Surface admittance of circular microstrip antenna

Fujimoto, Takafumi; Taguchi, Mitsuo; Tanaka, Kazumasa

doi:10.1109/aps.1995.530113

Cited by 4 publications

(9 citation statements)

References 3 publications

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“…Although the electric current exists on the upper surface of the patch conductor in the outside region of the cavity, the electric current on the upper surface was neglected in the cavity model. In [3]- [5], however, the calculated input impedances agreed well with the measured data. The authors estimated that the electric current on the upper surface of the patch conductor didn't influence the input impedance of the MSA.…”

Section: Introductionsupporting

confidence: 70%

“…By subtracting the quasi-static terms from the integrands of Eqs. (35)- (41), the remaining integrands decay faster for larger k R [1], [3]. The poles associated with the surface waves exist for ∆ E = 0.…”

Section: Green's Functions In the Spectral Domainmentioning

confidence: 99%

“…The poles associated with the surface waves exist for ∆ E = 0. The contributions from the poles are evaluated analytically by means of the residue calculus technique [1], [3].…”

Section: Green's Functions In the Spectral Domainmentioning

confidence: 99%

“…The electric currents on the upper, lower and side surfaces of the patch conductor are denoted by J U , J L and J S , respectively. In the case of the thin patch conductor, the electric currents on the surfaces of the patch conductor follow closely the behavior of the corresponding eigenmode within the cavity bounded above and below by the conducting plates and on the side by the admittance wall [3]. Therefore, J U , J L and J S are expressed as…”

Section: Introductionmentioning

confidence: 99%

“…The authors have analyzed MSAs by using the cavity model [3]- [5]. In the cavity model, the MSA is divided into two regions.…”

Section: Introductionmentioning

confidence: 99%

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Characteristic Comparison between Electric Currents on Upper and Lower Surfaces of Patch Conductor in a Microstrip Antenna

Fujimoto

Tanaka²,

Taguchi³

2005

IEICE Transactions on Communications

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SUMMARYThe electric currents on the upper, lower and side surfaces of the patch conductor in a circular microstrip antenna are calculated by using the integral equation method and the characteristic between the electric currents on the upper and lower surfaces is compared. The integral equation is derived from the boundary condition that the tangential component of the total electric field due to the electric currents on the upper, lower and side surfaces of the patch conductor vanishes on the upper, lower and side surfaces of the patch conductor. The electric fields are derived by using Green's functions in a layered medium due to a horizontal and a vertical electric dipole on those surfaces. The result of numerical calculation shows that the electric current on the lower surface is much bigger than that on the upper surface and the input impedance of microstrip antenna depends on the electric current on the lower surface. key words: microstrip antenna, integral equation method, Green's function in layered medium, electric currents, input impedance

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Section: Introductionsupporting

confidence: 70%

Section: Green's Functions In the Spectral Domainmentioning

confidence: 99%

“…The poles associated with the surface waves exist for ∆ E = 0. The contributions from the poles are evaluated analytically by means of the residue calculus technique [1], [3].…”

Section: Green's Functions In the Spectral Domainmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The authors have analyzed MSAs by using the cavity model [3]- [5]. In the cavity model, the MSA is divided into two regions.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations