To satisfy requirements of 4G communication systems, an E-shaped microstrip antenna with L-probe is presented. In this design, E-shaped patch is introduced to expand the bandwidth by changing the current distribution, L-probe is introduced to increase the bandwidth by counteracting the inductance of the probe. The electrical property of the antenna is analysised using commercially available Fin...

In this paper, the design of a coaxial feed single layer rectangular microstrip patch antenna for IEEE802.11b application is presented. The proposed antenna is designed by using substrate FR4_epoxy having permittivity of about 4.4 and tangent loss of 0.013. The characteristics of the substrate are designed and to evaluate the performance of modeled antenna using HFSS v.11 EM simulator, from Ans...

In this paper, a dual frequency resonance antenna is analysed by introducing L-shaped slot in a semi circular patch, different parametric studies have allows and the results in terms of return loss and radiation pattern are given. The results show that dual wide bands are achieved and a better impedance matching for the upper and lower resonance are obtained. Also, it is observed that various a...

This paper analyzes the power loss of magnetically controlled reactor based on the basic theory of the electromagnetic field. In a variety of magnetic valve structure model as the object, physical simulation models of the reactor are built. Using Ansoft Maxwell simulation software, various magnetic valve structures of the reactor are studied by the analysis of the magnetic valve type reactor co...

A dual wideband CPW-fed slotted Koch snowflake fractal monopole, which is suitable for WLAN/WiMAX applications, is presented. The proposed antenna has been analyzed and designed with Ansoft HFSSTM v.11. Then an experimental prototype is fabricated and measured. It is compact with a total size of 41.5mm × 27 mm × 1mm (L × W × T ). Results of simulation and measurement indicate that the proposed ...

Given the existence of detent force, positioning accuracy permanent magnet linear synchronous motor (PMLSM) with an iron core worsens in its application field precision drive. To address this problem, a method is proposed to weaken force PMLSM V-shaped tooth-slot structure. The models including cogging and end are established theoretically. analytical expressions obtained by analysing ripple ru...

In this paper, the electromagnetic characteristics of a novel integrated multi-winding inductive filtering converter transformer, including two parallel-connected delta filter windings with zero impedance, are studied. First, based on Ansoft, 3D FEM model transformer is built according to its structural parameters and material characteristics. Next, external circuit connection established reali...

some analysis has been presented on a circularly polarized microstrip antenna with T slot configurations in detail. Here we will design a T-slot coupled circularly polarized microstrip antenna in the frequency 1.575 GHz. The upper patch i.e. the radiating patch would be circular. There is no closed form expression so that by using that expression the dimensions of the proposed antenna could be ...

Antenna is a significant component of wireless communication system. Radio Frequency Identification (RFID) is one of the activities of Automatic Identification (AUID) system which comes under wireless system. To track any object wirelessly in RFID system, antenna acts as the primary and critical component. Radio Frequency (RF) micromachining technology provides an innovative approach in the dev...

This paper introduces a new concept in RF MEMS switches intended for high RF signal power applications at millimetre-wave operation. The novel SPST switch architecture employs electrothermal hydraulic microactuators. Out-of-plane silicon levers, having spring action and latching mechanisms, have been designed to create an OFF-state gap separation distance of 250 μm between ohmic contact electro...