Abstract
A dielectric image line (DIL)-based leaky wave antenna (LWA) with H-shaped grooves is proposed in this paper. By periodically carving a set of H-shaped grooves in the ground of the DIL, infinite space harmonics are excited, and the proposed antenna works with n = −1 order mode. The H-shaped radiator can effectively eliminate open stopband (OSB). Over the operating band from 11.1 GHz to 15 GHz, the beam of the proposed antenna scans widely from −72° to 31° (including the broadside) with the realized gain from 9.7 dBi to 12.9 dBi. A prototype is fabricated and measured, which testifies the design theory and the simulation results.
Original language | English |
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Pages (from-to) | 2608-2613 |
Number of pages | 6 |
Journal | Microwave and Optical Technology Letters |
Volume | 60 |
Issue number | 11 |
DOIs | |
State | Published - Nov 2018 |
Keywords
- dielectric image line
- H-shaped groove
- leaky wave antenna
- open stopband
- wide scanning angle