An Approach to Generate Circular Polarization in a Modified Cylindrical-Shaped Dielectric Resonator Antenna Using PMC Boundary Approximation

Chowdhury, Rakesh; Chaudhary, Raghvendra Kumar

doi:10.1109/lawp.2018.2864819

Cited by 32 publications

(26 citation statements)

References 14 publications

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“…Table 3 shows the comparison of the proposed CPDRA with some other existing CPDRAs. It can be observed that the antennas with height around

0.2 λ

or more provide the maximum gain up to 5 dBic [9–11, 19, 36–38, 40]. The antennas with greater height have the limitation of unstable gain over the CP passband [21, 22].…”

Section: Antenna Measurementmentioning

confidence: 99%

“…The gain of most of these antennas varies within 2–3 dBic only [3, 9–12, 14–16]. Though, some CPDRAs were reported with gain around 5–7 dBic [17–19] but these designs utilise the DR of height up to a complex level. Till now, only one technique is developed for gain enhancement of CPDRA which uses conventional frequency selective surface (FSS) and traditional cross slot excitation [20].…”

Section: Introductionmentioning

confidence: 99%

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

Varshney

2020

IET Microwaves, Antennas & Propagation

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“…Table 3 shows the comparison of the proposed CPDRA with some other existing CPDRAs. It can be observed that the antennas with height around

0.2 λ

or more provide the maximum gain up to 5 dBic [9–11, 19, 36–38, 40]. The antennas with greater height have the limitation of unstable gain over the CP passband [21, 22].…”

Section: Antenna Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Varshney

2020

IET Microwaves, Antennas & Propagation

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“…To achieve higher data rate and larger information capacity, many approaches have been reported to expand the 3 dB axial ratio (AR) bandwidth of the CP DR antenna, 12‐19 which can be mainly classified into two categories. In the first approach, the multiple modes are merged together by employing special‐shaped DR such as hollow cylindrical, 12 spidron fractal, 13 high‐aspect ratio, 14 stair‐shaped, 15 and two‐layer nested 16 . In the second approach, various hybrid feeding structures are adopted, such as H‐shaped conformal metal strip, 17 dual pair of right‐angled microstrip line, 18 and truncated rectangular patch, 19 to improve coupling or introduce additional resonant modes (generated by the feeding structure).…”

Section: Introductionmentioning

confidence: 99%

A low‐profile circularly polarized dielectric patch antenna with bandwidth expansion

Chen

Wang

Huang

et al. 2021

Int J RF Microw Comput Aided Eng

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A new technology for expanding the axial ratio (AR) bandwidth of the circularly polarized (CP) dielectric patch (DP) antenna while maintaining the low‐profile characteristic is proposed for the first time. By making full use of the multimode characteristic of the DP resonator, two pairs of degenerate modes (ie, TM101 and TM011, TM121 and TM211) are selected for the broadband design. The key to the proposed technology is that according to the EM field distribution of the two pairs of degenerate modes, four air holes are introduced in the DP and their position and size are elaborately designed to discriminately control the frequency of the two pairs of degenerate modes. Then, these modes become close and are merged to effectively expanding the AR bandwidth of the low‐profile CP DP antenna. For demonstration, a prototype centered at about 10 GHz is designed, fabricated, and measured. The measured results exhibit that the proposed CP DP antenna with a low profile of 0.07λ0 owns a 3 dB AR bandwidth of 9.7% and a peak gain of 7.66 dBic. Good agreement is observed between simulated and measured results.

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“…Further, Fibonacci series based CDRA & rotated stair shaped DRA, stair shaped DRA with open‐ended ground plane are also investigated. In Reference , proper selection of feed position & height is used for generating orthogonal field in sector of cylindrical DRA, thus generating circular polarization. In Reference , DRA excited by unequal length of cross slot feed placed on offset position of the center, covered 4.7% CP in broadside direction.…”

Section: Introductionmentioning

confidence: 99%

Wideband circular polarized cylindrical segmented dielectric resonator antenna for ISM band applications

Chauhan

Mukherjee

2020

Int J RF Microw Comput Aided Eng

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In this article, cylindrical segmented dielectric resonator antenna (CDRA) is proposed for ISM band applications. To obtain the proposed antenna, three different (120°, 60°, and 30°) segments of different cylindrical radius r1, r2, and r3 with stacked angular displacement are used for circular polarization with wideband frequency response. Quadrature phase shift of orthogonal field are observed when segment of cylinder is stacked with specific angular displacement. Various higher order modes are investigated. The simulated and measured impedance bandwidth of the proposed antenna is 90% (3.3 GHz‐8.7 GHz) and 83.4% (3.5 GHz‐8.5 GHz) respectively and the simulated and measured axial ratio bandwidth is 53.8% (3.8 GHz‐6.6 GHz) and 58.5% (3.5 GHz‐6.4 GHz), respectively. Proposed antenna attains 7.1 dBi measured peak gain at 8.5 GHz with more than 80% radiation efficiency in the frequency band. The fabricated prototype is experimentally measured and its results are found to be commensurable with the simulation results.

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An Approach to Generate Circular Polarization in a Modified Cylindrical-Shaped Dielectric Resonator Antenna Using PMC Boundary Approximation

Cited by 32 publications

References 14 publications

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

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

A low‐profile circularly polarized dielectric patch antenna with bandwidth expansion

Wideband circular polarized cylindrical segmented dielectric resonator antenna for ISM band applications

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