SWITCHABLE LOOP-LOADED PRINTED DIPOLE ANTENNA WITH A BALUN/FEED STRUCTURE
Adnan Sondas, Mustafa H. B. Ucar, Yunus E. Erdemli
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
Volume: 54, Issue: 1, 1 January 2012
printed dipole antenna, loop elements, switching, frequency tuning, PIN diode
A switchable loop-loaded printed dipole antenna is introduced for a frequency-tuning operation. Two loop elements with extensions are placed asymmetrically at each side of a twisted dipole excited by a balun/feed vertically placed underneath the dipole. PIN diodes are used between each loop element and its extension to achieve switchable antenna operation for 3 and 5.5 GHz bands. Simulated and measurement results are presented to demonstrate the proposed tuning performance.
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