RF receiving apparatus and method using DC offset free...

Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion

Reexamination Certificate

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Details

C455S295000, C455S296000, C455S323000

Reexamination Certificate

active

07835716

ABSTRACT:
An RF receiver and an RF receiving method are provided using a baseband signal in which a DC offset is removed. In the RF receiver, a noise phase removing unit generates a phase controlled local signal PLOQ in which a phase of a Q signal of a local signal LOQ is controlled, by synthesizing a received RF signal RXIN and the Q signal of the local signal LOQ. A down converter generates a signal in which a DC offset from noise introduced into the received RF signal RXIN is removed, when synthesizing the received RF signal RXIN and the phase controlled local signal PLOQ for frequency-down conversion.

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patent: 6442383 (2002-08-01), Iemura
patent: 2003/0007450 (2003-01-01), Ohtaki
patent: 2003/0054788 (2003-03-01), Sugar et al.
patent: 2005/0107051 (2005-05-01), Aparin et al.
patent: 2005/0207509 (2005-09-01), Saunders et al.
patent: 10317600 (2004-11-01), None
patent: 2006/037241 (2006-04-01), None

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