Search International and National Patent Collections

1. (WO2018026455) RF FRONT END RESONANT MATCHING CIRCUIT

Pub. No.:    WO/2018/026455    International Application No.:    PCT/US2017/040474
Publication Date: Fri Feb 09 00:59:59 CET 2018 International Filing Date: Sat Jul 01 01:59:59 CEST 2017
IPC: H04B 1/04
Applicants: QUALCOMM INCORPORATED
Inventors: DING, Yongwang
WANG, Feipeng
PARK, Ji-Hoon
HUANG, Pingli
KOO, Yido
Title: RF FRONT END RESONANT MATCHING CIRCUIT
Abstract:
The disclosure provides a device for impedance matching and switching for coupling a transmit path and a receive path of a transceiver to at least one antenna. The device can have an on-chip matching circuitry disposed within a chip and off-chip matching circuitry disposed outside the chip but coupled to the on-chip matching circuitry. The device can have a controller coupled to the on-chip matching circuitry configured to switch the on-chip matching circuitry to provide matched impedance for the transmit path in a transmit mode and matched impedance for the receive path in a receive mode. The off-chip matching circuitry can provide high impedance in the receive path in the transmit mode and provide high impedance in the transmit path in the receive mode. The resonant matching circuit can also have an antenna node coupling the transmit path and the receive path to the at least one antenna.