Phase noise calibrating device based on photoelectric fusion technique

A phase noise and photoelectric fusion technology, applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems of high price, poor dynamic range, and low comparison measurement accuracy, and achieve the effect of simple structure and improved accuracy

Inactive Publication Date: 2012-11-14
中国航天科工集团第二研究院二〇三所
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Problems solved by technology

[0005] The purpose of the present invention is to provide a phase noise calibration device based on photoelectric fusion technology to solve the problem of poor dynamic range of phase noise traceability phase noise standards, complex structure, expensive price, and no accuracy of phase noise measur

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  • Phase noise calibrating device based on photoelectric fusion technique

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Embodiment Construction

[0013] A phase noise calibration device based on photoelectric fusion technology, including: microwave amplifier 2, power divider 3, phase shifter 4, modulator 5, attenuator 6, phase noise measurement system 10, also includes: photoelectric oscillator 1, Microwave noise source 9, broadband amplifier 8, bandpass filter 7.

[0014] The output end of the photoelectric oscillator 1 is connected with the microwave cable at the input end of the microwave amplifier 2, the output end of the microwave amplifier 2 is connected with the microwave cable at the input end of the power divider 3, and the phase shifter end of the power divider 3 is connected with the input end of the phase shifter 4 by microwave cable connection, the modulation end of the power divider 3 is connected to the signal end of the modulator 5 with a microwave cable, the output end of the phase shifter 4 is connected to the microwave cable at the local oscillator end of the phase noise measurement system 10, and the ...

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Abstract

The invention discloses a phase noise calibrating device based on a photoelectric fusion technique, which comprises a microwave amplifier (2), a power divider (3), a phase shifter (4), a modulator (5), an attenuator (6) and a phase noise measurement system (10), and further comprises a photoelectric oscillator (1), a microwave noise source (9), a broadband amplifier (8) and a band-pass filter (7). The photoelectric oscillator is developed through the photoelectric fusion technique, so the phase noise calibrating device has a large phase noise standard dynamic range and a simple structure, and can calibrate the phase noise measurement result precision, so the defects of the existing calibrating method are overcome, and thus, the phase noise measurement result precision traceability of a microwave frequency band is obtained.

Description

technical field [0001] The invention relates to a phase noise calibration device, in particular to a phase noise calibration 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. [0003] At present, only the NIST laboratory has established a phase noise standard device in the world, but the carrier source used in the microwave frequency band is a microwave oscillator that is currently widely used, inclu...

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Application Information

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IPC IPC(8): G01R35/00
Inventor 阎栋梁柳丹
Owner 中国航天科工集团第二研究院二〇三所
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