A highly accurate, analytic quasi-static model of a microstrip over a semiconductor layer has been developed. The model agrees with full-wave calculations in all three modes of propagation (skin-effect, slow wave, and dielectric quasi-TEM), for both the attenuation constant α and the propagation constant β over a very wide range of dimension, substrate conductivity, and frequency. To achieve th...

The electromagnetic frequency spectrum is divided into different sub-frequency bands. These bands are allocated for applications. In these days, devices operating in multiple provide significant advantages. Devices require antenna structures to operate Microstrip antennas have become prominent with their small size, portable and easy integration other systems. this study, microstrip structure w...

in this article, the linear array (with 20 elements in the horizontal orientation) of microstrip antenna is examined with horizontal polarization. the set includes three microstrip substrates. there is a power network in two lower substrates and microstrip patches in the upper substrate. excitation of patches has been done as coupled through the power network in two lower substrates. using the ...

A Microstrip Patch Antenna is a type of radio antenna with a low profile, which can be mounted on a flat surface. It is a narrowband, wide-beam fed antenna fabricated by etching the antenna element pattern in metal trace bonded to an insulating dielectric substrate such as a printed circuit board with a continuous metal layer bonded to the opposite side of the substrate which forms a ground pla...

---This paper proposes a technique which improves Directivity and control of Beam-Steering by including metamaterial surfaces onto microstrip patch antenna superstrate used for wireless communication applications. Metamaterials are designed with Artificial Magnetic Conductor (AMC), inductive and capacitive planar structures. These structures allow obtaining Partially Reflective Surfaces (PRS). ...

Conventional microstrip antennas in general have a conducting patch printed on a grounded microwave substrate, and have the attractive features of low profile, light weight, easy fabrication, and conformability to mounting hosts [1]. However, mi-crostrip antennas inherently have a narrow bandwidth, and bandwidth enhancement is usually demanded for practical applications. In addition, applicatio...

An accurate model named as the Modified Wolff Model (MWM) is presented as an efficient CAD tool for determination of resonant frequency of the dominant and higher order modes under the multi-layer condition in thin and thick circular microstrip patch antennas. The effects of dielectric cover on the resonant frequency obtained from MWM have been compared against the result of theoretical method ...

Superconducting devices are known to produce nonlinear effects. In planar structures, these nonlinearities depend on the current distribution on the strip, which definitely depends on the structure of device. This paper used a numerical method based on 3D-FEM to obtain the current distribution in the open-ends and gaps in the superconducting microstrip structures. This is used to present the no...