US 12,273,131 B2
RF system and electronic device
Xianlong Chen, Guangdong (CN)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong (CN)
Filed on Jul. 21, 2022, as Appl. No. 17/814,027.
Application 17/814,027 is a continuation of application No. PCT/CN2020/133122, filed on Dec. 1, 2020.
Claims priority of application No. 202010074934.5 (CN), filed on Jan. 22, 2020.
Prior Publication US 2022/0368357 A1, Nov. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 12/00 (2006.01); H04B 1/00 (2006.01); H04B 1/44 (2006.01); H04B 7/0404 (2017.01); H04L 5/14 (2006.01)
CPC H04B 1/0064 (2013.01) [H04B 1/44 (2013.01); H04B 7/0404 (2013.01); H04L 5/1461 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radio frequency (RF) system, comprising:
an RF transceiver, an RF processing circuit, a transfer switch module, a first antenna, a second antenna, a third antenna, and a fourth antenna;
wherein the RF transceiver being coupled with the RF processing circuit;
wherein the first antenna and the second antenna being coupled with the transfer switch module, the third antenna being coupled with the transfer switch module or the RF processing circuit, the fourth antenna being directly coupled with the RF processing circuit, the first antenna and the second antenna each having a higher antenna efficiency than the third antenna and the fourth antenna;
wherein the RF processing circuit comprising a first transmit (TX) module, a second TX module, a first receive (RX) module, a second RX module, a first duplexer, a second duplexer, a first multiplexer, and a first filtering module;
wherein the first TX module having a first TX port that is coupled with the transfer switch module via the first duplexer, the first TX module having a second TX port that is coupled with the transfer switch module via the first multiplexer and the second duplexer, and the first TX module is configured to switch a connection between the first antenna and the second antenna via the transfer switch module to be coupled with one of the first antenna and the second antenna via the transfer switch module;
wherein the second TX module having a first TX port that is directly coupled with the transfer switch module, the second TX module having a second TX port that is coupled with the transfer switch module via the first multiplexer and the second duplexer, and the second TX module is configured to switch a connection between the first antenna and the second antenna via the transfer switch module to be coupled with another one of the first antenna and the second antenna via the transfer switch module;
wherein the first RX module having a first RX port that is coupled with the transfer switch module via the first duplexer, the first RX module having a second RX port that is coupled with the transfer switch module via the second duplexer, and the first RX module having a third RX port that is coupled with the transfer switch module via the second TX module;
wherein the second RX module having a first RX port that is coupled with the first filtering module; and the second RX module having a second RX port that is coupled with the transfer switch module or a selective filtering module that is coupled with the third antenna; and
wherein when the RF system works in a non-standalone (NSA) mode, the first antenna being configured for TX of a first low band (LB) and primary receive (PRX) of the first LB, the second antenna being configured for TX of a second LB and PRX of the second LB, the third antenna being configured for diversity receive (DRX) of the second LB, the fourth antenna being configured for DRX of the first LB, and the first filtering module being configured to filter a band other than the first LB.