Receiver of double conversion system with antenna tuning...

Details Receiver of double conversion system with antenna tuning... Receiver of double conversion system with antenna tuning...

2007-09-11

2007-09-11

Urban, Edward F. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

C455S193300, C455S562100, C455S191200, C343S745000, C343S750000

Reexamination Certificate

active

10533777

ABSTRACT:
A receiver of double conversion system wherein unwanted components included in received signals can be removed without fail and wherein the number of constituent parts has been reduced. The receiver comprises an antenna tuning circuit10including a tuning coil11and a variable-capacitance diode13; a high frequency amplification circuit20for performing a high frequency amplification of a signal outputted by the antenna tuning circuit10; two-stage mixing circuits22, 28for performing two frequency conversions of an output from the high frequency amplification circuit20; and a detecting circuit36for detecting an output from the latter-stage mixing circuit28.

REFERENCES:
patent: 4326296 (1982-04-01), Rafter et al.
patent: 4491978 (1985-01-01), Nagata et al.
patent: 4862516 (1989-08-01), Macnak et al.
patent: 5301358 (1994-04-01), Gaskill et al.
patent: 5428829 (1995-06-01), Osburn et al.
patent: 5585751 (1996-12-01), Iizuka
patent: 5745844 (1998-04-01), Kromer et al.
patent: 6239760 (2001-05-01), Van Voorhies
patent: 6795128 (2004-09-01), Yamamoto
patent: 6867745 (2005-03-01), Dunn et al.
patent: 7079195 (2006-07-01), Birleson et al.
patent: 2002/0065539 (2002-05-01), Von Arx et al.
patent: 2002/0107054 (2002-08-01), Fujisawa et al.
patent: 2004/0116091 (2004-06-01), McGinn
patent: 2006/0145918 (2006-07-01), Henderson et al.
patent: 63-077275 (1988-04-01), None
patent: 05-043629 (1993-06-01), None
patent: 10-173565 (1998-06-01), None
patent: 2000-174653 (2000-06-01), None
patent: 2002-319846 (2002-10-01), None

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