A detection system and detection method for encapsulated antennas

Abstract

This invention discloses a testing system and method for packaged antennas, relating to the field of antenna technology. It solves the problem that existing probe station and socket testing methods are unsuitable for testing the electrical and radio frequency (RF) performance of AOP-packaged antennas with integrated antennas. The key technical points are: By using an electrically connected DC power supply, a vector network analyzer, a host computer, and a receiving antenna connected to the vector network analyzer, low-cost electrical and RF performance testing of AOP-packaged antennas with integrated antennas is achieved. The host computer controls the testing process, achieving high efficiency, high stability, and consistency. A "golden module" is used for calibration, ensuring the accuracy of screening tests. The calibration data of the AOP-packaged antennas is stored, allowing calibration of phased array antennas composed of several AOP-packaged antennas to be performed on a per-AOP-packaged-antenna basis, improving the calibration efficiency of phased array antennas.

Description

Technical Field

[0001] This invention relates to the field of antenna technology, and more specifically, to a testing system and method for packaged antennas. Background Technology

[0002] Antenna-on-Package (AoP) technology integrates antennas into a package carrying a chip using packaging materials and processes, balancing antenna performance, cost, and size. It is widely used in 5G communications, automotive radar, terahertz sensors, and wireless link chips.

[0003] The RF performance of AOP-packaged antennas is affected by the chip, antenna, and packaging process. Furthermore, when a large number of AOP-packaged antennas are arrayed, the RF performance of each individual antenna will impact the overall performance of the antenna array. Therefore, before integrating multiple AOP-packaged antennas, it is necessary to test the yield of each individual antenna. Existing probe station and socket testing solutions are suitable for power supply control testing or RF performance testing of chip pins, but they are not applicable to the electrical and RF performance testing of AOP-packaged antennas with integrated antennas. Summary of the Invention

[0004] The purpose of this invention is to provide a testing system and method for packaged antennas, so as to perform electrical and radio frequency performance tests on AOP packaged antennas with integrated antennas.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] A detection system for packaged antennas, comprising:

[0007] A DC power supply is used to power the detection system for the packaged antenna;

[0008] A vector network analyzer is used to connect to the input terminal of the package under test (TB) antenna and transmit radio frequency signals to the TB antenna.

[0009] The receiving antenna is used to connect to the output terminal of the antenna under test (UTP) to receive the radio frequency (RF) signal radiated by the UTP antenna.

[0010] The receiving antenna is connected to the vector network analyzer and is used to send the received radio frequency signal to the vector network analyzer.

[0011] The host computer is used to send power-on commands, and the DC power supply responds to the power-on commands to power on the antenna packaged under test.

[0012] The host computer is electrically connected to the antenna under test and the vector network analyzer, and is used to generate a first instruction when the current on the antenna under test is detected to meet the first threshold current.

[0013] The vector network analyzer sends a radio frequency signal in response to the first command;

[0014] When the host computer detects that the calibration data after the antenna under test receives the radio frequency signal meets the preset calibration data, it generates a second instruction.

[0015] After responding to the second command, the packaged antenna under test radiates radio frequency signals to the receiving antenna.

[0016] When the host computer detects that the operating current of the antenna under test radiating radio frequency signals meets the second threshold current, and the S-parameters of the vector network analyzer when receiving radio frequency signals meet the preset S-parameters, it stores the calibration data and operating current.

[0017] Furthermore, it also includes a housing; the inner wall of the housing is provided with a wave-absorbing material layer; one end of the housing is provided with the receiving antenna; the other end of the housing is used to provide the antenna to be tested.

[0018] Furthermore, it also includes a multi-channel RF chip; the common terminal of the multi-channel RF chip is connected to the output terminal of the vector network analyzer; the output terminal of the multi-channel RF chip is used to connect to the input terminals of several antennas under test respectively; and is used to transmit the RF signals emitted by the vector network analyzer to the antennas under test respectively.

