In the wireless channel, fading can be coped with by using diversity techniques or by transmitting the signal over several independently fading channels and combining different signal at the receiver before demodulation and detection. Spatial diversity techniques are known to increase the system reliability without sacrificing time and bandwidth efficiency. However, due to the limitation of the...

1. Abstract: In mobile communications in urban area, it is a significant problem that blind spots of in the narrow street are caused by high buildings. In our previous works, a reflectarray antenna was developed to solve the problem [1]. However, the gain of reflectarray becomes very low when a very broad scattering angle is required. In this research, a new dual-antenna system is proposed, inc...

A Wideband Rectangular Dielectric Resonator Antenna (RDRA) is presented in this manuscript. The proposed RDRA designed for wideband body area network (WBAN) applications due to its compact size and characteristics. antenna can be effectively integrated with modern medical devices transmitting biological signals. WBAN attract variety of monitoring human health the domains such as sports, enterta...

This paper describes the development of a fully automated measurement software for antenna radiation pattern measurements in a Compact Antenna Test Range (CATR). The CATR has a frequency range from 2-40 GHz and the measurement hardware includes a Network Analyzer for transmitting and Receiving the microwave signal and a Positioner the motion of the Styrofoam column. The measurement process incl...

All radios, both transmitting and receiving signals, need an antenna. So the role of antenna is very important because can work as a transmitter or receiver, depending on application itself. For antenna, it hoped that cover wide area, so receiver access information in area well. With addition elements with modifications, will affect radiance. In this study, vertical 2 meter band x 5/8 using pha...

Recent advancements in iterative processing of channel codes and the development of turbo codes have allowed the communications industry to achieve near-capacity on a single-antenna Gaussian or fading channel with low complexity. We show how these iterative techniques can also be used to achieve near-capacity on a multiple-antenna system where the receiver knows the channel. Combining iterative...