Gain and bandwidth enhancement of a singly‐fed circularly polarised dielectric resonator antenna

Varshney, Gaurav

doi:10.1049/iet-map.2019.0932

Cited by 19 publications

(19 citation statements)

References 37 publications

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“…8,9 Although, the techniques are sufficiently developed for obtaining the wideband response with single feeding, still, the researchers are struggling for obtaining the high gain in the case of wideband CPDRAs. 10,11 Few techniques have been utilized for improving the gain of wideband CPDRA like staking of deformed DR geometries 10 and using frequency selective surfaces (FSS). 12 The use of staking generally increases the height of the DR and placing FSS is a complex task.…”

Section: Introductionmentioning

confidence: 99%

“…14 This antenna provides the inconsistent gain profile throughout the passband in the passband, which is the most required thing in the case of CPDRA arrays. 10 The other method those were utilized are related to the use of superstrates like reported in References 12,16,17. The use of superstrates is a quite complex task due the increased antenna height.…”

Section: Introductionmentioning

confidence: 99%

“…The proposed antenna provides an excellent solution in the area of implementing the high-gain CPDRA in terms of antenna height, which generally remains very high. 10 It can be noticed in the recently implemented gain enhancement techniques in CPDRAs that two different previously developed techniques have been merged; one for obtaining the orthogonal degenerate modes and another for enhancing the gain like stacking, 10 the use of superstrates and FSS. 12,16,17 The novelty of the proposed antenna can be defined in the similar manner in terms of implementation of an array for obtaining the high gain which was not reported earlier.…”

Section: Introductionmentioning

confidence: 99%

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An array of staircase‐shaped circularly polarized DRA

Moharram

Varshney

Ibrahim

2021

Int J RF Microw Comput Aided Eng

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A wide band circularly polarized (CP) aperture coupled staircase shaped wideband dielectric resonator antenna (SSCPDRA) array is implemented. The proposed array is composed of identical four SSCPDRA elements. The wideband CP and gain of the single element is enhanced by using 2 × 2 array with sequential phase feeding network. The measured results outputs emphasize that the proposed array is operated at frequency band from 8 to 12.3 GHz (43%). In addition, it has 3 dB axial ratio extended from 8.35 to 12.2 GHz (38.5%). Furthermore, the radiation pattern has broadside direction with the usability within the X-band applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An array of staircase‐shaped circularly polarized DRA

Moharram

Varshney

Ibrahim

2021

Int J RF Microw Comput Aided Eng

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“…CP-DRA has potential to surmount all the downsides of LP-DRA. It also overpowers the effect on the orientation of transmitting and receiving antennas [1][2][3]. Most of the circularly polarized antenna have dual-feeding mechanism which increases the size and complexity of the circuit.…”

Section: Introductionmentioning

confidence: 99%

Circularly Polarized Multiple Layer Dielectric Resonator Antennas

Gupta¹,

Gaur²,

Gupta³

et al. 2021

PIER C

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A sequence of anisotropic and isotropic materials of dielectric constant 12 and 10 respectively have been stacked alternatively to form a four-layer stack structure with aperture coupled feed mechanism for excitation. Applying this excitation, orthogonal mode pair TE x δ21 and TE y 2δ1 has been excited at frequencies 7.54 GHz and 7.8 GHz, respectively in Y Z and ZX planes to generate circular polarization. A circularly polarized bandwidth in the region (7.54 GHz-7.92 GHz) in conjunction with impedance bandwidth in the region (5.23 GHz-5.52 GHz) with a gain of 5.2 dBi has been accomplished. The designed antenna is appropriate for C-band and weather radar applications. The design assessment has been done using Ansys HFSS. The three stages of antenna design are examined. Further, the design is investigated with a 6-layer structure and an 8-layer structure.

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“…It gives a percentage CP bandwidth of 24.75%. 15 Varshney et al presented inverted-Sigmoid-shaped DRA for multiband CP applications. However, the antenna design provides better results, but it suffers from a complex fabrication process.…”

Section: Introductionmentioning

confidence: 99%

Broadband dielectric resonator antenna with dual‐frequency circularly polarized response for WLAN and WiMAX applications

Sharma

Dwivedi

Narayaswamy

et al. 2021

Circuit Theory & Apps

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In this paper, a moon-shaped aperture-coupled ring-shaped dielectric resonator antenna (DRA) is suggested, realized, and tested. The L-shaped microstrip line is designed to stimulate the aperture. Vital characteristics of the proposed radiator are as follows: (a) Broadband DRA with dual-frequency circular polarized (CP) response is realized by the mixture of HEM X 11δ and HEM Y 11δ mode inring DRA; (b) wide impedance bandwidth is attained with the help of dropping the effective permittivity of radiating structure by converting cylindrical shape into a ring shape. To test the practical feasibility, the proposed antenna design is fabricated and tested inside the anechoic chamber. Practical outcomes confirm that the proposed antenna works over the frequency range of 2.44-3.66 GHz along with supporting dual CP waves within the operating range, i.e., 2.44-2.64 and 3.4-3.65 GHz respectively. Broadsided (θ = 0 0 and ϕ = 0 0 ) RHCP radiation pattern makes the proposed antenna design applicable for IEEE 802.15.4 wireless sensor network (2.5 GHz) and WiMAX (3.5 GHz).

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Gain and bandwidth enhancement of a singly‐fed circularly polarised dielectric resonator antenna

Cited by 19 publications

References 37 publications

An array of staircase‐shaped circularly polarized DRA

An array of staircase‐shaped circularly polarized DRA

Circularly Polarized Multiple Layer Dielectric Resonator Antennas

Broadband dielectric resonator antenna with dual‐frequency circularly polarized response for WLAN and WiMAX applications

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