Millimeter wave fundamental frequency oscillation circuit and millimeter wave oscillator

Abstract

The invention is applicable to the field of radio frequency communication, and provides a millimeter wave fundamental frequency oscillation circuit and a millimeter wave oscillator. The millimeter wave fundamental frequency oscillation circuit comprises a bypass capacitor, an output matching unit, a negative resistance effect generating unit, a buffer unit and an inductance voltage-transformation unit, wherein the output matching unit maximizes secondary harmonic output energy of the oscillator, and outputs a millimeter wave oscillation signal; the negative resistance effect generating unit generates a negative resistance effect to compensate for loss of a resonance circuit; the buffer unit generates a buffer stage output signal; the inductance voltage-transformation unit forms a transformer structure by utilizing inductors so as to reduce stray capacitance of a switching tube, and feeds back the buffer stage output signal to the resonance circuit. The millimeter wave fundamental frequency oscillation circuit and the millimeter wave oscillator utilize the coupling effect of an output buffer stage inductor and a resonance loop inductor, utilize the coupling effect of gate end and strain end inductors of an active switching device to improve the output frequency and energy of the oscillator, lead out the output signal from a common-mode node of the circuit, achieve output matching by means of a coplanar waveguide structure, extract the secondary harmonics of the circuit, and implements the millimeter wave oscillation circuit with high output frequency and output power.

Description

technical field [0001] The invention belongs to the field of radio frequency communication, and in particular relates to a millimeter wave fundamental frequency oscillation circuit and a millimeter wave oscillator. Background technique [0002] With the rapid development of emerging wireless communication and millimeter-wave radar, oscillators, as key components of communication and radar systems, are also required to have lower phase noise, higher output frequency and greater output power to improve their performance. [0003] High-frequency periodic signals can usually be obtained directly from fundamental frequency oscillators or superharmonic oscillators. Due to the development of CMOS technology, with the reduction of the size of MOS devices, its ft and fmax have been greatly improved, but the current oscillation The oscillator cannot directly provide the fundamental frequency oscillation signal of the millimeter-wave frequency band. At present, the fundamental frequen...

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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a millimeter-wave fundamental frequency oscillation circuit, aiming to solve the problems of low output power and high power consumption of existing millimeter-wave oscillators

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