Excitation of low‐profile equilateral‐triangular dielectric resonator antenna using a conducting conformal strip

Lo, H. Y.; Leung, Kwok Wa

doi:10.1002/mop.1166

Cited by 21 publications

(13 citation statements)

References 11 publications

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“…Close form expressions for far-field radiation patterns of the fundamental TM z 101 mode are given here using 'equivalence principle' [9] for both models (PMC and IPMC). Theoretical results on resonant frequencies and far-field radiation patterns are compared with experimental data as found in the published literature [3][4][5][6][7][8] to show the accuracy of our theory for different dimensions and relative permittivity of ETDRA. One prototype is also fabricated for further experimental verification.…”

Section: Research Articlementioning

confidence: 95%

“…1, conventional source-free ETDRA having side length a, height d and relative permittivity ɛ r on a metallic ground plane is shown. Literature survey shows that some experimental works have been reported on the performance of thin ETDRA for fundamental TM z 101 mode [3][4][5][6][7]. Several feeding mechanisms such as aperture on the ground plane [3], slot line [4], conformal strip [5], rectangular waveguide aperture [6], disk loaded coaxial aperture [7] etc., had also been utilised by Leung et al to excite the ETDRA.…”

Section: Introductionmentioning

confidence: 99%

“…Literature survey shows that some experimental works have been reported on the performance of thin ETDRA for fundamental TM z 101 mode [3][4][5][6][7]. Several feeding mechanisms such as aperture on the ground plane [3], slot line [4], conformal strip [5], rectangular waveguide aperture [6], disk loaded coaxial aperture [7] etc., had also been utilised by Leung et al to excite the ETDRA. A qualitative comparison can be made from those experimental investigations as reported in [3][4][5][6][7] but it will be limited on thin (or low-profile i.e.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical investigations on equilateral triangular dielectric resonator antenna

Maity¹,

Gupta²

2017

IET Microwaves, Antennas & Propagation

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Equilateral triangular dielectric resonator antenna (ETDRA) is investigated here analytically for TMz mode. For theoretical analysis, the triangular surfaces on the top and bottom of the isolated ETDRA are modelled either as perfect magnetic conductors (PMC) or imperfect magnetic conductors (IPMC), whereas the side walls having rectangular cross‐section are modelled as PMC only. The concept of reduction in effective size due to the avoidance of any corner by the electric field lines is used for the first time to predict the resonant frequency for different TMzmnp modes with an accuracy of 4%. Consequently, an expression is also given here for efficient evaluation of effective dimensions of the ETDRA for various TMzmnp modes. Closed form expressions for the far‐field radiation patterns of dominant TMz101 mode are also presented using both (PMC and IPMC) models. Theoretical results are compared with published data as found in the open literature. One antenna prototype is also fabricated, tested and measured for further verification. It is found that the authors’ theoretical results are in close agreement with measured data.

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Section: Research Articlementioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Theoretical investigations on equilateral triangular dielectric resonator antenna

Maity¹,

Gupta²

2017

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

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“…In addition to this, the perturbation in the structure also helps to improve the bandwidth by reducing the Q‐factor. The proposed antenna offer an impedance bandwidth of 60% which is more than the earlier reported work based on the triangular DRAs …”

Section: Introductionmentioning

confidence: 80%

“…The proposed antenna offer an impedance bandwidth of 60% which is more than the earlier reported work based on the triangular DRAs. [16][17][18][19][20][21] The multiple-input multiple-output (MIMO) technology has emerged as a new paradigm for modern wireless communication systems and is used in most of the wireless standards. The use of multiple radiators at both the transmitting and receiving ends in MIMO systems improves the link reliability and enhances the channel capacity without additional power requirement.…”

Section: Introductionmentioning

confidence: 99%

A-shaped wideband dielectric resonator antenna for wireless communication systems and its MIMO implementation

Sharma

Sarkar

Biswas

et al. 2018

Int J RF Microw Comput Aided Eng

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In this article, a new A‐shaped dielectric resonator antenna (DRA) excited by a conformal strip is proposed for wideband applications. The wide bandwidth is achieved by combining two adjacent modes that is, TM101 and TM103. The experimental results demonstrate that the proposed DRA offers an impedance bandwidth (for S11≤−10 dB) of 59.7% (3.24‐6.0 GHz), covering IEEE 802.11 and U‐NII bands. The antenna provides a fairly stable radiation pattern with the gain ranging from 5.29 to 7 dBi across the operating bandwidth. A dual‐element multiple‐input multiple‐output (MIMO) system is also realized using the proposed wideband DRA. The impedance bandwidth of the dual‐element MIMO antenna is 59.2% and 60.9% for Port1 and Port2, respectively and the isolation between the ports is better than 20 dB across the bandwidth. For Port1, the gain of the MIMO antenna ranging from 6.03 to 7.45 dBi is obtained across the bandwidth. Furthermore, the diversity performance of the MIMO antenna is found to be good with envelope correlation coefficient below 0.003 over the operating band. The proposed antenna could be the potential candidate for worldwide interoperability for microwave access (WiMAX), wireless local area network (WLAN) and lower European UWB frequency band (3.4‐5.0 GHz) applications.

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Closed form expressions to find the far‐field patterns of an equilateral triangular dielectric resonator antenna for various higher order modes

Maity

Gupta

2020

Int J RF Microw Comput Aided Eng

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In this work, an equilateral triangular dielectric resonator antenna (ETDRA) is modeled as a source free dielectric cavity, bounded by perfect magnetic conductor to investigate its radiation characteristics for various TM z mnp modes. Closed form compact expressions are provided to compute the far-zone radiation patterns for different TM z mnp modes. Radiated power, quality factor, gain, efficiency, bandwidth, etc. are also investigated. Theoretical farfield radiation patterns are compared with simulated (HFSS) data for first five modes that is, TM 101 ,TM 111 ,TM 201 ,TM 211 and TM 301 modes. Theoretical farfield patterns are also verified with measured data (our own experimental data and data available, as found in the open literature) for TM 101 ,TM 201 and TM 211 modes. It is found that three modes out of first five modes produce a peak in the broad-side direction. From this investigation, it is also found that different ETDRAs having a fixed value of aspect ratio (side length/height) produce almost same radiated powers, Q-factor, bandwidth, efficiency, etc. for a fixed value of relative permittivity.

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Excitation of low‐profile equilateral‐triangular dielectric resonator antenna using a conducting conformal strip

Cited by 21 publications

References 11 publications

Theoretical investigations on equilateral triangular dielectric resonator antenna

Theoretical investigations on equilateral triangular dielectric resonator antenna

A-shaped wideband dielectric resonator antenna for wireless communication systems and its MIMO implementation

Closed form expressions to find the far‐field patterns of an equilateral triangular dielectric resonator antenna for various higher order modes

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