Miniaturized microstrip meander‐line antenna with very high‐permittivity substrate for sensor applications
2007
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 (er = 90) and meander-line structure simultaneously, the side length of the designed antenna is about λg/12 (λg 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
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