A Low Profile Twin-PIFA Laptop Reconfigurable Multi-band Antenna for Switchable and Fixed Services Wireless Applications

摘要

A reconfigurable twin inverted-F monople antenna has been developed to cover various services including (GSM/DCS/UMTS/IMT-2000/WLAN). These services operate at seven different frequency bands (800MHz, 900MHz, 1.8GHz, 2.1GHz, 2.4 GHz WLAN, and 5.2GHz frequency bands). The developed antenna is compact and has a low profile which makes it optimum for laptop implementation (103mm 脳12mm 脳3mm). It utilizes two-branches, and each branch has more than one-resonance. The twin PIFA antennas are switchable to collectively provide wider range of operating frequencies, i.e. services. The embedded switches, however, are strategically located next to the ground plane to ease their implementation, and reduce parasitics. The implemented design is aimed at simultaneously providing fixed service like Bluetooth at 2.4 GHz, and switchable services (like GSM or PCS for example) at all other frequencies.