US 12,470,192 B2
Reconfigurable filters in multiplexer
JeaShik Shin, Hwaseong-si (KR); Hyeonhyeong Choe, Seoul (KR); and Jeesu Kim, San Ramon, CA (US)
Assigned to Avago Technologies International Sales Pte. Limited, Singapore (SG)
Filed by Avago Technologies International Sales Pte. Limited, Singapore (SG)
Filed on Oct. 30, 2023, as Appl. No. 18/498,004.
Prior Publication US 2025/0141421 A1, May 1, 2025
Int. Cl. H03H 7/01 (2006.01); H03H 9/02 (2006.01)
CPC H03H 7/0161 (2013.01) [H03H 9/02015 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A filter device for multi-band wireless communication comprising:
a first circuit characterized by a first pass-band from a first frequency to a second frequency, the second frequency being greater than the first frequency;
a second circuit characterized by a second pass-band from a frequency no smaller than the first frequency to a third frequency, the third frequency being no higher than the second frequency but higher than the first frequency;
a third circuit characterized by a third pass-band from a fourth frequency to a frequency no greater than the second frequency, the fourth frequency being no smaller than the first frequency but smaller than the second frequency; and
a switch being configured to connect the first circuit either to the second circuit to reconfigure a first filter with the second pass-band or to the third circuit to reconfigure a second filter with the third pass-band, wherein at least one of the second pass-band and the third pass-band is narrower than the first pass-band.