[0019] Furthermore, it also includes a power divider and an amplifier; the input terminal of the power divider is connected to the output terminal of the vector network analyzer; the output terminals of the power divider are all connected to amplifiers; the output terminals of the amplifiers are all connected to the antenna under test; used to divide the radio frequency signal emitted by the vector network analyzer into multiple radio frequency signals, and then transmit them to the antenna under test via amplifiers.

[0020] A detection method for packaged antennas, based on the aforementioned detection system for packaged antennas, includes the following steps:

[0021] S1. Initialize the detection system for the packaged antenna, and acquire the first threshold current, preset calibration data, second threshold current, and preset S-parameters;

[0022] S2. Initialize the antenna under test and power it on via DC power supply controlled by the host computer;

[0023] S3. Obtain and detect whether the power-on current of the antenna under test meets the first threshold current; if it does, proceed to step S4.

[0024] S4. Use the host computer to control the vector network analyzer to send radio frequency signals to the antenna packaged under test;

[0025] S5. Acquire and detect whether the calibration data of the antenna under test after receiving the radio frequency signal meets the preset calibration data; if it does, proceed to step S6.

[0026] S6. The radio frequency signal radiated by the antenna under test package is sent to the vector network analyzer via the receiving antenna;

[0027] S7. Acquire and detect whether the S-parameters of the vector network analyzer after receiving the radio frequency signal meet the preset S-parameters, and whether the operating current of the packaged antenna under test radiating the radio frequency signal to the receiving antenna meets the second threshold current; if both the S-parameters and the operating current are met, then store the calibration data and operating current of the packaged antenna under test.

[0028] Furthermore, the process of initializing the detection system for the packaged antenna is as follows:

[0029] The gold module was tested using the aforementioned encapsulated antenna detection system;

[0030] The power-on current of the gold module during the test is the first threshold current, the calibration data is the preset calibration data, and the operating current is the second threshold current.

[0031] The S-parameters of the vector network analyzer obtained during the test are preset S-parameters.

[0032] Furthermore, when the deviation between the power-on current of the packaged antenna under test and the first threshold current is less than 10%, the power-on current of the packaged antenna under test satisfies the first threshold current.

[0033] When the deviation between the calibration data of the packaged antenna under test after receiving the radio frequency signal and the preset calibration data is less than 10%, the calibration data of the packaged antenna under test after receiving the radio frequency signal meets the preset calibration data.

[0034] When the deviation between the operating current of the packaged antenna under test radiating radio frequency signals to the receiving antenna and the second threshold current is less than 10%, the operating current of the packaged antenna under test radiating radio frequency signals to the receiving antenna satisfies the second threshold current.

[0035] When the deviation between the S-parameters of the vector network analyzer after receiving the RF signal and the preset S-parameters is less than 2dB, the S-parameters of the vector network analyzer after receiving the RF signal meet the preset S-parameters.

[0036] Furthermore, the calibration data includes an amplitude matrix and a phase matrix.

[0037] Furthermore, the process of acquiring calibration data after the packaged antenna under test receives radio frequency signals is as follows:

[0038] Collect the amplitude and phase of each channel of the antenna under test when the phase is at 0° and 180°;

[0039] Based on the amplitude and phase of each channel when the phase is at 0° and 180°, calculate the true phase and true amplitude of each channel;

[0040] The Phase-Toggle algorithm is used to decouple the true phase and true amplitude of each channel to obtain the amplitude matrix and phase matrix of the packaged antenna under test.

[0041] Furthermore, before step S6, the following steps are also included:

[0042] The phase matrix of the packaged antenna under test is calculated to obtain the packaged antenna under test with true phase equalization for each channel.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] ① By using an electrically connected DC power supply, a vector network analyzer, a host computer, and a receiving antenna connected to the vector network analyzer, the goal is to perform low-cost electrical and radio frequency performance testing on an AOP packaged antenna with integrated antenna.

[0045] ②The detection system for this packaged antenna uses a host computer to control the electrical and radio frequency performance testing process of the AOP packaged antenna, which has the advantages of high efficiency, high stability and high consistency.

