Push-push and push-pull dual-output substrate integrated waveguide oscillator

Abstract

The invention discloses a push-push and push-pull dual-output substrate integrated waveguide oscillator, which comprises a substrate integrated waveguide resonant cavity, a first negative resistance type sub-oscillator, a second negative resistance type sub-oscillator and a substrate integrated waveguide broadband magic T, wherein the upper / lower surface of the substrate integrated waveguide resonant cavity is connected with the first / second negative resistance type sub-oscillator through a first microstrip line connector; the first / second negative resistance type sub-oscillator is connected with the upper / lower surface of the substrate integrated waveguide broadband magic T sequentially through a second microstrip line connector and a transition connector; a port Delta of the substrate integrated waveguide broadband magic T is used as a push-pull output port, and a port Epsilon of the substrate integrated waveguide broadband magic T is used as a push-push output port. According to the oscillator, the push-push and push-pull output ports can be simultaneously provided, so that the application of a modern phase-locked loop is facilitated; the resonant cavity of the oscillator is formed by drilling a series of metal through hole arrays in a dielectric substrate, and has characteristics similar to those of a rectangular metal waveguide.

Description

technical field [0001] The invention relates to a substrate integrated waveguide oscillator, in particular to a substrate integrated waveguide oscillator with push-push (Push-Push) and push-pull (Push-Pull) dual outputs. Background technique [0002] High-performance oscillators are important key components in modern wireless communication systems. Push-push structure and push-pull structure oscillators have the advantages of increasing output power, suppressing harmonic components, reducing phase noise, and broadening the frequency band of active devices, and have been widely used in microwave and millimeter wave frequency bands. Substrate integrated waveguide is a new type of transmission line structure with high Q value and low loss realized on a dielectric substrate, which has transmission characteristics and field distribution similar to ordinary rectangular metal waveguides. It has been widely used in various microwave and millimeter wave passive structures in recent y...

AI Technical Summary

Problems solved by technology

[0003] Most oscillators with traditional push-push structure (or push-pull structure) use a narrowband power synthesizer as the output coupling network, which synthesizes a useful frequency 2f 0 (or f 0 ) signal at the same time, it is difficult to cancel the unwanted frequency f 0 (or 2f 0 )Signal

Moreover, the traditional push-push or push-pull oscillator has only one output port for outputting f 0 or 2f 0 Signal

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