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W-band signal testing method

A signal testing and waveband technology, applied in transmission monitoring, electrical components, transmission systems, etc., can solve the problems of non-adjustment, inconvenience to move, poor adaptability, etc., and achieve the effect of comprehensive integrated functions, convenient construction and few parts.

Pending Publication Date: 2022-02-15
北京天地一格科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] If high-end instruments are used for direct measurement, the cost of instruments and cables is extremely high, and it is not easy to move
If a W-band spread spectrum component is used, and the vector network analyzer is cascaded with the spread spectrum component to realize the measurement of the DUT, the output power of the spread spectrum component is high (about 8 ~ 9dBm) and cannot be adjusted, and the adaptability is poor, so it is difficult to adapt different test artifacts

Method used

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Effect test

Embodiment 1

[0029] Please refer to figure 1 and figure 2 , an embodiment of the present invention provides a W-band signal testing method,

[0030] S101. Connect the DUT between two frequency conversion modules that are compatible with expansion, and the above two frequency conversion modules include a first frequency conversion module and a second frequency conversion module;

[0031] The existing W-band spread spectrum component is used to realize the measurement method of the DUT by cascading the upper spread spectrum component through the vector network analyzer. The output power of the spread spectrum component is high (about 8-9dBm) and cannot be adjusted. Gain test piece will easily cause the test piece to work to the output power saturation state, and in severe cases, the tested piece will be burned.

[0032] In order to avoid the occurrence of the above situation, in this embodiment, a frequency conversion module capable of compatibility and expansion is used as the test termi...

Embodiment 2

[0044] In the above frequency conversion module, the frequency multiplier is an active frequency multiplier, and the mixer is an active frequency mixer.

[0045] The active frequency multiplier U3 amplifies the input local oscillator signal LO under the condition of the driving power supply and performs secondary frequency multiplication and drive amplification on the signal, and at the same time has a certain inhibitory effect on the fundamental wave and the third harmonic;

[0046] Active mixer U2, in the case of driving power supply, performs triple frequency multiplication and drive amplification on the input local oscillator signal 2*LO (which has been twice frequency multiplied and driven to amplify) to obtain a mixed frequency local oscillator signal 6*LO, At the same time, it has strong fundamental wave and 2nd harmonic suppression for the input local oscillator signal 2*LO; the local oscillator signal 6*LO after frequency multiplication and amplification drives the mix...

Embodiment 3

[0052] Please refer to figure 2 and image 3 , the present embodiment provides a W-band signal testing method. In a conventional W-band test, the first frequency conversion module and the second frequency conversion module are directly connected to both ends of the device under test, and the first frequency conversion module is respectively transferred to the first frequency conversion module by using a vector network analyzer. The module and the second frequency conversion module provide local oscillator signals, and use the S parameter measurement function of the above-mentioned vector network analyzer to realize the measurement of the transmission parameters of the DUT.

[0053] In conventional W-band active / passive testing, such as figure 2 shown using a vector network analyzer four-port measurement scheme, or using a image 3 A two-port measurement scheme using a vector network analyzer is shown. When using a four-port vector network analyzer to cooperate with the me...

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Abstract

The invention discloses a W-band signal testing method, and relates to the field of microwave signal measurement. The W-band signal testing method comprises the steps that a tested piece is connected between two frequency conversion modules capable of being compatibly expanded, and the two frequency conversion modules comprise a first frequency conversion module and a second frequency conversion module; the first frequency conversion module is used as a transmitting end to transmit a W-band test signal to a tested piece, and the second frequency conversion module is used as a receiving end to receive the W-band test signal passing through the tested piece; and the analysis equipment analyzes and calculates the W-band test signals before and after passing through the tested piece so as to obtain characteristic parameters of the tested piece. According to the W-band signal test method described by the invention, the frequency conversion modules which can be compatible and expanded are respectively added at the receiving end and the transmitting end, and the W-band signal test is converted into the X-band signal test, so that the frequency and power requirements of a test instrument are reduced, and the flexibility and convenience of the test process are improved.

Description

technical field [0001] The invention relates to the technical field of microwave signal measurement, in particular to a W-band signal testing method. Background technique [0002] For the test of W-band signals, the existing test methods mainly include direct measurement with high-end instruments, and the use of spread spectrum components to first multiply and then divide the frequency to convert W-band signals to low-frequency bands for testing, or use W-band The mixer module assists in testing three methods. [0003] If the high-end instrument is used for direct measurement, the cost of the instrument and cables is extremely high, and it is not easy to move. If a W-band spread spectrum component is used, and the vector network analyzer is cascaded with the spread spectrum component to realize the measurement of the DUT, the output power of the spread spectrum component is high (about 8 ~ 9dBm) and cannot be adjusted, and the adaptability is poor, so it is difficult to ada...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00
CPCH04B17/0082
Inventor 刘益萍管玉静李灿
Owner 北京天地一格科技有限公司
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