[0046] ③ The test method for this packaged antenna uses a "golden module" to calibrate the test system, ensuring the accuracy of the screening test.

[0047] ④ After completing the screening of AOP packaged antennas, the detection method of this packaged antenna saves the calibration data of AOP packaged antennas. This makes the calibration of phased array antennas composed of several AOP packaged antennas possible on a unit basis, which greatly improves the calibration efficiency of phased array antennas. Attached Figure Description

[0048] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0049] Figure 1 This is a schematic diagram of a detection system for an encapsulated antenna in one embodiment;

[0050] Figure 2 This is a schematic diagram of a detection method for an encapsulated antenna in one embodiment;

[0051] Figure 3 This is a schematic diagram of a multi-channel radio frequency chip structure for a detection system for an encapsulated antenna in one embodiment;

[0052] Figure 4This is a schematic diagram of the structure of a detection system for an encapsulated antenna, including a power divider and an amplifier, as shown in the embodiment. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0054] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to that other component.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] Example: A testing system and method for packaged antennas.

[0057] A detection system for packaged antennas, such as Figure 1 The system includes: a DC power supply for powering the detection system for the packaged antenna; a vector network analyzer for connecting to the input terminal of the packaged antenna under test (UTP) and transmitting radio frequency (RF) signals to it; a receiving antenna for connecting to the output terminal of the UTP and receiving the RF signals radiated by the UTP; the receiving antenna is signal-connected to the vector network analyzer and transmits the received RF signals to the analyzer; a host computer for sending a power-on command, and the DC power supply responds to the power-on command by powering on the UTP; the host computer is electrically connected to the UTP and the vector network analyzer for... When the current supplied to the antenna under test (TBT) meets the first threshold current, a first instruction is generated; in response to the first instruction, the vector network analyzer sends an RF signal; when the host computer detects that the calibration data after the TBT receives the RF signal meets the preset calibration data, a second instruction is generated; in response to the second instruction, the TBT radiates an RF signal to the receiving antenna; when the host computer detects that the operating current of the TBT radiating the RF signal meets the second threshold current, and the S-parameters of the vector network analyzer when receiving the RF signal meet the preset S-parameters, the calibration data and the operating current are stored.

[0058] An optional implementation of this embodiment: The above-mentioned detection system for packaged antennas further includes a housing; the inner wall of the housing is provided with a wave-absorbing material layer; the receiving antenna is provided at one end of the housing; and the other end of the housing is used to provide the packaged antenna to be tested.

[0059] The specific implementation process is as follows: Build as follows Figure 1 The diagram shows a testing system for packaged antennas, in which VNA is a vector network analyzer, a small dark box is the enclosure, and an AoP test board AoP packaged antenna is used to provide RF input signals to the AoP packaged antenna and to test parameters such as the gain and phase of the link.

[0060] When the AoP (Aspect-Oriented Network) antenna testing system is working, the radio frequency (RF) signal output from port P1 of the vector network analyzer is transmitted to the AoP antenna via a waveguide system. The AoP antenna amplifies the signal and radiates it outwards. The radiated RF signal is received by the receiving antenna at the top of the enclosure and then transmitted back to port P2 of the vector network analyzer via the waveguide system. A DC power supply provides the necessary power to the AoP antenna. The host computer can send control commands and data to the AoP antenna and read the S-parameters of the vector network analyzer. The enclosure is a metal enclosure with absorbing material lined its inner walls to reduce the impact of reflected and noise signals on the accuracy of the test results. Once the test platform is set up, testing can begin.

