In this paper, a coplanar waveguide (CPW) fed hexagonal shape planar antenna has been considered for ultra-wide band (UWB). This antenna is then modified to obtain dual band rejection. The Wireless Local Area Network (WLAN) and Wireless Microwave Access (WiMAX) band rejections are realized by symmetrically incorporating a pair of L-shape slots within the ground plane as well as a couple of I-sh...

This paper presents a patch loaded slot antenna for super wideband (SWB) application. To obtain SWB characteristic, the proposed geometry combined rectangular and an overlying excited by trident shaped microstrip feed. It is observed that hybrid nature of effectively enhances impedance bandwidth up to 120%, combining resonance both slot. Besides, it investigated after converting conventional ta...

Over the years, Cognitive radio technology has dramatically influenced wireless systems in which antenna plays a significant role for interviewing spectrum sensing and underlay operations. An ultra-wideband (UWB) with extended dual notch band feature is proposed this work to meet requirements of cognitive radios without interference from crowded spectrum. The consists stair-stepped rectangular ...

a 40-day-old male holstein breed calf with a complaint of inability of moving the tongue in and out aswell as difficulties with breastfeeding was referred to the veterinary clinic. a notch in the middle of thetongue tip was evident during oral examination. in addition, a thin tissue band between the ventral surface of the tongue and floor of the oral cavity was seen in the calf. a diagnosis of ...

A planar elliptic broadband antenna with reconfigurable dual stop-bands performance was successfully designed and performed for multi-standard wireless communication systems. The proposed antenna consists of a broadband micro-strip fed printed monopole operating in the frequency range 0.75– 6GHz. The notch-band characteristic was obtained by printing two Open Loop Resonators (OLRs) on the front...

A coplanar waveguide (CPW) fed ultra-wideband (UWB) antenna with dual notched band characteristics is presented in this paper. The circular wide slot and circular radiation patch are utilized to broaden the impedance bandwidth of the UWB antenna. The dual notched band functions are achieved by employing two stepped impedance resonators (SIRs) which etched on the circular radiation patch and CPW...

Low-cost, compact, circular planar dipole UWB antennas have been designed, based on the ‘two-penny dipole’. One of the dipole arms has been integrated with the ground plane of a microstrip transmission line, the strip being connected to the other dipole arm. The use of microstrip in stead of stripline technology hardly degrades the radiation characteristics, but simplifies the antenna architect...