Radiation characteristics of terahertz waveguide‐fed circularly polarised antipodal exponentially tapered slot antenna

Lu, Hongda; Lv, Xin; Liu, Yong

doi:10.1049/el.2014.1448

Cited by 6 publications

References 8 publications

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220-320 GHz Hemispherical Lens Antennas Using Digital Light Processed Photopolymers

et al. 2019

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This paper presents a 220-320-GHz hemispherical lens antenna fabricated using photopolymer-based additive manufacture and directly fed by the standard WR-3 rectangular waveguide without any additional waveguide extension. The microfabrication process is based on digital light processing rapid prototyping using the Monocure 3DR3582C resin-based photocurable polymer. This gives various key advantages, including ease of antenna fabrication, manufacturing speed, and cost-effectiveness due to its rapid fabrication capability. Even though the photopolymer is found to have a loss tangent of 0.034 at 320 GHz, the all-polymer lens antennas still achieve a fractional bandwidth of 37%, covering the whole 220-320-GHz WR-3 waveguide band with a measured gain of approximately 16 dBi at 0 • over the whole band. A measured return loss of better than 14 dB is achieved from 220 to 320 GHz with a half-power beamwidth of approximately 12 • , which is relatively constant over the whole WR-3 band. INDEX TERMS Lens antenna, digital light processing, terahertz antennas.

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