Miniaturization of monopole antenna using high refractive index metamaterial loading

Reddy, G. Bharath; Murugan, Harish Adhithya; Dhamodharan, Sriram Kumar

doi:10.1002/mmce.22163

Cited by 7 publications

(4 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After introduction of single dielectric disc in monopole, the reactance presents at 1.49 GHz of reference monopole antenna has been cancelled out by the inductive reactance of circular dielectric disc. This results in reduction of resonant frequency of 25.12% (simulation value) unlike in [27] where miniaturization is achieve using very high refractive index meta-material. It can be noted that the proposed antenna has match the required impedance characteristic without having any matching network.…”

Section: Results and Descriptionmentioning

confidence: 99%

Miniaturized Dielectric Disc Loaded Monopole Antenna

Parvez¹,

Sm²,

Minz³

2021

Preprint

View full text Add to dashboard Cite

This paper deals with miniaturization technique based on frequency reduction using top loaded dielectric discs. In contrast to a simple monopole, the resonant frequency of monopole loaded with two dielectric discs changes from 1.98 to 1.29 GHz, resulting 34.84% reduction in resonant frequency keeping the antenna length (36.00 mm) unaltered. It is well-known fact that dielectric material can trap the energy to be delivered from source to antenna and as a result, it is unable to radiate efficiently. Then any approach to use the dielectric material for miniaturization process must, therefore, antenna coupled in such a way that it can radiate efficiently. The dielectric disc on top of monopole creates an inductive situation in a similar way to oppositely directed wire loop compensate the capacitive effect present at monopole causes the reduction in resonant frequency. This concept is implemented without sacrificing any desired features like bandwidth, radiation characteristics and efficiency (more than 98%) and analyzed with an equivalent circuit model. Experimental results illustrate good agreement with simulation results. This monopole antenna in car can be designed for GPS system, car to car communication, GSM or CDMA operation.

show abstract

Section: Results and Descriptionmentioning

confidence: 99%

Miniaturized Dielectric Disc Loaded Monopole Antenna

Parvez¹,

Sm²,

Minz³

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The ZOR is formed either by using ENG TL/mu negative TL or composite right/left-handed (medium) TL [81]. In [74] a wire monopole antenna is miniaturized from 29.5mm to 16 mm using an array of a single ring SRR as MTM loading. This single ring SRR arrangement increases the reactance (inductive) and permeability of the effective medium and helps to form a high refractive index medium.…”

Section: A Mtm Loadingmentioning

confidence: 99%

Electromagnetic Metamaterials: A New Paradigm of Antenna Design

2021

View full text Add to dashboard Cite

The progress of technology in consumer electronics demand an antenna having a compact size, high gain and bandwidth, and multiple antennas at transmitter and receiver to enhance the channel capacity. Over the last decade, numerous techniques are proposed to improve the performance of the antenna. One such technique is the use of metamaterials (MTMs) in antenna design. MTMs are artificial structures to provide unique electromagnetic properties that are not available in natural materials. The unique properties of these materials allow the design of high-performance antennas, filters, and microwave devices which cannot be obtained using traditional antennas. Loading antenna with the one, two, and three-dimensional MTM structures comprised of a periodic subwavelength unit cell exhibits RLC resonant structures and allows to manipulate electromagnetic waves in the antenna system. These structures offer low resonant frequency compared to the antenna resonant frequency resulting in antenna miniaturization and manipulation of electromagnetic waves helps in enhancing the gain and bandwidth, and achieving circular polarization (CP) of an antenna system. Also, metamaterial loading enhances isolation between the antenna elements in the multiple-input-multiple output (MIMO) system by suppressing the surface waves. In this paper, the electromagnetics of MTM with analytical expressions and its application in antenna design are discussed in detail. The MTM-based antennas are classified into MTM loading, MTM inspired antenna, metasurface loading, and composite right/left hand (CRLH) based antennas. The recent development in MTM inspired antenna and its application in antenna miniaturization, enhancing gain and bandwidth, achieving CP and mutual coupling suppression in MIMO antenna systems are discussed to make it useful for further research. INDEX TERMS Circular Polarization (CP), Metamaterial (MTM), gain, bandwidth, high impedance surface (HIS), mutual coupling, antenna miniaturization, composite right/left hand (CRLH).

show abstract

“…Further, it has helped to improve the impedance match performance of the proposed antenna 22 . An array of four SR‐SRR is loaded in the monopole to obtain effective miniaturization; though this technique achieves better size reduction, its design and implementation process is complex 23 …”

Section: Introductionmentioning

confidence: 99%

“…However, it does cover only single frequency band. From the above literature survey, it is observed that most of the existing antenna designs have the following issues: large size, narrow bandwidth, gain, ka, and less coverage of applications 22–42 . To address the above issues, a compact antenna design with a rectangular‐shaped split‐ring resonator (RSRR) structure is discussed.…”

Section: Introductionmentioning

confidence: 99%

An electrically small inverted L‐shaped asymmetric coplanar strip‐fed antenna with split‐ring resonator for multiband applications

Rajkumar

Venkatesan

Kumar

2021

Int J Communication

View full text Add to dashboard Cite

Summary In this paper, an electrically small inverted L‐shaped asymmetric coplanar strip‐fed antenna with a split‐ring resonator structure is proposed for multiband applications. It possesses an extended monopole antenna and a rectangular split‐ring resonator (RSRR) structure. A monopole is responsible for generating the first and last resonance frequencies. Similarly, the RSRR structure produces center frequency (5.5 GHz) among three resonance frequency bands and improves impedance matching at a higher frequency. The antenna has an electrical size of 0.176 λ0 × 0.096 λ0 × 0.012 λ0. The proposed antenna has a triband resonance response at 2.45, 5.5, and 7.5 GHz with a bandwidth of 560 MHz, 680 MHz, and 3 GHz, respectively, which covers WiBro (2.3 GHz), WLAN (2.4/5.2 GHz), WiMAX (2.5/5.5 GHz), X‐band downlink (7.4 GHz), and ITU band (8.5 GHz). The antenna design is simulated and validated with measured results and has better radiation characteristics in all the required frequency bands. The presence of metamaterial property in the proposed RSRR is analyzed. The design is an electrically small antenna, and it has a radian sphere (ka) = 0.64. Further, the proposed antenna performances are compared with the various existing literature.

show abstract

Miniaturization of monopole antenna using high refractive index metamaterial loading

Cited by 7 publications

References 12 publications

Miniaturized Dielectric Disc Loaded Monopole Antenna

Miniaturized Dielectric Disc Loaded Monopole Antenna

Electromagnetic Metamaterials: A New Paradigm of Antenna Design

An electrically small inverted L‐shaped asymmetric coplanar strip‐fed antenna with split‐ring resonator for multiband applications

Contact Info

Product

Resources

About