In this paper a broadband radio frequency identification (RFID) tag antenna for the ultrahigh-frequency (UHF) band is designed. The proposed antenna consists of a first-order Hilbert fractal structure and a spiral structure. In order to ensure the conjugate matching between the tag antenna and the electronic chip, a T-matching structure is employed. The interaction between two radiating element...

A novel ‘T’ square wideband fractal antenna is proposed for satellite communication. The Wideband achieved through the design and CPW feed. At first, a conventional square-shaped patch designed. Then replaced by Type-I to achieve wideband. Finally, Type-II with an L-Shaped boundary used enhance bandwidth greater extent. gain of ranges from 4 dB 6.3 entire frequency range 6.2 GHz 14 GHz. radiati...

The growing demand of wireless services requires the definition of new standards able to provide an increased degree of mobility for the end user and a higher speed of data transmission. Among emerging standards, one of the most promising is the IEEE 802.16 Wireless Metropolitan Area network Air Interface (generally called Wimax).In last few decade the miniaturization led antenna to be conforma...

This paper presents the analysis of novelistic fractal optical antenna arrays in a conceptual manner. Fractal antennas are array antennas with converging and diverging growth of basic element or elements for multi-wideband capturing of the electromagnetic waves. Most of these antennas relay on two components for their characteristics. First one is the basic stage shape and second one is the num...

This paper presents a compact micro Snowflake fractal radiating antenna. The antenna supports two ultra bandwidth of 6.55GHz has been achieved from 3.4892GHz to 10.0392 10.9013GHz to 16.3989GHz). It is fed by a 50 simulation was performed by Computer Simulation High Frequency Structural Simulator (HFSS characteristics for UWB applications.

A new shaped circularly polarized dielectric resonator antenna (CP DRA) is studied with branch-line coupler and log-periodic balun for the GPS application. Since the coupler and balun are located under the DRA, it does not increase the footprint of the antenna, as a result the system is very compact. Two configurations are considered in this paper. In the first configuration, an external 50Ω lo...

A wideband deltoid leaf fractal antenna is proposed for 5.8 GHz commonly used in industrial scientific and medical (ISM) wireless local area networks (WLAN) applications. microstrip patch antennas designed with shape radiating element. Using a shape, it possible to increase the perimeter of design thus reduce overall dimensions antenna. circular ring slot made on shaped radiator, way that disc ...

Theoretical limits for the capacitance density of lateral flux and quasi-fractal capacitors are calculated. These limits are used to investigate the efficiency of various capacitive structures such as lateral flux and quasi-fractal structures. This study leads to two new capacitor structures with high lateralfield efficiency. Simulation and experimental results demonstrate higher capacity and s...

A low-profile microstrip planar monopole antenna with triple-band operation for WiMAX and WLAN applications is proposed. The antenna has a simple structure which consists of a rectangular radiation patch with an L-shaped slot and an inverted L-shaped stub extending from the ground plane. By etching an L-shaped slot on the rectangular radiation patch, the antenna can excite two resonant modes. T...

A compact ultra wideband (UWB) monopole antenna with dual band-notched characteristics is presented. The antenna consists a square radiating patch with L shaped slots on the radiation patchand a U shaped slot as the feedline. By cutting two C-shaped slots in the ground plane, additional resonance is excited and hence much wider impedance bandwidth can produced, especially at the higher band, wh...