Analysis of Leaky-Wave Radiation From Corrugated Parallel-Plate Waveguides With Steerable Beams by Rotatable Corrugations

Kehn, Malcolm Ng Mou; Chen, Chong-Zuo

doi:10.1109/tap.2021.3069545

Cited by 7 publications

(3 citation statements)

References 19 publications

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“…The imaginary part characterizes the phase delay of the wave propagating in the waveguide. The flexibility of periodic type LWAs for scanning over a wide angular range is one of their advantages [39]. Filling the guiding structures with dielectric is a good approach for producing a slow-wave mode [40][41][42][43].…”

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

“…Several high gain antennas and devices based on the enhanced transmission of light principle have been reported in literature including implementations at low THz frequencies [5]- [7]. Other corrugated patterns have found applications in corrugated substrate integrated waveguides (SIWs) for reduced size and broadband SIWs [8] and high-gain leaky wave antennas [9], as well as mechanically rotatable corrugated leaky wave antennas [10] that would enable miniaturization at mm-wave and THz frequencies.…”

Section: Introductionmentioning

confidence: 99%

Broadband THz Corrugated Bull’s Eye Antennas

Kampouridou

Feresidis

2021

IEEE Access

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A 3-dB gain and input impedance bandwidth enhancement technique for THz periodically corrugated metallic antennas, also known as Bull's Eye antennas, is presented. A novel design that exploits the depth qualities of the corrugations is introduced, by employing two different depth values for two sets of indented rings. While the gain bandwidth of most single-depth planar corrugated antennas is limited, the 3-dB gain bandwidth of the proposed dual-depth design is expanded along with a high maximum gain. The simulated optimum model of 10 rings at around 300 GHz exhibits a 3-dB gain bandwidth of 8.85% with a maximum gain at broadside of 21.3 dBi. A leaky-wave analysis has been performed via a simple transcendental equation at the level of the gap openings in order to explain the antenna principle of operation. A prototype of the optimum antenna design has been fabricated and measured. The typical subwavelength slot feeding of Bull's eye corrugated antennas is substituted with an easy-to-fabricate open waveguide aperture, yielding a broadband matching performance. Measured results demonstrate a good agreement with simulations and validate the proposed antenna design.

show abstract

“…The imaginary part characterises the phase delay of the wave propagating in the waveguide. The flexibility of periodic type LWAs for scanning over a wide angular range is one of their advantages [39]. Filling the guiding structures with dielectric is a good approach for producing a slow-wave mode [40][41][42][43].…”

mentioning

confidence: 99%

A promising Ka band leaky-wave antenna based on a periodic structure of non-identical irregularities

Shaaban

Ali

Yasseen

et al. 2022

J Wireless Com Network

View full text Add to dashboard Cite

This paper presents a new periodic grooved dielectric leaky-wave antenna with non-identical irregularities for an extremely high-frequency 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 channelled 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 antenna, 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 extensively studied using simulations. A performance antenna with radiation efficiency of 99.35%, gain of 22 dBi, width of radiation pattern of 3.2 $$^{\circ }$$ ∘ , and side lobe level (SLL) of $${-}$$ - 18.3 dB has been achieved.

show abstract

Analysis of Leaky-Wave Radiation From Corrugated Parallel-Plate Waveguides With Steerable Beams by Rotatable Corrugations

Cited by 7 publications

References 19 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

Broadband THz Corrugated Bull’s Eye Antennas

A promising Ka band leaky-wave antenna based on a periodic structure of non-identical irregularities

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