Open AccessPhotonics‐based de‐chirp processor with the capability of processing dual‐band signals
Author(s) -
Liu Jiang,
Zhu Dan,
Chen Wenjuan,
Pan Shilong
Publication year - 2021
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/ell2.12172
Subject(s) - chirp , photonics , waveform , crosstalk , electronic engineering , computer science , signal processing , multi band device , chirp spread spectrum , optics , physics , engineering , telecommunications , digital signal processing , spread spectrum , radar , laser , code division multiple access , antenna (radio) , direct sequence spread spectrum
Abstract A photonics‐based de‐chirp processor with the capability of processing dual‐band linearly frequency‐modulated (LFM) waveforms is proposed and demonstrated. Two de‐chirped signals will be output simultaneously and independently, while no special requirement of the input signals' chirp rates is needed. A proof‐of‐concept experiment is carried out. De‐chirp processing of dual‐band signals (X‐ and Ku‐band) is successfully implemented. The crosstalk suppression ratio of more than 40 dB is achieved with de‐chirped results in the two bands.