Sophisticated technology is commonplace in most hospitals and increasingly mobile devices are being used in hospitals by clinical staff. Although the growth in mobile device usage in hospitals has the potential to contribute to better health and medical services delivery, nurses and doctors are still very reliant on paper-based information. Much of the research reported to date has focused on t...

Introduction: The increasing use of electromagnetic field generators in our daily life in one hand and on contradictory reports on the effects of their waves on public health on the other hand encourages scientists to do more and more research work in this field. One of the most important topics is the study of gene defect due to microwave radiation. Materials and Met...

The effects on health by mobile radiations have been subject of debate for a long time. Mobile phones emit electromagnetic radiations in the microwave range (300 MHz [0.3 GHz] and 300 GHz). According to International Agency for Research on Cancer, the mobile radiations are classified as Group-2B possibly carcinogenic radiations i.e. there “could be some risk” of carcinogenicity.1 At the same ti...

Microwave circuits are indispensable for mobile and multimedia communication. However, these circuits are very difficult to design, because of the nature of distributed-constant circuits in the microwave range (i.e., over 1 GHz). These circuits are also difficult to adjust for optimum performance, even for experienced engineers. These related problems make development costs of microwave circuit...

The exponentially-growing mobile data traffic imposes significant demands on the capacity of the mobile network. Fiber optic and microwave links are two main solutions for the mobile backhaul network, which provides connectivity between radio base station (RBS) sites and the switch sites. As compared to fiber, a microwave solution is much easier to deploy, however, its capacity is lower. This t...

in densely populated areas. A typical mobile-backhaul network has thousands of hops, and operators must be able to increase microwave capacity without having to change frequency planning and replace equipment across their entire network. This article reviews current and future microwave solutions with the potential for Gbps backhaul capacity levels, for rural and urban areas. The solutions pres...

The increasing use of mobile phone communication has raised concerns about possible health hazard effects of microwave irradiation. We investigated damage and differentiation of PC12 mutant cells (PC12m3 cells) caused by microwave irradiation. The frequency of neurite outgrowth induced by 2.45 GHz (200 W) of microwave irradiation was approximately 10-fold greater than that in non-irradiated con...

The development of a small electrical antenna plays an important role in the rapidly growing mobile communication market. This paper presents the design of a novel small and wideband planar inverted F-antenna that simultaneously covers the GSM900/GPS/ DCS1800/DCS1900/IMT2000/WLAN/DMB service bands. A very wide impedance-bandwidth characteristic was achieved by optimizing both the distance betwe...

Paper presents a Neural Network Modelling approach to microwave LNA design. To acknowledge the specifications of the amplifier, Mobile Satellite Systems are analyzed. Scattering parameters of the LNA in the frequency range 0.5 to 18 GHz are calculated using a Multilayer Perceptron Artificial Neural Network model and corresponding smith charts and polar charts are plotted as output to the model....