Patent ID: 7228110
Filing Date: 2007-06-05
Classification: H04B

Abstract:
1. A wireless communication apparatus that communicates in a wireless LAN with use of time division duplex, comprising: a modulation/demodulation circuit that, during transmission, modulates a baseband signal to an intermediate frequency signal, and, during reception, demodulates an intermediate frequency signal to a baseband signal; a mixer circuit that is connected to an intermediate frequency circuit and a high frequency circuit, and with use of a superheterodyne method, during transmission, raises the intermediate frequency signal to a high frequency signal, and during reception, lowers a high frequency signal to the intermediate frequency signal; the high frequency circuit of which, during transmission, an input is connected to a mixer circuit and an output is connected to an antenna circuit, and, during reception, the input is connected to the antenna circuit and the output is connected to the mixer circuit, and that, during transmission and reception, amplifies an input high frequency signal and outputs a resultant amplified signal; and an antenna circuit that emits and receives carrier waves.