Title :
Shorting strap tunable single feed dual-band stacked patch PIFA
Author :
Karmakar, Nemai Chandra
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
fDate :
6/25/1905 12:00:00 AM
Abstract :
A single feed dual-band stacked patch planar inverted-F antenna (PIFA) is integrated with an RF switch array at one side of its shorting straps to make a tunable PIFA. The L-band switch yields 0.45 dB insertion loss (IL) and 10 dB isolation bandwidth (BW) of >100% at 1.2 GHz. The tunable PIFA yields >100% frequency tunability BW at the 800 MHz band and /spl sim/5% BW at the 1.9 GHz band. The measured radiation patterns are nearly omni-directional and yield a gain of 2.2 dBi at 800 MHz and 4.5 dBi at 1.9 GHz.
Keywords :
UHF antennas; antenna feeds; antenna radiation patterns; microstrip antennas; microwave switches; mobile antennas; mobile radio; multifrequency antennas; tuning; 0.45 dB; 1.2 GHz; 1.9 GHz; 2.2 dB; 4.5 dB; 800 MHz; L-band switch; PIN diode switches; RF switch array; dual-band PIFA; frequency tunability; insertion loss; isolation bandwidth; mobile communications antennas; planar inverted-F antenna; radiation patterns; shorting straps; single feed antenna; stacked patch PIFA; tunable PIFA; Antenna arrays; Antenna feeds; Antenna radiation patterns; Bandwidth; Dual band; Gain measurement; Insertion loss; L-band; Radio frequency; Switches;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2003.812240
