between the EVB carrier board 110 and the antenna frame 130.

[0047] It should be noted that, in addition to making the EVB carrier board 110 movably connected to the bracket 120 and making the antenna frame 130 fixedly connected to the bracket 120 in the above solutions, it is also possible to make the antenna frame 130 movably connected to the bracket 120 and make the EVB carrier board 110 fixedly connected to the bracket 120; of course, it is also possible that both the antenna frame 130 and the EVB carrier board 110 are movably connected to the bracket 120, as long as the relative distance between the EVB carrier board 110 and the antenna frame 130 can be adjusted, so as to simulate the usage scenarios of different terminal communication devices according to different relative distances, and improve the accuracy and reliability of the test. The present application does not impose any restrictions on the specific setting methods of the antenna frame 130 and the bracket 120.

[0048] The above are only optional embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0049] In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present utility model will not separately describe various possible combination methods.

Claims

1. An antenna coupling test device, characterized in that: It includes an EVB carrier board and a test frame for placing a communication module to be tested, wherein the test frame includes a bracket and an antenna frame, wherein the bracket is arranged around the periphery of the EVB carrier board; the antenna frame is arranged on the bracket and is used to approach or move away from the EVB carrier board; the antenna frame includes a hollow frame body and an antenna carrier board movably arranged on the frame body, wherein the antenna carrier board is used to place an antenna, and the antenna carrier board moves along the plane where the frame body is located.

2. The antenna coupling test device according to claim 1, characterized in that: The antenna carrier includes a main body and a movable bracket arranged on opposite sides of the main body, and the movable bracket and the board surface of the main body are located in the same horizontal plane; the main body is arranged on the frame through the movable bracket, and is arranged relative to the communication module to be tested through the hollow part of the frame.

3. The antenna coupling test device according to claim 2, characterized in that: The movable bracket is provided with a positioning hole, and the frame is provided with a fixing hole corresponding to the positioning hole. The positioning hole of the movable bracket is connected to the frame by being coaxially arranged with the fixing hole and passing a fixing piece.

4. The antenna coupling test device according to claim 3, characterized in that: There are a plurality of fixing holes, and the plurality of fixing holes are evenly distributed on the frame, and there is a preset interval between any two fixing holes.

5. The antenna coupling test device according to claim 2, characterized in that: First through slots are formed on opposite sides of the frame, and the opening direction of the first through slots is the same as the extending direction of the movable bracket. The movable bracket is inserted into the first through slots and moves along the first through slots.

6. The antenna coupling test device according to claim 5, characterized in that: The movable bracket is provided with a second through slot, which is provided on a side of the movable bracket parallel to the plate surface of the main body; the frame body is provided with a third through slot on opposite sides, which is provided on a side of the frame body parallel to the plate surface of the main body; when the movable bracket is inserted into the first through slot, the second through slot intersects with the third through slot to form an intersecting slot, which is used to clamp a fixing piece.

7. The antenna coupling test device according to claim 1, characterized in that: The periphery of the frame is provided with mounting holes, and the frame is movably connected to the bracket through the mounting holes and slides along the bracket to approach or move away from the EVB carrier board.

8. The antenna coupling test device according to claim 1, characterized in that: The bracket is a retractable structure, the periphery of the EVB carrier is fixedly connected to the retractable portion of the bracket, and the bracket is retracted along a setting direction to drive the EVB carrier to approach or move away from the antenna frame.

9. The antenna coupling test device according to claim 1, characterized in that: The bracket is a retractable structure, and a mounting hole is provided at the periphery of the frame. The frame is fixedly connected to the retractable portion of the bracket through the mounting hole. The bracket is retracted along a setting direction to drive the frame to approach or move away from the EVB carrier board.

10. The antenna coupling test device according to claim 1, characterized in that: A pulley is provided on the periphery of the EVB carrier, and a slide rail is correspondingly provided on the side of the bracket facing the EVB carrier. The EVB carrier is movably connected to the slide rail of the bracket through the pulley to move closer to or away from the antenna frame.

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