Open AccessAperture‐coupled microstrip patch antenna fed by orthogonal SIW line for millimetre‐wave imaging applications
Author(s) -
Foudazi Ali,
Roth Thomas E.,
Ghasr Mohammad T.,
Zoughi Reza
Publication year - 2017
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.2016.0370
Subject(s) - patch antenna , microstrip antenna , optics , antenna factor , microstrip , coaxial antenna , antenna measurement , antenna aperture , antenna efficiency , antenna (radio) , acoustics , physics , radiation pattern , engineering , telecommunications
A new microstrip patch antenna feeding technique for millimetre‐wave imaging applications is proposed. The technique utilises a substrate integrated waveguide line that orthogonally feeds the patch antenna through a coupling aperture. A rectangular microstrip patch antenna was designed to operate at 32 GHz. Measurement and simulation results for rectangular patch antenna are presented showing good agreement with 9% bandwidth (| S 11 | < −10 dB). The aperture‐coupled rectangular patch antenna provided 5.5 dBi gain and 72% efficiency at the design frequency. Finally, the rectangular patch antenna is used for near‐field and wideband synthetic aperture radar imaging to demonstrate the potential of the proposed antenna for imaging applications at millimetre wave frequencies.