[0061] One optional implementation of this embodiment: such as Figure 3 As shown, the above-mentioned testing system for packaged antennas also includes a multi-channel RF chip; the common terminal of the multi-channel RF chip is connected to the output terminal of the vector network analyzer; the output terminal of the multi-channel RF chip is used to connect to the input terminals of several packaged antennas under test respectively; it is used to transmit the RF signals emitted by the vector network analyzer to the packaged antennas under test respectively. When screening AoP packaged antennas, four AoP packaged antennas can be tested at once. A four-channel RF chip is cascaded at the front end of the four AoP packaged antennas. This four-channel RF chip functions as a power divider, switch, and amplifier. The control module (host computer) and the power supply module (DC power supply) respectively control and supply power to the four-channel RF chip and the AoP packaged antennas. The RF signal from port P1 of the vector network analyzer is input to the common terminal of the four-channel RF chip. After being divided and amplified by the four-channel RF chip, it is output to the four AoP packaged antennas, which then radiate the electromagnetic wave signals. The radiated electromagnetic wave signals are received by the receiving antenna located at the top of the enclosure and then transmitted to port P2 of the vector network analyzer. Furthermore, the 4-channel chip can be replaced with an N-channel RF chip, at which point N AoP packaged antennas can be tested at once during screening tests.

[0062] One optional implementation of this embodiment: such as Figure 4As shown, the above-mentioned testing system for packaged antennas also includes a power divider and an amplifier. The input terminal of the power divider is connected to the output terminal of the vector network analyzer. Each output terminal of the power divider is connected to an amplifier. Each output terminal of the amplifier is connected to the packaged antenna under test. This system is used to split the radio frequency signal emitted by the vector network analyzer into multiple radio frequency signals, which are then transmitted to the packaged antenna under test via amplifiers. Four AoP packaged antennas can be tested simultaneously during screening tests. An amplifier is cascaded at the front end of each AoP packaged antenna. The control module (host computer) and power supply module (DC power supply) control and supply power to the amplifiers and AoP packaged antennas, respectively. The radio frequency signal from port P1 of the vector network analyzer is input to the common terminal of the four power dividers. After being split by the four power dividers, the signal is output to the amplifier, amplified, and then output to the four AoP packaged antennas. The AoP packaged antennas then radiate the electromagnetic wave signals, which are received by the receiving antenna located at the top of the enclosure and then transmitted to port P2 of the vector network analyzer. Furthermore, the 4-way power divider can be replaced with an N-way power divider, at which point N AoP packaged antennas can be tested at once during screening tests.

[0063] This embodiment also provides a detection method for packaged antennas, which performs packaged antenna detection based on the aforementioned detection system for packaged antennas, such as... Figure 2 As shown, the process includes the following steps: S1. Initialize the detection system for the packaged antenna, and acquire the first threshold current, preset calibration data, second threshold current, and preset S-parameters; S2. Initialize the packaged antenna under test, and power on the packaged antenna under test via a DC power supply controlled by the host computer; S3. Acquire and detect whether the power-on current of the packaged antenna under test meets the first threshold current; if it does, proceed to step S4; S4. Use the host computer to control the vector network analyzer to send an RF signal to the packaged antenna under test; S5. Acquire and detect whether the calibration data of the packaged antenna under test after receiving the RF signal meets the preset calibration data; if it does, proceed to step S6; S6. The RF signal radiated by the packaged antenna under test is sent to the vector network analyzer via the receiving antenna; S7. Acquire and detect whether the S-parameters of the vector network analyzer after receiving the RF signal meet the preset S-parameters, and whether the operating current of the packaged antenna under test when radiating the RF signal to the receiving antenna meets the second threshold current; if both the S-parameters and the operating current are met, store the calibration data and operating current of the packaged antenna under test.

[0064] An optional implementation of this embodiment: The process of initializing the detection system for the packaged antenna specifically involves: testing the gold module using the detection system for the packaged antenna; obtaining the power-on current of the gold module during the test as the first threshold current, the calibration data as preset calibration data, and the operating current as the second threshold current; and obtaining the S-parameters of the vector network analyzer during the test as preset S-parameters.

