Broadband Terahertz Dielectric Rod Antenna Array with Integrated Half-Maxwell Fisheye Lens

Koala, Ratmalgre; Headland, Daniel; Yamagami, Yuichiro; Fujita, Masayuki; Nagatsuma, Tadao

doi:10.23919/mwp48676.2020.9314424

Cited by 7 publications

(2 citation statements)

References 7 publications

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“…The most common are dielectric rods with a ground plane and a dielectric rod placed in a channel metal waveguide. In addition, there are various irregularities, such as longitudinal or transverse conductor strips on the waveguide surface [44], grooves [45,46], holes in the dielectric rod [47,48], and quarter-wave pins on the walls of the channel metal waveguide [49]. Each of the presented options for dielectric waveguide irregularities is quite simple in terms of technological implementation and has characteristic advantages and disadvantages.…”

Section: Introductionmentioning

confidence: 99%

A Promising Ka Band Leaky-Wave Antenna Based on a Periodic Structure of Non-Identical Irregularities

Shaaban

Ali

Yasseen

et al. 2022

Preprint

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This paper presents a new periodic grooved dielectric leaky-wave antenna (LWA) with non-identical irregularities for an extremely high-frequency (EHF) range capable of performing efficiently in the Ka band through a stable gain, a decrease in the level of the side lobes, and the achievement of a narrower main lobe beam. It consists of a dielectric waveguide antenna placed inside a channeled rectangular metallic waveguide to improve performance. A dielectric rod was used to overcome the losses related to the propagation of electromagnetic waves in metal conductors. A grooved dielectric of a 21-element linear array is used to propose a simple approach for the synthesis of such antennas based on a modified energy method and is fed by a standard waveguide. It was designed and simulated at 37.2 GHz for satellite, 5G antennas, and radar applications. The major novelty of this study is the ability to control the direction of the main lobe through non-identical irregularities in geometric parameters, such as the width, height, and distance between each element. Radiation techniques have been studied extensively using simulations. A performance antenna with radiation efficiency 99.35%, gain 22 dBi, width of radiation pattern 3.2 ◦ , and side lobe level (SLL) -18.3 dB has been achieved.

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Section: Introductionmentioning

confidence: 99%

A Promising Ka Band Leaky-Wave Antenna Based on a Periodic Structure of Non-Identical Irregularities

Shaaban

Ali

Yasseen

et al. 2022

Preprint

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show abstract

“…Apart from applications in cloaking and perfect imaging phenomena [2][3][4], Maxwell fish eye is a common profile in quantum optics with single atoms and photons [6], optical resonators [7], discrete spectrum radiation [5] etc. Moreover, there are many experimental implementations of the Maxwell fish eye lenses [8][9][10]. In most of the listed studies, scalar wave approximation was used and polarization of electromagnetic waves was not taken into account.…”

Section: Introductionmentioning

confidence: 99%

Maxwell fish eye for polarized light

Davtyan,

Gevorkian,

Nersessian

2021

Preprint

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We consider the propagation of polarized light in the medium with Maxwell fish eye refraction index profile. We show that polarization violates the additional symmetries of medium, so that ray trajectories no longer remain closed. Then we suggest a modified, polarization-dependent Maxwell fish eye refraction index which restores all symmetries of initial profile and yields closed trajectories of polarized light. Explicit expressions for the polarization dependent integrals of motion and the solutions of corresponding ray trajectories are presented.

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Miniaturized Maxwell Fisheye Lens for Terahertz Multibeam Luneburg lens Antenna

Guo

Wang

2022

2022 5th International Conference on Electronics and Electrical Engineering Technology (EEET)

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Broadband Terahertz Dielectric Rod Antenna Array with Integrated Half-Maxwell Fisheye Lens

Cited by 7 publications

References 7 publications

A Promising Ka Band Leaky-Wave Antenna Based on a Periodic Structure of Non-Identical Irregularities

A Promising Ka Band Leaky-Wave Antenna Based on a Periodic Structure of Non-Identical Irregularities

Maxwell fish eye for polarized light

Miniaturized Maxwell Fisheye Lens for Terahertz Multibeam Luneburg lens Antenna

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