The cylindrical geometry can offer certain desirable antenna characteristics that are not provided by planar elements. In this paper, a three-element cylindrical conformal array antenna has been presented as a candidate for use in wireless communications and Radio Frequency Identification (RFID). Each element in the array is a microstrip fed rectangular patch antenna designed to resonate at 2.4...

The minimization of elements in a non-uniform antenna array is critical in some practical engineering applications such as satellite and mobile communications. However, due to the complexity in the synthesis of an antenna array, the available techniques are not equally successful for reducing the element number of a nonuniform antenna array with as few elements as possible with respect to both ...

Biomimetic antenna arrays inspired by the fly Ormia ochracea showed a promising improvement of angle estimation capabilities radar sensors. So far, there is usually loss output power associated with this decreasing detectability weak targets. In paper, an electronically switchable two-element biomimetic array presented for first time. This provides possibility to switch between mode enhanced ph...

High-gain and low-profile antennas are required for high-speed wireless communication systems and mechanically-scanning automotive radars in the millimeter-wave band. Waveguide antenna is one of the most attractive planar antennas for such millimeter-wave systems because of its low loss and high efficiency characteristics in high frequency band. Travelling-wave excitation is more effective for ...

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...

Principle, control theory, and application of the ESPAR (Electrically Steerable Parasitic Array Radiator) antenna are introduced. A typical ESPAR antenna consists of monopole or dipole elements, one of which is the radiator (fed element) and the others are the parasitic radiators with variable reactance devices loaded on them. It can provide a lower-cost solution as an adaptive array antenna or...