Aperture-coupled microstrip patch antenna fed by orthogonal SIW line for millimetre-wave imaging applications

作者：Foudazi Ali^*; Roth Thomas E; Ghasr Mohammad T; Zoughi Reza

来源：IET Microwaves Antennas & Propagation, 2017, 11(6): 811-817.

DOI：10.1049/iet-map.2016.0370

• millimetre wave imaging
• aperture antennas
• microstrip antennas
• antenna feeds
• substrate integrated waveguides
• rectangular waveguides
• frequency 32 GHz
• gain 5
• 5 dB
• aperture-coupled microstrip patch antenna fed
• substrate integrated waveguide line
• orthogonal SIW line
• millimetrewave imaging
• microstrip patch antenna feeding technique
• rectangular microstrip patch antenna
• aperture-coupled rectangular patch antenna
• wideband synthetic aperture radar imaging

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 32GHz. Measurement and simulation results for rectangular patch antenna are presented showing good agreement with 9% bandwidth (|S-11|<-10dB). The aperture-coupled rectangular patch antenna provided 5.5dBi 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.

• 出版日期2017-5-12