US 12,244,546 B2
Full-duplex electrical balanced duplexer
Joonhoi Hur, Sunnyvale, CA (US); Harald Pretl, Schwertberg (AT); and Rastislav Vazny, Sunnyvale, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Sep. 19, 2022, as Appl. No. 17/947,813.
Application 17/947,813 is a continuation of application No. 17/031,440, filed on Sep. 24, 2020, granted, now 11,791,973.
Prior Publication US 2023/0011044 A1, Jan. 12, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 1/525 (2015.01); H01P 1/36 (2006.01); H01Q 3/36 (2006.01); H03H 7/00 (2006.01); H04B 1/44 (2006.01); H04L 5/14 (2006.01); H04L 27/20 (2006.01); H04L 27/22 (2006.01)
CPC H04L 5/1461 (2013.01) [H04L 27/20 (2013.01); H04L 27/22 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electronic device comprising:
one or more antennas;
a first phase shifter disposed on a first signal path coupled to the one or more antennas;
a second phase shifter disposed on the first signal path;
a balun coupling the first signal path and a second signal path;
transmitter circuitry coupled to the balun; and
receiver circuitry coupled to the balun opposite the transmitter circuitry and configured to receive a received signal via the one or more antennas, the first phase shifter configured to shift a first portion of the received signal by a first phase amount, and the second phase shifter configured to shift the first portion of the received signal from the first phase shifter by a second phase amount to constructively combine with a second portion of the received signal from the second signal path at the receiver circuitry via the balun, the first portion of the received signal being in-phase with the second portion of the received signal at the receiver circuitry, and the received signal being blocked from the transmitter circuitry via the balun.