PIFA天线论文

Shorting Strap Tunable Single Feed dual-band stacked patch PIFA68

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, VOL. 2, 2003

Shorting Strap Tunable Single Feed Dual-Band Stacked Patch PIFA
Nemai Chandra Karmakar, Senior Member, IEEE
Abstract―A single feed dual-band stacked patch planar inverted-F antenna (PIFA) is integrated with a 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 800 MHz band and 5% BW at 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. Index Terms―Frequency tuning, mobile communications antennas, PIN diode, RF switches, tunable planar inverted-F antenna (PI