TWI728863B - Antenna radiation pattern measurement system - Google Patents

Abstract

An antenna radiation pattern measurement system comprises a test box, a jig unit and a compact antenna test range (CATR) measurement device. The jig unit is arranged on the top of the test box, and the jig unit is used to set a chip. The CATR measurement device comprises a fixed base, an inner L-shaped arm, a feeder, a reflector, an outer L-shaped arm, a first rotator and a second rotator. The feeder and the reflector are disposed at opposite ends of the inner L-shaped arm. The first rotator is connected between the outer L-shaped arm and the inner L-shaped arm, and drives the inner L-shaped arm to swing back and forth under the jig unit around a first central axis. The second rotator is connected between the outer L-shaped arm and the fixed base, and drives the outer L-shaped arm to rotate around a second central axis. The first central axis and the second central axis are perpendicular to each other. By designing the inner L-shaped arm to swing back and forth under the jig unit, power consumption and vibration can be reduced compared to the prior art.

Description

Antenna radiation field measurement system

The invention relates to a measurement system, especially an antenna radiation field measurement system used for measuring communication chips.

Figure 1 is an embodiment of the application number 106123414. In this embodiment, the arm 11 mainly swings back and forth above the bracket 12, and cooperates with the bracket 12 that rotates in place to pair an antenna to be tested (not shown in the figure, it needs Put it on the bracket) to measure the radiation field pattern of the upper hemispherical antenna.

Refer to Figure 2. The disadvantage of this traditional design is that the swing arm 11 mainly swings back and forth in the upper half plane away from the ground. When the swing arm swings from θ=0 degrees to the position of θ=90 degrees as shown in Fig. 1, because The relationship of the earth's gravity g will make the spiral arm 11 bear a downward gravity f=m×g, but then it needs to use the torque generated by the motor to oppose the two forces of gravity and inertia, and turn the spiral arm 11 against the trend to convert upwards. Direction, so it will cause the problem of instantaneous power consumption increase and vibration of the motor.

In addition, this prior art is not suitable for direct measurement of a chip containing an antenna.

In order to solve the problems of the prior art, the present invention proposes an antenna radiation field pattern measurement system.

The antenna radiation field measurement system of the present invention includes a test box and a fixture unit And a distance measuring device.

The test box includes an opening on the top of the box, and a bottom of the box facing the opening at intervals.

The jig unit is set at the position of the window to set a communication device to be tested, such as a chip that includes at least an antenna, and includes a first bearing portion, a second bearing portion, a connecting portion, and a Probe, a needle holder and an electron microscope.

The first supporting part is fixed on the opening window of the top of the test box, and the appearance is a disc shape and has a through hole. The second bearing part also has a disc-shaped appearance and has a through hole. The second bearing part is used to bear the communication device to be tested. When the second bearing part bears the communication device to be tested, the second bearing part bears the communication device to be tested. The through hole of the two supporting parts is located under the communication device. The aperture of the through hole of the second supporting portion is gradually wider from narrower, and the aperture adjacent to the communication device is the smallest, and the aperture far away from the communication device is the largest. For example, the through hole of the second bearing portion is in the shape of a cone truncated with sharp corners.

The connecting portion is used for connecting the first bearing portion and the second bearing portion. The tip of the probe is used to touch an antenna signal feed point of the communication device, and the blunt end of the probe is electrically connected with a coaxial cable.

The needle base includes a three-way displacer, a probe clamp and an extension rod.

The three-way displacer is arranged on the first bearing part, and the three-way displacer is used for linking the entire jig unit to fine-tune the three-dimensional displacement, so that the tip of the probe is aligned with the antenna signal feed point. The probe clamp is arranged at a position adjacent to the through hole of the second carrying part to clamp the probe. Two ends of the extension rod are respectively connected with the probe clamp and the three-way displacer, so as to extend the distance between the probe clamp and the three-way displacer. The electron microscope passes through the communication of the first carrying part The hole is aligned with the probe.

The narrowing field measuring device is used to measure the radiation field pattern of the hemispherical antenna of the communication device facing the bottom of the box, and includes a fixed base, an inner L-shaped arm, a feed antenna, a reflector, and an outer L The shaped arm, a first rotator and a second rotator.

The fixed base is arranged at the bottom of the box.

The inner L-shaped arm includes a first straight arm and a second straight arm that are connected.

