Ultra-low noise amplifier test tool

Abstract

The utility model belongs to the technical field of ultra-low noise amplifier testing, and particularly relates to an ultra-low noise amplifier testing tool which comprises a supporting table, a sliding groove is formed in a placing base, a clamping plate is installed on a sliding block, a stepping motor is installed on the outer wall of the placing base through a machine base, a lead screw is installed on an output shaft of the stepping motor, and a clamping plate is installed on the clamping plate. The first electrode plate and the second electrode plate are connected with an indicator lamp through an internal circuit, the indicator lamp is connected with a control panel through an internal circuit, generally, the two sets of sliding blocks drive the two sets of clamping plates to synchronously and relatively move, and the control panel can receive a second electric signal at the moment that the two clamping plates are attached to the ultra-low noise amplifier at the same time; and at the moment, the control panel can control the stepping motor to stop operating, namely, the clamping plate stops moving, so that accurate control over the clamping force is achieved, damage to the ultra-low noise amplifier caused by too large clamping force is avoided, and improvement of the protection performance of the ultra-low noise amplifier is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of ultra-low noise amplifier testing technology, specifically an ultra-low noise amplifier testing fixture. Background Technology

[0002] Ultra-low noise amplifiers are electronic devices that suppress their own and external noise as much as possible while amplifying signals. They are widely used in wireless communication, satellite communication, radar, wireless television and mobile phones. When testing the product quality and reliability of ultra-low noise amplifiers, test fixtures are required for inspection.

[0003] A Chinese patent with authorization announcement number CN 114814442 B discloses a low-noise amplifier testing system, including a controllable constant current power supply, a module access device, and a vector network analysis device. The module access device has an access slot, and the vector network analysis device is used to couple with the test subject within the access slot. The vector network analysis device includes an S-parameter testing module and a 1dB compression point testing module. The S-parameter testing module is used to derive the S-parameters of the test subject based on the test signal emitted by the test subject in the module access device, and the 1dB compression point testing module is used to derive the 1dB compression point of the test subject based on the test signal emitted by the test subject in the module access device. This application simplifies low-noise amplifier testing by using a vector network analyzer for detailed configuration of the low-noise amplifier, calibrating the low-noise amplifier test program, and using a constant current source for drive current supply, quickly determining the good or bad status of the low-noise amplifier, thus improving development and testing efficiency.

[0004] Existing test fixtures typically use clamps to hold and fix ultra-low noise amplifiers during testing. However, due to the inability to control the clamping force, excessive clamping force can easily damage the ultra-low noise amplifier, resulting in poor protection of the amplifier by the device. Therefore, a new ultra-low noise amplifier test fixture is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve the problems existing in the existing technology, this utility model proposes an ultra-low noise amplifier test fixture.

[0006] The technical solution adopted by this utility model to solve its technical problem is an ultra-low noise amplifier testing fixture, including a support platform, a control panel mounted on the support platform, a placement seat mounted on the support platform, a sliding groove opened in the placement seat, two sets of sliders symmetrically assembled in the sliding groove, a clamping plate mounted on the slider, an indicator light mounted on the top side of the clamping plate, a plate groove opened inside the clamping plate, a movable plate assembled in the plate groove, a limit groove opened inside the clamping plate, a limit block assembled in the limit groove, the limit block being fixedly connected to the movable plate, a first electrode plate mounted on the side wall of the limit block, a second electrode plate mounted on the inner wall of the limit groove, two sets of springs installed between the limit block and the inner wall of the limit groove, and a base mounted on the outer wall of the placement seat. Equipped with a stepper motor, the output shaft of which is mounted with a lead screw. The threads on the lead screw are symmetrically opposite in direction and are rotatably mounted on the inner wall of the slide groove. The first and second electrode plates are connected to an indicator light via an internal circuit. The indicator light is connected to a control panel via an internal circuit, and the control panel is connected to the stepper motor via an internal circuit. Typically, the two sets of sliders drive the two sets of clamping plates to move synchronously relative to each other. At the instant that the two clamping plates simultaneously come into contact with the ultra-low noise amplifier, the control panel receives a second electrical signal. At this time, the control panel controls the stepper motor to stop operating, i.e., the clamping plates stop moving. This achieves precise control of the clamping force, avoiding damage to the ultra-low noise amplifier due to excessive clamping force, and is beneficial to improving the protection of the ultra-low noise amplifier.

