Abstract
A comparative analysis of various reconfigurable and multiband antenna concepts is presented. In order to satisfy the requirements for the advanced systems used in modern wireless and radar applications, different multiband and reconfigurable antennas have been proposed and investigated in the past years. In this paper, these design concepts have been classified into three basic approaches: tunable/switchable antenna integration with radio-frequency switching devices, wideband or multiband antenna integration with tunable filters, and array architectures with the same aperture utilized for different operational modes. Examples of each design approach are discussed along with their inherent benefits and challenges.
Highlights
Wireless systems are designed for single predefined mission
This feature is achieved by utilizing antenna array systems that can be quickly adapted according to the mission
Thereby overall size, cost, and complexity of a system can be reduced while improving performance such as radar cross-section (RCS)
Summary
The antennas of these systems possess some fixed parameters such as frequency band, radiation pattern, polarization, and gain. Reconfigurable antennas (RAs) have gain tremendous research interest for many different applications, for example, cellular radio system, radar system, satellite communication, airplane, and unmanned airborne vehicle (UAV) radar, smart weapon protection. In radar applications, reconfigurability at antenna level is often needed for multifunctional operation. This feature is achieved by utilizing antenna array systems that can be quickly adapted according to the mission. A control over operating frequency, beam pointing direction, polarization, antenna gain, and so forth is required. This paper gives a comparative analysis of various concepts that has been utilized to design reconfigurable antennas
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