Radio frequency filter chip test experiment device and use method thereof

Abstract

The invention discloses a radio frequency filter chip test experiment device and a use method thereof. The radio frequency filter chip test experiment device comprises an antenna assembly and test equipment, the antenna assembly is connected with a first C-frequency-band receiving signal line, a second C-frequency-band receiving signal line, a first C-frequency-band transmitting signal line, a second C-frequency-band transmitting signal line, an X-frequency-band receiving signal line, an X-frequency-band transmitting signal line, a Ku-frequency-band receiving signal line and a Ku-frequency-band transmitting signal line. According to the radio frequency filter chip test experiment device and the use method thereof, the single-pole eight-throw mechanical coaxial switch is adopted, the mechanical coaxial switch is controlled through the control circuit board, rapid switching of test channels is achieved, the single-pole eight-throw mechanical coaxial switch adopts a high-precision ceramic contact structure, and the test efficiency is improved. The single-pole eight-throw mechanical coaxial switch has the characteristics of low insertion loss and high isolation, and the control circuit board is integrated with a microcontroller and a driving circuit module, so that accurate control of the single-pole eight-throw mechanical coaxial switch can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent teaching of communication antennas, and in particular to a radio frequency filter chip testing experimental device and a use method thereof. Background Art

[0002] The RF filter chip test experimental device is a supporting device for the intelligent teaching of communication antennas. The satellite communication antenna intelligent teaching system consists of antennas, LNBs (low noise downconverters), inertial navigation, GPS antennas, beacon receivers and other equipment. The antenna uses a high-precision reflective surface, a full turntable mount, and a high-precision integrated motor module drive, which can achieve stable reception of Ku-band satellite signals. In wireless communication systems, antennas are key components for signal transmission and reception, and their performance is directly related to the communication quality of the system. In order to ensure that the performance indicators of the antenna meet the design requirements, it is necessary to conduct strict tests on its various performance indicators during the research and development and production of the antenna. With the continuous development of science and technology, people's requirements for RF filter chip test experimental devices are getting higher and higher.

[0003] The existing RF filter chip test experimental device has certain drawbacks when in use. First, the existing RF filter chip test experimental device cannot perform signal communication very conveniently when in use, and the signal transmission processing effect is poor, which is not conducive to people's use. In addition, the existing RF filter chip test experimental device cannot perform function switching very conveniently when in use, and the structure is relatively simple, which brings certain adverse effects to people's use process. Traditional antenna test systems usually use manual switching to perform multi-channel testing, which is not only inefficient, but also easy to introduce human errors. In addition, with the development of wireless communication technology, the demand for multi-band and multi-mode testing of antennas is increasing. The existing test switching device can no longer meet the requirements of modern antenna test systems. For this reason, we propose a RF filter chip test experimental device and its use method. Summary of the invention

[0004] Technical problem to be solved: In view of the shortcomings of the prior art, the present invention provides a radio frequency filter chip test experimental device and a method of using the same. A single-pole eight-throw mechanical coaxial switch is adopted. The mechanical coaxial switch is controlled by a control circuit board to achieve rapid switching of test channels. The single-pole eight-throw mechanical coaxial switch adopts a high-precision ceramic contact structure and has the characteristics of low insertion loss and high isolation. The control circuit board is integrated with a microcontroller and a drive circuit module, which can achieve precise control of the single-pole eight-throw mechanical coaxial switch, and can effectively solve the problems in the background technology.

[0005] Technical solution: To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a radio frequency filter chip test experimental device, including an antenna assembly and a test device, the antenna assembly is connected with a first C-band receiving signal line, a second C-band receiving signal line, a first C-band transmitting signal line, a second C-band transmitting signal line, an X-band receiving signal line, an X-band transmitting signal line, a Ku-band receiving signal line and a Ku-band transmitting signal line, the first C-band receiving signal line, the second C-band receiving signal line, the first C-band transmitting signal line, the second C-band transmitting signal line, the X-band receiving signal line, the X-band transmitting signal line, the Ku-band receiving signal line and the Ku-band transmitting signal line are all connected with a coaxial switch switching unit, the coaxial switch switching unit is connected with the test device, the test device is also connected with a single-pole eight-throw coaxial switch, the single-pole eight-throw coaxial switch is connected with a control circuit board and an eight-way radio frequency input assembly, and the control circuit board is connected with a button and a display screen.

