A microwave and millimeter wave phase noise standard device based on photoelectric fusion technology

Abstract

The invention discloses a microwave and millimeter wave phase noise standard unit based on a photoelectric fusion technology. The microwave and millimeter wave phase noise standard unit includes a baseband signal generator which outputs frequency fine resolution signal; a noise modulator which performs noise modulation on the frequency fine resolution signal, and generates a baseband phase noise standard after noise modulation; an optical comb-based harmonic generator which outputs a plurality of harmonic signals; an intermediate frequency generator which generate an intermediate frequency signal according to the baseband phase noise standard and the plurality of harmonic signals; an OEO dot frequency-based local oscillator which generates a local oscillator signal; a high-frequency extension module which generates a phase noise standard of high-frequency microwaves and millimeter waves according to the intermediate frequency signal and the local oscillator signal; and a low-frequency extension module which generates a phase noise standard of low-frequency microwaves and millimeter waves according to the intermediate frequency signal and the local oscillator signal. The microwave and millimeter wave phase noise standard unit based on the photoelectric fusion technology is suitable for calibration of a phase noise measurement system in a microwave and millimeter wave frequency range, and can solve the problem that a microwave and millimeter wave phase noise measurement system cannot trace to the source at present.

Description

technical field [0001] The invention relates to a microwave and millimeter wave phase noise standard device. More specifically, it relates to a microwave and millimeter wave phase noise standard device based on photoelectric fusion technology. Background technique [0002] The current phase noise measurement devices on the market mainly include the imported HP3047A, HP3048A, E5500 series and PN9000, etc. The components of these devices mainly include phase detectors, phase-locked loops, low-noise amplifiers, data acquisition and computers. According to the national military standard GJB / G3414-98 "Phase Noise Test System Verification Regulations", some of its indicators can be calibrated / verified, but the accuracy of the phase noise measurement results of the phase noise measurement system cannot be calibrated / verified. At present, only the NIST laboratory has established a microwave and millimeter wave phase noise standard device in the world, which consists of a dielectric...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a microwave and millimeter wave phase noise standard device based on photoelectric fusion technology, to solve the problem that the phase noise measurement system in the existing microwave and millimeter wave frequency range cannot be traced back to the source, specifically as follows: 1. Calibrate the accuracy of the phase noise measurement results within the analysis frequency range; 2. The accuracy of the comparison measurement is not high, and the measurement uncertainty is 3dB; 3. The measurement results cannot be obtained immediately. come to conclusion

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