Miniaturization of Ultrawideband Combined TEM-Horn Loop Antenna for Use at HF Band

Yen, Songyi; Elmansouri, Mohamed A.; Filipović, Dejan S.

doi:10.1109/ap-s/usnc-ursi47032.2022.9886825

Cited by 3 publications

(1 citation statement)

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“…The radiation efficiency is enhanced in the electrically small regime by expanding the loop to follow the surface of the minimum enclosing sphere. The antenna was simulated in Yen et al 11 whereas additional studies, fabrication, and measurements are discussed here. Good agreement between measurements and simulations validates the proposed concept.…”

Section: Introductionmentioning

confidence: 99%

Ultra‐wideband directional electrically small antenna for UHF through C‐band 5G and beyond 5G applications

Yen

Boskovic

Elmansouri

et al. 2023

Micro & Optical Tech Letters

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A semi‐spherical combined transverse electromagnetic (TEM) horn and loop antenna is designed for directional ultra‐wideband operation from 0.42 to 6 GHz for 5G and beyond 5G applications across military and commercial sectors. The antenna structure fits within a sphere with 3‐cm radius, thus operating as electrically small over the lower part of the band (ka = 0.5 at 0.795 GHz and ka = 1 at 1.59 GHz). To spread the currents across the volume while maintaining the required relationship between the lowest order TE and TM modes, the loop section is modified to conform with the enclosing minimum sphere. The TEM horn, bowtie, and resistive loading are then tuned to achieve improvement over the conventional topology in the radiation efficiency by >7% when ka = 0.5 and >22% when ka = 1.

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Section: Introductionmentioning

confidence: 99%