Title :
Differentially slotted and differentially filled PIFAs
Author_Institution :
Philips Res. Lab., Redhill, UK
Abstract :
Based on a radiating and balanced mode decomposition it is shown that a planar inverted F antenna (PIFA) with a slot between the feed and shorting pins (differentially slotted PIFA) gives improved impedance control and a slightly wider bandwidth. The bandwidth can be further enhanced using a PIFA that is partially filled with conductor between the feed and shorting pins (differentially filled PIFA) and tuned with a capacitor.
Keywords :
UHF antennas; electric impedance; 400 MHz; 560 MHz; PIFA; balanced mode decomposition; bandwidth; capacitor tuning; differentially filled; differentially slotted; impedance control; planar inverted F antenna; radiating mode decomposition; shorting pins;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20030105
