Printed λ/8-PIFA for Internal Penta-Band Mobile Phone Antenna
Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany
Proceedings: EuCAP 2009
Pages: 5Language: englishTyp: PDFPersonal VDE Members are entitled to a 10% discount on this title
Wong, Kin-Lu; Chang, Chih-Hua (Department of Electrical Engineering, National Sun Yat-sen University, Kaohsiung 804, Taiwan)
A small-size printed PIFA operated at its λ/8 mode as the fundamental mode for achieving WWAN (wireless wide area network) operation in the mobile phone is presented. The proposed PIFA has a simple structure of comprising two radiating strips of length about λ/8 at 900 MHz and is fed using a coupling feed. Two λ/8 modes are generated by the two radiating strips and occur at close frequencies at about 900 MHz to form a wide lower band to cover GSM850/900 operation. The two radiating strips also generate two λ/4 modes at about 1900 MHz to form a wide upper band for GSM1800/1900/UMTS operation. Penta-band WWAN operation is hence achieved, yet the proposed PIFA only occupies a small printed area of 15 × 31 mm2 or 465 mm2 on the system circuit board of the mobile phone. Details of the proposed PIFA are presented. The SAR (specific absorption rate) and HAC (hearing aid compatibility) results for the proposed PIFA are also analyzed.