TY - JOUR
T1 - Ultrawideband Efficient Channelized Receiver Based on Photonic-Assisted Acousto-Optic Frequency Shifters
AU - Zhai, Weile
AU - Zhang, Donglin
AU - Wang, Ruiqiong
AU - Wu, Yuanliang
AU - Liu, Long
AU - Zhong, Xirui
AU - Cui, Wanzhao
AU - Gao, Yongsheng
N1 - Publisher Copyright:
© 1963-2012 IEEE.
PY - 2025
Y1 - 2025
N2 - Radio frequency (RF) channelization is a critical technology for comprehensive signal reception and detection across various domains. However, digital channelized receivers encounter significant limitations when processing broadband signals exceeding 10 GHz due to the inherent processing constraints. Existing photonic-assisted channelized receivers are limited by inefficient optical frequency comb (OFC) utilization, where the channel count is confined to the number of comb lines and challenged by complex OFC generation and intrachannel crosstalk. In this work, an ultrawideband and high-efficiency RF signal channelization scheme based on a single OFC and acousto-optic frequency shifter (AOFS) is proposed and demonstrated. The RF channelization across 33 channels over the 0–33-GHz frequency range is experimentally validated using a single phase modulator (PM) for OFC generation, which significantly improves the OFC utilization and simplifies the system structure. In addition, the comparison of OFC utilization, the digital domain image suppression algorithm, and the channel number expansion in the proposed scheme is discussed. The innovative channelized receiver holds substantial promise for advanced applications in spectrum monitoring, electronic warfare, modern communications, and high-resolution radar systems.
AB - Radio frequency (RF) channelization is a critical technology for comprehensive signal reception and detection across various domains. However, digital channelized receivers encounter significant limitations when processing broadband signals exceeding 10 GHz due to the inherent processing constraints. Existing photonic-assisted channelized receivers are limited by inefficient optical frequency comb (OFC) utilization, where the channel count is confined to the number of comb lines and challenged by complex OFC generation and intrachannel crosstalk. In this work, an ultrawideband and high-efficiency RF signal channelization scheme based on a single OFC and acousto-optic frequency shifter (AOFS) is proposed and demonstrated. The RF channelization across 33 channels over the 0–33-GHz frequency range is experimentally validated using a single phase modulator (PM) for OFC generation, which significantly improves the OFC utilization and simplifies the system structure. In addition, the comparison of OFC utilization, the digital domain image suppression algorithm, and the channel number expansion in the proposed scheme is discussed. The innovative channelized receiver holds substantial promise for advanced applications in spectrum monitoring, electronic warfare, modern communications, and high-resolution radar systems.
KW - Acousto-optic frequency shifter (AOFS)
KW - channelization
KW - microwave photonic
KW - optical frequency comb (OFC)
UR - http://www.scopus.com/inward/record.url?scp=105002577674&partnerID=8YFLogxK
U2 - 10.1109/TMTT.2025.3553286
DO - 10.1109/TMTT.2025.3553286
M3 - 文章
AN - SCOPUS:105002577674
SN - 0018-9480
JO - IEEE Transactions on Microwave Theory and Techniques
JF - IEEE Transactions on Microwave Theory and Techniques
ER -