Small-size broad-band printed antenna with parasitic element

摘要

A small, inexpensive, built-in planar inverted F-type antenna (PIFA) with a parallel meandering parasitic element having a wide bandwidth to facilitate wireless, short range communications between devices operating in the Bluetooth frequency range is disclosed. The parasitic element is placed on the same substrate as the main antenna element and is grounded at one end. The feeding pin of the PIFA is proximal to the ground pin of the parasitic element. The coupling of the meandering, parasitic element to the main antenna results in two resonances. These two resonances are adjusted to be adjacent to each other in order to realize a broader resonance.