Leaky wave antenna for millimeter wave utilization

Agarwal, Ruchi; Agarwal, Ayushi; Dwivedi, Aman; Sharma, Ashutosh

doi:10.1088/1742-6596/1921/1/012026

Cited by 4 publications

(3 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A frequency scanning radiating device, i.e., an LWA, is a viable and efficient choice in this respect because of its straightforward feeding structure, excellent gain, and wide band nature [21,22]. The terms uniform and periodic refer to two types of LWAs, depending on the geometrical construction.…”

Section: Introductionmentioning

confidence: 99%

SIW Leaky Wave Antenna for THz Applications

Arya

Garg

Al-Khafaji³

2023

Electronics

View full text Add to dashboard Cite

This paper proposes a new design of leaky wave antenna (LWA) based on substrate integrated waveguide (SIW) technology for THz applications. The suggested LWA structure has a combination of longitudinal and transverse slots and makes a 10-element linear array of radiating elements. To address the problem of open-stop-band (OSB), four additional smaller slots were etched on the corners of longitudinal and transversal slots. At the broadside, this LWA provided a gain of 12.33 dBi, and a continuous wide beam scanning range from +78° to −6° via the broadside while exhibiting efficient radiation performance over the operating frequency bands of 105 GHz to 109 GHz with a peak gain of 16.02 dBi.

show abstract

Section: Introductionmentioning

confidence: 99%

SIW Leaky Wave Antenna for THz Applications

Arya

Garg

Al-Khafaji³

2023

Electronics

View full text Add to dashboard Cite

show abstract

“…However, before RVSM data can be used in practise, its accuracy and consistency must be adequately addressed, especially when a patient is subject to random motion [7]. To meet the criteria of these systems, planar antennas must be broadband, highgain, low-profile, lightweight, and simple to incorporate into other technologies [12].…”

Section: Introductionmentioning

confidence: 99%

Bidirectional Leaky-Wave Antenna Based on Dielectric Image Line for Remote Vital Sign Detection at mm-Wave Frequencies

Mingle

Kampouridou

Feresidis

2022

IEEE Open J. Antennas Propag.

View full text Add to dashboard Cite

A bidirectional leaky wave antenna (LWA) with beam scanning capabilities was developed based on the dielectric image line for single-tone continuous-wave Doppler radar (DR) for remote vital sign monitoring (RVSM) in a dynamic environment. It consists of a conductor-backed copper dielectric image line with two of the same dielectric layers mounted on top of each other for performance improvement. A RO6010 substrate with high permeability is used for the top two layers. The bottom layer is a RT/duroid 5880 low permittivity substrate stacked on top of the copper DIL to prevent higher order modes from being excited in the DIL channel. The dominant mode of the DIL is perturbed by making holes periodically in the DIL, and fast-wave space harmonics are generated. The scanning range of the proposed antenna through the broadside is 70.19 • (−42.49 • to 27.7 • ) with an impedance bandwidth of 15 GHz (50-65 GHz), an optimum gain in the fast wave area ranging from 15.5 dBi to 19.79 dBi and an efficiency of 83.8% at 57.5 GHz. Detailed RVSM tests have been performed with the proposed antenna system. It is shown that by adjusting the operating frequency from 50 GHz to 65 GHz, multiple targets' breathing rates (BR) and heart rates (HR) can be detected within 70 • of the angular range.INDEX TERMS Dielectric image line (DIL); doppler radar sensors; Frequency scanning; Leaky wave antenna; remote vital sign monitoring.

show abstract

“…In this regard, a leaky wave antenna (LWA) as a frequency scanning radiating system is a promising candidate due to its simple feeding structure along with a high gain and a wide band performance [7,8]. There are two forms of LWAs based on geometry, termed uniform and periodic.…”

Section: Introductionmentioning

confidence: 99%

A Wide-Angle Scanning Sub-Terahertz Leaky-Wave Antenna Based on a Multilayer Dielectric Image Waveguide

et al. 2021

View full text Add to dashboard Cite

This paper presents a new layered dielectric leaky-wave antenna (LWA) for the sub-terahertz (THz) frequency range capable of efficient operation at the broadside with a wide beam scanning angle and stable gain. It consists of a conductor-backed alumina dielectric image line (DIL) with two different dielectric layers mounted on top of each other for performance improvement. The upper layer is a high permittivity RO6010 substrate to enhance the directivity as a superstrate and the lower layer is a low-permittivity RT/duroid 5880 substrate stacked on the alumina DIL to prevent the probable excitation of higher-order modes in the DIL channel. A 15-element linear array of radiating overlapped discs is used to mitigate the open stop-band (OSB) problem, fed by the mentioned waveguide, was designed and simulated at frequencies around 170 GHz. The dominant mode of the layered dielectric waveguide is perturbed by the infinite space harmonics generated by two sets of overlapped discs periodically sandwiched between the layers. It exhibited a relatively wide impedance bandwidth of 28.19% (157.5–206 GHz). Its radiation mechanism has been widely studied through simulations. The results revealed that the antenna provides a wide scanning capability through the broadside from −23° to 38°, covering the frequency range between 157.5 GHz and 201.5 GHz. For an array with 15 radiating elements, the simulated peak gain in the band is 15 dBi and the broadside gain is 13.6 dBi at 172 GHz.

show abstract

Leaky wave antenna for millimeter wave utilization

Cited by 4 publications

References 11 publications

SIW Leaky Wave Antenna for THz Applications

SIW Leaky Wave Antenna for THz Applications

Bidirectional Leaky-Wave Antenna Based on Dielectric Image Line for Remote Vital Sign Detection at mm-Wave Frequencies

A Wide-Angle Scanning Sub-Terahertz Leaky-Wave Antenna Based on a Multilayer Dielectric Image Waveguide

Contact Info

Product

Resources

About