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Substrate Integrated Waveguide Leaky-Wave Antenna with Wide Bandwidth via Prism Coupling
Publikationstyp
Journal Article
Publikationsdatum
2018-06
Sprache
English
Institut
TORE-URI
Volume
66
Issue
6
Start Page
3110
End Page
3118
Citation
IEEE Transactions on Microwave Theory and Techniques 6 (66): 3110-3118 (2018-06)
Publisher DOI
Scopus ID
2-s2.0-85045180628
New communications systems require high-speed data transfer and need high frequency, wideband, and directive antennas. Leaky-wave antennas are a desirable type of antennas for millimeter and submillimeter waves, since they can produce a high directive radiation with a single feeding. The latter is an enormous advantage to reducing the cost and losses at high frequency. Despite these advantages, their dispersive nature inherently produces a beam squint effect in their radiation patterns. Here, we propose the use of a lens that compensates for the dispersion of the leaky wave, making the overall antenna broadband. This concept is demonstrated in substrate integrated waveguide technology at Ka-band, and the lens is integrated in the same technology. Full-wave simulations and experimental results are presented to demonstrate the potential of our proposal. Our manufactured prototype has more than 20% frequency bandwidth for the 3-dB pattern at 31 , and the main radiating direction steers only ±0.5° from 35 to 40 GHz with a half-power beamwidth of 8°.