Design of a 900/1800 MHz dual-band loop antenna mounted on a handset considering the human hand and head effects

Liang Cheng Kuo, Huey-Ru Chuang

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


This paper presents FDTD design analysis of a dual-band loop wire antenna for a 900/1800 MHz mobile handset with the consideration of the human hand and head effects. The loop wire antenna with a small gap of a 1 FDTD-cell size (2.5-mm) is mounted on a metallic box covered by a plastic coating. The human head is modeled as a multi-layered superquadric ellipsoid. This model can cover the case of a sphere, ellipsoid, square cube, or rectangular cube, which facilitate the modeling of the head-shape and tissue properties. The superquadric ellipsoidal head model (with the ears) comprises 9 different tissues of skin, cartilage, fat, muscle, bone, blood, nerve, brain, and eye-lens. Considering the proximity between the handset held by hand and the ear of a head, a y-oriented loop wire antenna is positioned at a distance of 1.25cm. FDTD computation and experimental measurement of the antenna VSWR (mounted on a metallic box with a plastic coating) in free space and held by a hand close to a head is performed. The radiation characteristics of the loop antenna affected by the head and the SAR distribution are important for antenna design and RF exposure studies.

Original languageEnglish
Pages (from-to)701-704
Number of pages4
JournalIEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
Publication statusPublished - 2003 Sept 1
Event2003 IEEE International Antennas and Propagation Symposium and USNC/CNC/URSI North American Radio Science Meeting - Columbus, OH, United States
Duration: 2003 Jun 222003 Jun 27

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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