US 12,267,099 B2
Dynamic radio frequency loading change mitigation
David Francis Berdy, San Diego, CA (US); Jin Cho, San Diego, CA (US); Yu Steve Zhao, San Diego, CA (US); Christian Holenstein, La Mesa, CA (US); Ryan Scott Castro Spring, San Diego, CA (US); Jose Cabanillas, San Diego, CA (US); and Euichan Moon, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Mar. 17, 2022, as Appl. No. 17/655,351.
Prior Publication US 2023/0299808 A1, Sep. 21, 2023
Int. Cl. H04B 1/40 (2015.01); H03H 1/00 (2006.01)
CPC H04B 1/40 (2013.01) [H03H 1/0007 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A system, comprising:
a first filter;
a second filter;
a third filter;
a switching circuit having a first terminal, a second terminal, a third terminal, a fourth terminal, a fifth terminal, a first switch coupled between the first terminal and the third terminal, a second switch coupled between the fifth terminal and the third terminal, a third switch coupled between the second terminal and the third terminal, and a fourth switch coupled between the second terminal and the fourth terminal, wherein:
the first terminal is coupled to the first filter, the second terminal is coupled to the second filter, the third terminal is coupled to a first antenna, the fourth terminal is coupled to a second antenna, and the fifth terminal is coupled to the third filter;
in a first switch configuration, the switching circuit is configured to couple the first terminal to the third terminal, and couple the second terminal to the third terminal; and
in a second switch configuration, the switching circuit is configured to couple the first terminal to the third terminal, couple the second terminal to the fourth terminal, and couple the fifth terminal to the third terminal; and
a switch controller, wherein the switch controller is configured to:
in the first switch configuration, turn on the first switch and the third switch, and turn off the second switch and the fourth switch; and
in the second switch configuration, turn on the first switch, the second switch, and the fourth switch, and turn off the third switch.