Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Reexamination Certificate
2006-11-07
2006-11-07
Urban, Edward F. (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
C455S303000
Reexamination Certificate
active
07133657
ABSTRACT:
The present invention is directed to a channel calibrator and a method of calibrating in-phase and quadrature phase channels for use with a quadrature mixing receiver. In one embodiment, the channel calibrator includes a balancer and an equalizer. The balancer reduces frequency dependent imbalance between an in-phase channel and a quadrature phase channel associated with the receiver. The equalizer decreases frequency independent mismatch between the in-phase channel and the quadrature phase channel.
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Kuenen Jeroen C.
Tao Xiao-Jiao
Agere Systems Inc.
Jackson Blane J.
LandOfFree
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