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A microwave frequency locking device

A locking device and microwave frequency technology, applied in the microwave field, can solve problems such as low stability and high phase noise

Active Publication Date: 2022-05-27
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present application provides a microwave frequency locking device to solve the problems of low stability and high phase noise of existing microwave frequency locking devices

Method used

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  • A microwave frequency locking device
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Embodiment Construction

[0012] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0013] The technical solutions provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0014] figure 1 A schematic structural diagram of a novel microwave frequency locking device provided in an embodiment of the present application.

[0015] It includes a main lo...

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Abstract

The present application discloses a microwave frequency locking device, which includes a main loop and a phase control loop; the main loop is used for frequency selection and start-up of a frequency source, including a resonator, a band-pass filter, a first voltage-controlled phase shifter, The amplifier, the first directional coupler and the circulator are sequentially connected to form a closed loop; the phase control loop is used to adjust and lock the main loop microwave signal, including a detector, a lock-in amplifier, an integrator and The first signal synthesis device is connected sequentially; the detector is connected to the main loop circulator, and the output end of the first signal synthesis device is connected to the first voltage-controlled phase shifter of the main loop; the lock-in amplifier is connected to the first voltage-controlled phase shifter of the main loop. The first signal synthesis device inputs the same modulation signal, and the first signal synthesis device is externally connected to a DC stabilized power supply. The invention has the advantages of simple structure, ultra-high frequency stability and ultra-low background phase noise, and is applied to the development and production of high-frequency oscillators.

Description

technical field [0001] The present application relates to the field of microwave technology, and in particular, to a microwave frequency locking device. Background technique [0002] At present, the application requirements of high-precision time-frequency sources in aerospace, time-frequency measurement calibration, scientific research and other fields are increasingly urgent. The traditional frequency doubling of crystal oscillators can no longer meet the application requirements. Ultra-low phase noise microwave source, the device is produced to adapt to different kinds of microwave resonators. [0003] The conventional locking device uses the S11 characteristic of the resonator to correlate the reflected signal of the resonant cavity with the signal entering the cavity to obtain phase information, and then use the phase detection signal to control the voltage-controlled phase shifter to form a negative feedback loop to ensure oscillation. However, the modulation signal o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03L7/099
CPCH03L7/099
Inventor 黄凯陈海波朱玺
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT