Communication apparatus and communication method

Details Communication apparatus and communication method Communication apparatus and communication method

2006-06-06

2006-06-06

Vo, Nguyen T. (Department: 2685)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S126000, C455S127200, C455S522000

Reexamination Certificate

active

07058425

ABSTRACT:
Baseband signal generator107outputs a transmission baseband signal with a coefficient for setting antenna directivity multiplied and a gain control signal to transmit power amplifier114and transmit power amplifier114amplifies the transmission baseband signal with a gain corresponding to the gain control signal and transmits the signal from antenna102. ATT118attenuates the output signal of amplifier114according to the gain control signal, amplitude/phase comparator110calculates amplitude and phase errors between the attenuated signal with a frequency equalized by frequency conversion sections120and121and the input signal of amplifier114and phase/amplitude correction section108corrects the transmission baseband signal and gain control signal so as to eliminate the errors. This makes it possible to correct the amplitude and phase shifts of the transmission signal during a communication with other apparatuses and reduce the size and cost of the apparatus.

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