CN110568270A - Electrical performance test system for 75GHz-110GHz frequency antenna housing - Google Patents
Electrical performance test system for 75GHz-110GHz frequency antenna housing Download PDFInfo
- Publication number
- CN110568270A CN110568270A CN201910660760.8A CN201910660760A CN110568270A CN 110568270 A CN110568270 A CN 110568270A CN 201910660760 A CN201910660760 A CN 201910660760A CN 110568270 A CN110568270 A CN 110568270A
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- 75ghz
- electrical performance
- frequency
- 110ghz
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/10—Radiation diagrams of antennas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
- G01S7/4008—Means for monitoring or calibrating of parts of a radar system of transmitters
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention belongs to the technical field of microwave radio frequency and test measurement, and particularly relates to a system for testing the electrical performance of a radome with a frequency of 75GHz-110 GHz. The radome is the electromagnetic window of a mechanically scanned antenna and must meet electrical performance requirements. The capability of testing the radome with the 110GHz frequency band is not met at present. The invention provides a system for testing the electrical performance of a 75GHz-110GHz frequency antenna housing, which comprises a millimeter wave transmitting module, a millimeter wave receiving and analyzing module, a receiving rotary table module, a transmitting rotary table module and a main control computer. Based on a high-performance vector network analyzer, the problems of the electrical performance path loss and the low sensitivity of a 75GHz-110GHz antenna housing electrical performance test system and the problem of the trigger time sequence are mainly solved. The system can meet the test requirements on the electrical performance of the 75GHz-110GHz antenna housing, provide test data for the guarantee of models and scientific research projects, and guarantee the development of future weaponry.
Description
Technical Field
The invention belongs to the technical field of microwave radio frequency and test measurement, and particularly relates to a system for testing the electrical performance of a radome with a frequency of 75GHz-110 GHz.
Background
The millimeter wave radar has the unique advantages of overcoming the influence of atmospheric environments such as smoke, dust and the like, being capable of identifying targets from complex ground clutter, having strong night vision capability and the like, and is the main research direction of future armed helicopters and accurate guidance missiles. The 110GHz frequency band millimeter wave radar has shorter wavelength, reduces the size of elements in application, enables the system structure to be more compact and meets the requirements of aviation and aerospace. Meanwhile, the narrower beam width enables the target tracking, identifying and positioning to have higher resolution and precision, and the capability of resisting electronic interference, clutter interference and multipath reflection interference.
The antenna housing of the seeker is an electromagnetic window and a protective cover of the seeker antenna. The radome is the electromagnetic window of a mechanically scanned antenna and must meet electrical performance requirements. The capability of testing the radome with the 110GHz frequency band is not met at present.
Disclosure of Invention
The invention provides a 75GHz-110GHz frequency antenna housing electrical property testing system, which is based on a high-performance vector network analyzer and mainly solves the problems of electrical property path loss and low sensitivity of the 75GHz-110GHz antenna housing electrical property testing system and the problem of trigger timing sequence.
The invention relates to a system for testing the electrical performance of a 75GHz-110GHz frequency antenna housing, which comprises a millimeter wave transmitting module, a millimeter wave receiving and analyzing module, a receiving rotary table module, a transmitting rotary table module and a main control computer; the millimeter wave receiving and analyzing module comprises a switch matrix, a low-noise amplifying unit, an amplifying and frequency converting unit, a rotary joint, a millimeter wave frequency spreading device and a vector network analyzer which are sequentially connected in series; and the main control computer respectively performs command sending and/or signal transmission with the vector network analyzer, the receiving turntable module and the transmitting turntable module.
Further, the vector network analyzer adopts an external triggering mode.
Further, under the control of the trigger pulse, the vector network analyzer receives and measures the intermediate frequency signal from the millimeter wave frequency spreading device, amplifies and filters the intermediate frequency signal, performs secondary mixing and filtering, converts the intermediate frequency signal into a digital signal, and extracts the measured parameter.
Further, the main control computer transmits data through a switch, and the switch is provided with a LAN interface.
Furthermore, the millimeter wave transmitting module is used for generating and transmitting millimeter wave signals and comprises a signal source, a frequency doubling source, an amplifier and a transmitting antenna.
Further, the signal source provides an excitation signal for the whole test system.
