US 12,463,668 B2
Front end architecture for selectively adding external carrier aggregation band
Jen-Chien Chang, Irvine, CA (US); Reza Kasnavi, Solana Beach, CA (US); Roman Zbigniew Arkiszewski, Oak Ridge, NC (US); Jeffrey Gordon Strahler, Greensboro, NC (US); and John G. Freed, Raleigh, NC (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Apr. 1, 2024, as Appl. No. 18/623,746.
Application 18/623,746 is a continuation of application No. 17/197,769, filed on Mar. 10, 2021, granted, now 11,973,522.
Application 17/197,769 is a continuation of application No. 16/217,659, filed on Dec. 12, 2018, granted, now 10,979,088, issued on Apr. 13, 2021.
Claims priority of provisional application 62/599,576, filed on Dec. 15, 2017.
Prior Publication US 2024/0291507 A1, Aug. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 7/26 (2006.01); H04B 1/00 (2006.01); H04L 5/14 (2006.01); H04Q 11/02 (2006.01)
CPC H04B 1/0057 (2013.01) [H04B 7/2621 (2013.01); H04L 5/14 (2013.01); H04Q 11/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radio frequency system comprising:
a radio frequency signal path configured to provide a radio frequency signal;
a frequency domain multiplexer;
an antenna path; and
a switch including two poles and a plurality of throws, the switch configured to connect the radio frequency signal path to the antenna path through the frequency domain multiplexer in a first mode such that the radio frequency signal propagates (i) from the radio frequency signal path to the frequency domain multiplexer through the switch and (ii) from the frequency domain multiplexer to the antenna path through the switch in the first mode, and the switch configured to connect the radio frequency signal path to the antenna path and bypass the frequency domain multiplexer in a second mode.