A Miniaturized Ring Slot Antenna Design With Enhanced Radiation Characteristics

Mitra, Debasis; Ghosh, Bratin; Sarkhel, Abhishek; Chaudhuri, Sheli Sinha

doi:10.1109/tap.2015.2496628

Cited by 52 publications

(33 citation statements)

References 19 publications

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“…Table 3 concludes the performances of the proposed antenna with other reported miniaturized antennas. It is discovered that the impedance bandwidth and gain of the proposed antenna are higher compared to [4][5][6][7][8]. The proposed work consists of a simple structure of smaller size approaching electrically small antenna and easier to fabricate.…”

Section: Resultsmentioning

confidence: 99%

A Miniaturized 878 MHZ Slotted Meander Line Monopole Antenna for Ultra High Frequency Applications

et al. 2017

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Abstract-A slotted meander line printed monopole antenna for low frequency applications of 878 MHz is presented. The novelty of the design is obtained by evaluating numerous slots and meander line that produces a new structure of double E-shaped meander line antenna backed by a defected partial ground plane. The operating frequency of the conventional printed monopole antenna is greatly reduced by the presence of the slots and meander line which lead to the reduction of the antenna size. The size reduction of 70% compared to the conventional reference antenna is achieved in this study. The antenna has a simple structure and small antenna size of 46.8 mm × 74 mm or 0.137λ 0 × 0.217λ 0 . The antenna has been fabricated on a low-cost FR4 substrate and measured to validate the simulation performances. Measured results display that the proposed antenna produces omnidirectional radiation pattern of impedance bandwidth of 48.83 MHz and the maximum gain of −1.18 dBi.

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Section: Resultsmentioning

confidence: 99%

A Miniaturized 878 MHZ Slotted Meander Line Monopole Antenna for Ultra High Frequency Applications

et al. 2017

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“…To enhance the directivity of the miniaturized antenna a concentric conducting ring [21] with the width of r w is placed above the antenna at a height of h. It is worth to mention that the width of the conducting ring is selected same as the width of the annular slot. Loading of the ring over an antenna is a very simple and inexpensive technique for enhancement of directivity compared to [2,17]. The Ring & RIS loaded miniaturized antenna is displayed in Figure 1(b), whereas the fabricated structure is photographed in Figure 8.…”

Section: Cpw-fed Annular Slot Antenna Designmentioning

confidence: 99%

“…The enhancement of ultra-wide bandwidth of a circle-like slot antenna has been achieved in [16] by using trident-shaped feed line and two L-shaped stubs on the back of the substrate, respectively. Recently, a ring slot antenna has been miniaturized by single and multiple interdigitated slits inside a ring structure [17].…”

Section: Introductionmentioning

confidence: 99%

Miniaturization and Bandwidth Enhancement of a CPW-Fed Annular Slot Antenna Using Ris

Samanta¹,

Mitra²,

Chaudhuri³

2017

PIER Letters

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Abstract-In this paper a CPW-fed annular slot antenna is miniaturized with enhanced impedance bandwidth using a reactive impedance surface (RIS) substrate. The RIS is realized by patterning 3 × 3 array of circular elements over an inexpensive FR-4 substrate which is backed by a circular metallic plane. Due to the compensation of electric and magnetic energy stored by antenna and RIS substrate respectively, the antenna resonance frequency is shifted by 53.6% compared with a simple annular slot antenna. By the inclusion of such reactive surface, input impedance of the antenna is reduced, and a remarkable improvement in impedance bandwidth from 11.66% to 64.26% is also noticed. Therefore, both miniaturization and bandwidth enhancement are achieved simultaneously with the present loading technique. The directivity of the RIS loaded antenna is increased further by loading a concentric metallic ring over the RIS loaded structure at a height above the RIS plane. The Ring & RIS loaded structure is fabricated for measurement purpose. A good agreement is obtained between the simulated and measured results for both RIS loaded and Ring & RIS loaded configurations. The ring loading over the RIS antenna provides improvement in directivity about 5 dB. The peak gain and bandwidth are measured at −1.03 dBi and 58.62%, respectively.

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“…For enhancing the gain/directivity, Lovat et al proposed a novel idea using epsilon‐near‐zero (ENZ) and/or a mu‐very‐large (MVL) material excited by an electric dipole source as described in References , whereas, a mu‐near‐zero (MNZ) material and/or an epsilon‐very‐large (EVL) material is excited by a magnetic dipole. The EVL based metamaterial recently has been successfully applied for increasing directivity of a magnetic dipole, that is, slot antenna with compact configuration …”

Section: Introductionmentioning

confidence: 99%

“…The EVL based metamaterial recently has been successfully applied for increasing directivity of a magnetic dipole, that is, slot antenna with compact configuration. [10][11][12] In this article, an MVL based metamaterial slab has been applied for directivity enhancement of a wire monopole antenna owing to its electric dipole nature. In this regard, a magnetic metamaterial, operating under normal incidence, is used as unit cell of the metamaterial slab.…”

Section: Introductionmentioning

confidence: 99%

Directivity enhancement of wire monopole antenna using magnetic metamaterials

Das

Shaw

Mitra

et al. 2019

Int J RF Microw Comput Aided Eng

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This article proposes the use of a magnetic metamaterial (MTM) slab over the ground plane of a wire monopole antenna to improve its directivity. In this regard, mu very large (MVL) behavior of the metamaterial is utilized for enhancing the directivity of the monopole. Despite the directivity enhancement of about 5 dB, an improved bandwidth of 35% is obtained for the proposed configuration. Initially, a 2 × 3 array of a single MTM slab has been placed over the ground plane of the monopole. It is shown that, over the whole working band, a significant directivity improvement is maintained compared to the unloaded monopole. Further, the directivity performance has been investigated with different combination of MTM slab.

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A Miniaturized Ring Slot Antenna Design With Enhanced Radiation Characteristics

Cited by 52 publications

References 19 publications

A Miniaturized 878 MHZ Slotted Meander Line Monopole Antenna for Ultra High Frequency Applications

A Miniaturized 878 MHZ Slotted Meander Line Monopole Antenna for Ultra High Frequency Applications

Miniaturization and Bandwidth Enhancement of a CPW-Fed Annular Slot Antenna Using Ris

Directivity enhancement of wire monopole antenna using magnetic metamaterials

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