Filterless broadband front-end isolator

摘要

Representative implementations of devices and techniques provide isolation between transmit and receive portions of a broadband transceiver of a wireless communication system. filterless isolation technique is performed via a directional Phase shifting arrangement that includes an isolating hybrid device coupled to a non-reciprocal phase shifting combiner/splitter.

主权项

1. An apparatus, comprising:
a hybrid device including:
a first port arranged to receive a transmit signal of a transmit component;a second port arranged to output a receive signal to an input of a receive component, the first port isolated from the second port; andthird and fourth ports coupled to an antenna via a non-reciprocal phase shifter, and arranged to output the received transmit signal to the antenna and to receive the receive signal from the antenna; and a non-reciprocal phase shifter coupled to the antenna at a first terminal and coupled to the third and fourth ports of the hybrid device at second and third terminals, respectively, and arranged to cause a phase change to a signal passing through the non-reciprocal phase shifter in one direction, but not cause a phase change to a signal passing through the non-reciprocal phase shifter in another direction.