A Dielectric Resonator loaded Substrate integrated waveguide cavity backed slot antenna (SIDRA) is proposed for two slot polarizations and orientation. A SIW-fed cylindrical DRA using rectangular slot is used for obtaining bandwidth of about 5% at 6.15 GHz. For enhancing bandwidth, a plus shaped slot with bandwidth of about 8.80% and gain of 3.7 dB is proposed. The proposed antenna represents S...

Parasitic antennas are much lower in cost and complexity than conventional smart antennas. For this reason, they may be considered for use at the portable station. In this paper we study the capacity of a spacedivision-multiple-access (SDMA) system when n element switched parasitic antenna arrays (SPAA) are used for this purpose. As in [1], dynamic slot allocation (DSA) is used with a conventio...

Generally microstrip patch antenna (MPA) is used in modern communication devices and day-to-day communication is done through it. Study of literature of past few year shows that, the leading work on MPA is design compact size broadband microstrip antenna, but inherently MPA have narrow bandwidth so various techniques are engaged to enhance bandwidth. This review paper demonstrates some commonly...

In this paper a microstrip antenna on a suspended substrate with capacitive feed is presented. capacitive feed is created by a slot within the rectangular patch around the feed point. The proposed antenna exhibits a much higher impedance bandwidth of about 47% (S11 < −10 dB). Effects of key design parameters such as the air gap between the substrate and the ground plane, the gap width between r...

In this paper a new UWB textile slot antenna has been designed with high precision. This work aimed to makecloser steps towards real wearability by investigating the possibilities of designing wearable UWB antenna wheretextile materials are used for the substrate as well as the conducting parts of the designed antenna. The antenna iscomposed of three textile layers: the top and bottom are condu...

This paper covers two aspects of microstrip antenna design. The first is the analysis of trapezoidal patch microstrip antenna with V-shaped slot which operate at the centre frequency of 5.5 GHz. The second aspects are the analysis and design of inverted V-shaped slot cut trapezoidal microstrip antenna operates at centre frequency of 4.1 GHz. The simulation has been done through IE3D simulator. ...

In this paper, a novel compact frequency-reconfigurable monopole antenna with switchable symmetric slot structure is presented. The frequency-reconfigurable capability of the antenna is achieved by using a switchable slotted structure on the ground plane. The designed antenna has a simple structure and compact size of 40X40 mm . The antenna, which supports most applicable frequency bands above ...

This paper presents the design of a multiband square patch antenna with Sierpinski gasket slot in top surface of substrate and Koch loop shape slot in ground. This antenna has been designed to operate within 0.1GHz to 3 GHz frequency range. The antenna has been simulated using IE3D simulator software. The experimental result of the proposed antenna exhibits the five bands. Keywords-Square Patch...

PURPOSE Design and validate an efficient dual-slot coaxial microwave ablation antenna that produces an approximately spherical heating pattern to match the shape of most abdominal and pulmonary tumor targets. METHODS A dual-slot antenna geometry was utilized for this study. Permutations of the antenna geometry using proximal and distal slot widths from 1 to 10 mm separated by 1-20 mm were ana...

This paper covers the design and optimisation of fractal antennas for RFID application at microwave frequencies. Basing on the Sierpenski gasket antenna and slot technique we propose a novel structure of Sierpenski fractal antenna which is named Sierpenski Slot antenna. The propose structure present a reduction of size by more than 52% which is very important in the case of TAG RFID antenna.