Furthermore, the receiving rotary table module comprises a receiving rotary table and a receiving rotary table controller, and the antenna to be tested and the antenna housing are installed on the receiving rotary table.
Further, the receiving turntable controller rotates under the control of the main control computer and provides a pulse trigger output signal.
Furthermore, the transmitting rotary table module comprises a transmitting rotary table and a transmitting rotary table controller, and the transmitting antenna is installed on the transmitting rotary table.
Further, the transmitting rotary table can also test the vertical, horizontal and oblique polarization of the transmitting antenna.
Has the advantages that: the system can meet the test requirements on the electrical performance of the 75GHz-110GHz antenna housing, provide test data for the guarantee of models and scientific research projects, and guarantee the development of future weaponry.
Drawings
FIG. 1 is a schematic diagram of the principle of the test system according to the present invention.
Detailed Description
Referring to fig. 1, the system for testing 75GHz-110GHz electrical performance of the invention mainly comprises a millimeter wave transmitting module, a millimeter wave receiving and analyzing module, a receiving turntable module, a transmitting turntable module and a main control computer. Wherein:
1) Millimeter wave transmitting module
The device is used for generating and transmitting millimeter wave signals and mainly comprises a signal source, a frequency doubling source, an amplifier, a transmitting antenna and the like, wherein the signal source is used as a microwave signal transmitting source and provides an excitation signal for the whole test system. In order to compensate transmission loss caused by a transmission cable and transmission loss of electromagnetic waves in space, on one hand, a transmitting antenna with relatively large gain is selected, and on the other hand, the output power of a signal source is increased.
2) Millimeter wave receiving and analyzing module
The millimeter wave signal receiving and analyzing device is used for receiving and analyzing millimeter wave signals and mainly comprises a switch matrix, a low-noise amplification unit, an amplification frequency conversion unit, a rotary joint, a millimeter wave frequency spreading device, a vector network analyzer and other devices, wherein the vector network analyzer adopts an external trigger mode, and the specific working process is as follows: the receiving turntable controller in the receiving turntable module controls the receiving turntable to rotate, under the condition that the receiving turntable rotates to a position, the TRIG OUT connector of the receiving turntable controller sends OUT trigger pulses, under the control of the trigger pulses, the vector network analyzer receives and measures intermediate-frequency signals from the millimeter wave frequency spreading device, amplifies and filters the intermediate-frequency signals, then performs secondary mixing and filtering, extracts a real part and an imaginary part of the signals of the vector network analyzer, then respectively converts the signals into digital signals, and performs functions of digital signal processing, error correction, extraction of measured parameters, graphic display and the like.
3) Receiving turntable module
Including receiving revolving stage and receiving revolving stage controller, antenna and antenna house that awaits measuring are installed on receiving the revolving stage, can rotate along with one or more axle to measure the response signal of the antenna that awaits measuring on the equidirectional. The receiving turntable controller is connected with a main control computer through a LAN bus and is kept synchronous with the whole test system under the control of the main control computer. The receiving turntable controller is capable of providing a pulsed trigger output signal.
4) Transmitting rotary table module
The transmitting antenna is installed on the transmitting rotary table, and the transmitting rotary table can rotate the transmitting antenna to realize vertical, horizontal and oblique polarization tests of the transmitting antenna.
5) Main control computer
The main control computer is a control center and a data processing center of the whole test system. The LAN interface of the exchanger controls the devices such as a vector network analyzer, a turntable controller and the like, so that the data measurement system can work coordinately. Under the coordination of the main control computer, the system acquires data, the computer acquires and stores the measurement data, and the data processing module in the main control computer processes the extracted measurement parameters of the antenna to be measured to obtain each parameter of the antenna to be measured.
In one embodiment, the working principle of the 75GHz-110GHz antenna test system is as follows: the main control computer controls the millimeter wave transmitting module through the LAN bus, an excitation signal generated by the signal source is transmitted to the transmitting antenna, and the antenna to be tested transmits the received signal to the receiving module. The vector network analyzer provides corresponding local oscillation signals for the millimeter wave receiving and analyzing module and the millimeter wave transmitting module, the received signals are converted into intermediate frequency signals through the amplifying and frequency converting unit, the vector network analyzer processes the received intermediate frequency signals, the main control computer reads system test results through the LAN bus interface and performs system processing to obtain amplitude-phase information of the antenna to be tested, and then the test of antenna directional diagram characteristics can be realized through matching with antenna test auxiliary equipment such as a rotary table and the like.