The feed antenna is arranged on the first straight arm, the reflector is arranged on the second straight arm, and the reflector reflects electromagnetic waves originating from the feed antenna to a measurement area of the fixture unit.

The outer L-shaped arm includes a third straight arm and a fourth straight arm that are connected.

The first rotator is connected between the first straight arm and the third straight arm, and the first rotator drives the inner L-shaped arm to oscillate around a first central axis under the fixture unit.

The second rotator is connected between the fixed base and the fourth straight arm, and the second rotator drives the outer L-shaped arm to rotate around a second central axis, the second central axis and the first center The axes are perpendicular to each other.

The effect of the present invention is that due to gravity, the inner L-shaped arm is designed to swing around a first central axis below the fixture unit to save power compared with rotating back and forth above the fixture unit. Especially when the inner L-shaped arm swings to the highest point relative to the ground to swing in the opposite direction, the gravity and the swing direction of the inner L-shaped arm are consistent, rather than the opposite as in the prior art. Therefore, the first aspect of the present invention is The rotator can change the swing direction of the inner L-shaped arm with lower power consumption, and at the same time reduce the vibration generated when the motor torque is opposed to the earth's gravity. In addition, the fixture unit of the present invention is more suitable for the amount of 5G package antenna (AiP) Measurement.

11: Spiral arm

12: Bracket

2: test box

21: Box top

211: open window

22: bottom of the box

3: Fixture unit

31: The first bearing part

311: Through Hole

32: The second bearing part

321: Through hole

33: Connection part

34: Probe

35: Needle seat

351: Three-way Displacer

352: Probe Clip

353: Extension Rod

36: Electron microscope

4: Distance measurement device

41: fixed base

42: inner L-arm

421: first straight arm

422: second straight arm

43: feed antenna

44: reflector

45: Outer L-arm

451: Third Straight Arm

452: Fourth Straight Arm

46: The first spinner

47: second spinner

5: Communication device

θ : first central axis

ψ: second central axis

Figure 1 is a schematic diagram of a traditional antenna radiation field measurement system.

Figure 2 is a schematic diagram illustrating the shortcomings of the traditional antenna radiation field measurement system.

Figure 3 is a schematic diagram of a preferred embodiment of the present invention.

Figure 4 is a schematic diagram of the preferred embodiment of the present invention excluding the test box.

Figure 5 is a schematic cross-sectional view of the fixture unit of the preferred embodiment.

Figure 6 is another schematic diagram of the preferred embodiment of the present invention excluding the test box.

Figure 7 is a partial schematic diagram of the fixture unit and the communication device.

Figure 8 is a schematic diagram illustrating the advantages of the preferred embodiment of the present invention.

3 to 4, the preferred embodiment of the antenna radiation field measurement system of the present invention includes a test box 2, a jig unit 3, and a narrowing field measurement device 4.

The test box 2 includes an opening 211 on the top 21 of the box, and a bottom 22 facing the opening 211 at intervals.

The fixture unit 3 is set at the position of the window 211 to set a communication device 5 to be tested, such as a chip including at least an antenna, and includes a first carrying portion 31, a second carrying portion 32, A connecting part 33, a probe 34 (FIG. 7), a needle holder 35, and an electron microscope 36.

The first supporting portion 31 is fixed on the window 211 of the top 21 of the test box 2, and has a disc-shaped appearance and has a through hole 311. The second supporting portion 32 also has a disc-shaped appearance and has a through hole 321. The second supporting portion 32 is used for supporting the communication device 5 to be tested, and the second supporting portion 32 is used for supporting the communication device 5 to be tested. When the supporting portion 32 carries the communication device 5 to be tested, the through hole 321 of the second supporting portion 32 is below the communication device 5. As shown in FIG. 7, the aperture of the through hole 321 of the second supporting portion 32 is gradually wider from narrower, and the aperture adjacent to the communication device 5 is the smallest, and the aperture far away from the communication device 5 is the largest. For example, the through hole 321 of the second supporting portion 32 is in the shape of a cone with sharp corners truncated.

The connecting portion 33 is used to connect the first supporting portion 31 and the second supporting portion 32. The tip of the probe 34 is used to touch an antenna signal feed point of the communication device 5, and the blunt end of the probe 34 is used to electrically connect a coaxial cable (not shown).

4 and 5, the needle base 35 includes a three-way displacer 351, a probe holder 352, and an extension rod 353.

