A microwave source

By combining a microwave reference source, filter cavity, integrator, microwave frequency multiplier unit, and directional coupler, and taking into account the Rydberg atomic state electric field-induced transparency phenomenon, the problems of insufficient phase noise and stability of the microwave source were solved, and high stability and low noise microwave frequency output were achieved.

CN109194329BActive Publication Date: 2026-06-26BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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Patent Information

Application Number
CN201810815573.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2018-07-16
Publication Date
2026-06-26
Estimated Expiration
2038-07-16

AI Technical Summary

Technical Problem

Existing microwave sources have shortcomings in terms of phase noise and stability, and existing technical solutions have problems such as large equipment size, high cost and complex structure.

Method used

A combination design of microwave reference source, filter cavity, integrator, microwave frequency multiplier unit, directional coupler and microwave antenna is adopted. By combining the electric field-induced transparency phenomenon of Rydberg atomic states in quantum field strength, the external electric field participates in atomic interaction to form a stable locked spectral line, thereby improving frequency stability and reducing phase noise.

Benefits of technology

It achieves high stability and low phase noise in microwave frequency, and features a simple circuit design, low cost, and small size.

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Abstract

The application discloses a microwave source, which solves the problems of phase noise and stability of the microwave source, and comprises a microwave reference source, a filter cavity, an integrator, a microwave frequency multiplication unit, a directional coupler and a microwave antenna, wherein the microwave reference source outputs a voltage control signal; the filter cavity receives the voltage control signal and filters the voltage control signal to obtain a filtered signal one; the integrator is used for integrating the received filtered signal one to obtain an integrated signal; the microwave frequency multiplication unit is used for frequency multiplying the received integrated signal to obtain a microwave frequency multiplication signal; the directional coupler is used for directionally coupling the received microwave frequency multiplication signal to obtain a microwave signal one and a microwave signal two; and the microwave antenna receives the microwave signal two to obtain an antenna signal. The application can greatly improve the frequency stability of the microwave frequency band, reduce the phase noise, and has simple circuit design, low cost and small size.
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