Radio wave receiving apparatus, radio wave receiving circuit...

Details Radio wave receiving apparatus, radio wave receiving circuit... Radio wave receiving apparatus, radio wave receiving circuit...

2006-07-20

2010-06-01

Vo, Nguyen (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S318000, C455S323000, C368S013000

Reexamination Certificate

active

07729681

ABSTRACT:
In the radio-wave receiving apparatus according to the invention, a signal received by a receiving antenna is amplified and the amplified received signal is input into a multi-stage frequency conversion circuit including a plurality of basic circuits connected in series. The multi-stage frequency conversion circuit converts the frequency of the received signal from the antenna into frequencies based on signals input from the frequency divider circuit sequentially, thereby to output a signal “a” which is obtained by conversions into gradually lower frequencies. Detection is performed by a detection circuit on the basis of the signal. Thereby, a radio-wave receiving apparatus which requires no local oscillating circuit nor a PLL circuit and is also stable in operation and high in accuracy is realized.

REFERENCES:
patent: 4580289 (1986-04-01), Enderby
patent: 5422863 (1995-06-01), Minowa et al.
patent: 5537101 (1996-07-01), Nakajima et al.
patent: 5621703 (1997-04-01), Kanesaka
patent: 5832375 (1998-11-01), Leisten et al.
patent: 5930697 (1999-07-01), Boehme et al.
patent: 6288977 (2001-09-01), Yoshida et al.
patent: 2001/0043109 (2001-11-01), Masumoto et al.
patent: 2003/0117901 (2003-06-01), Takada et al.
patent: 2005/0260957 (2005-11-01), Someya et al.
patent: 1 156 581 (2001-11-01), None
patent: 2002-82187 (2002-03-01), None
patent: WO 2004/015880 (2004-02-01), None
Extended European Search Report dated May 13, 2009 (7 pages), issued in counterpart European Application Serial No. 06014946.5.

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