The three-way displacer 351 is disposed on the first bearing portion 31, and the three-way displacer 351 is used to link the entire jig unit 3 to fine-tune the three-dimensional displacement, so that the tip of the probe 34 is aligned with the communication The antenna signal feed point of the device 5. The probe clamp 352 is disposed at a position adjacent to the through hole 321 of the second supporting portion 32 to clamp the probe 34. Two ends of the extension rod 353 are respectively connected to the probe holder 352 and the three-way displacer 351 to extend the distance between the probe holder 352 and the three-way displacer 351. The electron microscope 36 is aligned with the probe 34 through the through hole 311 of the first supporting portion 31.

The retraction field measuring device 4 is used to measure the radiation field pattern of the hemispherical antenna of the communication device 5 facing the bottom 22 of the box. The opening of the radiation field pattern of the hemispherical antenna faces the top 21 of the box. The retraction field measuring device 4 includes a fixed base 41, an inner L-shaped arm 42, a feed antenna 43, a reflector 44, an outer L-shaped arm 45, a first rotator 46, and a second rotator 47.

The fixed base 41 is disposed on the bottom 22 of the box.

The inner L-shaped arm 42 includes a first straight arm 421 and a second straight arm that are connected 422.

The feed antenna 43 is arranged on the first straight arm 421 perpendicular to the box bottom 22, the reflector 44 is arranged on the second straight arm 422 parallel to the box bottom 22, and the reflector 44 will be derived from the feed antenna The electromagnetic wave 43 is reflected to a measurement area of the fixture unit 3, and the communication device 5 is placed in the measurement area when being tested.

The outer L-shaped arm 45 includes a third straight arm 451 and a fourth straight arm 452 connected to each other. The third straight arm 451 is perpendicular to the bottom 22 of the box, and the fourth straight arm 452 is parallel to the bottom 22 of the box.

The first rotator 46 is connected between the first straight arm 421 and the third straight arm 451, and the first rotator 46 is driven by a motor to drive the inner L-shaped arm 42 around a first central axis θ swings back and forth below the fixture unit 3, and the maximum angle range of θ is 180 degrees.

The second rotator 47 is connected between the fixed base 41 and the fourth straight arm 452. The second rotator 47 drives the outer L-shaped arm 45 to rotate around a second central axis ψ, and the second center The axis ψ and the first central axis θ are perpendicular to each other, and the maximum angle range of ψ is 360 degrees.

FIG. 6 shows that the jig unit 3 and the retracted field measuring device 4 are rotated by an angle to facilitate the understanding of the structure.

The beneficial effect of the present invention is that as shown in FIG. 8, the inner L-shaped arm 42 is designed to swing back and forth under the fixture unit 3 around the first central axis θ. The upper back and forth rotation saves power consumption, especially when the inner L-shaped arm 42 swings to the highest point relative to the ground, the gravity f is the same as the swing direction of the inner L-shaped arm 42 instead of the previous technique. On the contrary, the first rotator 46 of the present invention can change the swing direction of the inner L-shaped arm 42 with lower power consumption, and at the same time reduce the vibration generated when the motor torque is opposed to the earth's gravity. In addition, the treatment of the present invention Unit 3 is more suitable for 5G package antenna (AiP) measurement.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

3: Fixture unit

31: The first bearing part

32: The second bearing part

33: Connection part

35: Needle seat

351: Three-way Displacer

352: Probe Clip

353: Extension Rod

36: Electron microscope

4: Distance measurement device

41: fixed base

42: inner L-arm

421: first straight arm

422: second straight arm

43: feed antenna

44: reflector

45: Outer L-arm

451: Third Straight Arm

452: Fourth Straight Arm

46: The first spinner

47: second spinner

θ : first central axis

ψ: second central axis

Claims (6)