[0006] As a preferred technical solution of the present application, the antenna assembly is also connected to a low-noise amplifier and a network feed, the low-noise amplifier is connected to a power divider, the power divider is connected to a beacon receiver and a radio frequency output port, the network feed is connected to a high-frequency head, the high-frequency head is connected to a receiver, the receiver is connected to a host computer, the host computer is connected to an azimuth axis angle sensor, a pitch axis angle sensor, a cross-axis angle sensor and a safety protection device, and the azimuth axis angle sensor, the pitch axis angle sensor, the cross-axis angle sensor and the safety protection device are all connected to a tester.

[0007] As a preferred technical solution of the present application, the antenna assembly includes an antenna dish, a feed assembly, a receiver body, a cross motor, a control box, an antenna base, a power supply, a helical antenna, an azimuth motor and a pitch motor. The power supply is installed at the bottom of the antenna base, the control box is installed on the side of the antenna base, the pitch motor and the cross motor adjust the angle of the receiver body, and the antenna dish and the feed assembly are positioned on the receiver body.

[0008] As a preferred technical solution of the present application, the test equipment is internally provided with a LOGO indicator light circuit, a function switching circuit, a high-frequency signal input and output processing detection circuit, a power supply interface and its indicator light circuit, an internal power supply circuit, a radio frequency amplifier circuit, a power supply filter circuit, a filter main loop circuit and a controller interface circuit.

[0009] A method for using a radio frequency filter chip test experimental device specifically includes the following steps:

[0010] S1: Multi-band antenna channel switching: Modern communication systems need to support multiple frequency bands, such as C\X\KU bands. By switching RF channels of different frequency bands, a single RF front end can support multiple frequency bands.

[0011] S2: Multi-antenna system switching: In the communication system, the main antenna or redundant antenna is selected according to the signal strength, and the signal reception quality is optimized by switching between multiple antennas quickly;

[0012] S3: Test and measurement system: Antenna performance testing requires frequent switching of the connection between the antenna under test and the test instrument. Automatic switching of the test path improves test efficiency and reduces manual intervention.

[0013] S4: Redundancy backup and fault switching: Critical communication systems require high reliability. When the main antenna fails, it is necessary to quickly switch to the backup antenna and seamlessly switch between the main and backup antennas or RF links to ensure continuous operation of the system.

[0014] S5: Phased array antenna system: Phased array antenna achieves beam scanning by adjusting the phase of each array element, but some scenarios require physical switching of different sub-arrays and switching of signal paths between sub-arrays to adapt to different scanning modes or coverage ranges.

[0015] As a preferred technical solution of the present application, an antenna feed extension is set in the steps S1-S5. The antenna feed extension is composed of a main reflector, a sub-reflector, a feed source network and a feeder line, and the main function of the antenna feed extension is to transmit the received satellite downlink signal to the back-end signal processing equipment.

[0016] As a preferred technical solution of the present application, an antenna structure extension is set in the steps S1-S5. The antenna structure extension is mainly an antenna mount, and its main function is to support the antenna feed network. In addition, it can complete predetermined azimuth, pitch and cross movements under the control of a servo control device.

[0017] As a preferred technical solution of the present application, the antenna structure extension is provided with a servo control tracking extension, and the servo control tracking extension is mainly composed of an antenna control unit, a beacon receiver, a drive motor, an axis encoder, a power distribution and a safety protection unit, and the main function of the servo control tracking extension is to achieve precise pointing of the antenna by driving and controlling the antenna to meet the need for precise tracking of the target.

[0018] Beneficial effects: Compared with the prior art, the present invention provides a radio frequency filter chip test experimental device and a method of using the same, which have the following beneficial effects: The radio frequency filter chip test experimental device and the method of using the same adopt a single-pole eight-throw mechanical coaxial switch, and the mechanical coaxial switch is controlled by a control circuit board to achieve rapid switching of test channels. The single-pole eight-throw mechanical coaxial switch adopts a high-precision ceramic contact structure, and has the characteristics of low insertion loss and high isolation. The control circuit board is integrated with a microcontroller and a drive circuit module, which can achieve precise control of the single-pole eight-throw mechanical coaxial switch. The entire radio frequency filter chip test experimental device has a simple structure, is easy to operate, and has better use effect than the traditional method. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a schematic diagram of the overall structure of a radio frequency filter chip testing experimental device and a method for using the same.

