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A small meander antenna by magneto-dielectric material

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2 Author(s)
Y. Mano ; Inst. of Central R&D, Samsung Electro-mechanics Co. Ltd., South Korea ; Seok Bae

Nowadays, new digital multimedia broadcasting services like DVB-H and DABAT-DMB (terrestrial digital multimedia broadcasting) have been realized through VHF/UHF band and provides large opportunities for mobile business. The antenna size for DVB-H and DAB/T-DMB must be too large to be assembled in mobile equipments because a quarter wavelength of VHF band in vacuum (μr=1, εr=1) is about 40 cm. To solve this problem, we have developed new small antennas consist of meander conductive metal pattern and magneto-dielectric (μr>1, εr>1) layers. The ferrite resin composite material and ferrite film have been used for magneto-dielectric layers. The results of electromagnetic field simulation showed that resonant length of an antenna must be 1/√(μrX εr), and the resonance frequency of a magneto-dielectric antenna was about 30-50% of an antenna by dielectric material. And, small volume thin film magneto-dielectric material nearby antenna conductive pattern might be able to shorten wavelength without serious radiation problem.

Published in:

2005 IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications  (Volume:1 )

Date of Conference:

8-12 Aug. 2005