An antenna radiation field measurement system, comprising: a test box, including an opening on the top of the box, and a bottom of the box facing the opening at intervals; a fixture unit arranged at the position of the opening, and the treatment The tool unit is used to set a communication device to be tested; and a short-distance field measuring device to measure the radiation field pattern of the hemispherical antenna of the communication device facing the bottom of the box, including: a fixed base set on the bottom of the box An inner L-shaped arm, including a first straight arm and a second straight arm connected; a feed antenna, arranged on the first straight arm; a reflector, arranged on the second straight arm, the reflection The device reflects electromagnetic waves from the feed antenna to a measurement area of the fixture unit; an outer L-shaped arm, including a third straight arm and a fourth straight arm connected to each other; a first rotator, Connected between the first straight arm and the third straight arm, the first rotator drives the inner L-shaped arm to oscillate around a first central axis under the fixture unit; and a second rotator , Connected between the fixed base and the fourth straight arm, the second rotator drives the outer L-shaped arm to rotate around a second central axis, and the second central axis and the first central axis are perpendicular to each other, The jig unit includes a first carrying part, a second carrying part and a connecting part, The first supporting part is fixed on the opening window of the top of the test box and has a disc-shaped appearance with a through hole. The second supporting part also has a disc-shaped appearance and has a through hole. The carrying part is used to carry the communication device to be tested, and when the second carrying part carries the communication device to be tested, the through hole of the second carrying part is located below the communication device, and the connecting part is used to connect the The first bearing portion and the second bearing portion, the fixture unit further includes a probe and a needle holder, the tip of the probe is used to touch an antenna signal feed point of the communication device, and the needle holder includes: A three-way displacer disposed on the first bearing part, the three-way displacer used for linking the entire jig unit to fine-tune the three-dimensional displacement, so that the tip of the probe is aligned with the antenna signal feed point; A probe clamp is arranged at a position adjacent to the through hole of the second carrying portion to clamp the probe; and an extension rod, both ends of which are respectively connected to the probe clamp and the three-way displacement device for extension The distance between the probe clamp and the three-way displacer. The antenna radiation field measurement system according to the first item of the scope of patent application, wherein the maximum angle range of the outer L-shaped arm rotating around the second central axis is 360 degrees, and the inner L-shaped arm around the first central axis The maximum rotation angle range is 180 degrees, the first central axis is parallel to the bottom of the box, and the second central axis is perpendicular to the bottom of the box. The antenna radiation field measurement system according to the first item of the scope of patent application, wherein the fixture unit further includes an electron microscope, and the electron microscope is aligned with the probe through the through hole of the first carrying part. The antenna radiation field measurement system according to the first item of the scope of patent application, wherein the aperture of the through hole of the second carrying part is narrower and wider, and the aperture near the communication device is the smallest, and the aperture far away from the communication device maximum. According to the antenna radiation field measurement system according to item 4 of the scope of patent application, the through hole of the second bearing part is in the shape of a cone with sharp corners truncated. An antenna radiation field measurement system, including: a chip to be tested, the chip including at least one antenna; a test box, including an opening on the top of the box, and a bottom of the box facing the opening at intervals; and a fixture The unit is arranged at the position where the window is opened, and the jig unit is used to set the chip; and a distance measurement device for measuring the radiation field pattern of the hemispherical antenna facing the bottom of the box, including: a The fixed base is set on the bottom of the box; an inner L-shaped arm, including a first straight arm and a second straight arm connected to each other; a feed antenna, set on the first straight arm; a reflector, set on the For the second straight arm, the reflector reflects electromagnetic waves originating from the feed antenna to a measurement area of the fixture unit; An outer L-shaped arm includes a third straight arm and a fourth straight arm that are connected; a first rotator is connected between the first straight arm and the third straight arm, and the first rotator drives The inner L-shaped arm rotates around a first central axis; and a second rotator is connected between the fixed base and the fourth straight arm, and the second rotator drives the outer L-shaped arm around a The second central axis rotates, and the second central axis and the first central axis are perpendicular to each other. The fixture unit includes a first bearing portion, a second bearing portion, and a connecting portion. The first bearing portion is fixed to the test The window on the top of the box is shaped like a disc and has a through hole. The second carrying part is also shaped like a disc and has a through hole. The second carrying part is used to carry the test object. Communication device, and when the second carrying part carries the communication device to be tested, the through hole of the second carrying part is located below the communication device, and the connecting part is used to connect the first carrying part and the second carrying part The fixture unit also includes a probe and a needle holder. The tip of the probe is used to touch an antenna signal feed point of the communication device. The blunt end of the probe is electrically connected to a coaxial cable. The base includes: a three-way displacement device arranged on the first bearing part, the three-way displacement device is used to link the entire fixture unit to perform fine adjustment of the three-dimensional displacement, so that the tip of the probe is aligned with the antenna signal feed Entry point A probe clamp is arranged at a position adjacent to the through hole of the second carrying portion to clamp the probe; and an extension rod, both ends of which are respectively connected to the probe clamp and the three-way displacement device for extension The distance between the probe clamp and the three-way displacer.

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