Telecommunications – Receiver or analog modulated signal frequency converter
Reexamination Certificate
2007-06-12
2007-06-12
Nguyen, Simon (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
C455S318000, C455S324000, C455S326000, C455S339000, C348S725000, C348S729000, C348S731000
Reexamination Certificate
active
10695825
ABSTRACT:
A high frequency receiver of the present invention has a mixer of which one input part is connected to an output part of a filter and the other input part is connected to an output part of a frequency-variable local oscillator, and an output terminal connected to an output part of the mixer. The mixer is an image rejection mixer. The filter has a moderated damping characteristic in a frequency where the image rejection mixer reduces an image. Therefore, a high performance filter is not required, and hence a low price is realized.
REFERENCES:
patent: 5737035 (1998-04-01), Rotzoll
patent: 5758276 (1998-05-01), Shirakawa et al.
patent: 5852772 (1998-12-01), Lampe et al.
patent: 5870670 (1999-02-01), Ripley et al.
patent: 6594477 (2003-07-01), Kitaguchi
patent: 6714776 (2004-03-01), Birleson
patent: 7079195 (2006-07-01), Birleson et al.
patent: 7092043 (2006-08-01), Vorenkamp et al.
patent: 2003/0025841 (2003-02-01), Sawyer
patent: 2004/0002323 (2004-01-01), Zheng
patent: 2005/0096004 (2005-05-01), Tso et al.
patent: 1 195 889 (2002-04-01), None
patent: 7-297682 (1995-11-01), None
Baumberger, Werner, “A Single-Chip Image Rejecting Receiver for the 2.44 GHz Band Using Commercial GaAs-MESFET-Technology”,IEEE, vol. 29, No. 10, Oct. 1994, pp. 1244-1249.
Asayama Sanae
Nakatsuji Koji
Sato Kazutoshi
Suzuki Masanori
Terao Atsuhito
Nguyen Simon
Wenderoth , Lind & Ponack, L.L.P.
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