Circularly Polarized Dielectric Resonator Antenna Fed by Off-Centered Microstrip Line for 2.4-GHz ISM Band Applications

Lin, Chia-Wei; Sun, Jwo‐Shiun

doi:10.1109/lawp.2014.2388075

Cited by 39 publications

(30 citation statements)

References 6 publications

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“…Literature survey reveals that the generation of orthogonal modes depends on either geometry of dielectric resonator or particular feeding mechanisms and it may be single, dual, or sequentially feeding techniques . The single feeding is more favorable in the antenna community for exciting the antenna structure because it has advantages like less complexity and flexibility to excite DRA for generation of CP waves . There are several different types of dielectric resonator (DR) geometries have been utilized to generate CP bandwidth by using a different combination of single feeding technique.…”

Section: Introductionmentioning

confidence: 99%

“…[3][4][5] The single feeding is more favorable in the antenna community for exciting the antenna structure because it has advantages like less complexity and flexibility to excite DRA for generation of CP waves. [6][7][8] There are several different types of dielectric resonator (DR) geometries have been utilized to generate CP bandwidth by using a different combination of single feeding technique.…”

Section: Introductionmentioning

confidence: 99%

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Compact asymmetric cross‐shaped rectangular dielectric resonator antenna for wideband circular polarization

Kumar

Chaudhary

2019

Micro & Optical Tech Letters

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A compact asymmetric cross‐shaped dielectric resonator (DR) antenna with broadside wideband circularly polarized has been investigated by using the coaxial probe feeding technique. The presented antenna consists of the asymmetric cross‐shaped DR, a metal strip, and a coaxial feed. Here, the metal strip is used at the corner of the cross‐shaped DR to reduce the excessive tangential electric field and acts as a mirror for the normal filed components. Therefore, the orthogonal modes TExδ11 and TEy1δ1 are excited at resonance frequencies of 4.55 GHz and 5.55 GHz in this antenna structure, and because of these modes, the proposed antenna is able to produce CP fields. The antenna with −10 dB impedance bandwidth provides the measured results of 43.84%, whereas the measured 3‐dB axial ratio bandwidth is found to be 11.23%. Moreover, the proposed antenna shows low profile geometry, that is, 0.175λ0, where λ0 is the wavelength at the central frequency.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Compact asymmetric cross‐shaped rectangular dielectric resonator antenna for wideband circular polarization

Kumar

Chaudhary

2019

Micro & Optical Tech Letters

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“…Table provides the technical performance comparison between the proposed antenna and previously published related antenna structures in the literature at around 2.4 GHz band applications. It is observed that the proposed antenna has good performances in terms of the antenna complexity, size, polarization, impedance bandwidth, and ARBW.…”

Section: Resultsmentioning

confidence: 99%

Wideband circularly polarized hybrid dielectric resonator antenna with bi‐directional radiation characteristics for various wireless applications

Kumar

Nasimuddin

Chaudhary

2019

Int J RF Microw Comput Aided Eng

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In this article, a wideband circularly polarized (CP) dielectric resonator (DR) over an asymmetric‐slot radiator based hybrid‐DR antenna is proposed with bi‐directional radiation characteristics. Bi‐directional CP radiation of the dual sense is obtained using a rectangular‐DR over asymmetric‐rectangular‐slot radiator with L‐shaped feed line. The asymmetric‐slot radiator feed by L‐shaped stub with the coplanar waveguide is used for generating two orthogonal modes, namely TE x δ11 and TEy1δ1 in the combined (rectangular‐DR and asymmetric‐slot radiator) hybrid‐DR antenna, which is verified by the distribution of electric field inside the rectangular DRA. The measured reflection coefficient bandwidth (S11 < −10 dB) and axial ratio (AR) bandwidth (AR < 3 dB) of the hybrid‐DR antenna are 80.5% (1.87‐4.39 GHz) and 43.8% (1.75‐2.73 GHz), respectively. The antenna radiation is in the broadside (θ = 0°, ϕ = 0°) direction as well as in the backside (θ = 180°, φ = 0°) direction with equal magnitudes in both the directions. Right‐handed and left‐handed CP waves are achieved respectively, in the boresight (+Z) and the backside (−Z) directions. The proposed CP hybrid‐DR antenna gives an average gain of 3.55 dBic and radiation efficiency of 95.0% in both directions. The proposed antenna covers various wireless useful bands such as ISM 2400 band, Wi‐Fi, Bluetooth, and Wi‐MAX (2.5‐2.7 GHz).

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“…A microstrip‐line‐fed microstrip slot antenna has also shown wide‐band and UWB performance . Some of them reported the UWB antenna with CP but they have a narrow 3‐dB axial ratio BW . The comparative lists for the performance of some similar antennas and the proposed antenna are shown in Table .…”

Section: Introductionmentioning

confidence: 99%

“…13,14 Some of them reported the UWB antenna with CP but they have a narrow 3-dB axial ratio BW. [15][16][17][18][19][20][21][22][23][24][25][26] The comparative lists for the performance of some similar antennas and the proposed antenna are shown in Table 1.…”

Section: Introductionmentioning

confidence: 99%

Circularly polarized hexagonal ring microstrip patch antenna with asymmetrical feed and DGS

Maurya

Kanaujia²,

Gautam³

et al. 2019

Micro & Optical Tech Letters

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A novel circularly polarized hexagonal ring microstrip patch antenna with asymmetrical feed is proposed for S, C, and X‐band applications. A semi‐arc‐shaped slot is integrated into the ground plane, and the hexagonal ring is tilted by an angle of 25° with respect to the microstrip‐line feed (asymmetric), which creates a circularly polarized UWB. The simulation of the proposed antenna is carried out using Ansoft HFSS v.13 and the measurement is done with an N5230A vector network analyzer. The simulated and the measured results of our proposed antenna are in good agreement. The successful implementation of the asymmetrical feed shows a broader impedance bandwidth of 134% (B.W = 9.55 GHz) from 2.34 to 11.89 GHz at 7.12 GHz of the center frequency. The 3‐dB axial ratio B.W is 2.8% (7.1‐7.3 GHz) and 21.8% (9.8‐12.2 GHz) in the UWB range. The average gain of the proposed antenna is 4.15 dBi. Good RHCP waves are also found in the x‐z and y‐z planes. The proposed antenna can be effectively used in S, C, and X‐band applications.

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Circularly Polarized Dielectric Resonator Antenna Fed by Off-Centered Microstrip Line for 2.4-GHz ISM Band Applications

Cited by 39 publications

References 6 publications

Compact asymmetric cross‐shaped rectangular dielectric resonator antenna for wideband circular polarization

Compact asymmetric cross‐shaped rectangular dielectric resonator antenna for wideband circular polarization

Wideband circularly polarized hybrid dielectric resonator antenna with bi‐directional radiation characteristics for various wireless applications

Circularly polarized hexagonal ring microstrip patch antenna with asymmetrical feed and DGS

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