Open AccessCombined L–S‐bands antenna module
Author(s) -
Ivanchenko Igor,
Khruslov Maksym,
Popenko Nina,
Rönnow Daniel
Publication year - 2019
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.2018.5130
Subject(s) - antenna (radio) , antenna measurement , optics , acoustics , directional antenna , physics , harmonics , electrical engineering , telecommunications , computer science , engineering , voltage
A combined L–S‐band antenna module consists of four rectangular patch antennas, two of which operate at the frequencies of the first harmonics (L‐band), and two others at the frequencies of the second harmonics (S‐band). The module is intended for use in super heterodyne signal reception circuits, for example in studying the various non‐linear phenomena. The results of this study are presented in terms of improving the performance of each antenna and minimising their mutual influence. The resonance frequencies of the L‐band antenna differ by 50 MHz. All the antennas radiate close to the zenith and their beamwidths in two principal planes are virtually the same. At the resonance frequencies, the reflection coefficient is S 11 < −30 dB for the transmitting antenna, and S 11 < −20 dB for the receiving antenna. The minimum allowable distance between the antennas is determined, at which their mutual influence can be neglected ( S 12 < −50 dB).