Characteristics of Phase-noise in Oscillation Circuits in SC-cut Resonators using Partial Electrodes

Watanabe, Yasuyuki; Hayashi, Rifwa; Sato, Takayuki

doi:10.1541/ieejeiss.137.152

Cited by 1 publication

(1 citation statement)

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“…We then developed a low phase-noise oscillation circuit using the stress compensated cut of quartz crystal resonators by improving upon our Colpitts crystal oscillator circuit. 22,23) In these studies, we conducted experiments involving the above quartz crystal resonators at a resonance frequency of 10 MHz at which low phase noise can be easily achieved. We also reported on the phase-noise reduction in the carrier vicinity.…”

Section: Introductionmentioning

confidence: 99%

Effect on phase-noise characteristics of Butler oscillator circuits having quartz crystal resonators on Base terminals

Watanabe

Xin

Sakamoto

2019

Jpn. J. Appl. Phys.

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We describe the phase-noise characteristics and analyze a model of the Butler crystal oscillators and propose an oscillation circuit with two quartz crystal resonators for the Base terminal of a Butler crystal oscillator and evaluated the phase noise in the carrier vicinity. The experiment and simulation were able to be carried out using the Colpitts oscillators to reduce the phase noise. However, in the recent mobile communication, it was requested that the oscillators, which were a high frequency, and Butler crystal oscillators corresponded to probable circuits of the reliability. The Butler crystal oscillator using two quartz crystal resonators, it was only implementation in the simulation before. We decided to demand previous simulation by the experiment this time. This noise decreased to −22.5 dBc Hz−1 with our oscillation circuit compared with that with only one quartz crystal resonator during our simulation and experiment.

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Section: Introductionmentioning

confidence: 99%