Accurate calculations of geometrical factors of Hakki-Coleman shielded dielectric resonators

Grabovickic, R.

doi:10.1109/77.791916

Cited by 30 publications

(17 citation statements)

References 13 publications

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“…(14) and the bandwidth (return loss < −10 dB) is calculated as given in Ref. [39]. Similar calculations were also employed in earlier literatures [17,40,41].…”

Section: Dielectric Resonator Antenna (Dra) Measurementsmentioning

confidence: 98%

Structural, microwave dielectric properties and dielectric resonator antenna studies of Sr(ZrxTi1−x)O3 ceramics

Parida

Rout

Subramanian

et al. 2012

Journal of Alloys and Compounds

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“…(14) and the bandwidth (return loss < −10 dB) is calculated as given in Ref. [39]. Similar calculations were also employed in earlier literatures [17,40,41].…”

Section: Dielectric Resonator Antenna (Dra) Measurementsmentioning

confidence: 98%

Structural, microwave dielectric properties and dielectric resonator antenna studies of Sr(ZrxTi1−x)O3 ceramics

Parida

Rout

Subramanian

et al. 2012

Journal of Alloys and Compounds

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“…The impedance bandwidth (return loss < −10 dB) were measured for all FRA using the following relation [76].…”

Section: Ferrite Resonator Antenna (Fra) Measurementsmentioning

confidence: 99%

MICROWAVE DIELECTRIC PROPERTIES OF NI0.2CUXZN0.8-XFE2O4 FOR APPLICATION IN ANTENNA

Kumar¹,

Gupta²,

Rout³

2014

PIER B

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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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“…A HP 8716ET network analyzer is employed to make the measurements [7][8][9]. From the resonant frequency of the TE 011 mode, the dielectric constant r and loss tan ␣ are determined ( Table 1).…”

Section: Hakki-coleman's Experimentsmentioning

confidence: 99%

“…First are presented in Section 2 the results of the HakkiColeman method [7][8][9] that is used for the determination of the dielectric constant r and loss tan ␣ of the dielectrics. Are also described the experimental setup of the DRA, as introduced by Long in Ref.…”

Section: Introductionmentioning

confidence: 99%

Dielectric resonator antenna: Operation of the magnetodielectric composites Cr_0.75Fe_1.25O₃ (CRFO)/Fe_0.5Cu_0.75Ti_0.75O₃ (FCTO)

Rocha

Freire

Costa

et al. 2006

Micro & Optical Tech Letters

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Accurate calculations of geometrical factors of Hakki-Coleman shielded dielectric resonators

Cited by 30 publications

References 13 publications

Structural, microwave dielectric properties and dielectric resonator antenna studies of Sr(ZrxTi1−x)O3 ceramics

Structural, microwave dielectric properties and dielectric resonator antenna studies of Sr(ZrxTi1−x)O3 ceramics

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

Dielectric resonator antenna: Operation of the magnetodielectric composites Cr_0.75Fe_1.25O₃ (CRFO)/Fe_0.5Cu_0.75Ti_0.75O₃ (FCTO)

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Accurate calculations of geometrical factors of Hakki-Coleman shielded dielectric resonators

Cited by 30 publications

References 13 publications

Structural, microwave dielectric properties and dielectric resonator antenna studies of Sr(ZrxTi1−x)O3 ceramics

Structural, microwave dielectric properties and dielectric resonator antenna studies of Sr(ZrxTi1−x)O3 ceramics

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

Dielectric resonator antenna: Operation of the magnetodielectric composites Cr0.75Fe1.25O3 (CRFO)/Fe0.5Cu0.75Ti0.75O3 (FCTO)

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Dielectric resonator antenna: Operation of the magnetodielectric composites Cr_0.75Fe_1.25O₃ (CRFO)/Fe_0.5Cu_0.75Ti_0.75O₃ (FCTO)