Open AccessW band axially displaced monopulse dual‐reflector antenna for inter‐satellite communications
Author(s) -
Wang Yanxun,
Dou Wenbin,
Bi Bo
Publication year - 2016
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.2015.0559
Subject(s) - cassegrain antenna , optics , periscope antenna , physics , hyperboloid , radiation pattern , offset dish antenna , antenna measurement , beam waveguide antenna , fan beam antenna , reflector (photography) , antenna (radio) , engineering , telecommunications , light source
An axially displaced monopulse dual‐reflector antenna operating at W band is proposed in this study. The antenna configuration consists of a hyperboloid as the subreflector, a combination of series of paraboloids with different focal length as the main reflector and a low‐loss sum‐and‐difference network, which is based on waveguide magic Ts and bent waveguides. Compared with traditional dual‐reflector antenna, axial size and weight of this novel antenna can be reduced to a certain extent. Measured results show that the gain is 40.1 dBi, the sidelobe is <−19.7 dB and the null‐depth is <−27.7 dB at the central frequency. The radiation patterns remain almost the same in the bandwidth. It is demonstrated that this antenna exhibits good radiation performances and is suitable for inter‐satellite systems.