US 12,451,906 B2
Radio frequency unit, antenna, and signal processing method
Xianghua Li, Shanghai (CN); Zhongming Qin, Shanghai (CN); Xin Yu, Shenzhen (CN); Guanxi Zhang, Shanghai (CN); and Jianping Zhao, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on May 24, 2023, as Appl. No. 18/323,000.
Application 18/323,000 is a continuation of application No. PCT/CN2021/133033, filed on Nov. 25, 2021.
Claims priority of application No. 202011347343.7 (CN), filed on Nov. 26, 2020.
Prior Publication US 2023/0299797 A1, Sep. 21, 2023
Int. Cl. H04B 1/52 (2015.01); H04B 1/00 (2006.01)
CPC H04B 1/0057 (2013.01) [H04B 1/0003 (2013.01); H04B 1/0096 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radio frequency unit, comprising:
a multiplexer;
a low noise amplifier;
a radio frequency analog-to-digital converter; and
a digital intermediate frequency module, wherein
the multiplexer comprises N filters, wherein N is an integer greater than 1;
the multiplexer is configured to filter an uplink signal from an antenna in a downlink slot to obtain a filtered uplink signal, wherein the uplink signal comprises signals of N frequency bands;
the low noise amplifier is configured to amplify the filtered uplink signal to obtain an amplified filtered uplink signal;
the radio frequency analog-to-digital converter is configured to convert the amplified filtered uplink signal into a first digital intermediate frequency signal; and
the digital intermediate frequency module is configured to process the first digital intermediate frequency signal.