Receiver having high-frequency amplifier circuit portions...

Details Receiver having high-frequency amplifier circuit portions... Receiver having high-frequency amplifier circuit portions...

2006-10-31

2006-10-31

Eng, George (Department: 2617)

Telecommunications

Receiver or analog modulated signal frequency converter

C455S147000, C455S148000, C455S222000, C455S296000, C455S311000

Reexamination Certificate

active

07130597

ABSTRACT:
A receiver capable of reducing a low-frequency noise generated when a component is integrally formed on a semiconductor substrate by using CMOS process or MOS process. A high-frequency amplifier circuit11, a mixing circuit12, a local oscillator13, intermediate-frequency filters14and16, an intermediate-frequency amplifier circuit15, a limit circuit17, an FM detection circuit18, and a stereo demodulation circuit19constituting an FM receiver are formed as a one-chip component10. This one-chip component10is formed on a semiconductor substrate by using the CMOS process or the MOS process. The amplification elements contained in the mixing circuit12, the intermediate-frequency filters14and16, the intermediate-frequency amplifier circuit15, and the local oscillator13are formed by using the p-channel type FET.

REFERENCES:
patent: 6930552 (2005-08-01), Miyagi
patent: 2001/0031629 (2001-10-01), Elder et al.
patent: 2002/0142746 (2002-10-01), Li et al.
patent: 07-245568 (1995-09-01), None
patent: 09-139689 (1997-05-01), None
patent: 2000-82779 (2000-03-01), None
patent: 2000-332629 (2000-11-01), None
patent: 2002-057294 (2002-02-01), None

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