A DUPLEXER, COMBINER AND DISTRIBUTION AMPLIFIER FOR WIRELESS APPLICATIONS

摘要

Today's wireless base stations operate in a duplex mode and require a duplexer at the antenna to provide low insertion loss and high power capabilities in the transmit mode and low noise amplification and steep attenuation close to the passband in the receive mode. A new duplexer assembly has been developed that is aimed at these stringent requirements and makes use of the considerable performance advantage of high Q ceramic resonators. The model 80163 duplex-er/combiner/receive distribution amplifier (RXDA) is designed for 900 MHz wireless data two- or four-channel operation. The two-channel system comprises the company's models 80212 duplexer, 80189-937 combiners, 80119-2 power divider and 80251 low noise amplifier (LNA). The integrated subsystem is capable of expanding from two-channel to four-channel operation with the appropriate changes in internal components and contains duplex filtering that has been optimized for hostile RF environments.