A Confocal Ellipsoidal Reflector System for Millimeter-Wave Applications

Ghamsari, Mohammad Hossein Koohi; Ahmadi-Boroujeni, Mehdi; Babanejad, Saeed

doi:10.1109/mmwatt58022.2022.10172114

Cited by 2 publications

(1 citation statement)

References 16 publications

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“…The first group is to improve radiation performance by changing the reflectors. [19][20][21][22][23][24][25][26][27][28][29][30] The reflectarrays composed of a large number of unit cell are used as a substitute of the conventional reflector based on the approach of propagation phase shifting, [20][21][22][23][24][25][26] and they have planar structure and light weight when compared with the metal reflectors. Moreover, different structures of reflectors are also developed to obtain a low profile, such as quasi-planar reflectors, 27 shaped reflectors 28 and folded reflectors.…”

Section: Introductionmentioning

confidence: 99%

A waveguide‐fed reflector antenna with high gain and multi‐beam capability demonstrated at 220 GHz

Chen,

Raza

2024

Micro & Optical Tech Letters

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A waveguide‐fed reflector antenna with high gain and multi‐beam capability is introduced and demonstrated at 220 GHz. Terahertz waves have a very small wavelength, which poses great challenges to the fabrication of terahertz antenna arrays and the connection with the T/R components. In this paper, a horn array with an element spacing less than one wavelength for terahertz frequency is presented and demonstrated, and its excitations are fan‐out using curved waveguides. The horn array is used as a feeding source of an offset parabolic reflector to achieve high‐gain and multi‐beam performance. The reflector antenna achieves four beam positions with θ = −0.7°, −0.2°, 0.2°, and 0.7°, and each beam obtains the gain of about 45 dBi. The experimental reflector antenna is fabricated and tested. Good experimental results further confirm the feasibility of the antenna and the potential application in Terahertz systems.

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