Open AccessImpact of wideband interference coupling path dispersion on performance of radio‐frequency interference adaptive cancellation system
Author(s) -
Qin Huanding,
He Fangmin,
Meng Jin,
Lu Qiaran,
Zhao Zhihua
Publication year - 2020
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2019.0682
Subject(s) - wideband , single antenna interference cancellation , bandwidth (computing) , interference (communication) , dispersion (optics) , electronic engineering , coupling (piping) , electromagnetic interference , physics , computer science , telecommunications , optics , engineering , mechanical engineering , channel (broadcasting) , decoding methods
As the interference bandwidth increases, the impact of interference coupling path dispersion on the cancellation performance can no longer be ignored in open space. Especially for the radio frequency interference adaptive cancellation system (RFIACS), the impact will be more serious. In response to this problem, this study establishes the time‐domain model of a wideband RFIACS considering interference coupling path dispersion characteristics, and analyses the stability, convergence speed, interference cancellation ratio (ICR), and cancellation bandwidth of RFIACS considering dispersion characteristics. And the authors define the speed factor to characterise the convergence speed. The analysis shows that the dispersion of the interference coupling path will not affect the stability of the system, but will reduce the convergence speed and ICR. The larger the interference coupling path dispersion, the lower the convergence speed, and the larger the cancellation bandwidth, the lower the ICR. The experimental results verify the theoretical analysis.