[0020] Figure 2 The present invention provides a schematic structural diagram of a single-pole eight-throw coaxial switch in a radio frequency filter chip testing experimental device and a method for using the same.

[0021] Figure 3 The present invention is a schematic diagram of the structure of a power divider in a radio frequency filter chip testing experimental device and a method for using the same.

[0022] Figure 4 The present invention provides a schematic structural diagram of a network feed source in a radio frequency filter chip testing experimental device and a method for using the same.

[0023] Figure 5 The present invention is a schematic structural diagram of an antenna assembly in a radio frequency filter chip testing experimental device and a method for using the same.

[0024] Figure 6 The present invention is a circuit diagram of a radio frequency filter chip testing experimental device and a method for using the same.

[0025] In the figure: 1. Antenna assembly; 2. First C-band receiving signal line; 3. Second C-band receiving signal line; 4. First C-band transmitting signal line; 5. Second C-band transmitting signal line; 6. X-band receiving signal line; 7. X-band transmitting signal line; 8. Ku-band receiving signal line; 9. Ku-band transmitting signal line; 10. Coaxial switch switching unit; 11. Test equipment; 12. Button; 13. Control circuit board; 14. Display screen; 15. Single-pole eight-throw coaxial switch; 16. Eight-way RF input assembly; 17. Low-noise amplifier 1. Device; 2. Power divider; 3. Beacon receiver; 4. RF output port; 5. Network feed; 6. High-frequency head; 7. Receiver; 8. Host computer; 9. Pitch axis angle sensor; 10. Azimuth axis angle sensor; 11. Cross axis angle sensor; 12. Safety protection device; 13. Tester; 14. Antenna dish; 15. Feed assembly; 16. Receiver body; 17. Cross motor; 18. Control box; 19. Antenna base; 20. Power supply; 21. Helical antenna; 22. Azimuth motor; 23. Pitch motor. DETAILED DESCRIPTION

[0026] The technical scheme of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments, but it will be understood by those skilled in the art that the following described embodiments are part of embodiments of the present invention, rather than all embodiments, and are only used to illustrate the present invention, and should not be considered as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention. If specific conditions are not specified in the embodiments, they are carried out according to normal conditions or conditions recommended by the manufacturer. If the manufacturer is not specified in the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figure 1-6 As shown, a radio frequency filter chip test experimental device includes an antenna component 1 and a test device 11, the antenna component 1 is connected with a first C-band receiving signal line 2, a second C-band receiving signal line 3, a first C-band transmitting signal line 4, a second C-band transmitting signal line 5, an X-band receiving signal line 6, an X-band transmitting signal line 7, a Ku-band receiving signal line 8 and a Ku-band transmitting signal line 9, and the first C-band receiving signal line 2, the second C-band receiving signal line 3, the first C-band transmitting signal line 4, the second C-band transmitting signal line 5, the X-band receiving signal line 6, the X-band transmitting signal line 7, the Ku-band receiving signal line 8 and the Ku-band transmitting signal line 9 are all connected with a coaxial switch. The coaxial switch switching unit 10 is connected to the test equipment 11, and the test equipment 11 is also connected to the single-pole eight-throw coaxial switch 15. The single-pole eight-throw coaxial switch 15 is connected to the control circuit board 13 and the eight-way RF input component 16. The control circuit board 13 is connected to the button 12 and the display screen 14. A single-pole eight-throw mechanical coaxial switch is adopted. The mechanical coaxial switch is controlled by the control circuit board to realize fast switching of the test channel. The single-pole eight-throw mechanical coaxial switch adopts a high-precision ceramic contact structure, which has the characteristics of low insertion loss and high isolation. The control circuit board integrates a microcontroller and a drive circuit module, which can realize precise control of the single-pole eight-throw mechanical coaxial switch.