[0007] Preferably, an ultra-low noise amplifier is placed on the mounting base, and the ultra-low noise amplifier is equipped with a first connector and a second connector. A signal source is mounted on the support platform, and the signal source is equipped with a first display screen, an adjustment knob, and a first plug. A spectrum analyzer is mounted on the support platform, and the spectrum analyzer is equipped with a second display screen, an adjustment key, and a second plug. By adjusting the adjustment knob of the signal source, the signal generated by the signal source is changed. The ultra-low noise amplifier is used to amplify the electrical signal, and the spectrum analyzer measures the spectrum of the signal. By comparing the spectrum of the spectrum analyzer with the signal value of the signal source, the accuracy and precision of the ultra-low noise amplifier can be determined. This structure allows for a standardized testing process for the ultra-low noise amplifier, ensuring test consistency and improving test accuracy.

[0008] The advantages of this utility model are:

[0009] 1. In this utility model, two sets of sliders drive two sets of clamping plates to move synchronously relative to each other. At the instant when the two clamping plates simultaneously come into contact with the ultra-low noise amplifier, the control panel receives a second electrical signal. At this time, the control panel will control the stepper motor to stop operating, that is, the clamping plates stop moving. This achieves precise control of the clamping force, avoids damage to the ultra-low noise amplifier due to excessive clamping force, and helps to improve the protection of the ultra-low noise amplifier.

[0010] 2. By comparing the spectrum of the spectrum analyzer with the signal value of the signal source, this utility model can determine the accuracy and precision of the ultra-low noise amplifier. This structure can perform a standardized testing procedure for the ultra-low noise amplifier, ensuring the consistency of the test and improving the accuracy of the test. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a first-person perspective 3D structural diagram;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the mounting base;

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the clamping plate;

[0015] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the clamping plate;

[0016] Figure 5 This is a schematic diagram of the three-dimensional structure of an ultra-low noise amplifier.

[0017] In the diagram: 1. Support platform; 2. Control panel; 3. Placement seat; 4. Slide groove; 5. Stepper motor; 6. Lead screw; 7. Slider; 8. Clamping plate; 9. Indicator light; 10. Plate groove; 11. Moving plate; 12. Limiting groove; 13. Limiting block; 14. First electrode plate; 15. Second electrode plate; 16. Spring; 17. Signal source; 18. First display screen; 19. Adjustment knob; 20. First plug; 21. Spectrum analyzer; 22. Second display screen; 23. Adjustment key; 24. Second plug; 25. Ultra-low noise amplifier; 26. First connector; 27. Second connector. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0019] Please see Figure 1-5As shown, a test fixture for an ultra-low noise amplifier includes a support platform 1, a control panel 2 mounted on the support platform 1, a placement seat 3 mounted on the support platform 1, a sliding groove 4 formed in the placement seat 3, two sets of sliders 7 symmetrically assembled in the sliding groove 4, a clamping plate 8 mounted on the slider 7, an indicator light 9 mounted on the top side of the clamping plate 8, a plate groove 10 formed inside the clamping plate 8, a movable plate 11 assembled in the plate groove 10, a limiting groove 12 formed inside the clamping plate 8, a limiting block 13 assembled in the limiting groove 12, the limiting block 13 being fixedly connected to the movable plate 11, a first electrode plate 14 mounted on the side wall of the limiting block 13, a second electrode plate 15 mounted on the inner wall of the limiting groove 12, and the limiting block 13 and the inner wall of the limiting groove 12 being... Two sets of springs 16 are installed in the middle. A stepper motor 5 is mounted on the outer wall of the mounting base 3 via a machine base. A lead screw 6 is mounted on the output shaft of the stepper motor 5. The threads on the lead screw 6 are symmetrical and opposite in direction. The lead screw 6 is rotatably mounted on the inner wall of the slide groove 4. The first electrode plate 14 and the second electrode plate 15 are connected to the indicator light 9 through an internal circuit. The indicator light 9 is connected to the control panel 2 through an internal circuit. The control panel 2 is connected to the stepper motor 5 through an internal circuit. During operation, existing test fixtures typically use clamps to hold and fix the ultra-low noise amplifier 25 during testing. Because the clamping force of the clamp cannot be controlled, it is easy to apply excessive clamping force, which can damage the ultra-low noise amplifier. Amplifier 25 was damaged, resulting in poor protection for the ultra-low noise amplifier 25. By placing the ultra-low noise amplifier 25 on the mounting base 3 and controlling the stepper motor 5 via the control panel 2, the stepper motor 5 drives the lead screw 6 to rotate. The lead screw 6 drives two sets of sliders 7 to move synchronously relative to each other. The two sets of sliders 7 drive two sets of clamping plates 8 to move synchronously relative to each other. The two sets of clamping plates 8 move towards the ultra-low noise amplifier 25. During this process, the moving plate 11 on the clamping plate 8 first contacts the side wall of the ultra-low noise amplifier 25. The moving plate 11 is pushed into the plate groove 10 by the ultra-low noise amplifier 25. At the same time, the moving plate 11 drives the limiting block 13 to move horizontally within the limiting groove 12. The limiting block 13... The first electrode 14 moves horizontally and comes into contact with the second electrode 15. At this time, the internal circuit of the indicator light 9 on the clamping plate 8 is turned on, and the indicator light 9 sends an electrical signal to the control panel 2. That is, at the moment when the clamping plate 8 comes into contact with the ultra-low noise amplifier 25, the control panel 2 will receive an electrical signal. At the moment when both clamping plates 8 come into contact with the ultra-low noise amplifier 25 at the same time, the control panel 2 will receive a second electrical signal. At this time, the control panel 2 will control the stepper motor 5 to stop operating, that is, the clamping plate 8 stops moving. This achieves precise control of the clamping force, avoids damage to the ultra-low noise amplifier 25 due to excessive clamping force, and helps to improve the protection of the ultra-low noise amplifier 25.

