Patent ID: 6795690
Filing Date: 2004-09-21
Classification: H04B

Abstract:
A duplex radio transceiver, coupled to baseband circuitry and to an antenna, which comprises:a receive chain, which receives and processes radio signals in a receive frequency band and conveys the processed signals to the baseband circuitry, the chain comprising one or more amplifiers and one or more filter components; a transmit chain, which generates radio signals for transmission in a transmit frequency band, the chain comprising one or more amplifiers and one or more filter components, which attenuate signals originating from the transmit chain in the receive frequency band by a first stop-band attenuation; and a duplexer, which couples the transmit chain and the receive chain to the antenna, and which attenuates signals originating from the transmit chain in the receive frequency band by a second stop-band attenuation, which is approximately equal to or less than the first stop-band attenuation.