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Development of a Handset Adaptive Antenna Using Phased-Array of Switched-Beam Elements

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1 Author(s)
Monai Krairiksh ; Faculty of Engineering and Research Center for Communications and Information Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand. Email: kkmonai@kmitl.ac.th

This paper presents the development of a handset adaptive antenna using a constant modulus algorithm (CMA). The antenna is a switched-beam phased array antenna which can assist initialization of CMA. The method to improve convergence property of CMA exploits a beam with maximum received power from several switched-beams of the antenna as an initial beam. A square patch of one wavelength width provides a bidirectional pattern that beam switching can be accomplished by switching a feeding probe position. A single stub is designed to match the input impedance. The signal processing unit is implemented on Field Programmable Gate Array (FPGA). Simulation results in term of signal-to-interference plus noise ratio (SINR) are shown to validate that the proposed antenna has a good performance and is suitable for installation on a handset.

Published in:

Antenna Technology: Small Antennas and Novel Metamaterials, 2008. iWAT 2008. International Workshop on

Date of Conference:

4-6 March 2008