Oscillators – Electromechanical resonator – Crystal
Reexamination Certificate
2006-09-19
2006-09-19
Kinkead, Arnold (Department: 2817)
Oscillators
Electromechanical resonator
Crystal
C331S1160FE, C331S1160FE
Reexamination Certificate
active
07109814
ABSTRACT:
In a Colpitts quartz oscillation circuit, large negative resistance values are obtained in a high frequency band, and in the GHz band in particular. In a piezoelectric oscillator having a Colpitts oscillator, a voltage control circuit, and a coupling capacitor that couples the Colpitts oscillator and the voltage control circuit, an output of the voltage control circuit is feed back to a collector of the Colpitts oscillator via the coupling capacitor.
REFERENCES:
patent: 6717482 (2004-04-01), Sato et al.
“Transistor Crystal Oscillators,” pp. 771-777, written by Yasutomo Miyake, and published in Japan by Institute of Electronics and Communication Engineers of Japan in Jun. 1970.
“Quartz Resonators and Devices,” pp. 667-682, written by Hirofumi Kawashima, Koichi Hirama, Naoya Saitou and Mitsuaki Koyama, and published in Japan by Institute of Electronics and Communication Engineers of Japan in Dec. 1999.
“Study on Measurement of Phase Noise in High Precision Oscillator Using PLL Type Frequency Multiplier,” pp. 486-492, written by Yukinori Sakuta, Hideki Mino and Yoshifumi Sekine, and published in Japan by Institute of Electronics and Communication Engineers of Japan in Sep. 1999.
“New Crystal Oscillator Suppressing CI Dip and Frequency Jump,” pp. 249-259, written by Heihachi Shimono, and published in Japan by Institute of Electronics and Communication Engineers of Japan in Apr. 2002.
Kinkead Arnold
Koda & Androlia
Toyo Communication Equipment Co., Ltd.
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