TWI709755B - Antenna radiation measurement system for improving the stability of rf signals - Google Patents

Abstract

An antenna radiation measurement system for improving the stability of RF signals comprises a measuring arm unit, a standard antenna unit, a signal generator, a plurality of first RF transmission lines, a signal analyzer, a fixed carrier base and a plurality of second RF transmission lines. The measuring arm unit comprises a fixing seat, a first rotating arm and a second rotating arm. The first rotating arm is coupled to the fixed seat, and the second rotating arm is coupled to the first rotating arm. The standard antenna unit is disposed on the second rotating arm together with the signal generator. Each of the first RF transmission lines is electrically connected between the signal generator and the standard antenna unit. The carrying base is configured to place a device to be tested, and the device to be tested includes a plurality of antennas to be tested. Each of the second RF transmission lines is electrically connected between one of the antennas to be tested and the signal analyzer.

Description

Antenna radiation measurement system for improving the stability of radio frequency signals

The invention relates to an antenna radiation measurement system for improving the stability of radio frequency signals.

Referring to FIG. 1, the prior art antenna field measurement system is used to set in an anechoic chamber (not shown), and includes a rotation base 11, a plurality of first radio frequency transmission lines 12, and a measurement arm unit 13 , A dual-polarized standard antenna 14, two second RF transmission lines 15, and a four-port network analyzer 16.

The rotation base 11 has the function of rotating around the Z axis, and has a platform 111 on which a device under test 2 is placed. The device under test 2 includes a plurality of antennas 21 under test.

The measuring arm unit 13 includes a fixed arm 131 and a rotating arm 132. The rotating arm 132 is connected to the fixed arm 131 and can rotate around the X axis.

The dual-polarization standard antenna 14 is arranged on the rotating arm 132 and electrically connected to two second radio frequency transmission lines 15. The four-port network analyzer 16 is electrically connected to the two first radio frequency transmission lines 12 and the two second radio frequency transmission lines 15.

The disadvantage of this measurement method is that when the rotation base 11 rotates around the Z axis, the first radio frequency transmission lines 12 will be twisted together with each other. In addition, when the rotation arm When 132 rotates, the second radio frequency transmission lines 15 will also be twisted together.

The shortcomings of twisted wires will become more serious in the new generation of 5G MIMO communication applications, because 5G adopts MIMO communication and even 4x4 or 8x8 array antenna beamforming technology, up to 4 or 8 first radio frequency transmission lines 12 Or the second radio frequency transmission line 15 can hardly avoid being twisted and twisted together when rotating. Furthermore, 5G communication uses the ultra-high frequency millimeter wave frequency band, and the radio frequency coaxial transmission line (the first radio frequency transmission line 12 and the second radio frequency transmission line 15 The characteristic of) is that the higher the frequency, the smaller the wire diameter. The smaller the wire diameter, the slight concave twist will cause the signal transmission attenuation deterioration and impedance deviation of the RF coaxial transmission line, and the higher the frequency, the more expensive the RF coaxial transmission line. If it is easily damaged, it means that the cost of each measurement is very expensive.

In order to solve the problem of twisting wires in the prior art, the present invention proposes a system that does not twist the first radio frequency transmission lines 12 and the second radio frequency transmission lines 15 during measurement, so as to improve the stability of the radio frequency signal.

The antenna radiation measurement system for improving the stability of radio frequency signals of the present invention includes a measuring arm unit, a standard antenna unit, a signal generator, a plurality of first radio frequency transmission lines, a signal analyzer, a carrying base, and a plurality of 2. Radio frequency transmission line.

The measuring arm unit includes a fixing base, a first rotating arm and a second rotating arm. The fixing seat is fixedly arranged on a bottom plate. The first rotating arm is connected to the fixing base, and the first rotating arm has a function of rotating around an axis direction Z relative to the fixing base. The second rotating arm is connected to the first rotating arm, the second rotating arm has the function of rotating relative to the first rotating arm, and the second rotating arm rotates around an axis direction X, and the axis direction X corresponds to the axis The directions Z are perpendicular to each other.

The standard antenna unit and the signal generator are jointly arranged on the second rotating arm.

