Patent ID: 8638819

Claim:
A wireless communication transceiver comprising: a first band transmission path for modulating data to be sent into a radio frequency signal of said first band; a first band reception path for demodulating a received radio frequency signal of said first band into received data; a second band transmission path for modulating data to be sent into a radio frequency signal of a second band different from said first band; a second band reception path for demodulating a received radio frequency signal of said second band into received data; a path switch; and a control unit, wherein in a dual band time division duplexing mode, said control unit controls said path switch in a dual band time division duplexing mode (i) so that said path switch forms a first band reception path that connects a received radio frequency signal from an antenna to a first oscillating unit, and at the same time forms a second band transmission path that connects a transmitted radio frequency signal from a second oscillating unit to said antenna in an odd cycle or in an even cycle; and (ii) so that said path switch forms a second band reception path that connects a received radio frequency signal from said antenna to said second oscillating unit, and at the same time forms a first band transmission path that connects a transmitted radio frequency signal from said first oscillating unit to said antenna in another odd cycle or another even cycle.