Enhancement Bandwidth of Half Width-Microstrip Leaky Wave Antenna Using Circular Slots

Mohsen, Mowafak K.; Isa, Mohd Sa'ari Mohamad; Isa, Azmi Awang Md; Abdulhameed, M. K.; Attiah, Mothana L.; Dinar, and Ahmed Musa

doi:10.2528/pierc19040805

Cited by 10 publications

(11 citation statements)

References 38 publications

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“…With one, two, three, and four slots, bandwidth is 33.3, 37, 45.8, and 49.9%, respectively. The radiation efficiency of this structure is very high while the gain is reduced due to circular slots at higher frequency [30]. Gain is almost stable between 7.5 to 10.31 dBi in the operating frequency range.…”

Section: Various Bandwidth Enhancement Techniques Used For 5g Antennasmentioning

confidence: 99%

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Survey of various bandwidth enhancement techniques used for 5G antennas

Nahar

Rawat

2021

Int. J. Microw. Wireless Technol.

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Fifth-generation technology is not fully deployed in the world wireless communication till date. Millimeter-wave (mm-wave) band needs to be used due to plenty of available bandwidth and for achieving the goals of 5G such as greater data rate, ultra-high-speed video broadcasting, low latency services, and many more. Wideband antenna is required for 5G applications to access the high speed, low latency Internet services, and ultra-high-definition video streaming. Various bandwidth enhancement techniques have been reported by the researchers for microstrip antennas operating at microwave bands. High link losses, small wavelength, limited coverage, and environmental losses are the major challenges of mm-wave band. To mitigate these issues and satisfy 5G standard, an antenna with wide bandwidth, high gain, narrow steerable beam, high isolation, low side lobe levels, and multiband characteristics is required. Modifications in conventional antenna design techniques are required to achieve broader bandwidth along with stable radiation characteristics, improved gain, and low side lobe levels at mm-wave frequencies. This paper presents the survey of various bandwidth enhancement techniques which has been used in the 5G antennas designed by researchers. Reviews of some wideband 5G antennas with their performance comparisons are also discussed.

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Section: Various Bandwidth Enhancement Techniques Used For 5g Antennasmentioning

confidence: 99%

“…When the size of the antenna is small, cross-polarization and isolation are needed to be analyzed carefully. High cross-polarization creates distortion in the signal quality of communication [30]. Low cross-polarization level improves the polarization purity and isolation.…”

Section: Characteristics Of 5g Antenna and Performance Enhancement Techniquesmentioning

confidence: 99%

Survey of various bandwidth enhancement techniques used for 5G antennas

Nahar

Rawat

2021

Int. J. Microw. Wireless Technol.

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“…One edge of microstrip line is connected to the ground using a vias array, which is placed along the edge of microstrip line. Major purpose of the vias array is to avoid the propagation of the fundamental transversal electromagnetic (TEM) wave and to support the propagation of first higher-order mode through the structure [19]. The proposed antenna to shorten the edge of each element are used 60 vias.…”

Section: Antenna Configurationmentioning

confidence: 99%

Radiation beam scanning for leaky wave antenna by using slots

et al. 2020

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This paper provides an insight of a new, microstrip leaky wave antenna. It holds the ability to continue steer its beam at a swapping frequency. This is done with acceptable impedance matching while scanning and very little gain variation. Investigation is carried out on LWAs' control radiation pattern in steps at a band frequency via vertical and horizontal slots. The enhancement is realized by etching horizontal and vertical slots on the radiation element. This study also presents a novel half-width microstrip leaky wave antenna (LWA). The antenna is made up of the following basic structures group's vertical and horizontal slots. The reactance profile at the microstrip's free edge and thus the main beam direction is changed once the control-cell states are changed. The radiation pattern direction changes by sweeping the operating frequency between 4 GHz to 6 GHz.The main beam may be directed by the antenna between 15 o and 55 o. C band achieved the measured peak gain of the antenna of 10 dBi at 4.3 GHz beam scanning range.

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“…L EAKY-WAVE antennas (LWAs) are wave-guiding structures in which a travelling wave radiates through energy leakage along the entirety of the structure [1], [2]. Such antennas have received much attention due to advantages such as high gain, simple feeding network, wide optional bandwidth and unique frequency beam scanning ability [3]- [5].…”

Section: Introductionmentioning

confidence: 99%

A Broadband High-Gain Circularly Polarized Wide Beam Scanning Leaky-Wave Antenna

et al. 2020

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A new type of broadband circularly polarized leaky-wave antenna (LWA) with high-gain based on a corrugated substrate integrated waveguide (CSIW) structure is proposed and investigated. The CSIW structure that employs open-circuit stubs to replace metallic vias has the advantages of low-cost and easy fabrication as compared to conventional substrate integrated waveguides. Each unit-cell of the proposed LWA consists of two quarter-wavelength microstrip lines and a half-mode CSIW cell with three opencircuit stubs. Two M-shaped slots etched on the half-mode CSIW cell enables the generation of circularly polarized (CP) radiation. The full LWA, which consists of thirteen matched unit-cells cascaded along the direction of propagation enables continuous backward to forward beam scanning. The properties of the CSIW structure, including impedance matching and phase constant, are analyzed by Bloch impedance and dispersion simulations and the influence of the dimensions of the open-circuit stubs on the CP LWA performance is also investigated. A protype of the proposed LWA is fabricated and characterized. The measured results indicate that the proposed CSIW LWA has a high peak gain (9.3-12.5 dBi) throughout a large beam-scanning angle range from −28 • to +25 • , and the impedance bandwidth and 3-dB axial ratio (AR) bandwidth are over 40% covering the full Ka-band. INDEX TERMS Leaky-wave antenna (LWA), corrugated substrate integrated waveguide (CSIW), circular polarization (CP), beam scanning, Ka-band, broadband.

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Enhancement Bandwidth of Half Width-Microstrip Leaky Wave Antenna Using Circular Slots

Cited by 10 publications

References 38 publications

Survey of various bandwidth enhancement techniques used for 5G antennas

Survey of various bandwidth enhancement techniques used for 5G antennas

Radiation beam scanning for leaky wave antenna by using slots

A Broadband High-Gain Circularly Polarized Wide Beam Scanning Leaky-Wave Antenna

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