Contactless Linear Rotary Joint at <i>Ku</i>-Band

Azim, Muhammad Tayyab; Park, Jun-Hyeong; Park, Seong‐Ook

doi:10.1109/lmwc.2019.2912271

Cited by 6 publications

(1 citation statement)

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“…To mitigate the risk associated with recurrent mechanical stress, more rugged feed designs based on rotary joints [13] or other adjustable waveguide systems [26] can be employed. However, the former provide typically narrowband performance [27]- [29]. Moreover, the vertical feeding from the bottom complicates integration of such structures into the proposed lens beamformer.…”

Section: A Gap Waveguide Structurementioning

confidence: 99%

Shaped Parallel-Plate Lens for Mechanical Wide-Angle Beam Steering

Strober

Tubau²,

Girard³

et al. 2021

IEEE Trans. Antennas Propagat.

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This paper presents a parallel-plate lens beamformer for continuous wide-angle scanning. The design is based on a compact dual-lens system with extended scanning range and is optimized using a previously developed geometrical optics technique. Beam steering is accomplished with a mechanical feed system based on the non-contact characteristic of groove gap waveguides, offering large bandwidth, low profile, and mechanical ruggedness. The proposed concept is validated by an all-metal prototype of a 20.5-λ lens operating in the uplink Ka-band allocated to satellite communications (27.5 -31 GHz). Good agreement is obtained between the simulated and measured performance. The measured return loss is greater than 12 dB over the entire frequency band and beyond. High scanning performances are achieved over an angular range of `50°( `14 beamwidths), with maximum scan losses in the order of 3 dB and good pattern stability over the entire band. The proposed solution is particularly suited for next-generation satellite terminals requiring compact broadband antennas with continuous beam steering capability over a large angular range.

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Section: A Gap Waveguide Structurementioning

confidence: 99%