Millimeter wave radar signal generator

Abstract

The invention discloses a millimeter wave radar signal generator. The signal generator comprises a double-loop phase-locked frequency synthesis circuit, a power calibration circuit and a control module, the double-loop phase-locked frequency synthesis circuit outputs frequency-reduced and phase-locked millimeter waves according to the frequency mixing signal and a frequency control signal sent bythe control module; the frequency mixing signal is a signal obtained by mixing output signals of two phase-locked loop circuits in the double-loop phase-locked frequency synthesis circuit, i.e., a phase discrimination signal in the phase-locked loop is converted into an intermediate frequency signal from a millimeter wave signal, so that the problem that accurate frequency output cannot be realized due to easy loss of lock caused by high frequency of millimeter waves is solved; and the power calibration circuit receives the power calibration signal sent by the control module, carries out powercalibration on the millimeter waves after frequency reduction and phase locking according to the power calibration signal, adjusts the power in the bandwidth of the millimeter waves after frequency reduction and phase locking to be the same, and solves the problem that long-time stable work cannot be carried out due to power fluctuation caused by the bandwidth of the millimeter waves.

Description

technical field [0001] The invention relates to the technical field of radar signal generators, in particular to a millimeter-wave radar signal generator. Background technique [0002] Due to its high operating frequency and wide bandwidth, millimeter-wave radar signal generators are technically more difficult than microwave signal sources. There are problems such as low output frequency resolution, poor phase noise, and easy frequency lockout under broadband conditions. Moreover, the existing millimeter-wave radar signal method generator does not have the frequency measurement function, cannot track the power fluctuation of the millimeter-wave radar seeker, and cannot work stably for a long time. Contents of the invention [0003] The purpose of the present invention is to provide a millimeter-wave radar signal generator, which solves the problems that it cannot work stably for a long time due to power fluctuations, and the frequency is easy to lose lock and cannot achiev...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a millimeter-wave radar signal generator, which solves the problems that it cannot work stably for a long time due to power fluctuations and the frequency is easy to lose lock and cannot achieve accurate frequency output.

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