This paper presents modeling of annular patch antenna. The S and Z parameters of an Annularpatch Microstrip antenna are investigated and optimization. The optimization is performed byvarying the inner and outer radius of annular Ring. The impedance and radiation characteristicsof annular patch antenna are examined and compared. It is able to achieve a return loss lessthan -36 dB...

A simple, compact, slot loaded stacked wideband microstrip patch antenna is presented in this communication. The radiating element consists of a rectangular patch with a Tshaped slot and is fed by a 50 Ω microstrip line. The proposed antenna is simulated using IE3D software, 12.32 version of Zeland. The simulated results show that the antenna can exhibit wideband characteristics. The impedance ...

Novel dual-band WLAN antenna system with integrated band-select filter is designed. This integrated antenna design system provide VSWR 2:1 for both 2.4–2.5 GHz and 4.9–5.85 GHz with omni-directional radio patterns. Based on these features, a novel architecture for a dual-band WLAN radio Front-End in portable devices can be achieved. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: ...

This paper describes the analysis and design of a class of square spiral microstrip antennas for broad frequency band and multi-frequency operations by adding suitable tuning elements in a single structure. The simulation and modeling of these configurations have been done using Ansoft HFSS software. The resonant frequencies and dimensions are computed from the cavity model of square patch. The...

In this paper an rectangular patch with parasitic stub whose edge have been cut , with two slots near the feedline has been proposed. The antenna is designed using HFSS software. The designed antenna shows wideband characteristics having simulated bandwidth of 96 %.The overall dimension of the antenna are 35×35×1.6 mm 3 .This antenna obtained maximum gain of 9.55dB having VSWR is less than 2. K...

Meander line antenna (MLA) is an electrically small antenna which poses several performance related issues such as narrow bandwidth, high VSWR, low gain and high cross polarization levels. This paper describe the design ,simulation and development of meander line microstrip antenna at wireless band, the antenna was modeled using microstrip lines and S parameter for the antenna was obtained. The...

Circularly-polarized antenna is built based on a new SIW (substrate integrated waveguide)structure which contains cavity-backed resonator and a conventional polarized ring with twosquare slits in inner and outer ring that differ 90° at position and is proposed for right-handedcircular polarization (RHCP) and fabricated in two separate layers. A broadband impedancebandwidth of 13.9% and a RHCP a...

In this paper, a novel compact broadband antenna at UHF frequencies is presented with canonical shapes. Hemispherical, conical and cylindrical shapes have all been considered for configuration. The designed provides an instantaneous frequency range from 370 to 5,000 MHz omnidirectional characteristics. was simulated in CST Microwave Studio, fabricated evaluated; the results are presented. measu...

The present Jefferson Lab Free Electron Laser window requirements were used to develop a RF window design. These requirements include 1.497 GHz as the design frequency, and require the window to pass higher modes that originate in the cavity. The VSWR should be less than 1.1:1 at the design frequency and no greater than 1.5:1 at frequencies up to 2.2 GHz. The finite element method was used with...

This paper presents a compact tri-band antenna with double winding structures for 3G/4G/5G base station applications. The proposed design structure fed by coplanar waveguide (CPW) reduces the installation space and mutual coupling between close frequency operation bands suitable band can be configured step-up step-down transformer using on either side of central resonator an ability to attain r...