A dual-band internal antenna with a parasitic patch for mobile handsets and the consideration of the handset case and battery

Author

Cho, Young Jun ; Hwang, Soon Ho ; Park, Seong-Ook

Author_Institution

Sch. of Eng., Commun. Univ., Daejeon, South Korea

Volume

4

fYear

2005

fDate

6/27/1905 12:00:00 AM

Firstpage

429

Lastpage

432

Abstract

This letter proposes a compact internal antenna of the modified planar inverted F antenna (PIFA) type with a parasitic patch. It also considers the influences of the handset case and battery. A low-profile design is implemented on both the top and bottom sides of the FR-4 substrate. The proposed antenna, with the small size of 27.5×12×7 mm³, can be easily placed in the actual handset. The measured bandwidths of the proposed antenna with handset case and battery ( VSWR<2 ) can cover 140 MHz (1740-1880 MHz) in the Korean personal communication service (KPCS) band and 90 MHz (2400-2490 MHz) in the Bluetooth band. Numerical simulation and experiment results of antenna electrical performance are investigated by considering the antenna, the phone case, and the battery.

Keywords

mobile antennas; mobile handsets; multifrequency antennas; planar inverted-F antennas; 140 MHz; 1740 to 1880 MHz; 2400 to 2490 MHz; 90 MHz; Bluetooth; Korean personal communication service; dual-band internal antenna; handset battery; handset case; mobile handsets; parasitic patch; planar inverted F antenna; Antenna measurements; Bandwidth; Battery charge measurement; Bluetooth; Dual band; Mobile antennas; Mobile handsets; Numerical simulation; Personal communication networks; Telephone sets; Battery; dual-band antennas; internal antennas; parasitic patch; side coating;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2005.859388

Filename

1545813