The paper introduces two newly developed smart antennas, ESPAR antenna and ESMB antenna, for mobile wireless computing terminals and mobile stations. The configurations of these smart mobile terminal antennas at the operating frequency approximately over 2.4GHz are illustrated and the applications of using these smart antennas at mobile computing terminals and mobile stations are proposed. The ...

Wireless mobile communication systems will be more sophisticated and wide spread in future. This growth demands not only for capacity but also high quality of service and better coverage without increase in radio frequency spectrum allocated for mobile applications. Wireless systems used fixed antenna systems in the past, but space division multiple access systems use smart antennas. These smar...

Wireless mobile communication systems will be more sophisticated and wide spread in future .This growth demands not only for capacity but also high quality of service and better coverage without increase in radio frequency spectrum allocated for mobile applications. Wireless systems used fixed antenna systems in the past, but space division multiple access systems use smart antennas. These smar...

Mobile Ad hoc Networks (MANETs) have drawn considerable attentions of the researchers for the last few years. MANETs, consisting of mobile nodes, are self-organizing and self-configuring and hence can be deployed without any infrastructure support. MANETs also have some limitations including short-life, unreliability, scalability, latency, high interference, and limited resources. In order to o...

Fault diagnosis in antenna arrays implies locating the faulty or defective elements in the array. Smart antenna arrays use digital beamforming and allow for array failure corrections. The defective elements of such antenna arrays therefore need not be replaced unlike the traditional analog approach. The smart antennas can thus support cost-effective solutions instead of replacing the hardware. ...

Smart antennas can be used to improve the performance of various wireless communication systems. Recently researchers have considered their use in wireless packet-switched networks 1, 2, 3, 4, 5]. In 6], a single-beam system was described which employs a smart antenna basestation operating in carrier-sense (CSMA) mode. Performance improvements can be obtained since the antenna can dynamically p...

The use of smart antennas in wireless ad-hoc networks has garnered significant attention over the last few years. Given the unique capabilities of smart antennas, and how they can improve performance in a typically constrained ad-hoc network environment, the attention is with merit. However, not much light has been shed on wireless ad-hoc networks that have nodes with varying antenna capabiliti...

This paper presents practical design of a smart antenna system based on direction-of-arrival estimation and adaptive beam forming. Direction-of-arrival (DOA) estimation is based on the MUSIC algorithm for identifying the directions of the source signals incident on the sensor array comprising the smart antenna system. Adaptive beam forming is achieved using the LMS algorithm for directing the m...

Electronically Steerable Passive Array Radiator Antenna (ESPAR) is a smart antenna that can help to improve the performance and effectiveness of wireless network systems, especially in ad hoc networks. There are several benefits that can be attained by smart antenna, such as better range and coverage, increased capacity, multipath rejection and reduced expense. In this research, the antenna str...