Telecommunications – Receiver or analog modulated signal frequency converter – Noise or interference elimination
Reexamination Certificate
2006-12-07
2009-08-11
Nguyen, Tony T (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Noise or interference elimination
C455S403000, C455S414100, C455S226100
Reexamination Certificate
active
07574188
ABSTRACT:
An apparatus and method for removing a jammer signal in a wireless communication receiver, in which a frequency converter down-converts a radio frequency (RF) signal including a desired and a jammer signal into a baseband signal. A first filter removes the desired signal from an output signal of the frequency converter and outputs a jammer signal as an output signal. The frequency converter up-converts the jammers signal output from the first filter. The second filter outputs the up-converted jammer signal as an output signal. The first adder receives the RF signal and the output signal of the second filter and removes the jammer signal from the RF signal using the RF signal and the output signal of the second filter. Accordingly, the frequency converter down-converts the RF signal including the attended jammer signal.
REFERENCES:
patent: 2004/0203458 (2004-10-01), Nigra
patent: 1033851 (2000-09-01), None
patent: 1999-0082655 (1999-11-01), None
F. Chau & Assoc. LLC
Nguyen Tony T
Samsung Electronics Co,. Ltd.
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