US 12,261,635 B2
Filter reuse in radio frequency front-ends
Lup Meng Loh, Plano, TX (US); Aleksey A. Lyalin, Moorpark, CA (US); David Richard Pehlke, Westlake Village, CA (US); Anand Raghavan, Middleton, WI (US); and Jin Hoon Cho, Newbury Park, CA (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Apr. 27, 2023, as Appl. No. 18/308,060.
Application 18/308,060 is a continuation of application No. 17/445,924, filed on Aug. 25, 2021, granted, now 11,671,122.
Claims priority of provisional application 62/706,581, filed on Aug. 26, 2020.
Prior Publication US 2023/0344452 A1, Oct. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 1/00 (2006.01); H04B 1/04 (2006.01)
CPC H04B 1/0078 (2013.01) [H04B 1/0458 (2013.01); H04B 2001/0408 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radio frequency front-end system with filter reuse, the radio frequency front-end system comprising:
a filter reuse switch having a plurality of states including a first state, a second state, and a third state;
a first bandpass filter of a first frequency band coupled to the filter reuse switch;
a second bandpass filter of a second frequency band coupled to the filter reuse switch;
a low noise amplifier configured to receive a radio frequency receive signal through the first bandpass filter and the filter reuse switch in the first state; and
a power amplifier operable over the first frequency band and the second frequency band, the power amplifier configured to output a first amplified radio frequency transmit signal through the filter reuse switch and the first bandpass filter in the second state, and to output a second amplified radio frequency transmit signal through the filter reuse switch and the second bandpass filter in the third state.