In this paper, a novel multi-permittivity cylindrical dielectric resonator antenna for wideband application is presented. The multi-permittivity cylinder is formed by combining two different permittivity material sectors in such a way that each sector (with constant permittivity) is 90 degree apart. A direct microstrip line coupling terminated with T-stub at the open end is used to excite the m...

In this letter, a compact planar ultra-wideband mobile antenna with L-shaped extended ground stubs is presented. The proposed handset antenna consists of two planar meandered monopole radiating elements, i.e., main antenna and auxiliary antenna respectively, located at the diagonal corners of mobile phone printed circuit broad with standard size of 136 × 68mm2. Each radiating element is compose...

International Journals [1]. " Compact wideband antenna for 2.4 GHz WLAN applications " , M. [3]. " Microstrip-fed Dual band Folded Dipole Antenna for DCS/PCS/2.4GHz WLAN Applications "

In this paper, Space Time Adaptive Processing (STAP) applied on wideband signals from uniformly spaced real elements using Direct Data Domain Least Squares (DLS). Two antenna configurations are used: an array of dipole antenna (narrowband antenna) and an array of patch antenna (wideband antenna). A frequency transformation technique is used only for the case of narrowband antenna which transfor...

─ In the present work, a circular conformal array with wideband printed dipole antennas and wideband feeding network has been designed to obtain a fully constrained cosecant squared radiation pattern using particle swarm optimization (PSO) algorithm and mutual coupling compensation. Using the circular conformal design leads to a decrease of around 33% of the length of the array antenna compared...

M OBILE communications services are penetrating our society at an explosive rate. The major services that the second-generation mobile systems provide are limited to basic services (e.g., voice and low-bit rate data). We have entered the 21st century, when demands for a variety of wideband services (e.g., high-speed Internet access and the video/high-quality images transmission) will continue t...

With the advance of wireless communication systems and increasing importance of other wireless applications, wideband and low profile antennas are in great demand or both commercial and military applications. Multi-band and wideband antennas are also desirable in personal communication systems, small satellite communication terminals, and other wireless applications. Wideband antennas also find...

Microstrip realization of beam forming network integrated with dual-band antenna array on silicon substrate is presented. Design and implementation of broad band topologies of hybrid and phase shifter are discussed and further integrated to realize wideband 4× 4 Butler matrix. Proposed wideband Butler matrix is used to realize single-band and dual band antenna architectures on silicon substrate...

We generally categorize the approaches for ultrawideband antenna array design, and consequently propose simplified concepts for antenna arrays for a high-precision, ultra-wideband FMCW radar 2-D local positioning system to obtain robustness against multi path interference, perform angle of arrival analysis, as well as instantaneous heading estimation. We focus on low-cost and mechanical robust,...

In this paper, a compact ultra-wideband patch antenna with dual-band rejection is proposed. The proposed antenna filters 3.3-3.8 GHz WiMAX and 5.15-5.85 GHz WLAN by respectively rejecting these bands through a C-shaped slit and a λg/4 resonator. The λg/4 resonator is positioned as a pair, centered around the microstrip line, and a C-type slit is inserted into an elliptical patch. The impedance ...