Radiation and scattering responses of waveguide antenna array with MEMS
enabled reconfigurable frequency selective structure in aperture
A. I. Semenikhin., D. V. Semenikhina,
Yu. V.
Yukhanov
South Federal University
The paper is received on November 27, 2015
Abstract.
Effect
of the reconfigurable frequency selective structure (FSS) with capacitive
MEMS-switches on characteristics of matching, radiation and scattering of the
antenna array (AA) of the open ends of rectangular waveguides is investigated. It
is shown that FSS transmits a radiation field of AA in case of switching on
MEMS (in a band of 8 – 12 GHz). The best matching of AA is
provided if the FSS is in close proximity to an aperture. Switching off MEMS
weakens amplitude of the wave transmitting through FSS until 35 dB at
resonance frequency of 9 GHz; resonance frequency of AA-FSS system depends
on distance between the FSS and the AA aperture. Difference of RCS of back
scattering of phased AA on working linear polarization in two states of
MEMS-switches can make more than 10 – 15 dB.
Key words: frequency selective surface, microelectromechanical RF
switches, reconfigurable
FSS, waveguide antenna array.