Each first radio frequency transmission line is electrically connected between the signal generator and the standard antenna unit.

The carrying base is fixed and includes a platform on which a device to be tested is placed, and the device to be tested includes a plurality of antennas to be tested.

Each second radio frequency transmission line is electrically connected between one of the antennas to be tested and the signal analyzer.

Preferably, the antenna radiation measurement system for improving the stability of the radio frequency signal further includes a first switch module and a waveguide. The first switch module is electrically connected between the signal generator and each first radio frequency transmission line, and the first switch module is controlled to determine electrical conduction or non-conduction between the signal generator and each first radio frequency transmission line , The second rotating arm is shielded between the standard antenna unit and the signal generator and includes a through hole, and the waveguide is disposed in the through hole and electrically connected between the first switch module and the signal generator .

Preferably, the antenna radiation measurement system for improving the stability of the radio frequency signal further includes a second switch module. The second switch module is electrically connected between the signal analyzer and each second RF transmission line, and the second switch module is controlled to determine whether the signal analyzer and each second RF transmission line are electrically conductive or non-conductive .

Preferably, the second rotating arm is shielded between the standard antenna unit and the signal generator and includes a through hole, and each first radio frequency transmission line passes through the through hole and is electrically connected to the signal generator and the standard Between antenna units.

Preferably, the number of the first radio frequency transmission lines is two, and the standard antenna The unit is a dual-polarization standard antenna. The dual-polarization standard antenna includes a horizontal polarization port and a vertical polarization port. The horizontal polarization port and the vertical polarization port are respectively electrically connected to two first radio frequency transmission lines.

Another embodiment of the antenna radiation measurement system for improving the stability of the radio frequency signal of the present invention includes a signal generator, a carrier base, a plurality of first radio frequency transmission lines, a measurement arm unit, a standard antenna unit, and a signal analysis Instrument and multiple second radio frequency transmission lines.

The signal generator includes a plurality of signal transmitting ports.

The carrying base is fixed and includes a platform on which a device to be tested is placed, and the device to be tested includes a plurality of antennas to be tested.

The first radio frequency transmission lines are electrically connected between the waiting antenna and the signal transmitting ports of the signal generator.

The measuring arm unit includes a fixing base, a first rotating arm and a second rotating arm. The fixing seat is fixedly arranged on a bottom plate. The first rotating arm is connected to the fixing base, and the first rotating arm has a function of rotating around an axis direction z relative to the fixing base. The second rotating arm is connected to the first rotating arm, the second rotating arm has the function of rotating relative to the first rotating arm, and the second rotating arm rotates around an axis direction X, and the axis direction X corresponds to the axis The directions Z are perpendicular to each other.

The standard antenna unit is arranged on the second rotating arm.

The signal analyzer is arranged on the second rotating arm and includes a plurality of signal receiving ports.

The second radio frequency transmission lines are electrically connected between the standard antenna unit and the signal receiving ports of the signal analyzer.

Preferably, the antenna radiation measurement system for improving the stability of the radio frequency signal further includes A first switch module and a second switch module. The first switch module is electrically connected between the signal generator and each first radio frequency transmission line, and the first switch module is controlled to determine electrical conduction or non-conduction between the signal generator and each first radio frequency transmission line . The second switch module is electrically connected between the signal analyzer and each second RF transmission line, and the second switch module is controlled to determine whether the signal analyzer and each second RF transmission line are electrically conductive or non-conductive .

Preferably, the antenna radiation measurement system for improving the stability of radio frequency signals further includes a waveguide, and the second rotating arm is shielded between the standard antenna unit and the signal analyzer and includes a through hole, and the waveguide is provided In the through hole, and electrically connected between the second switch module and the signal analyzer.

Preferably, the second rotating arm is shielded between the standard antenna unit and the signal analyzer and includes a through hole, and each second radio frequency transmission line passes through the through hole of the second rotating arm to be electrically connected to the signal analysis Between the instrument and the standard antenna unit.

