Radiation characteristics of switchable ferrite microstrip array antenna

Dixit, Lata; Pourush, P. K. S.

doi:10.1049/ip-map:20000038

Cited by 25 publications

(14 citation statements)

References 3 publications

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“…This curve (Fig. 4) is plotted at 1500 Oe for LiTi-ferrite slab at SSPL Timarpur Delhi, on which microstrip patch antenna has been designed [6][7][8][9][10][11][12][13][14][15][16].…”

Section: Results and Calculationsmentioning

confidence: 99%

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GA optimization of cutoff frequency of magnetically biased microstrip circular patch antenna

Saxena

Khan

Pourush

et al. 2011

AEU - International Journal of Electronics and Communications

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“…This curve (Fig. 4) is plotted at 1500 Oe for LiTi-ferrite slab at SSPL Timarpur Delhi, on which microstrip patch antenna has been designed [6][7][8][9][10][11][12][13][14][15][16].…”

Section: Results and Calculationsmentioning

confidence: 99%

“…On the other hand, the extraordinary wave is a TE mode polarized parallel to the biasing direction with its phase propagation constant K e [6][7][8][9].…”

Section: Structure and Theory Of Antennamentioning

confidence: 99%

GA optimization of cutoff frequency of magnetically biased microstrip circular patch antenna

Saxena

Khan

Pourush

et al. 2011

AEU - International Journal of Electronics and Communications

Self Cite

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“…Whereas decreasing h, thus leads to a limitation of the antenna effectiveness, hence the reduction of its band-width. The reduction of surface waves, for the microstrip antennas printed on ferrites, has been discussed by many researchers [42][43][44][45][46]. Whereas in [47][48][49], electromagnetic band gap (EBG) structures, also known under the name of photonic crystals were carried out to reduce, and in certain cases, to eliminate the surface waves, which lead to an increase in the directivity and the bandwidth.…”

Section: ) Cmentioning

confidence: 99%

Surface Waves Investigation of a Bianisotropic Chiral Substrate Resonator

Zebiri¹,

Benabdelaziz²,

Sayad³

2012

PIER B

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Abstract-In this paper we studied the effect of a chiral-substrate bianisotropy on the surface waves of the microstrip resonator. The effective technique used to formulate the characteristic equations of the surface waves in a medium equipped with a complex anisotropy is presented and detailed. The equations concerning an evaluation of the cut-off frequencies are given in more detailed forms. A simple approximate formula for estimating the wave number of the surface mode TM 0 and TE 1 are obtained. An estimated maximum value of chiral slab thickness without the excitation of surface waves is given. All of our original results are compared with those published in the literature.

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“…For particular frequency limit, most of the power in the form of extraordinary wave resonance with lattice magnetic vibrations and converted into mechanical waves and little radiates into air. Under such condition the antenna become switch off, in the sense of effectively absent as radiator [1][2][3]. In the literature, artificial neural network (ANN) models have been built usually for the analysis of microstrip antennas for circular and equilateral triangle patch geometries for computing their resonant frequencies on given dielectric substrate.…”

Section: Introductionmentioning

confidence: 99%

Neural network analysis of switchability of microstrip rectangular patch antenna printed on ferrite material

Saxena

Khan

Pourush

et al. 2009

Int J RF and Microwave Comp Aid Eng

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A switchable microstrip rectangular patch antenna printed on ferrite substrate in the X-band is presented using general artificial neural network (ANN) analysis. The ferrite substrate offers a number of unique radiation characteristics including switchable and polarized radiations from a microstrip antenna with DC magnetic biasing. In such a case, for particular frequency most of the power is converted into magnetostatic waves and little radiates into air. Subsequently, the antenna behaves as switch off, in the sense that it effectively absent as radiator. Both synthesis and analysis are mainly focused on the switchability of antenna. In this work, radial basis function (RBF) networks are used in ANN models. Synthesis is defined as the forward side and then analysis as the reverse side of the problem. Here, the analysis is considered as a final stage of the design procedure, therefore, the parameters of the analysis ANN network are determined by the data obtained reversing the input-output data of the synthesis network. In the RBF network, the spread value was chosen as 0.01, which gives the best accuracy. RBF is tested with 100 sample frequencies but trained only for particular cutoff 15 sample frequencies.

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Radiation characteristics of switchable ferrite microstrip array antenna

Cited by 25 publications

References 3 publications

GA optimization of cutoff frequency of magnetically biased microstrip circular patch antenna

GA optimization of cutoff frequency of magnetically biased microstrip circular patch antenna

Surface Waves Investigation of a Bianisotropic Chiral Substrate Resonator

Neural network analysis of switchability of microstrip rectangular patch antenna printed on ferrite material

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