Temperature compensated crystal oscillator employing new shape GT cut quartz crystal resonator

TLDR: In this article, a temperature internally compensated crystal oscillator using the novel GT-cut quartz crystal resonator formed by an etching method is described, and it is theoretically predicted and experimentally shown that R/sub d/ and r/sub qs/ influence the oscillation frequency and the frequency-temperature behavior.

Abstract: The authors describe a temperature internally compensated crystal oscillator using the novel GT-cut quartz crystal resonator formed by an etching method. The object is to clarify if drain output resistance R/sub d/ and resistance R/sub qs/ connected in series to the resonator in elements constructing a CMOS oscillator circuit which suppress spurious vibrations, influence oscillation frequency and frequency-temperature behavior. First, a CMOS quartz crystal oscillator circuit is transformed into an equivalent circuit, and an equation which gives oscillation frequencies is derived from Kirchhoff's law. Second, since the equation is given as a function of R/sub d/ and R/sub qs/, it is theoretically predicted and experimentally shown that R/sub d/ and R/sub qs/ influence the oscillation frequency and the frequency-temperature behavior. >