A frequency-reconfigurable antenna for internal mobile handset applications

作者：Sung Youngje^*

来源：Microwave and Optical Technology Letters, 2014, 56(6): 1366-1371.

DOI：10.1002/mop.28361

• loop antenna
• reconfigurable antenna
• PIFA

In this article, a frequency-reconfigurable planar antenna for mobile handset applications that covers the GSM, DCS, PCS, and UMTS bands is presented and studied. The antenna consists of a single continuous loop element with three connections to a printed circuit board through a feeding point and two shorting points. Additionally, a protruded ground plane is printed on the circuit board near the radiating element. Depending on the switching states of the PIN diode, the reconfigurable antenna operates in a planar inverted-F antenna (PIFA) mode or loop mode. It is found from the measured results that the PIFA mode covers the GSM band, and the loop mode covers the DCS/PCS/UMTS bands. The occupied antenna volume of the proposed design is 27.8 x 10 x 1.6 mm(3), which is quite compact as compared to internal mobile handset antennas that have been reported recently. Good radiation pattern characteristics with reasonable gains have been observed over the operating bandwidths.

• 出版日期2014-6