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Automatic testing method and system for transmission characteristic of microwave/millimeter wave vector modulator

An automatic test system, vector modulator technology, applied in radio wave measurement systems, instruments, etc., can solve the problem of automatic measurement technology without microwave/millimeter wave vector modulators

Active Publication Date: 2011-10-05
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many technologies related to the measurement of transmission characteristics, so far there is no automatic measurement technology for the transmission characteristics of microwave / millimeter wave vector modulators

Method used

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  • Automatic testing method and system for transmission characteristic of microwave/millimeter wave vector modulator
  • Automatic testing method and system for transmission characteristic of microwave/millimeter wave vector modulator
  • Automatic testing method and system for transmission characteristic of microwave/millimeter wave vector modulator

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Embodiment 1

[0136] This embodiment provides an automatic test system for the transmission characteristics of a microwave / millimeter wave vector modulator, including a small signal transmission characteristic test system and a large signal transmission characteristic test system; wherein the large signal transmission characteristic test system includes a large signal power compression characteristic test Equipment, large signal phase compression characteristic test equipment.

[0137] 【Small signal transmission characteristics test system】

[0138] Such as figure 1 As shown, the calibration equipment of the small signal transmission characteristic testing system includes vector network analyzer 1c, GPIB bus G, GPIB-USB control card 1b, main control computer 1a; GPIB-USB control card 1b is connected with main control computer 1a, The vector network analyzer 1c is connected with the GPIB-USB control card 1b through the GPIB bus G.

[0139] Such as figure 2 As shown, the small signal tran...

Embodiment 2

[0171] This embodiment provides a test method for an automatic test system for the transmission characteristics of a microwave / millimeter wave vector modulator, the method comprising: 1) a small signal transmission characteristic test method; 2) a large signal power compression characteristic test method; 3) a large signal Phase compression characteristic test method.

[0172] 1) Small signal transmission characteristic test method

[0173] Before the small-signal transmission characteristic test starts, the small-signal transmission characteristic calibration is performed first, and the vector network analyzer dual-port transmission characteristic calibration is completed to ensure that the calibration status of the vector network analyzer does not change after calibration, otherwise the vector network analysis needs to be completed again Calibration of the two-port transfer characteristics of the instrument.

[0174] The small signal transmission characteristic calibration ...

Embodiment 3

[0251] This embodiment describes in detail the transmission characteristic test method and automatic test system of the microwave / millimeter wave vector modulator of the present invention with reference to the accompanying drawings. The automatic test system for transmission characteristics of a microwave / millimeter wave vector modulator according to the present invention is composed of a small signal transmission characteristic test system, a large signal power compression characteristic test system, a large signal phase compression characteristic test system and other systems. Each system consists of test equipment, test instruments, automatic test control part and test software. The automatic test control part is composed of the main control computer, GPIB bus, and GPIB-USB control card. The user uses the test software running on the main control computer to operate the test instrument through the GPIB-USB control card and use the GPIB bus to read and save the test data. . ...

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Abstract

The invention discloses an automatic testing method and system for a transmission characteristic of a microwave / millimeter wave vector modulator. The system comprises a small signal transmission characteristic testing system and a large signal transmission characteristic testing system; and the large signal transmission characteristic testing system includes a large signal power compression characteristic testing system and a large signal phase compression characteristic testing system. The automatic testing system is allocated flexibly, is suitable for automatically testing the transmission characteristic of various millimeter wave frequency sections, and can universally realize the automatic testing of the transmission characteristic of the microwave / millimeter wave vector modulator under the large signal condition and under the small signal condition; moreover, the invention also overcomes the trouble of lacking pf the large signal phase compression characteristic and the large signal power compression characteristic testing method and the automatic testing system in the domestic microwave / millimeter wave vector modulator at present, and avoids the defects, such as low efficiency, low precision, a plurality of uncertain factors and the like in the manual testing.

Description

technical field [0001] The invention belongs to the technical field of testing and measuring of solid-state electronics, and relates to an automatic testing method and system for transmission characteristics of a microwave / millimeter wave vector modulator. Background technique [0002] Since the microwave / millimeter wave vector modulator can achieve any combination of signal amplitude and phase, the microwave / millimeter wave vector modulator can simultaneously realize the joint modulation of the microwave / millimeter wave beam amplitude and phase, which can form a new type of microwave / millimeter wave active phased array system, that is, it can realize the functions of multi-digit digital attenuator chip and multi-digit digital phase shifter chip in the existing microwave / millimeter wave active phased array system at the same time. The advantage of this is that : 1) The microwave / millimeter wave vector modulator can obtain better amplitude-phase consistency in a wide frequen...

Claims

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Application Information

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IPC IPC(8): G01S7/40
Inventor 吴亮孙晓玮孙朋飞钱蓉佟瑞韩克武侯阳楼丹
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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