[0030] Furthermore, the antenna assembly 1 is also connected to a low noise amplifier 17 and a network feed source 21, the low noise amplifier 17 is connected to a power divider 18, the power divider 18 is connected to a beacon receiver 19 and a radio frequency output port 20, the network feed source 21 is connected to a high frequency head 22, the high frequency head 22 is connected to a receiver 23, the receiver 23 is connected to a host computer 24, the host computer 24 is connected to an azimuth axis angle sensor 26, a pitch axis angle sensor 25, a cross axis angle sensor 27 and a safety protection device 28, and the azimuth axis angle sensor 26, the pitch axis angle sensor 25, the cross axis angle sensor 27 and the safety protection device 28 are all connected to a tester 29.

[0031] Furthermore, the antenna assembly 1 includes an antenna dish 30, a feed assembly 31, a receiver body 32, a cross motor 33, a control box 34, an antenna base 35, a power supply 36, a helical antenna 37, an azimuth motor 38 and a pitch motor 39. The power supply 36 is installed at the bottom of the antenna base 35, the control box 34 is installed on the side of the antenna base 35, the pitch motor 39 and the cross motor 33 adjust the angle of the receiver body 32, and the antenna dish 30 and the feed assembly 31 are positioned on the receiver body 32.

[0032] Furthermore, the test equipment 11 is internally provided with a LOGO indicator light circuit, a function switching circuit, a high-frequency signal input and output processing detection circuit, a power supply interface and its indicator light circuit, an internal power supply circuit, a radio frequency amplifier circuit, a power supply filter circuit, a filter main loop circuit and a controller interface circuit.

[0033] A method for using a radio frequency filter chip test experimental device specifically includes the following steps:

[0034] S1: Multi-band antenna channel switching: Modern communication systems need to support multiple frequency bands, such as C\X\KU bands. By switching RF channels of different frequency bands, a single RF front end can support multiple frequency bands.

[0035] S2: Multi-antenna system switching: In the communication system, the main antenna or redundant antenna is selected according to the signal strength, and the signal reception quality is optimized by switching between multiple antennas quickly;

[0036] S3: Test and measurement system: Antenna performance testing requires frequent switching of the connection between the antenna under test and the test instrument. Automatic switching of the test path improves test efficiency and reduces manual intervention.

[0037] S4: Redundancy backup and fault switching: Critical communication systems require high reliability. When the main antenna fails, it is necessary to quickly switch to the backup antenna and seamlessly switch between the main and backup antennas or RF links to ensure continuous operation of the system.

[0038] S5: Phased array antenna system: Phased array antenna achieves beam scanning by adjusting the phase of each array element, but some scenarios require physical switching of different sub-arrays and switching of signal paths between sub-arrays to adapt to different scanning modes or coverage ranges.

[0039] Furthermore, an antenna feed extension is set in steps S1-S5. The antenna feed extension consists of a main reflector, a sub-reflector, a feed source network and a feeder line. The main function of the antenna feed extension is to transmit the received satellite downlink signal to the back-end signal processing equipment.

[0040] Furthermore, an antenna structure extension is set in steps S1-S5. The antenna structure extension is mainly an antenna mount, and its main function is to support the antenna feed network. In addition, it can complete predetermined azimuth, pitch, and cross movements under the control of a servo control device.

[0041] Furthermore, the antenna structure extension is provided with a servo control tracking extension, which is mainly composed of an antenna control unit, a beacon receiver, a drive motor, an axis encoder, a power distribution and a safety protection unit. The main function of the servo control tracking extension is to achieve precise pointing of the antenna by driving and controlling the antenna to meet the need for precise tracking of the target.

[0042] The antenna transceiver test switching switch unit can realize fast channel switching. Compared with traditional methods such as manual cable switching, it can complete channel switching within milliseconds, which can greatly save test time, significantly improve work efficiency, and greatly reduce the workload of manual switching of test channels, reducing labor costs and the cost of test errors and repeated work caused by human operational errors.

[0043] The antenna transceiver test switching switch unit has the characteristics of low insertion loss, which can maintain the transmission quality and stability of the signal, so that the test signal has less energy loss when switching channels through the switch, ensuring the accuracy of the test results. The antenna transceiver test switching switch unit also has high isolation, which can effectively prevent crosstalk and interference between signals in different channels, and avoid mutual influence of signals in adjacent channels, thereby improving the reliability of test data. In multi-channel RF testing, high isolation can ensure that the signals of each channel are transmitted independently without interfering with each other, so that the test results can more truly reflect the actual situation of each channel.