[0065] In one optional implementation of this embodiment: when the deviation between the power-on current of the packaged antenna under test and the first threshold current is less than 10%, the power-on current of the packaged antenna under test meets the first threshold current; when the deviation between the calibration data of the packaged antenna under test after receiving the radio frequency signal and the preset calibration data is less than 10%, the calibration data of the packaged antenna under test after receiving the radio frequency signal meets the preset calibration data; when the deviation between the operating current of the packaged antenna under test radiating the radio frequency signal to the receiving antenna and the second threshold current is less than 10%, the operating current of the packaged antenna under test radiating the radio frequency signal to the receiving antenna meets the second threshold current; when the deviation between the S-parameters of the vector network analyzer after receiving the radio frequency signal and the preset S-parameters is less than 2dB, the S-parameters of the vector network analyzer after receiving the radio frequency signal meet the preset S-parameters.

[0066] An optional implementation of this embodiment: the calibration data includes an amplitude matrix and a phase matrix.

[0067] An optional implementation of this embodiment: The process of acquiring calibration data after the packaged antenna under test receives radio frequency signals is specifically as follows: acquiring the amplitude and phase of each channel of the packaged antenna under test when the phase is at 0° and 180°; calculating the true phase and true amplitude of each channel based on the amplitude and phase of each channel when the phase is at 0° and 180°; and decoupling the true phase and true amplitude of each channel using the Phase-Toggle algorithm to obtain the amplitude matrix and phase matrix of the packaged antenna under test.

[0068] An optional implementation of this embodiment: Before step S6, the method further includes: performing phase matrix calculation on the packaged antenna under test to obtain the packaged antenna under test with true phase equalization for each channel.

[0069] A testing method for packaged antennas, the testing process is as follows: Figure 2 As shown, the specific steps are as follows: The packaged antenna is calibrated using a testing system with a "gold module," which is an AoP packaged antenna whose RF performance has been thoroughly tested. During calibration, the... Figure 1The AoP packaged antenna was replaced with a "gold module". The S21 parameter of the "gold module" was tested and recorded as the preset S-parameter P. Simultaneously, the initial power-on current I' of the "gold module" after configuration was recorded as the first threshold current, the current I" during operation as the second threshold current, and the amplitude matrix Am and phase matrix Ph as preset calibration data. During the AoP packaged antenna screening test, its RF performance can be referenced to the RF performance of the "gold module" to determine its RF performance qualification. The AoP packaged antenna was powered by a DC power supply via the host computer. The AoP packaged antenna was configured to operate in a defined and controllable state. After configuration, the current I0 of the AoP packaged antenna was recorded and compared with I' to determine if I0 was normal. The deviation between I' and I0 should be within 0.1*I'. If the current I0 is within the range, it is considered normal. If the current I0 is normal, continue testing; if the current I0 is abnormal, terminate the screening test; when the current I0 is normal, set the operating frequency; and calibrate the amplitude and phase of the AoP packaged antenna channel. The purpose of this process is mainly to enable the radiation pattern of a single AoP packaged antenna to be synthesized, and to acquire the amplitude matrix Am0 and phase matrix Ph0 of a single AoP packaged antenna. Due to the influence of various factors in the link, the true amplitude and phase of the channel will be interfered with. When acquiring the amplitude and phase of the channel, it is necessary to eliminate the influence of other factors in the link on the true amplitude and phase of the channel. This process is called decoupling. The Phase-Toggle algorithm is used for decoupling. By controlling the phase of each channel at 0° and 180°, the amplitude r0 and phase θ0 of the channel are extracted at 0°, and the amplitude r0 is extracted at 180°. 180 and phase θ 180 The true amplitude and phase of the channel are calculated using the following formulas:

[0070]

[0071]

[0072] in A represents the true phase of the channel after decoupling, and A represents the true amplitude of the channel after decoupling. After decoupling using the Phase-Toggle algorithm, the amplitude matrix Am0 and phase matrix Ph0 of a single AoP packaged antenna can be acquired.

[0073] The calibration data of the AoP packaged antenna is judged. If the deviation between the amplitude matrix Am0 and Am is less than 0.1*Am, and the deviation between the phase matrix Ph0 and Ph is less than 0.1*Ph, the calibration data is normal. Otherwise, the calibration data is abnormal, and the screening test is terminated.

