Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode
Reexamination Certificate
2008-05-27
2008-05-27
Chang, Joseph (Department: 2817)
Active solid-state devices (e.g., transistors, solid-state diode
Field effect device
Having insulated electrode
C331S1170FE
Reexamination Certificate
active
07378709
ABSTRACT:
An oscillator capable of reducing a noise component when partly formed by using the CMOS process or the MOS process. A high-frequency amplifier circuit, a mixing circuit, a local oscillator13, intermediate-frequency filters, an intermediate-frequency amplifier circuit, a limit circuit, an FM detection circuit, and a stereo demodulation circuit which constitute an FM receiver are formed as a one-chip component. The local oscillator13is formed on a semiconductor substrate by using the CMOS process or the MOS process and the transistors constituting the circuit are p-channel type FETs21, 22. Moreover, the local oscillator13has a resonance circuit whose one end is connected to a DC bias circuit composed of a resistor27and the center voltage of the oscillation is set to a value higher than 0 V.
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Chang Joseph
Niigata Seimitsu Co., Ltd.
Patentttm.us
Ricoh & Company, Ltd.
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