Abstract
A 2 × 2 planar slot antenna array is designed at 60 GHz. The slots are fed by a printed feeding network based on the ridge gap waveguide (RGW) technology. Such a feeding network requires the slots to be more than a full wavelength apart, which causes excitation of undesired grating lobes. In order to reduce the grating lobes level, a low-cost dielectric superstrate at a distance of half wavelength in the air above the slot antenna array is used. The presence of the superstrate acts as a planar lens that increases the slot array gain by 7 dB along the broadside direction as well as greatly reduces the grating lobes level. The single element and the array characteristics are provided.
| Original language | English |
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| Title of host publication | 2015 9th European Conference on Antennas and Propagation, EuCAP 2015 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9788890701856 |
| State | Published - 27 Aug 2015 |
| Externally published | Yes |
Publication series
| Name | 2015 9th European Conference on Antennas and Propagation, EuCAP 2015 |
|---|
Bibliographical note
Publisher Copyright:© 2015 EurAAP.
Keywords
- gap waveguide
- slot array
- superstrate
ASJC Scopus subject areas
- Instrumentation
- Radiation
- Computer Networks and Communications