[0074] If the calibration data is normal, the calculation proceeds. The calculation process involves sending instructions from the host computer to the AoP-packaged antenna, ensuring that the phases of all channels of the AoP-packaged antenna are equal after calculation. During calculation, the phase compensation matrix Ph is calculated using the obtained phase matrix Ph0, and Ph0 and Ph satisfy Ph0 + Ph = 0. The calculated phase compensation matrix Ph is then sent to the AoP-packaged antenna via the host computer and written into it. This ensures that the phases of each channel of the AoP-packaged antenna are equal after calculation, allowing the antenna's radiation pattern to be synthesized.

[0075] After the calculation is completed, the AoP packaged antenna is powered on. After being powered on, the AoP packaged antenna works in the transmitting state and can radiate electromagnetic waves. These electromagnetic waves are received by the receiving antenna at the top of the enclosure and then transmitted back to port P2 of the vector network analyzer. At this time, the host computer reads the S21 parameter of the vector network analyzer and records it as P0.

[0076] The host computer reads the operating current value I1 of the DC power supply to the AoP packaged antenna;

[0077] Compare P0 and P, I” and I1 respectively to determine if the S21 parameters and current value I1 are normal. If the deviation between I” and I1 is within 0.1*I”, it is normal; if the deviation between P0 and P is within ±2dB, it is normal. If normal, save the amplitude matrix Am0 and phase matrix Ph0 of a single AoP packaged antenna and the current value I1; complete the screening test.

[0078] Therefore, the detection system and method for packaged antennas provided in this embodiment have the following advantages:

[0079] ① By using an electrically connected DC power supply, a vector network analyzer, a host computer, and a receiving antenna connected to the vector network analyzer, the goal is to perform low-cost electrical and radio frequency performance testing on an AOP packaged antenna with integrated antenna.

[0080] ②The detection system for this packaged antenna uses a host computer to control the electrical and radio frequency performance testing process of the AOP packaged antenna, which has the advantages of high efficiency, high stability and high consistency.

[0081] ③ The test method for this packaged antenna uses a "golden module" to calibrate the test system, ensuring the accuracy of the screening test.

[0082] ④ After completing the screening of AOP packaged antennas, the detection method of this packaged antenna saves the calibration data of AOP packaged antennas. This makes the calibration of phased array antennas composed of several AOP packaged antennas possible on a unit basis, which greatly improves the calibration efficiency of phased array antennas.

[0083] ⑤ If the number of channels of the AOP packaged antenna is N, the signal-to-noise ratio of the calibration signal can be improved by 20*lg(N) during calibration.

[0084] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A detection system for packaged antennas, characterized in that, include: A DC power supply is used to power the detection system for the packaged antenna; A vector network analyzer is used to connect to the input terminal of the package under test (TB) antenna and transmit radio frequency signals to the TB antenna. The receiving antenna is used to connect to the output terminal of the antenna under test (UTP) to receive the radio frequency (RF) signal radiated by the UTP antenna. The receiving antenna is connected to the vector network analyzer and is used to send the received radio frequency signal to the vector network analyzer. The host computer is used to send power-on commands, and the DC power supply responds to the power-on commands to power on the antenna packaged under test. The host computer is electrically connected to the antenna under test and the vector network analyzer, and is used to generate a first instruction when the current on the antenna under test is detected to meet the first threshold current. The vector network analyzer sends a radio frequency signal in response to the first command; When the host computer detects that the calibration data after the antenna under test receives the radio frequency signal meets the preset calibration data, it generates a second instruction. After responding to the second command, the packaged antenna under test radiates radio frequency signals to the receiving antenna. When the host computer detects that the operating current of the antenna under test radiating radio frequency signals meets the second threshold current, and the S-parameters of the vector network analyzer when receiving radio frequency signals meet the preset S-parameters, it stores the calibration data and operating current.

2. The detection system for packaged antennas according to claim 1, characterized in that: It also includes the enclosure; The inner wall of the box is provided with a wave-absorbing material layer; The receiving antenna is provided at one end of the housing; The other end of the enclosure is used to mount the antenna to be tested.

