SAW Duplexers Offered in Semiconductor-Style Plastic Packages

Crystal manufactur-er NDK (Nihon Dempa Kogyo Co., Ltd.) announces the availability of a series of SAW duplexers, which are key components in US-CDMA and UMTS phones. They are used to separate the data that is simultaneously sent and received by the phone into two different frequencies. Model WX807C is for US-CDMA applications with a nominal frequency of 881.5 MHz in the RX-band (receive) and 836.5 MHz in the TX-band (transmit). Model WX910A is for MTS applications with a nominal frequency of 2140 MHz in the RX-band (receive) and 1950 MHz in the TX-band (transmit).