Hybrid-mode analysis of a microstrip-slot resonator

Abstract

A hybrid-mode analysis is presented for obtaining resonant frequencies of a microstrip resonator with a tuning slot; namely, a microstrip-slot resonator, which has a microstrip and a tuning slot on each side of the substrate, respectively, and whose special case is a microstrip resonator. The analysis is based upon Galerkin's method in the Fourier transform domain. The sensitivity of the solution is investigated with respect to the basis functions. The computed resonant frequencies, using simple basis functions, are compared with the experimental values on alumina substrate in the frequency range 3-7 GHz.

Rigorous full‐wave analysis of rectangular microstrip patches over ground planes with rectangular apertures in multilayered substrates that contain isotropic and uniaxial anisotropic materials

“…Such advantages include weak parasitic radiation in the useful direction with respect to conventionally fed antennas and optimal performance for both the feeding network and antenna element. In addition, the presence of apertures in the ground planes of microstrip patches adds new design parameters that can be used as a way to tune their resonant frequencies [3,4] without modifying the patch itself. A rectangular aperture introduces two physical parameters: its length and width.…”

“…Since the presence of apertures in the ground planes of microstrip patches affects the resonant properties of microstrip-patch antennas and microstrip-patch circuit components, the development of an accurate theoretical method for predicting the aperture effect is of considerable interest. The effect of ground-plane apertures on microstrip patches was first studied by Kawano et al [3,4]. The full-wave analysis presented in [3,4] was unable to account for the effect of radiation damping encountered in microstrip antennas, since the considered structure was enclosed by shielding walls.…”

“…The effect of ground-plane apertures on microstrip patches was first studied by Kawano et al [3,4]. The full-wave analysis presented in [3,4] was unable to account for the effect of radiation damping encountered in microstrip antennas, since the considered structure was enclosed by shielding walls. The radiation damping gives rise to a complex resonant frequency, which provides information regarding the resonant frequency, quality factor, and half-power bandwidth of the patch antenna.…”

Numerical analysis of rectangular microstrip patch over ground plane with rectangular aperture

“…Since the presence of apertures in the ground planes of microstrip antennas a ects the resonant properties of these antennas, it is of considerable interest to develop an accurate theoretical method for predicting the aperture e ect. This e ect of ground-plane apertures on microstrip patches has been ÿrst studied by Kawano et al [3,4]. The full-wave analysis presented in References [3,4] is unable to account for the e ect of radiation damping encountered in microstrip antennas, since the considered structure was enclosed by shielding walls.…”

“…This e ect of ground-plane apertures on microstrip patches has been ÿrst studied by Kawano et al [3,4]. The full-wave analysis presented in References [3,4] is unable to account for the e ect of radiation damping encountered in microstrip antennas, since the considered structure was enclosed by shielding walls. The radiation damping gives rise to a complex resonant frequency, which provides the information of the resonant frequency, the quality factor and the half-power bandwidth of the patch antenna.…”