A multi-parameter test platform for nonlinear effect of receiver radio frequency link

Abstract

The invention discloses a receiver radio frequency link nonlinear effect multi-parameter test platform, including: intermodulation test subsystem, power compression test subsystem, amplitude and phase error test subsystem, receiver link parameter test subsystem, theoretical parameters Multiple test modules such as calculation and test subsystems, realize dual-frequency images, input and output power response graphs at fixed frequency points, 1dB compression point graphs at different frequency points, power compression three-dimensional graphs, error vector magnitudes, amplitude-frequency characteristic graphs, phase Frequency characteristic graph, nonlinear effect parameters, third-order interception point and adjacent channel power ratio test and display. It is a universal comprehensive test platform solution for nonlinear effects of receiver radio frequency links. Test the non-linear effects of receivers of various types and frequency bands between 40GHz.

Description

technical field [0001] The invention relates to the technical field of receiver radio frequency link testing, in particular to a receiver radio frequency link nonlinear effect multi-parameter test platform. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The passive intermodulation product has a threshold effect, and the intermodulation product does not appear when the input level does not reach the threshold value, but when the power level reaches or exceeds a certain threshold value, the passive intermodulation product will appear. Passive intermodulation products change with time, are unstable in time, and are also very sensitive to temperature. In order to obtain more reliable data, long-term observations under various test conditions are required. [0004] There are mainly five methods for testing intermodulation products: transmissi...

AI Technical Summary

Problems solved by technology

[0005] For passive intermodulation test equipment, there are currently relevant equipment for testing one or several parameters and instruments, but there is no comprehensive multi-parameter and comprehensive test platform for comprehensive nonlinear effects.

At present, the comprehensive test platform for the nonlinear effect of the radio frequency link of the receiver is still in a blank state. During the nonlinear research, a test platform is temporarily built, and the test results are applied to other research and applications of the receiver link. Due to the electromagnetic environment As well as different conditions such as temperature in different application scenarios, the error of a test result in future applications is very large

[0006] In addition, the ubiquitous test platform instruments for receiver links are currently blank. The current test instruments are mainly used to test certain link parameters, and the test instruments that cover almost all response nonlinear effects have not yet appeared.

When it is necessary to test parameters related to nonlinear effects, building a temporary test platform according to the nature of the parameters is the current mainstream test method. When the test parameters change, the test platform will also be changed accordingly. Due to the different assembly environments, the test data often varies. Repeatability crossover, the data provided have large errors

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