Hepta-B and Internal Antenna for Personal Communication Handsets.

Modern personal communication handsets are shrinking in size and are required to operate at multiple frequency bands for enhanced functionality and performance. This poses an important challenge for antenna designers to build multiband antennas within the limited allowable space. In this paper, an internal antenna covering seven frequency bands is presented for personal communication handsets. The proposed antenna operates at GSM (880-960 MHz), DCS (1710-1880 MHz), PCS (1880-1990 MHz), UMTS (1900-2170 MHz), WiBro (2300-2390 MHz), Bluetooth (2.4-2.48 GHz), and WLAN (5.0-5.5 GHz) frequency bands. Measured input return loss of the antenna is better than -10 dB at all the frequency bands with reasonable radiation performance. Antenna volume is 30 mm x 15 mm x 4.0 mm (1.8 cm3) that makes it attractive for modern multiband and multifunctional slim handsets. [ABSTRACT FROM AUTHOR]