In this paper a monopole antenna for WLAN and WiMAX frequencies is proposed. The given antenna is composed of a rectangular patch monopole antenna having an E-shaped slot with two backward slits on the substrate and a defected ground plane. The antenna exhibits single band, which creates an impedance bandwidth of 2 GHz for the working band of 4-6 GHz. The various characteristic parameters like ...

Some useful features of microstrip patch antennas are low profile, low weight and easy fabrication. However this type of antenna suffers from having a low gain, caused by propagation surface waves. In this paper, a new near zero refractive index metamaterial (MTM) unit cell is designed and fabricated as a superstrate over a Rectangular Microstrip Patch Antennas (RMPA). In order to obtain a maxi...

This study presents a low-cost, compact, flexible, and wideband wearable antenna for different wireless body area network (WBAN) band applications, covering medical of 2.4 GHz, industrial, scientific, 2.45 WiMAX 3.5 local 5.2 GHz. The final topology is obtained by hexagonal microstrip radiator patch fabricated on commercially available low-cost photo paper substrate defected ground plane below ...

The thesis demonstrates the design of high frequency SiGe bipolar integrated power amplifiers (PAs) for mobile communication terminals with the support of electromagnetic (EM) simulation. Three single-ended PA designs for mobile terminals operating up to 6GHz have been designed , realized and measured. The realized amplifiers fulfill the assumed requirements in terms of overall performance main...

This paper focuses on a tutorial overview of defected ground structure (DGS). The basic conceptions and transmission characteristics of DGS are introduced and the equivalent circuit models of varieties of DGS units are also presented. Finally, the main applications of DGS in microwave technology field are summarized and the evolution trend of DGS is given.

A proper antenna to couple to a microstrip Microwave Kinetic Inductance Detector (MKID) is designed and simulated. A twin-slot microstrip-fed inline antenna is designed for frequency band of 600-720~GHz integrated with an elliptical lens and coupled to the MKID. A systematic design procedure for design of such antenna with microstrip inline feeding is presented. Whole structure of lens and twin...

This paper presents the increase in bandwidth of a Microstrip Antenna using a simple slotted structure fed by Microstrip line. The main aim of proposed work is to obtain a large bandwidth antenna with reduced size. The proposed microstrip antenna has a wide bandwidth covering the range from 1.806-2.978 GHz. By using simple Microstrip Line feed wide bandwidth of 48.99% has been achieved. The pro...

<span>This paper presents a bandwidth enhancement of dual-band bi-directional rectangular microstrip patch antenna. The novelty this work lies in the modification conventional microstip antenna by using combination two techniques: complementary split ring resonator (CSRR) and defected structure (DPS). was studied investigated via computer </span><span>simulation technology (CS...