US 12,081,258 B2
RF front-end with filter-based interface to multi-feed antenna
David Richard Pehlke, Westlake Village, CA (US)
Assigned to SKYWORKS SOLUTIONS, INC., Irvine, CA (US)
Filed by SKYWORKS SOLUTIONS, INC., Irvine, CA (US)
Filed on Jun. 25, 2020, as Appl. No. 16/911,726.
Claims priority of provisional application 62/899,239, filed on Sep. 12, 2019.
Claims priority of provisional application 62/867,474, filed on Jun. 27, 2019.
Prior Publication US 2020/0412403 A1, Dec. 31, 2020
Int. Cl. H04B 1/48 (2006.01); H04L 5/14 (2006.01)
CPC H04B 1/48 (2013.01) [H04L 5/14 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A front-end module comprising:
a multi-feed antenna;
a filtering module including a first bandpass filter device and a second bandpass filter device, the first bandpass filter device including a first transmit filter having a first transmit passband and a first receive filter having a first receive passband, the second bandpass filter device including a second transmit filter having a second transmit passband different from the first transmit passband and a second receive filter having a second receive passband different from the first receive passband;
a first dedicated antenna feed path providing a direct connection between the first bandpass filter device and the multi-feed antenna, with no switches disposed in the first dedicated antenna feed path between the first bandpass filter device and the multi-feed antenna; and
a second dedicated antenna feed path providing a direct connection between the second bandpass filter device and the multi-feed antenna, with no switches disposed in the second dedicated antenna feed path between the second bandpass filter device and the multi-feed antenna, no portion of the first dedicated antenna feed path being shared with the second dedicated antenna feed path.