Preferably, the number of the second radio frequency transmission lines is two, the standard antenna unit is a dual-polarization standard antenna, and the dual-polarization standard antenna includes a horizontal polarization port and a vertical polarization port. The chemical port and the vertical polarization port are respectively electrically connected to the second radio frequency transmission lines.

The effects of the present invention are:

(1) When the standard antenna unit transmits a signal and the antenna under test receives the signal correspondingly, the signal generator and the standard antenna unit are located on the second rotating arm together, so they are electrically connected to the signal generator and the The first radio frequency transmission lines between the standard antenna units will not be twisted; and the carrier base is fixed and the signal analyzer is also fixed, so it is electrically connected to the waiting antenna (antenna to be tested) The second radio frequency transmission lines between the device under test (device under test) and the signal analyzer disposed on the supporting base will not be twisted.

(2) When the antenna under test transmits a signal and the standard antenna unit receives the signal correspondingly, the carrier base is fixed and the signal generator is also fixed, so it is electrically connected to the antenna under test and the test antenna during measurement. The first RF transmission lines between the signal generator will not be twisted; and the standard antenna unit and the signal analyzer are co-located on the second rotating arm, so no matter what the second rotating arm is By rotating, the second radio frequency transmission lines electrically connected between the standard antenna unit and the signal analyzer will not be twisted.

Based on the foregoing, the present invention can indeed solve the problem of wire twisting during measurement in the prior art, thereby improving the stability of the first radio frequency transmission lines and the second radio frequency transmission lines.

2: Device to be tested

21: Antenna to be tested

3: Measuring arm unit

31: fixed seat

32: The first rotating arm

33: The second rotating arm

331: Through hole

4: mirror

5: Standard antenna unit

6: Signal generator

7, 7’: The first radio frequency transmission line

71: Third RF transmission line

8: Signal analyzer

9: Carrying base

10: Second RF transmission line

11: Rotation base

12: The first RF transmission line

13: Measuring arm unit

131: fixed arm

132: Rotating arm

14: Dual polarization standard antenna

15: Second RF transmission line

16: network analyzer

17: The first switch module

18: The second switch module

19: Waveguide

Figure 1 is a schematic diagram of a prior art antenna field measurement system.

FIG. 2 is a schematic diagram of the first preferred embodiment of the antenna radiation measurement system for improving the stability of radio frequency signals according to the present invention.

FIG. 3 is a partial schematic diagram of the second preferred embodiment of the present invention, illustrating an implementation manner in which the first radio frequency transmission line passes through the through hole and is electrically connected between the signal generator and the standard antenna unit.

FIG. 4 is a schematic diagram of the third preferred embodiment of the antenna radiation measurement system for improving the stability of radio frequency signals according to the present invention.

FIG. 5 is a partial schematic diagram of the fourth preferred embodiment of the present invention, illustrating an implementation manner in which the third radio frequency transmission line passes through the through hole and is electrically connected between the signal generator and the standard antenna unit.

Figure 6 is a partial schematic diagram of a fifth preferred embodiment of the present invention, illustrating the fifth Compared with the fourth preferred embodiment, the preferred embodiment further includes a waveguide.

Figure 7 is a schematic diagram of a sixth preferred embodiment of the present invention.

Figure 8 is a partial schematic view of the seventh preferred embodiment of the present invention.

Figure 9 is a schematic diagram of an eighth preferred embodiment of the present invention.

Figure 10 is a partial schematic diagram of a ninth preferred embodiment of the present invention.

Refer to FIG. 2, which is a first preferred embodiment of an antenna radiation measurement system for improving the stability of radio frequency signals of the present invention, which includes a measurement arm unit 3, a reflector 4, a standard antenna unit 5, and a signal generator 6. A plurality of first radio frequency transmission lines 7, a signal analyzer 8, a carrying base 9 and a plurality of second radio frequency transmission lines 10.

In this preferred embodiment, the standard antenna unit 5 emits electromagnetic signals toward the reflector 4, and the test antenna 21 correspondingly receives the electromagnetic signals reflected by the reflector 4.

The measuring arm unit 3 includes a fixing base 31, a first rotating arm 32 and a second rotating arm 33.

