Abstract
Asymmetric Substrate Integrated Waveguide Leaky Wave Antenna with Open Stop Band Suppression and Radiation Efficiency Equalization through Broadside
Highlights
With increasing applications in the areas of broadband wireless communication and radar, planar periodic structures are receiving renewed interests
A planar asymmetric Substrate integrated waveguides (SIW) Leaky wave antennas (LWA) is proposed for the Ku band capable of continuous beam scanning with total open stop band (OSB) closure and radiation efficiency equalization
Two structures; single and double slot are designed for the discussion of reflection cancellation (RC) technique and mitigation of OSB in double slot design is presented
Summary
With increasing applications in the areas of broadband wireless communication and radar, planar periodic structures are receiving renewed interests. A planar SIW based LWA is proposed for the suppression of OSB using the impedance matching technique [19], [20]. The work is different from that of the planar SIW LWA as this study uses the RC technique and the asymmetric technique for complete OSB suppression and radiation efficiency equalization through broadside for the planar SIW LWA [19], [20]. The mitigation of OSB using RC technique has been discussed and validated with the help of single and double slot designs of SIW LWAs. Secondly, the asymmetric design is developed for complete OSB suppression and radiation efficiency equalization through broadside with seamless beam scanning from backward to forward direction (–32° to +27°) achieving consistent gain ~12.5 dBi for 11 unit cells.
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