Conformal patch fed stacked triangular dielectric resonator antenna for WLAN applications

Abstract-Structural, vibrational and microwave dielectric properties of Nickel-Copper-Zinc ferrite (Ni 0.2 Cu x Zn 0.8−x Fe 2 O 4 ) ceramics have been presented in this paper. Samples have been prepared using conventional auto-combustion method. The X-ray diffraction (XRD) results confirmed the ferrite samples to be of cubic spinel structure, which further was validated by Fourier transform infrared (FT-IR) and Raman spectroscopy. The relative permittivity (ε r ) increased from 7.474 to 8.132 with successive increase in Cu content. The observed and calculated permittivity using ClausiusMossoitti relation have been in good agreement. The temperature coefficient of resonant frequency (τ f ) decreased from −75.85 ppm/ • C to −32.12 ppm/ • C with increase in successive Cu content. The relative permeability (µ r ) have been calculated by using the Nicholson-Ross-Weir conversion technique. Using Ni 0.2 Cu 0.2 Zn 0.6 Fe 2 O 4 sample the ferrite resonator antennas have been designed in three different shapes. The experimental and theoretical characteristics of the antennas have been compared and a good agreement has been achieved.

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“…For example, Lo et al in [15] have achieved around 3% impedance bandwidth using a very compact, high permittivity equilateral triangular DRA design. Kumari et al in [16] have used the concept of stacking three differently sized equilateral triangular DRAs on top of each other to achieve wide bandwidth of about 41% (4 to 6.02 GHz). Maity and Gupta in [17] have proposed a design of isosceles triangular DRA placed on a ground plane and excited using coaxial probe.…”

Section: Introductionmentioning

confidence: 99%

Design and Development of a Wideband Fractal Tetrahedron Dielectric Resonator Antenna With Triangular Slots

Trivedi¹,

Pujara²

2017

PIER M

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Abstract-In this paper, a fractal tetrahedron shaped dielectric resonator antenna (DRA) design for wideband applications is proposed. Two triangular-shaped fractal slots of different sizes are introduced to reduce Q-factor of DRA and in turn to achieve wide bandwidth (BW). Internal coaxial feeding is utilized for good impedance matching and ease of fabrication. The proposed fractal DRA is fabricated and tested. The measured results are in good agreement with the simulated ones. Measured impedance bandwidth of about 72.3% covering frequency band of 3.8-8.1 GHz is achieved. Good separation between co-and cross-polarized radiation patterns in the broadside direction is achieved. Various design parameters and associated results are discussed in this paper.

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Conformal patch fed stacked triangular dielectric resonator antenna for WLAN applications

Cited by 20 publications

References 11 publications

Structural and microwave characterization of Ni0.2CoxZn0.8−xFe2O4 for antenna applications

Structural and microwave characterization of Ni0.2CoxZn0.8−xFe2O4 for antenna applications

MICROWAVE DIELECTRIC PROPERTIES OF NI<sub>0.2</sub>CU<sub>X</sub>ZN<sub>0.8-X</sub>FE<sub>2</sub>O<sub>4</sub> FOR APPLICATION IN ANTENNA

Design and Development of a Wideband Fractal Tetrahedron Dielectric Resonator Antenna With Triangular Slots

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