This paper will summarized the different size of opening width and length of the slot flare Vivaldi Antenna. The different size of opening width and length will bring effects on the VSWR and S11. The Vivaldi Antenna is designed to cover from 2 to 18 GHz by using the CST Microwave Studio Software. Then these antennas are constructed using RT/Duroid 5870 which have dielectric constant r 2.33. T...

A new kind of double short strip and single-side micro strip type antenna architecture to develop a frequency reconfigurable annular slot antenna. The design and characterization of this "reconfigurable antenna (RA) annular slot" which was built on a microwave laminate TMM10i Rogers (permittivity=9. 8, loss tangent=0. 002), are presented in this paper. By increasing and decreasing the...

This paper describes an easily manufactured, reducedsize, active receiving antenna for automotive applications, which increases short-range wireless detection in the 315-MHz band. This compact antenna has an advantage over currently available antennas because can be hidden in a vehicle’s interior. The active antenna consists of a low-noise amplifier coupled to a low-profile planer meanderline p...

In this paper capacitive fed rectangular patch Microstrip antenna loaded with I-shape slots is developed. The model of Antenna uses the capacitive feed strip which is fed by coaxial probe using equivalent circuit approach. The proposed antenna has the impedance bandwidth of 58% in the frequency range 3.9GHz to 7.14GHz which shows wideband characteristics. Gain is almost constant in the entire b...

Abstract—This paper presents a novel design of a microstrip fractal antenna based on the use of Sierpinski triangle shape, it’s designed and simulated by using FR4 substrate in the operating frequency bands (GPS, WiMAX), the design is a fractal antenna with a modified ground structure. The proposed antenna is simulated and validated by using CST Microwave Studio Software, the simulated results ...

In this paper, we have simulated a single-pin-shorted microstrip line fed three-dielectric-layer (with different permittivity and thickness) rectangular patch microstrip antenna for all those communication systems whose limited antenna size is premium. Low permittivity hard foam has been used as one substrate to achieve wide bandwidth. The simulation of this proposed antenna has been performed ...

This paper shows the design of a fractal patch antenna, which uses a unique fractal geometry known as Pythagoras tree with co-planer waveguide (CPW) feeding. The antenna has been designed for dual band operation at the WLAN/WiMAX (2.4 GHz) and WiMAX (3.5 GHz) for ultra-wide bandwidth applications. The antenna was simulated using CST Microwave Studio. The fabricated antenna’s measurement results...

An easily manufactured, reduced size, symmetrical printed meander dipole antenna for remote keyless entry (RKE) automotive applications in the 315 MHz frequency band is proposed. The efficiency and directionality of this symmetrical antenna is estimated and compared with the efficiency and directionality of an asymmetrical antenna. Numerical and experimental results are presented. © 2006 Wiley ...

Using numerical and experimental techniques, a wideband, low-Q, electrically small antenna design is characterized as a function of frequency and the relati e phasing between antenna elements. The antenna demonstrates wideband operation, with a radiation Q approximately a factor of 20 below the Q-limit established by Chu for electrically small, omnidirectional antennas. 2000 John Wiley & Sons, ...

The Sky Net project proposes a mobile base transceiver station (BTS) for mobile communication service from airborne. In the preliminary study, a Microwave AirBridging (MAB) system is established on an Ultra-Light Aircraft (ULA) to offer relay mobile communication. In order to maintain sufficient Quality of Service (QoS) data-link, microwave system needs to establish critical Line-of-Sight (LoS)...