𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Folded-loop antenna with a reflector for mobile handsets at 2.0 GHz

✍ Scribed by Akimasa Hirata; Takahiko Adachi; Toshiyuki Shiozawa

Book ID
102516689
Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
104 KB
Volume
40
Category
Article
ISSN
0895-2477

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A folded‐loop antenna with a reflector for mobile handsets at the 2.0‐GHz band is analyzed, taking the effect of the human head into account. The reflector is arranged between the human head and the driver. The width and height of the reflector are chosen to be slightly smaller and larger than those of the driver, respectively. Based upon numerical investigations, this antenna is found to enhance radiation efficiency by 20% and reduce peak specific absorption rates (SARs) averaged over 1 g and 10 g of tissues by 70%–85%. Β© 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 272–275, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11350

πŸ“œ SIMILAR VOLUMES

Folded-loop antennas for handset termina
Folded-loop antennas for handset terminals at the 2.0-GHz band
✍ Takahiko Adachi; Akimasa Hirata; Toshiyuki Shiozawa πŸ“‚ Article πŸ“… 2003 πŸ› John Wiley and Sons 🌐 English βš– 85 KB

## Abstract Folded‐loop antennas for mobile handsets are analyzed, taking into account the influence of the human body. Folding the loop antennas toward the back of a metallic box is found to reduce the peak SAR averaged over 1 g and 10 g of tissues by 30% to 60%, while the radiation characteristic

Internal folded loop antenna with tuning
Internal folded loop antenna with tuning notches for GSM/GPS/DCS/PCS mobile handset applications
✍ Byungwoon Jung; Hanphil Rhyu; Young-Joong Lee; Frances J. Harackiewicz; Myun-Joo πŸ“‚ Article πŸ“… 2006 πŸ› John Wiley and Sons 🌐 English βš– 392 KB πŸ‘ 1 views

GHz and almost no changes in the rest of properties such as noise figure, current consumption, input return loss, and output return loss when compared with the 2-m GaInP/GaAs HBT LNA without interstage matching. The bandwidth of a cascode amplifier is usually limited by the output matching bandwidth