Hybrid transformer based on the integrated duplexer for multiband / multimode radio frequency (RF) front-end

摘要

Integrated duplexer based on the electric balance is described. Duplexer module includes a hybrid transformer. Hybrid transformer includes a primary coil and a secondary coil. The primary coil is coupled between the output of the power amplifier and the antenna. The secondary coil has an input of the low noise amplifier is coupled between the ground. The duplexer also includes a balanced impedance is coupled between the primary and secondary coils.