[0020] Please see Figure 1As shown, an ultra-low noise amplifier 25 is placed on the placement base 3. The ultra-low noise amplifier 25 is equipped with a first connector 26 and a second connector 27. A signal source 17 is installed on the support platform 1. The signal source 17 is equipped with a first display screen 18, an adjustment knob 19, and a first plug 20. A spectrum analyzer 21 is installed on the support platform 1. The spectrum analyzer 21 is equipped with a second display screen 22, an adjustment key 23, and a second plug 24. During operation, the existing testing fixture cannot perform a standardized testing procedure on the ultra-low noise amplifier 25, making it difficult to guarantee testing consistency and resulting in poor testing accuracy. By clamping and fixing the ultra-low noise amplifier 25 with the clamping plate 8, the first connector 26 of the ultra-low noise amplifier 25 is connected to the first plug 20 of the signal source 17 using a connecting cable, and the second connector 27 of the ultra-low noise amplifier 25 is connected to the spectrum analyzer 27 using a connecting cable. The second plug 24 of component 1 is connected, where the ultra-low noise amplifier 25 is model COM-MW, the signal source 17 is model MG3700A, and the spectrum analyzer 21 is model hp8593e. By adjusting the adjustment knob 19 of the signal source 17, the signal generated by the signal source 17 is changed. The ultra-low noise amplifier 25 is used to amplify the electrical signal. Adding the ultra-low noise amplifier 25 in front of the spectrum analyzer 21 can amplify the amplitude of the measured signal, making the signal stronger. Only then can the spectrum analyzer 21 accurately measure the spectrum of the signal; otherwise, errors will occur. The amplifier in front of the spectrum analyzer 21 plays a crucial role in the measurement process of the spectrum analyzer 21. It can amplify the measured signal to an appropriate intensity, improve the signal-to-noise ratio, and perform filtering and other processing. By comparing the spectrum of the spectrum analyzer 21 with the signal value of the signal source 17, the accuracy and precision of the ultra-low noise amplifier 25 can be determined. This structure allows for a standardized testing procedure for the ultra-low noise amplifier 25, ensuring test consistency and improving test accuracy.