[0044] Switching test principle

[0045] Connect 8 RF cables to be tested to the 8 RF input ports of the coaxial switching switch unit respectively, and connect the common port of the coaxial switch unit to the input port of the test instrument (such as network analyzer, spectrum analyzer, etc.) through the RF cable. The coaxial switch unit is electrically controlled, and the main control circuit board controls the signal through the TTL level to achieve rapid switching of the RF channel.

[0046] When switching test channels, the RF channels can be switched manually or remotely. By rotating the potentiometer knob outside the chassis, the test channels can be switched manually. At the same time, the OLED screen of the coaxial switching unit displays the current corresponding test channel, allowing you to intuitively observe the current test channel.

[0047] Working principle: The present invention includes an antenna assembly 1, a first C-band receiving signal line 2, a second C-band receiving signal line 3, a first C-band transmitting signal line 4, a second C-band transmitting signal line 5, an X-band receiving signal line 6, an X-band transmitting signal line 7, a Ku-band receiving signal line 8, a Ku-band transmitting signal line 9, a coaxial switch switching unit 10, a test device 11, a button 12, a control circuit board 13, a display screen 14, a single-pole eight-throw coaxial switch 15, an eight-way RF input assembly 16, a low-noise amplifier 17, a power divider 18, a beacon receiver 19, and a RF output port 20. Network feed 21. High-frequency head 22. Receiver 23. Host computer 24. Pitch axis angle sensor 25. Azimuth axis angle sensor 26. Cross axis angle sensor 27. Safety protection device 28. Tester 29. Antenna dish 30. Feed assembly 31. Receiver body 32. Cross motor 33. Control box 34. Antenna base 35. Power supply 36. Helical antenna 37. Azimuth motor 38 and pitch motor 39. Multi-band antenna channel switching: Modern communication systems need to support multiple frequency bands, such as C\X\KU bands. By switching RF channels of different frequency bands, a single radio can be realized. The frequency front end supports multiple frequency bands; multi-antenna system switching: in the communication system, the main antenna or redundant antenna is selected according to the signal strength, and the signal reception quality is optimized by switching between multiple antennas quickly; test and measurement system: the antenna performance test requires frequent switching of the connection between the antenna under test and the test instrument, and the test path is automatically switched to improve the test efficiency and reduce manual intervention; redundant backup and fault switching: key communication systems require high reliability. When the main antenna fails, it is necessary to quickly switch to the backup antenna, and seamlessly switch between the main and backup antennas or RF links to ensure the continuous operation of the system; phased array antenna system: the phased array antenna realizes beam scanning by adjusting the phase of each array element, but some scenarios require physical switching of different sub-arrays, switching signal paths between sub-arrays, adapting to different scanning modes or coverage ranges, and using a single-pole eight-throw mechanical coaxial switch. The mechanical coaxial switch is controlled by the control circuit board to realize fast switching of the test channel. The single-pole eight-throw mechanical coaxial switch adopts a high-precision ceramic contact structure, which has the characteristics of low insertion loss and high isolation. The control circuit board integrates a microcontroller and a drive circuit module, which can realize precise control of the single-pole eight-throw mechanical coaxial switch.

[0048] It should be noted that, in this article, relational terms such as first and second (number one, number two), etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0049] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A radio frequency filter chip test experimental device, comprising an antenna assembly (1) and a test device (11), characterized in that: The antenna assembly (1) is connected to a first C-band receiving signal line (2), a second C-band receiving signal line (3), a first C-band transmitting signal line (4), a second C-band transmitting signal line (5), an X-band receiving signal line (6), an X-band transmitting signal line (7), a Ku-band receiving signal line (8) and a Ku-band transmitting signal line (9); the first C-band receiving signal line (2), the second C-band receiving signal line (3), the first C-band transmitting signal line (4), the second C-band transmitting signal line (5), the X-band receiving signal line (6), the X-band transmitting signal line (7), the Ku-band receiving signal line (8) and the Ku-band transmitting signal line (9); The signal line (6), the X-band transmission signal line (7), the Ku-band reception signal line (8) and the Ku-band transmission signal line (9) are all connected to a coaxial switch switching unit (10); the coaxial switch switching unit (10) is connected to a test device (11); the test device (11) is also connected to a single-pole eight-throw coaxial switch (15); the single-pole eight-throw coaxial switch (15) is connected to a control circuit board (13) and an eight-way radio frequency input component (16); the control circuit board (13) is connected to a button (12) and a display screen (14).

2. The RF filter chip test experimental device according to claim 1, characterized in that: The antenna assembly (1) is also connected to a low noise amplifier (17) and a network feed (21); the low noise amplifier (17) is connected to a power divider (18); the power divider (18) is connected to a beacon receiver (19) and a radio frequency output port (20); the network feed (21) is connected to a high frequency head (22); the high frequency head (22) is connected to a receiver (23); the receiver (23) is connected to a host computer (24); the host computer (24) is connected to an azimuth axis angle sensor (26), a pitch axis angle sensor (25), a cross axis angle sensor (27) and a safety protection device (28); the azimuth axis angle sensor (26), the pitch axis angle sensor (25), the cross axis angle sensor (27) and the safety protection device (28) are all connected to a tester (29).

3. The RF filter chip test experimental device according to claim 1, characterized in that: The antenna assembly (1) comprises an antenna dish (30), a feed assembly (31), a receiver body (32), a cross motor (33), a control box (34), an antenna base (35), a power supply (36), a helical antenna (37), an azimuth motor (38) and a pitch motor (39), wherein the power supply (36) is installed at the bottom of the antenna base (35), the control box (34) is installed at the side of the antenna base (35), the pitch motor (39) and the cross motor (33) are used to adjust the angle of the receiver body (32), and the antenna dish (30) and the feed assembly (31) are positioned on the receiver body (32).

4. The RF filter chip test experimental device according to claim 1, characterized in that: The test device (11) is internally provided with a LOGO indicator light circuit, a function switching circuit, a high-frequency signal input and output processing detection circuit, a power supply interface and its indicator light circuit, an internal power supply circuit, a radio frequency amplifier circuit, a power supply filter circuit, a filter main loop circuit and a controller interface circuit.

5. A method for using a radio frequency filter chip test experimental device, characterized in that: The specific steps include the following: S1: Multi-band antenna channel switching: Modern communication systems need to support multiple frequency bands, such as C\X\KU bands. By switching RF channels of different frequency bands, a single RF front end can support multiple frequency bands. S2: Multi-antenna system switching: In the communication system, the main antenna or redundant antenna is selected according to the signal strength, and the signal reception quality is optimized by switching between multiple antennas quickly; S3: Test and measurement system: Antenna performance testing requires frequent switching of the connection between the antenna under test and the test instrument. Automatic switching of the test path improves test efficiency and reduces manual intervention. S4: Redundancy backup and fault switching: Critical communication systems require high reliability. When the main antenna fails, it is necessary to quickly switch to the backup antenna and seamlessly switch between the main and backup antennas or RF links to ensure continuous operation of the system. S5: Phased array antenna system: Phased array antenna achieves beam scanning by adjusting the phase of each array element, but some scenarios require physical switching of different sub-arrays and switching of signal paths between sub-arrays to adapt to different scanning modes or coverage ranges.

6. The method for using the radio frequency filter chip test experimental device according to claim 5, characterized in that: In the steps S1-S5, an antenna feed extension is set up, and the antenna feed extension consists of a main reflector, a sub-reflector, a feed source network and a feeder line. The main function of the antenna feed extension is to transmit the received satellite downlink signal to the back-end signal processing equipment.

7. The method for using the radio frequency filter chip test experimental device according to claim 5, characterized in that: In the steps S1-S5, an antenna structure extension is set up. The antenna structure extension is mainly an antenna mount, and its main function is to support the antenna feed network. In addition, it can complete predetermined azimuth, pitch, and cross movements under the control of a servo control device.

8. The method for using the radio frequency filter chip testing experimental device according to claim 5, characterized in that: The antenna structure extension is provided with a servo control tracking extension, which is mainly composed of an antenna control unit, a beacon receiver, a drive motor, an axis encoder, a power distribution and a safety protection unit. The main function of the servo control tracking extension is to achieve precise pointing of the antenna by driving and controlling the antenna to meet the need for precise tracking of the target.

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