Flexible PIFA antenna with tunable coupling element

摘要

A modified PIFA antenna is designed for wireless local area network (WLAN) applications. The modified PIFA antenna is configured to resist detuning effects caused by use of various cable lengths and is adapted for use in the 2.4 GHz operation band. A slot extends between the ground and feed portions of the antenna for slightly increasing frequency bandwidth of the antenna.

主权项

1. A modified PIFA antenna, comprising:
a planar base; a radiating portion extending from the planar base, the radiating portion comprising:
a primary conductor element extending from a first end at the base to a second end,a bifurcated conductor element having a first portion extending perpendicularly from the primary conductor at a point about half way between the first and second ends thereof, and a second portion extending perpendicularly from the first portion, the second portion being aligned parallel with the primary conductor element, the first and second portions of the bifurcated conductor element forming a loop with the primary conductor element; anda terminal conductor element extending from the primary conductor element at a second end; and a coupling element extending from the base and being aligned parallel with the second portion of the bifurcated element; wherein the coupling element is adapted to produce a capacitive reactance for resisting detuning effects caused by connecting the antenna to a cable.