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Oscillator based on coaxial dielectric resonant cavity and design method

A dielectric resonant cavity and oscillator technology, applied in the field of communication, can solve the problems such as the performance is difficult to meet the design requirements, the output frequency phase noise difference, etc., and achieve the effect of reducing the difficulty of processing and debugging, lowering the phase noise, and improving the Q value.

Active Publication Date: 2020-07-14
XIAN BORUI JIXIN ELECTRONICS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of this, in order to solve the problem in the prior art that the output frequency phase noise of the oscillator based on the coaxial dielectric resonator is poor, and the performance is difficult to meet the design requirements

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  • Oscillator based on coaxial dielectric resonant cavity and design method
  • Oscillator based on coaxial dielectric resonant cavity and design method
  • Oscillator based on coaxial dielectric resonant cavity and design method

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Embodiment Construction

[0037]The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0038] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, unless otherwise specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; can be...

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Abstract

The invention provides an oscillator based on a coaxial dielectric resonant cavity. The oscillator comprises a tuning network, a transistor network and a terminal network; the coaxial dielectric resonant cavity is arranged in the tuning network; the transistor network is respectively connected with the tuning network and the terminal network; the tuning network is used for adjusting the oscillation frequency and the phase noise index of the circuit; the transistor network is used for adjusting the frequency range of the negative resistance and the amplitude of the negative resistance; the terminal network is a pi-type network or a T-type network and is used for realizing output matching and harmonic suppression. The invention further provides a design method of the oscillator based on thecoaxial dielectric resonant cavity. The beneficial effects of the invention are that the oscillator is low in phase noise during operation, and can provide a pure local oscillation source; the terminal network can realize load traction and filtering functions. The second harmonic is used as the working frequency, the resonant frequency of the resonant cavity is reduced, the influence of parasiticparameters of the PCB on the performance of the resonant cavity is reduced, the Q value of the resonant network can be effectively improved, and the processing and debugging difficulty is reduced.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an oscillator and a design method based on a coaxial dielectric resonant cavity. Background technique [0002] The frequency source is the heart of electronic equipment such as communication, radar, instrument, space electronic equipment, and television. Its performance directly affects the performance index of the system, and the local oscillator is a key component of the frequency source, and its index directly determines the entire system. The performance of the frequency source. With the continuous development of the radar and wireless communication industries, the system has put forward higher and higher requirements on the performance of the local oscillator source, and the search for a local oscillator source with low phase noise and high stability has become the main development trend. In modern communication equipment, it is usually required that the local oscilla...

Claims

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Application Information

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IPC IPC(8): H03B5/18
CPCH03B5/1805
Inventor 吕磊
Owner XIAN BORUI JIXIN ELECTRONICS TECH
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