Open AccessBroadband RF front-end using microwave photonics filter
Author(s) -
Jingjing Wang,
Minghua Chen,
Yunhua Liang,
Hongwei Chen,
Sigang Yang,
Shizhong Xie
Publication year - 2015
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.000839
Subject(s) - broadband , bandwidth (computing) , radio frequency , center frequency , optics , rf front end , photonics , microwave , true time delay , band pass filter , front and back ends , optical filter , materials science , physics , telecommunications , computer science , phased array , antenna (radio) , operating system
We propose and demonstrate a novel RF front-end with broadened processing bandwidth, where a tunable microwave photonic filter based on optical frequency comb (OFC) is incorporated to accomplish simultaneous down-conversion and filtering. By designing additional phase shaping and time delay controlling, the frequency tunability of the system could be enhanced. More importantly, the beating interferences generated from broadband RF input could also be suppressed, which help to break the limitation on the processing bandwidth. In our experiments, a photonics RF receiver front-end for RF input with wide bandwidth of almost 20 GHz was realized using 10-GHz-space OFC, where the center frequency of the pass band signals could be tuned continuously.