Device and method for testing and calibrating microwave chip

A microwave chip and microstrip line technology, which is applied in the field of microwave chip test and calibration devices, can solve problems such as inability to connect chips and inaccurate test results, and achieve the effects of stable and reliable test data, improved anti-interference ability, and large grounding area

Inactive Publication Date: 2019-05-10
GUIZHOU AEROSPACE INST OF MEASURING & TESTING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Taking microwave S-parameters as an example, the required test instrument is usually a vector network analyzer, and its input and output ports are usually coaxial connections, which cannot be directly connected to the chip
The S-para...

Method used

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  • Device and method for testing and calibrating microwave chip
  • Device and method for testing and calibrating microwave chip
  • Device and method for testing and calibrating microwave chip

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Embodiment Construction

[0017] The present invention will be further described in detail through specific embodiments below, but these embodiments are only for illustration and do not limit the scope of the present invention.

[0018] Please refer to Figure 1 to Figure 5 , the device for testing and calibrating microwave chips of the present invention comprises: a base, a wave-absorbing material, a cover plate, a cavity with an opening is arranged on the upper end surface of the base, a printed circuit board is placed in the cavity, and the two sides of the base are installed The radio frequency connector SMA, the printed circuit board is connected to the SMA joints arranged on both sides of the base, the absorbing material is sealed in the cavity, and the absorbing material is bonded to the cover plate and fixed on the upper surface of the base.

[0019] In one embodiment, the cover plate is connected to the base by screws.

[0020] In one embodiment, the SMA connector is disposed through mounting...

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Abstract

The invention relates to a device and a method for testing and calibrating a microwave chip. The device comprises a base, a printed circuit board, a connector, a wave absorbing material and a cover plate. An open cavity is formed in an upper end face of the base, the printed circuit board is placed in the cavity, and radio frequency connectors SMA are installed on both sides of the base; the circuit board is connected with the SMA connectors disposed on the both sides of the base; the wave absorbing material is adhered with the cover plate and is fixed to the upper surface of the base; and thecover plate is connected to the base by screws. According to the device provided by the invention, a calibration piece is designed and manufactured, a calibration end face is corrected from the bothends of a traditional radio frequency cable to the center of a through line, and errors in test data caused by a test fixture are eliminated; and the printed circuit board is adhered in the cavity ofthe base to ensure a large enough grounding area, the wave absorbing material is attached on the top of the printed circuit board to isolate the external electromagnetic radiation, thereby improving the anti-interference ability of the test and making the test data be more stable and reliable.

Description

technical field [0001] The invention relates to a device and method for testing and calibrating microwave chips. Background technique [0002] With the continuous advancement of microwave technology, the market size of microwave components has risen sharply. Microwave components have been widely used in various fields such as microwave communication systems, telemetry systems, navigation, biomedicine, electronic countermeasures, and artificial satellites. In the microwave system, those functions such as directional transmission, attenuation, isolation, filtering, phase control, waveform transformation, and impedance transformation domain allocation of microwave signals are collectively referred to as microwave components. Simply put, microwave components are electromagnetic components that work in the microwave frequency band. With the development of science and technology, microwave components are developing in the direction of miniaturization, chip type, high performance...

Claims

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Application Information

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IPC IPC(8): G01R31/28
Inventor 袁帅
Owner GUIZHOU AEROSPACE INST OF MEASURING & TESTING TECH
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