Abstract—This paper presents a novel fractal antenna structure proposed for UWB (Ultra – Wideband) applications. The frequency band 3.1-10.6GHz released by FCC (Federal Communication Commission) as the commercial operation of UWB has been chosen as frequency range for this antenna based on coplanar waveguide (CPW) feed and circular shapes fulfilled according to fractal geometry. The proposed an...

This paper presents a novel design of branch 3dB coupler, it is designed and simulated by using FR4 substrate at the operating frequency 2.45 GHz in the ISM “Industrial Scientific Medical” band. The design is based on two different models, the T-model and combinationalmodel (Tand π-model) in order to reduce the size and improve the performances. After a theoretical study on the use of open stub...

Abstract—This paper presents analysis and design of a wideband Wilkinson power divider for wireless applications. The design is accomplished by transforming the lengths and impedances of the quarter wavelength sections of the conventional Wilkinson power divider into U-shaped sections. The designed power divider is simulated by using ADS Agilent technologies and CST microwave studio software. I...

In this paper the design of a new multistandard antenna is proposed suitable for major cellular bands. A C-shaped radiator with a microstrip feed line is proposed which supports major cellular communication band like AWS, DCS, DECT, PCS, PHS, 3G, UMTS, DSR, Wi-Bro, ISM, and DMB in the range of 1.7-2.9 GHz. The designed antenna is simulated using CST Microwave Studio to achieve such wide frequen...

in this paper, a resonant slotted waveguide array antenna with circular boundary has been designed and simulated for mono-pulse airborne radar applications. the antenna parameters are:11% bandwidth in x-band (8.6-9.6ghz),vswr < 2, 38dbi directivity, sidelobes level of - 20db and 3-db beam-widths of 2.1degree. to design this antenna, it is divided into short sections (sub-arrays) each with a uni...

In this paper, we illustrate the RF design and measurements of a C-band prototype structure for an Ultra High Dose Rate medical linac. (1) Background: FLASH Radiotherapy (RT) is revolutionary new technique cancer cure. It releases ultra-high radiation dose rates (above 100 Gy/s) in microsecond short pulses. order to obtain high very time, accelerators with high-intensity currents (the mA peak c...

The development and improvement of the dual-band 802.11ac standard Wi-Fi wide bandwidth satellite communication devices are currently research subjects that have garnered significant interest. In this paper, double C-shaped two split-ring resonator (SRR) bounded unit cells were developed, which applicable for S, C, X band applications, including applications its effective medium ratio (EMR) 15....

This paper describes a pedagogical experiment in which a suite of novel blended learning strategies was used to replace the traditional role of design tutors in a first year architectural design studio. The pedagogical objectives, blended learning strategies and outcomes of the course are detailed. While the quality of the student design work produced by the blended learning design studio was i...

This paper presents a new design of a CPW-Fed multi bands planar antenna. This antenna can be integrated easily with passive and active elements. The proposed antenna is suitable to operate for GPS, PCS and WiMAX bands. Its entire area is 52.3x52.6mm2 and is employed on an FR-4 epoxy substrate and fed by a 50 Ohm coplanar line. The antenna parameters have been analyzed and optimized by using AD...