High-Gain, Low-Profile, Integrable Planar Lens Antenna at 275 GHz

Terahertz communications require compact, high-gain antennas that can be integrated with sources, as alternative to traditional lenses, which have bulky sizes and lack design flexibility. This paper introduces a high-gain, low-profile silicon cavity antenna integrated with a WR-3 waveguide feed. The...

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Bibliographic Details
Published in2023 IEEE 11th Asia-Pacific Conference on Antennas and Propagation (APCAP) Vol. 1; pp. 1 - 2
Main Authors Li, Mingxiang Stephen, Ako, Rajour Tanyi, Sriram, Sharath, Fumeaux, Christophe, Withayachumnankul, Withawat
Format Conference Proceeding
LanguageEnglish
Published IEEE 22.11.2023
Subjects
Antenna arrays
Antenna feeds
Bandwidth
Fabrication
Lenses
Permittivity
Silicon
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Summary:Terahertz communications require compact, high-gain antennas that can be integrated with sources, as alternative to traditional lenses, which have bulky sizes and lack design flexibility. This paper introduces a high-gain, low-profile silicon cavity antenna integrated with a WR-3 waveguide feed. The antenna consists of a 2-mm thick silicon wafer with non-uniform hole arrays designed to locally control the effective permittivity. The holes are laser-etched on both sides of the silicon wafer, to overcome phase coverage limitations caused by the tapered side walls of the air hole during fabrication. Experimental results confirm a gain of 19 dBi at 275 GHz, with a 3-dB bandwidth of approximately 29%. We further demonstrate that the high-gain antenna can be integrated with a quarter-wave plate for circularly polarized (CP) radiation.
DOI:10.1109/APCAP59480.2023.10469730