The fixing seat 31 is fixedly arranged on a bottom plate (not shown in the figure). The first rotating arm 32 is connected to the fixing base 31, and the first rotating arm 32 has a function of rotating around an axis direction Z relative to the fixing base 31. The second rotating arm 33 is connected to the first rotating arm 32, the second rotating arm 33 has a function of rotating relative to the first rotating arm 32, and the second rotating arm 33 rotates around an axis direction X, The axis direction X and the axis direction Z are perpendicular to each other. The standard antenna unit 5 is disposed on the second rotating arm 33. In this preferred embodiment, the standard antenna unit 5 is a dual-polarized standard antenna, and includes a horizontally polarized port and a vertical polarized port.

The signal generator 6 is arranged on the second rotating arm 33, and the second rotating arm 33 It is shielded between the standard antenna unit 5 and the signal generator 6. In the preferred embodiment, the signal generator 6 is an RF analog signal generator (Signal Generator, SG) including two output ports. The number of the first radio frequency transmission lines 7 is two, one of the first radio frequency transmission lines 7 is electrically connected between one of the output ports of the signal generator 6 and the horizontal polarization port of the standard antenna unit 5, and the other A radio frequency transmission line 7 is electrically connected between the other output port of the signal generator 6 and the vertical polarization port of the standard antenna unit 5.

The carrying base 9 remains fixed during measurement, and includes a platform on which a device under test 2 is placed, and the device under test 2 includes a plurality of antennas 21 under test. The second radio frequency transmission lines 10 are electrically connected between the waiting antenna 21 and the signal analyzer 8 respectively. For example, the number of antennas 21 to be tested is 4, the number of receiving ports (ports) of the signal analyzer 8 (Signal Analyzer, SA) is also 4, and the number of the second radio frequency transmission lines 10 is 4, the signal analysis The meter 8 can switch to receive the signal from the waiting antenna 21 from any one or any of the four receiving ports.

The first preferred operation steps are illustrated as follows:

Step (1), the position of the first rotating arm 32 of the measuring arm unit 3 is reset, at this time the horizontal angle ψ=0° corresponding to the first rotating arm 32, the position of the second rotating arm 33 is reset, this At this time, the vertical angle θ corresponding to the second rotating arm 33 = 0°.

Step (2). The first rotating arm 32 of the measuring arm unit 3 rotates 5° around the axis direction Z and then stands still. At this time, the horizontal angle ψ=5° corresponding to the first rotating arm 32 is The rotating arm 33 rotates around the axis direction X, and the measurement is stopped every 5°. In this step, the vertical angle θ corresponding to the second rotating arm 33 is θ=0°, 5°, 10°, 15°, 20°, 25°... 165°, 170°, 175°, 180°.

Step (3), the first rotating arm 32 of the measuring arm unit 3 is around the axis direction Z After another rotation of 5°, the horizontal angle ψ=10° corresponds to the first rotating arm 32. The second rotating arm 33 rotates around the axial direction X, and the measurement is stopped every 5°. In this step, the first The vertical angle θ corresponding to the two rotating arms 33 is 180°, 175°, 170°, 165°...25°, 20°, 15°, 10°, 5°, 0°.

Step (4): The first rotating arm 32 of the measuring arm unit 3 rotates 5° around the axis direction Z and then stands still. At this time, the horizontal angle ψ=15° corresponding to the first rotating arm 32 is The second rotating arm 33 rotates around the axis direction X as in step (2), and the measurement is stopped every 5°. In this step, the vertical angle θ corresponding to the second rotating arm 33 = 0°, 5°, 10°, 15°, 20°, 25°...165°, 170°, 175°, 180°.

Step (5): Repeat the measurement of the hemispherical radiation field pattern with ψ=0°~360° and θ=0°~180° according to the instructions in the previous steps (1)~(4).

Referring to FIG. 3, FIG. 3 is a partial schematic diagram of a second preferred embodiment of the present invention. The second preferred embodiment is similar to the first preferred embodiment, but the difference lies in: the second preferred embodiment of the second preferred embodiment The rotating arm 33 further includes a through hole 331, and each first radio frequency transmission line 7 extends through the through hole 331 and is electrically connected between the signal generator 6 and the standard antenna unit 5.

