Architecture for a receiver front end having dual output low noise amplifier driving separate pre-selectors coupled to a transformer for single ended output

摘要

An architecture for a receiver front end utilizes a dual output low noise amplifier ( 102 ) driving separate, fixed preselectors ( 104, 106 ) coupled to a transformer ( 108 ) to generate a single ended output ( 113 ). A pair of blocks coupled in series provides a dual band output. Additional pairs of blocks ( 201, 203 ) can be cascaded in parallel to provide additional frequency bands of operation. The front end architecture of the present invention provides switchless multi-band operation to a communication device.