Title :
Miniaturized tunable conical helix antenna
Author :
Zhu, Shuyuan ; Ghazaany, T.S. ; Abd-Alhameed, R.A. ; Jones, S.M.R. ; Noras, J. ; Suggett, T. ; Marker, S.
Author_Institution :
Sch. of Eng., Design & Technol., Univ. of Bradford, Bradford, UK
Abstract :
A miniaturized conical helix antenna is presented, which displays vertical polarization with electrically small dimensions of 10mm×10mm×45mm. The resonance of the antenna is made tunable by adding a variable digital MEMS capacitor load at the bottom of the helix, giving a tuning range of 316 MHz to 400 MHz. The antenna demonstrates considerable impedance matching bandwidth and gain over the entire tuning frequency band. Most importantly, the antenna is capable of compact, flexible and easy integration into a wireless device package or for platform installation.
Keywords :
UHF antennas; capacitors; conical antennas; impedance matching; micromechanical devices; antenna resonance; frequency 316 MHz to 400 MHz; impedance matching bandwidth; miniaturized tunable conical helix antenna; platform installation; tuning frequency band; variable digital MEMS capacitor load; vertical polarization; wireless device package; Antenna radiation patterns; Capacitors; Helical antennas; Loaded antennas; Micromechanical devices; Tuning; Electrically small antenna (ESA); omni-directional antenna; tunable antenna; vertical polarization;
Conference_Titel :
Radio and Wireless Symposium (RWS), 2014 IEEE
Conference_Location :
Newport Beach, CA
Print_ISBN :
978-1-4799-2298-7
DOI :
10.1109/RWS.2014.6830109
