Miniaturized microstrip meander-line antenna with very high-permittivity substrate for sensor applications
✍ Scribed by Haiwen Liu; Shohei Ishikawa; An An; Satoshi Kurachi; Toshihiko Yoshimasu
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 218 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
This article presents a compact microstrip meander‐line antenna for sensor network applications in the 290 MHz band. The antenna is fed by coplanar waveguide and its dimension is 15 mm × 15 mm × 2 mm. Because of the use of a very high relative permittivity substrate (ε~r~ = 90) and meander‐line structure simultaneously, the side length of the designed antenna is about λ~g~/12 (λ~g~ is the guided wavelength) so that the circuit size is reduced greatly. Measurements verify that the proposed antenna has bandwidth of 12% at the resonant frequency of 293 MHz. Also, the radiation patterns measured at resonance frequencies are very close to omnidirectional in the E‐plane. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2438–2440, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22798