Referring to FIG. 4, FIG. 4 is a third preferred embodiment of the present invention. The third preferred embodiment is similar to the first preferred embodiment, but the difference lies in: the signal generator 6 of the third preferred embodiment With only a single output port, the signal analyzer 8 also has only a single receiving port. The antenna radiation measurement system for improving the stability of the radio frequency signal further includes a first switch module 17 and a second switch module 18.

The antenna radiation measurement system for improving the stability of the radio frequency signal further includes a first switch module 17 and a second switch module 18. The first switch module 17 is electrically connected between the signal generator 6 and each first radio frequency transmission line 7, and the first switch module 17 is controlled to determine the signal The generator 6 and each first radio frequency transmission line 7 are electrically conductive or non-conductive. The second switch module 18 is electrically connected between the signal analyzer 8 and each second radio frequency transmission line 10. The second switch module 18 is controlled to determine the relationship between the signal analyzer 8 and each second radio frequency transmission line 10. Electrically conductive or non-conductive.

For example, if the first switch module 17 determines that one of the first radio frequency transmission lines 7 is connected to the signal generator 6, and the other first radio frequency transmission line 7'is not connected to the signal generator 6, then the standard antenna unit 5 What is radiated is a vertically polarized electromagnetic wave signal. On the contrary, the first switch module 17 determines that the first radio frequency transmission line 7 and the signal generator 6 are not connected, and the other first radio frequency transmission line 7'is connected to the signal generator 6 6 is turned on, the standard antenna unit 5 radiates a horizontally polarized electromagnetic wave signal. Through the switching of the first switch module 17, the signal generator 6 of a single output port can also be used to perform dual-polarization field measurement on the antenna under test 21 in this preferred embodiment. Approximately, the second switch module 18 can select any one of the four second radio frequency transmission lines 10 or a combination of any number of them to be connected to the signal analyzer 8, which is equivalent to any of the four antennas 21 to be tested. Select one or more combinations to receive electromagnetic signals, and then achieve the effect of measuring beam forming.

Referring to FIG. 5, FIG. 5 is a partial schematic diagram of a fourth preferred embodiment of the present invention. The fourth preferred embodiment is similar to the third preferred embodiment, but the difference lies in: the second preferred embodiment of the fourth preferred embodiment The rotating arm 33 further includes a through hole 331 and a third radio frequency transmission line 71. The third radio frequency transmission line 71 passes through the through hole 331 and is electrically connected between the signal generator 6 and the first switch module 17.

Referring to FIG. 6, FIG. 6 is a partial schematic diagram of the fifth preferred embodiment of the present invention. The fifth preferred embodiment is similar to the fourth preferred embodiment, but the difference lies in: the fifth preferred embodiment It further includes a wave guide 19 which is disposed in the through hole 331 and is electrically connected between the first switch module 17 and the signal generator 6.

Referring to FIG. 7, FIG. 7 is a sixth preferred embodiment of the present invention. The sixth preferred embodiment is similar to the first preferred embodiment, but the difference lies in the position of the signal generator 6 and the signal analyzer 8 Therefore, the test antenna 21 is used to transmit electromagnetic wave signals, and the standard antenna unit 5 is used to receive electromagnetic wave signals; the first radio frequency transmission lines 7 are electrically connected to the test antenna 21 and the signal generator 6 respectively. Between the signal transmitting ports; the second RF transmission lines 10 are electrically connected between the standard antenna unit 5 and the signal receiving ports of the signal analyzer 8.

Referring to FIG. 8, FIG. 8 is a partial schematic diagram of the seventh preferred embodiment of the present invention. The seventh preferred embodiment is similar to the sixth preferred embodiment, except that the second rotating arm 33 is shielded from the A through hole 331 is included between the standard antenna unit 5 and the signal analyzer 8, and each second radio frequency transmission line 10 passes through the through hole 331 and is electrically connected between the signal analyzer 8 and the standard antenna unit 5.