3. The detection system for packaged antennas according to claim 2, characterized in that: It also includes multi-channel radio frequency chips; The common terminal of the multi-channel RF chip is connected to the output terminal of the vector network analyzer; The output terminal of the multi-channel RF chip is used to connect to the input terminals of several antennas under test, respectively. Used to transmit the radio frequency signals emitted by the vector network analyzer to the antenna of the package under test.

4. The detection system for packaged antennas according to claim 2, characterized in that: It also includes power dividers and amplifiers; The input terminal of the power divider is connected to the output terminal of the vector network analyzer; Each power divider's output terminal is connected to an amplifier; The output terminals of the amplifiers are all connected to the antenna of the package under test. This is used to split the radio frequency signal emitted by the vector network analyzer into multiple radio frequency signals, which are then amplified and transmitted to the antenna under test.

5. A detection method for packaged antennas, characterized in that, Testing a packaged antenna using a testing system according to any one of claims 1-4 includes the following steps: S1. Initialize the detection system for the packaged antenna, and acquire the first threshold current, preset calibration data, second threshold current and preset S-parameters; S2. Initialize the antenna under test and power it on via DC power supply controlled by the host computer; S3. Obtain and detect whether the power-on current of the antenna under test meets the first threshold current; if it does, proceed to step S4. S4. Use the host computer to control the vector network analyzer to send radio frequency signals to the antenna packaged under test; S5. Acquire and detect whether the calibration data of the antenna under test after receiving the radio frequency signal meets the preset calibration data; if it does, proceed to step S6. S6. The radio frequency signal radiated by the antenna under test package is sent to the vector network analyzer via the receiving antenna; S7. Acquire and detect whether the S-parameters of the vector network analyzer after receiving the radio frequency signal meet the preset S-parameters, and whether the operating current of the packaged antenna under test radiating the radio frequency signal to the receiving antenna meets the second threshold current; if both the S-parameters and the operating current are met, store the calibration data and operating current of the packaged antenna under test. The calibration data includes an amplitude matrix and a phase matrix; The specific process for obtaining calibration data after the packaged antenna under test receives radio frequency signals is as follows: Collect the amplitude and phase of each channel of the antenna under test when the phase is at 0° and 180°; Based on the amplitude and phase of each channel when the phase is at 0° and 180°, calculate the true phase and true amplitude of each channel; The Phase-Toggle algorithm is used to decouple the true phase and true amplitude of each channel to obtain the amplitude matrix and phase matrix of the packaged antenna under test. Before step S6, the following are also included: The phase matrix of the packaged antenna under test is calculated to obtain the packaged antenna under test with true phase equalization for each channel.

6. The detection method for packaged antennas according to claim 5, characterized in that, The specific process of initializing the detection system for the packaged antenna is as follows: The gold module was tested using the aforementioned encapsulated antenna detection system; The power-on current of the gold module during the test is the first threshold current, the calibration data is the preset calibration data, and the operating current is the second threshold current. The S-parameters of the vector network analyzer obtained during the test are preset S-parameters.

7. The detection method for packaged antennas according to claim 5, characterized in that: When the deviation between the power-on current of the packaged antenna under test and the first threshold current is less than 10%, the power-on current of the packaged antenna under test satisfies the first threshold current. When the deviation between the calibration data of the packaged antenna under test after receiving the radio frequency signal and the preset calibration data is less than 10%, the calibration data of the packaged antenna under test after receiving the radio frequency signal meets the preset calibration data. When the deviation between the operating current of the packaged antenna under test radiating radio frequency signals to the receiving antenna and the second threshold current is less than 10%, the operating current of the packaged antenna under test radiating radio frequency signals to the receiving antenna satisfies the second threshold current. When the deviation between the S-parameters of the vector network analyzer after receiving the RF signal and the preset S-parameters is less than 2dB, the S-parameters of the vector network analyzer after receiving the RF signal meet the preset S-parameters.

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