Dynamic range calculation of 175 GHz-110GHz band system of meter
Claims (10)
1. The utility model provides a to 75GHz-110GHz frequency antenna house electrical performance test system which characterized in that: the system comprises a millimeter wave transmitting module, a millimeter wave receiving and analyzing module, a receiving rotary table module, a transmitting rotary table module and a main control computer; the millimeter wave receiving and analyzing module comprises a switch matrix, a low-noise amplifying unit, an amplifying and frequency converting unit, a rotary joint, a millimeter wave frequency spreading device and a vector network analyzer which are sequentially connected in series; and the main control computer respectively performs command sending and/or signal transmission with the vector network analyzer, the receiving turntable module and the transmitting turntable module.
2. The 75GHz-110GHz frequency radome electrical performance testing system of claim 1, wherein: the vector network analyzer adopts an external triggering mode.
3. The 75GHz-110GHz frequency radome electrical performance testing system of claim 2, wherein: under the control of the trigger pulse, the vector network analyzer receives and measures the intermediate frequency signal from the millimeter wave frequency spreading device, amplifies and filters the intermediate frequency signal, then performs secondary mixing and filtering, converts the intermediate frequency signal into a digital signal, and extracts the measured parameter.
4. The 75GHz-110GHz frequency radome electrical performance testing system of claim 1, wherein: the main control computer transmits data through the switch, and the switch is provided with a LAN interface.
5. The 75GHz-110GHz frequency radome electrical performance testing system of claim 1, wherein: the millimeter wave transmitting module is used for generating and transmitting millimeter wave signals and comprises a signal source, a frequency doubling source, an amplifier and a transmitting antenna.
6. The 75GHz-110GHz frequency radome electrical performance testing system of claim 5, wherein: the signal source provides an excitation signal for the whole test system.
7. the 75GHz-110GHz frequency radome electrical performance testing system of claim 1, wherein: the receiving rotary table module comprises a receiving rotary table and a receiving rotary table controller, and the antenna to be tested and the antenna housing are installed on the receiving rotary table.
8. The 75GHz-110GHz frequency radome electrical performance testing system of claim 7, wherein: the receiving turntable controller rotates under the control of the main control computer and provides a pulse trigger output signal.
9. The 75GHz-110GHz frequency radome electrical performance testing system of claim 1, wherein: the transmitting rotary table module comprises a transmitting rotary table and a transmitting rotary table controller, and the transmitting antenna is arranged on the transmitting rotary table.
10. The 75GHz-110GHz frequency radome electrical performance testing system of claim 9, wherein: the transmitting rotary table can also test the vertical, horizontal and oblique polarization of the transmitting antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910660760.8A CN110568270A (en) | 2019-07-22 | 2019-07-22 | Electrical performance test system for 75GHz-110GHz frequency antenna housing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910660760.8A CN110568270A (en) | 2019-07-22 | 2019-07-22 | Electrical performance test system for 75GHz-110GHz frequency antenna housing |
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| CN110568270A true CN110568270A (en) | 2019-12-13 |
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| CN201910660760.8A Pending CN110568270A (en) | 2019-07-22 | 2019-07-22 | Electrical performance test system for 75GHz-110GHz frequency antenna housing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112130006A (en) * | 2020-09-24 | 2020-12-25 | 北京邮电大学 | Antenna test method and system |
| CN112557798A (en) * | 2020-12-09 | 2021-03-26 | 航天特种材料及工艺技术研究所 | Phased array antenna-antenna housing electrical performance testing device and testing method |
| CN113777416A (en) * | 2021-09-13 | 2021-12-10 | 中电科思仪科技股份有限公司 | Compact millimeter wave test system and method for microchip antenna |
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| CN112557798A (en) * | 2020-12-09 | 2021-03-26 | 航天特种材料及工艺技术研究所 | Phased array antenna-antenna housing electrical performance testing device and testing method |
| CN112557798B (en) * | 2020-12-09 | 2023-08-01 | 航天特种材料及工艺技术研究所 | Phased array antenna-radome electrical performance testing device and testing method |
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Application publication date: 20191213 |