Microstripline Fed Cylindrical Dielectric Resonator Antenna With a Coplanar Parasitic Strip

Kumar, A. V. Praveen; Hamsakutty, V.; Yohannan, Jaimon; Mathew, K. T.

doi:10.2528/pier05121301

Cited by 38 publications

(30 citation statements)

References 10 publications

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“…For metal films deposited on a flexible polymer substrate, coaxial line perturbation method has good performance [2]. Whereas for the magnetic thin films deposited on rigid substrate, the planar transmission-line (i.e., microstrip [3][4][5]) methods are more suitable. The reason is that the thin film materials can be easily loaded in the measurement fixture.…”

Section: Introductionmentioning

confidence: 99%

Measure the Complex Permeability of Ferromagnetic Thin Films: Comparison Shorted Microstrip Method With Microstrip Transmission Method

Wu¹,

Tang²,

Xu³

et al. 2009

PIER Letters

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Abstract-In this paper, two broadband measurement methods, shorted microstrip method and microstrip trnasmission method, are discussed, and the complex permeability of ferromagnetic thin films is measured from 100 MHz to 18 GHz. The S-parameters of the two measurement fixtures are measured by vector network analyzer (VNA). The perturbations of the thin film loaded in the measurement fixture are analyzed; the discontinuity between coaxial and microstrip is considered; the effective permeability is deduced from measured Sparameters; the permeability of ferromagnetic thin films is extracted from effective permeability by using conformal mapping. The results show that the experimental results agree with the theoretical ones closely, and higher measurement sensitivity and accuracy are achieved by using shorted microstrip method.

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Section: Introductionmentioning

confidence: 99%

Measure the Complex Permeability of Ferromagnetic Thin Films: Comparison Shorted Microstrip Method With Microstrip Transmission Method

Wu¹,

Tang²,

Xu³

et al. 2009

PIER Letters

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“…The dielectric resonators antenna (DRA) has received wide attention for its virtues of high radiation efficiency [5], low profile and compact size [6] in recent twenty years. DRAs of diverse shapes also have been widely researched.…”

Section: Introductionmentioning

confidence: 99%

A Novel Compact Three-Port Dielectric Resonator Antenna With Reconfigurable Pattern for Wlan Systems

Liu¹,

Wei²,

Liu³

et al. 2014

PIER C

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Abstract-Splitting a cylinder dielectric resonator into four uniform quarters generates a new dielectric resonator antenna (DRA) shape, which is named a quarter volume of cylinder dielectric resonator antenna (QVCDRA) in the paper. On the basis, a novel compact three-port dielectric resonator antenna with reconfigurable radiation pattern is presented for WLAN systems at 5.2 GHz. A −10 dB impedance bandwidth of 16.20%, covering the frequency range from 4.75 GHz to 5.54 GHz, is obtained with an isolation of lower than −19 dB. The structure consists of three QVCDRAs that arrange evenly around Z axis, and as a result possesses the advantage of compact structure, wide impendence band and reconfigurable radiation patterns. The volume of the proposed three-port DRA without ground plane is only 0.0216λ 3 d (λ d is the dielectric wave length at the central operation frequency). The proposed antenna is analyzed in detail. Antenna prototype is fabricated and tested. The simulation and test results are in good agreement.

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“…A number of techniques, which have potential to be applied for the permittivity measurement of ferroelectric materials, have been developed [2,3]. Among these methods, the CPW structure is widely applied [4][5][6][7][8][9][10][11][12]. By measuring the S-parameter of the CPW, the characteristic impedance and propagation constant can be obtained, by which the effective permittivity determined.…”

Section: Introductionmentioning

confidence: 99%

A New Method to Avoid Crowding Phenomenon in Extracting the Permittivity of Ferroelectric Thin Films

Wu¹,

Tang²,

Xu³

et al. 2008

PIER Letters

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Abstract-In this paper, a new method is proposed to avoid crowding phenomenon in extracting the permittivity of ferroelectric thin films. Polynomial curve fitting technique is used to determine the filling factor while the thickness of the thin film is very small. Conformal mapping (CM) combining with partial capacitance approach (PTA) is used to obtain the relationship between the effective permittivity of multiplayer coplanar waveguide (CPW) and the permittivity of each layer. A CPW with a thin film layer is simulated and the permittivity of thin film is extracted, the results show that, by using the proposed method, the crowding phenomenon can be avoided successfully and the permittivity of thin films can be extracted accurately.

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Microstripline Fed Cylindrical Dielectric Resonator Antenna With a Coplanar Parasitic Strip

Cited by 38 publications

References 10 publications

Measure the Complex Permeability of Ferromagnetic Thin Films: Comparison Shorted Microstrip Method With Microstrip Transmission Method

Measure the Complex Permeability of Ferromagnetic Thin Films: Comparison Shorted Microstrip Method With Microstrip Transmission Method

A Novel Compact Three-Port Dielectric Resonator Antenna With Reconfigurable Pattern for Wlan Systems

A New Method to Avoid Crowding Phenomenon in Extracting the Permittivity of Ferroelectric Thin Films

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