[0021] Working principle: Existing testing fixtures typically use clamps to hold and fix the ultra-low noise amplifier 25 during testing. However, due to the inability to control the clamping force, excessive clamping force can easily damage the amplifier 25, resulting in poor protection. By placing the ultra-low noise amplifier 25 on the mounting base 3, the control panel 2 controls the stepper motor 5. The stepper motor 5 drives the lead screw 6 to rotate, which in turn drives two sets of sliders 7 to move synchronously relative to each other. These sliders 7 then drive two sets of clamping plates 8 to move synchronously relative to each other. The clamping plates 8 move towards the ultra-low noise amplifier 25. During this process, the moving plate 11 on the clamping plate 8 first contacts the ultra-low noise amplifier 25. When the sidewalls contact, the moving plate 11 is pushed into the plate groove 10 by the ultra-low noise amplifier 25. Simultaneously, the moving plate 11 drives the limiting block 13 to move horizontally within the limiting groove 12. The limiting block 13 drives the first electrode plate 14 to move horizontally, and the first electrode plate 14 contacts the second electrode plate 15. At this time, the internal circuit of the indicator light 9 on the clamping plate 8 is activated, and the indicator light 9 sends an electrical signal to the control panel 2. That is, at the instant the clamping plate 8 contacts the ultra-low noise amplifier 25, the control panel 2 receives an electrical signal. At the instant both clamping plates 8 simultaneously contact the ultra-low noise amplifier 25, the control panel 2 receives a second electrical signal. At this time, the control panel 2 controls the stepper motor 5 to stop operating, that is, the clamping plate 8 stops moving, achieving precise control of the clamping force and avoiding... Excessive clamping force can damage the ultra-low noise amplifier 25, thus improving its protection. Existing testing fixtures lack standardized testing procedures for the ultra-low noise amplifier 25, making it difficult to guarantee testing consistency and resulting in poor accuracy. By clamping and fixing the ultra-low noise amplifier 25 with clamping plate 8, a connecting cable is used to connect the first connector 26 of the ultra-low noise amplifier 25 to the first plug 20 of the signal source 17, and a connecting cable is used to connect the second connector 27 of the ultra-low noise amplifier 25 to the second plug 24 of the spectrum analyzer 21. The ultra-low noise amplifier 25 is a COM-MW model, and the signal source 17 is an MG3 model. The spectrum analyzer 21, model hp8593e, is used to change the signal generated by the signal source 17 by adjusting the adjustment knob 19. The ultra-low noise amplifier 25 is used to amplify the electrical signal. Adding an ultra-low noise amplifier 25 in front of the spectrum analyzer 21 can amplify the amplitude of the measured signal, making the signal stronger. Only then can the spectrum analyzer 21 accurately measure the spectrum of the signal; otherwise, errors will occur. The amplifier in front of the spectrum analyzer 21 plays a crucial role in the measurement process of the spectrum analyzer 21. It can amplify the measured signal to an appropriate intensity, improve the signal-to-noise ratio, and perform filtering and other processing. By comparing the spectrum of the spectrum analyzer 21 with the signal value of the signal source 17, the accuracy and precision of the ultra-low noise amplifier 25 can be determined.This structure allows for a standardized testing procedure for the ultra-low noise amplifier 25, ensuring test consistency and improving test accuracy.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A test fixture for an ultra-low noise amplifier, characterized in that: Includes a support platform (1), on which a control panel (2) is installed, and on which a placement seat (3) is installed. A groove (4) is formed within the placement seat (3), and two sets of sliders (7) are symmetrically assembled within the groove (4). A clamping plate (8) is installed on each slider (7), and an indicator light (9) is installed on the top side of the clamping plate (8). A plate groove (10) is formed inside the clamping plate (8), and a [missing information] is assembled within the plate groove (10). The movable plate (11) has a limiting groove (12) inside the clamping plate (8). A limiting block (13) is installed in the limiting groove (12). The limiting block (13) is fixedly connected to the movable plate (11). A first electrode plate (14) is installed on the side wall of the limiting block (13). A second electrode plate (15) is installed on the inner wall of the limiting groove (12). Two sets of springs (16) are installed between the limiting block (13) and the inner wall of the limiting groove (12).

2. The ultra-low noise amplifier test fixture according to claim 1, characterized in that: A stepper motor (5) is mounted on the outer wall of the placement seat (3) via a base. A lead screw (6) is mounted on the output shaft of the stepper motor (5). The threads on the lead screw (6) are symmetrical and opposite. The lead screw (6) is rotatably mounted on the inner wall of the slide groove (4).

3. The ultra-low noise amplifier test fixture according to claim 1, characterized in that: The first electrode (14) and the second electrode (15) are connected to the indicator light (9) through an internal circuit. The indicator light (9) is connected to the control panel (2) through an internal circuit. The control panel (2) is connected to the stepper motor (5) through an internal circuit.

4. The ultra-low noise amplifier test fixture according to claim 1, characterized in that: An ultra-low noise amplifier (25) is placed on the placement base (3), and a first connector (26) and a second connector (27) are installed on the ultra-low noise amplifier (25).

5. The ultra-low noise amplifier test fixture according to claim 1, characterized in that: A signal source (17) is installed on the support platform (1), a first display screen (18) is installed on the signal source (17), an adjustment knob (19) is installed on the signal source (17), and a first plug (20) is installed on the signal source (17).

6. The ultra-low noise amplifier test fixture according to claim 1, characterized in that: A spectrum analyzer (21) is installed on the support platform (1), a second display screen (22) is installed on the spectrum analyzer (21), an adjustment key (23) is installed on the spectrum analyzer (21), and a second plug (24) is installed on the spectrum analyzer (21).

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