✦ LIBER ✦

Gain characteristics of a small slot antenna for wristwatch portable radio equipment

✍ Scribed by Yoshinobu Okano; Koichi Ito

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 334 KB
Volume: 82
Category: Article
ISSN: 8756-6621
DOI: 10.1002/(sici)1520-6424(199909)82:9<30::aid-ecja4>3.0.co;2-n

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✦ Synopsis

Recently, the downsizing of portable radio equipment has been progressing, and wristwatch portable radio equipment is now available. The antenna for such equipment is highly affected by the human body, but a slot antenna can positively utilize the body effect.

This paper proposes a small slot antenna installed in the band of a wristwatch-type pager. The radiation characteristics were measured and calculated for cylindrical and flat shapes. The peak gain was 13 dBd for a cylindrical slot antenna (peak gain for a flat slot was 22 dBd). The effect of curvature of the cylindrical antenna element was also studied.

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