Referring to FIG. 9, FIG. 9 is an eighth preferred embodiment of the present invention. The eighth preferred embodiment is similar to the sixth preferred embodiment. The difference is that the eighth preferred embodiment further includes a first switch Module 17 and a second switch module 18. The first switch module 17 is electrically connected between the signal generator 6 and each first radio frequency transmission line 7. The first switch module 17 is controlled to determine the difference between the signal generator 6 and each first radio frequency transmission line 7. Electrically conductive or non-conductive. The second switch module 18 is electrically connected between the signal analyzer 8 and each second radio frequency transmission line 10. The second switch module 18 is controlled to determine the relationship between the signal analyzer 8 and each second radio frequency transmission line 10. Electrically conductive or non-conductive.

Refer to Figure 10, which is a partial schematic diagram of a ninth preferred embodiment of the present invention In the figure, the ninth preferred embodiment is similar to the eighth preferred embodiment. The difference is that: the ninth preferred embodiment further includes a waveguide 13, and the second rotating arm 33 further includes a through hole 331, the The waveguide 13 is disposed in the through hole 331 and electrically connected between the second switch module 18 and the signal analyzer 8.

The effects of the present invention are:

(1) Referring to Fig. 2, when the standard antenna unit 5 transmits a signal and the antenna under test 21 receives the signal correspondingly, the signal generator 6 and the standard antenna unit 5 are co-located on the second rotating arm 33, so The first radio frequency transmission lines 7 electrically connected between the signal generator 6 and the standard antenna unit 5 will not be twisted; and the carrier base 9 is fixed, and the signal analyzer 8 is also fixed Do not move, so the second radio frequency transmission lines 10 electrically connected between the waiting antenna 21 (the device under test 2 provided on the supporting base 9) and the signal analyzer 8 will not be twisted to .

(2) Referring to Fig. 7, when the antenna under test 21 transmits a signal and the standard antenna unit 5 receives the signal correspondingly, the carrier base 9 is fixed and the signal generator 6 is also fixed, so when measuring The first radio frequency transmission lines 7 electrically connected between the waiting antenna 21 (the device under test 2 provided on the carrying base 9) and the signal generator 6 will not be twisted; and the standard antenna The unit 5 and the signal analyzer 8 are co-located on the second rotating arm 33, so no matter how the second rotating arm 33 rotates, they are electrically connected to the standard antenna unit 5 and the signal analyzer 8 The second radio frequency transmission line 10 will not be twisted either.

Based on the foregoing, the present invention can indeed solve the problem of wire twisting during measurement in the prior art, thereby improving the stability of the first radio frequency transmission lines and the second radio frequency transmission lines.

However, the above are only examples of the present invention, and should not be limited to this To determine the scope of implementation of the present invention, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification are still within the scope of the patent of the present invention.

2: Device to be tested

21: Antenna to be tested

3: Measuring arm unit

31: fixed seat

32: The first rotating arm

33: The second rotating arm

4: mirror

5: Standard antenna unit

6: Signal generator

7: The first RF transmission line

8: Signal analyzer

9: Carrying base

10: Second RF transmission line

Claims (10)

