Radio wave receiver, radio wave reception integrated...

Details Radio wave receiver, radio wave reception integrated... Radio wave receiver, radio wave reception integrated...

2004-11-01

2009-06-02

Ghayour, Mohammad H (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

C375S316000, C375S346000, C375S324000

Reexamination Certificate

active

07542524

ABSTRACT:
A circuit for canceling noise components is provided for a radio wave receiver which receives a long wave standard radio wave. The circuit includes a multiplier, a divider, a differentiation circuit and an adder, and obtains a signal by shifting the phase of a carrier signal by 90 degrees, wherein the carrier signal has the same frequency and the same phase as those of the carrier of a received signal outputted from a carrier reproduction circuit. Thereby, it is possible to certainly remove the noises in the vicinity of a received frequency.

REFERENCES:
patent: 5500877 (1996-03-01), Park
patent: 6320842 (2001-11-01), Mochizuki
patent: 7251295 (2007-07-01), Jun
patent: 61-129924 (1986-06-01), None
patent: 2002-048883 (2002-02-01), None
patent: 2002-162482 (2002-06-01), None
patent: 2002-218338 (2002-08-01), None

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