J. William

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Aflatoxins (AF) are a group of mycotoxins. AF exposure causes acute and chronic adverse health effects such as aflatoxicosis and hepatocellular carcinoma in human populations, especially in the developing world. In this study, AF exposure was evaluated using archived serum samples from human immunodeficiency virus (HIV)-seronegative participants from two(More)
A Novel coplanar waveguide (CPW) fed Ultra Wideband (UWB) slot antenna is presented in this paper. The antenna consist a rectangular slot with cross type structure as a tuning stub with CPW feed. The CPW feed is designed for 50 Ω impedance. The physical size of the proposed antenna is 19 mm(L)×20mm(W)×1.6mm(T) and the electrical size is(More)
Emergency Medical Services (EMS) are facing increasing pressures in many nations given that demands on the service are rising. This article focuses in particular on the operations of the Welsh Ambulance Service Trust (WAST), which is the only organisation that provides urgent paramedical care services on a day-to-day basis across the whole of Wales. In(More)
Design and analysis of a new coplanar waveguide (CPW) fed ultra wideband (UWB) slot antenna is presented in this paper. The proposed antenna is simple, compact and low cost. The overall dimension of the antenna is 28&#x00D7;21&#x00D7;1.6 mm<sup>3</sup> and fed by 50&#x2126; coplanar waveguide. The parametric analysis of the antenna is done by using MoM(More)
A coplanar waveguide (CPW) fed Ultra Wideband (UWB) slot antenna with reconfigurable rejection bands is presented. Specific band of the rejection is achieved by placing switching diodes over the rectangular slot in the ground plane at a position of effective length of λ/2 for the center frequency of the rejection band. The rejection of WiMax, IEEE 802.11a(More)
A Quad-band bandpass filter for wireless RF devices is presented. The circuit is capable of serving multiple FDD and TDD bands of the 4G LTE standard. A microstrip transmission line is used to feed stepped impedance resonators for providing four bands in LTE spectrum. The proposed filter is simulated using IE3D simulator. The centre frequency and bandwidth(More)