An antenna radiation measurement system for improving the stability of radio frequency signals, comprising: a measurement arm unit, including a fixing base, a first rotating arm and a second rotating arm, the fixing base is fixedly arranged on a bottom plate, the second A rotating arm is connected to the fixing base, and the first rotating arm has the function of rotating around an axis direction Z relative to the fixing base, the second rotating arm is connected to the first rotating arm, and the second rotating arm It has the function of rotating relative to the first rotating arm, and the second rotating arm rotates around an axis direction X, and the axis direction X and the axis direction Z are perpendicular to each other; a standard antenna unit is arranged on the second rotating arm; A signal generator is arranged on the second rotating arm; a plurality of first radio frequency transmission lines, each first radio frequency transmission line is electrically connected between the signal generator and the standard antenna unit; a signal analyzer; one fixed The carrier base includes a platform on which a device to be tested is placed, the device to be tested includes a plurality of antennas to be tested; and a plurality of second radio frequency transmission lines, and each second radio frequency transmission line is electrically Connected between one of the antennas to be tested and the signal analyzer. The antenna radiation measurement system for improving the stability of radio frequency signals according to item 1 of the scope of patent application includes: A first switch module and a wave guide. The first switch module is electrically connected between the signal generator and each first radio frequency transmission line. The first switch module is controlled to determine the signal generator and each The first radio frequency transmission line is electrically conductive or non-conductive, the second rotating arm is shielded between the standard antenna unit and the signal generator and includes a through hole, and the waveguide is disposed in the through hole and electrically connected to the Between the first switch module and the signal generator. According to item 2 of the scope of patent application, the antenna radiation measurement system for improving the stability of the radio frequency signal further includes: a second switch module electrically connected between the signal analyzer and each second radio frequency transmission line, the second The switch module is controlled to determine electrical conduction or non-conduction between the signal analyzer and each second radio frequency transmission line. The antenna radiation measurement system for improving the stability of radio frequency signals according to the first patent application, wherein the second rotating arm is shielded between the standard antenna unit and the signal generator and includes a through hole, and each first radio frequency transmission line Passing through the through hole and electrically connected between the signal generator and the standard antenna unit. The antenna radiation measurement system for improving the stability of radio frequency signals according to the first patent application, wherein the number of the first radio frequency transmission lines is two, the standard antenna unit is a dual-polarization standard antenna, and the dual-polarization standard The antenna includes a horizontal polarization port and a vertical polarization port, and the horizontal polarization port and the vertical polarization port are respectively electrically connected to two first radio frequency transmission lines. An antenna radiation measurement system for improving the stability of radio frequency signals, including: a signal generator, including a plurality of signal transmitting ports; a fixed bearing base, the bearing base includes a platform, the platform is used to place a The device to be tested includes a plurality of antennas to be tested; a plurality of first radio frequency transmission lines are respectively electrically connected between the antenna to be tested and the signal transmitting ports of the signal generator; and a measuring arm unit, It includes a fixing seat, a first rotating arm and a second rotating arm, the fixing seat is fixedly arranged on a bottom plate, the first rotating arm is connected with the fixing seat, and the first rotating arm is opposite to the fixing seat The function of rotating around an axis direction Z, the second rotating arm is connected with the first rotating arm, the second rotating arm has the function of rotating relative to the first rotating arm, and the second rotating arm is rotating around a The axis direction X rotates, the axis direction X and the axis direction Z are perpendicular to each other; a standard antenna unit is arranged on the second rotating arm; a signal analyzer is arranged on the second rotating arm and includes a plurality of signal receiving ports; And a plurality of second radio frequency transmission lines are electrically connected between the standard antenna unit and the signal receiving ports of the signal analyzer. The antenna radiation measurement system for improving the stability of RF signals according to item 6 of the scope of patent application includes: A first switch module is electrically connected between the signal generator and each first radio frequency transmission line, and the first switch module is controlled to determine whether the signal generator and each first radio frequency transmission line are electrically conductive or not. Conduction; and a second switch module electrically connected between the signal analyzer and each second RF transmission line, the second switch module is controlled to determine the conductance between the signal analyzer and each second RF transmission line On or off. According to item 7 of the scope of patent application, the antenna radiation measurement system for improving the stability of radio frequency signals further includes: a waveguide, and the second rotating arm is shielded between the standard antenna unit and the signal analyzer and includes a through hole , The waveguide is arranged in the through hole and electrically connected between the second switch module and the signal analyzer. The antenna radiation measurement system for improving the stability of radio frequency signals according to item 6 of the scope of patent application, wherein the second rotating arm is shielded between the standard antenna unit and the signal analyzer and includes a through hole, and each second radio frequency transmission line The through hole extending through the second rotating arm is electrically connected between the signal analyzer and the standard antenna unit. According to the antenna radiation measurement system for improving the stability of radio frequency signal according to item 6 of the scope of patent application, the number of the second radio frequency transmission lines is two, the standard antenna unit is a dual polarization standard antenna, and the dual polarization standard The antenna includes a horizontal polarization port and a vertical polarization port, and the horizontal polarization port and the vertical polarization port are respectively electrically connected to the second radio frequency transmission lines.

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