Articles | Volume 17
Adv. Radio Sci., 17, 71–75, 2019
https://doi.org/10.5194/ars-17-71-2019
Adv. Radio Sci., 17, 71–75, 2019
https://doi.org/10.5194/ars-17-71-2019
 
19 Sep 2019
19 Sep 2019

Design of leaky-wave antennas with transverse slots for end-fire radiation with optimized radiation efficiency

Thomas Vaupel and Claudius Löcker

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Short summary
A substrate integrated waveguide (SIW) replacing a costly rectangular waveguide is used with transverse slots edged in the top cover of the SIW as effective leaky-wave antenna with radiation direction parallel to the antenna (end-fire) until to 60 degree upwards by frequency scanning. The efficiency is optimized by a procedure leading to a 99 per cent efficiency at end-fire. With special feeding and power dividing circuits, a two-branch antenna could be designed with a further improved gain.