Summary
International Symposium on Antennas and Propagation
2006
Session Number:2POS
Session:
Number:2POS-2
Multi-Band Antenna for Practical Handset Applications
C. W. Jang, Y. J. Sung, J. W. Baik, Y.-S.Kim,
pp.1-4
Publication Date:2006/11/2
Online ISSN:2188-5079
Summary:
The two dual-band internal antennas which are located at the top portion of the printed circuit board (PCB) and 5 mm distance from each antenna element for practical handset applications are presented in this paper. A planar inverted-F antenna (PIFA) is designed as the main antenna of the handset to cover the US Cellular band (824 MHz~894 MHz) and the US PCS band (1850 MHz~1990 MHz). A rectangular spiral inverted-F antenna (IFA) is designed to cover the MediaFLO band (716 MHz~722 MHz) and the 1575.42 MHz non-simultaneous global positioning system (GPS) antenna. The location of two dual-band antennas is designed near the top portion of the PCB in order to minimize hand blockage. The L-shaped vertical ground plane between two antennas is proposed to improve the isolation performance and threedimensional (3D) free-space radiation efficiency. It is acceptable in spite of the insufficient isolation performance as low as 10 dB at the non-simultaneous GPS and MediaFLO bands if radiation efficiencies are satisfied with the requirement. Numerical simulation and experiment results of return loss, isolation, radiation pattern and 3D free-space antenna gain are presented to demonstrate the effect of the Lshaped vertical ground plane.