Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-08-23
2005-08-23
Ramakrishnaiah, Melur (Department: 2643)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S424000, C455S067110
Reexamination Certificate
active
06934541
ABSTRACT:
A communication device for transmitting and/or receiving signals by using a communication antenna includes signal characteristic information detection means for detecting information regarding signal characteristics of a calibration signal which are contained in a signal received by the communication antenna, calibration means for calibrating a communication antenna chain based on the detected signal characteristic information, and cancellation signal generating means for generating a cancellation signal corresponding to a calibration signal contained in the signal received by the communication antenna based on the calibration signal. The device also includes signal cancellation-by-subtraction means for subtracting the generated cancellation signal from the signal received by the communication antenna, and receive signal processing means for processing the received signal that is diminished by the cancellation signal.
REFERENCES:
patent: 2342505 (2000-04-01), None
Hitachi Kokusai Electric Inc.
Ramakrishnaiah Melur
Wenderoth , Lind & Ponack, L.L.P.
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