Printed circuit board antennas for Zigbee applications provide limited coverage in their real operating environment. Although these antennas are easy to integrate with transceiver IC's, their radiation patterns suffer deep nulls when these units are placed near metallic and/or ground surfaces or inside the same housing that affect radiation characteristics of antennas. We propose a simple, low-cost diversity antenna solution that utilizes two PCB antennas with different radiation pattern coverage. These antennas are designed in their real operating environment, which, in our case, over a metallic fence whose segments are smaller than one fifth of a wavelength. The switches are controlled by microcontroller by constantly monitoring reception levels after the signal is decoded. Antennas are built and verified for their performance and a computer algorithm is developed for control and switch mechanism based on received signal strength indicator.
5th Mosharaka International Conference on Communications, Propagation, and Electronics (MIC-CPE 2012)
Congress
2012 Global Congress on Communications, Propagation, and Electronics (GC-CPE 2012), 3-5 February 2012, Istanbul, Turkey
Pages
--1
Topics
Antennas Wireless Communication Systems
ISSN
2227-331X
DOI
BibTeX
@inproceedings{282CPE2012,
title={Diversity Antenna Design for ZigBee Applications},
author={Hilmi Kayhan Yilmaz, and Mehmet Ali Yesil, and Korkut Yegin, and Fahri Ayberk Bagci, and Tolga Çöplü},
booktitle={2012 Global Congress on Communications, Propagation, and Electronics (GC-CPE 2012)},
year={2012},
pages={--1},
doi={}},
organization={Mosharaka for Research and Studies}
}
