Oscillators – Solid state active element oscillator – Transistors
Reexamination Certificate
2008-05-27
2008-05-27
Chang, Joseph (Department: 2817)
Oscillators
Solid state active element oscillator
Transistors
C331S1070DP
Reexamination Certificate
active
07378915
ABSTRACT:
At least one of a rise time and a fall time of a dielectric resonator oscillator are reduced. The dielectric resonator oscillator includes a dielectric resonator, a drive circuit for applying a resonance voltage to the dielectric resonator, a switch for applying a voltage required for generating the resonance voltage to the drive circuit, a switch for applying a ground voltage for stopping generation of the resonance voltage to the drive circuit, and a capacitor connected to a power terminal side that supplies a voltage, as seen from the switch, for removing noise generated by the drive circuit. If these switches are made conductive exclusively, oscillation can be stopped immediately by turning on the switch. Since the capacitor is in a charge storage state at all times, regardless of ON/OFF of the switch, the oscillation operation can be started immediately when the switch is turned ON.
REFERENCES:
patent: 6157269 (2000-12-01), Orr
patent: 6535072 (2003-03-01), Yamashita et al.
patent: 6897735 (2005-05-01), Nagasaku et al.
patent: 2004/0183604 (2004-09-01), Ammar et al.
patent: 07-318639 (1995-12-01), None
Adachi Takuya
Kurata Hitoyoshi
Chang Joseph
TDK Corporation
Young Law Firm P.C.
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