Publisher : The Korean Institute of Electrical Engineers
DOI : 10.5370/JEET.2014.9.1.273
Title & Authors
Effects of Magneto-Dielectric Ceramics for Small Antenna Application Kim, Jae-Sik; Lee, Young-Hie; Lee, Byungje; Lee, Jong-Chul; Choi, Jin Joo; Kim, Jin Young;
Hexagonal Ba-ferrites are widely suggested as materials for small antennas. In this paper, the sintering behavior and magneto-electric properties of () ceramics were investigated for small antenna application. All samples of ceramics were prepared by the solid-state reaction method and sintered at . From the XRD patterns of the sintered ceramics, the Z-type phases were found to be the main phases. The real part of permittivity and permeability of the ceramics decreased with frequency. On the other hand, loss tangents of permittivity and permeability tended to behave opposite to real part of permittivity and permeability. The real part of permeability was affected by Mn additions. The real part of permittivity, the loss tangent of permittivity and the real part of permeability, the loss tangent of permeability of ceramics were 19.774, 0.176 and 15.183, 0.073, respectively, at 510 MHz. In order to investigate the effect of magneto-dielectric ceramics on antenna, PIFA (Planar Inverted F Antenna) was simulated with CST (Computer Simulation Technology). The operating frequency of antenna was decreased without considerable change of bandwidth by using the ceramics as the carrier.
Magnetodielectric effect in relaxor/ferrimagnetic composites, Journal of Alloys and Compounds, 2015, 640, 462
Permeability and permittivity spectra of substituted barium Ferrites BaFe12−x(Ti0.5Co0.5)xO19(x=0 to 5), Journal of Magnetism and Magnetic Materials, 2016, 399, 64
Byeongkwan Kim, Hanphil Rhyu, In-Young Lee, Joonho Byun, and Byungje Lee, "Compact internal antenna using a ferrite material for DVB-H reception in mobile phones", 2008 IEEE Antennas and Propagation Society International Symposium, 2008.
R. C. Hansen and Mary Burke, "Antennas with magneto-dielectrics", Microwave and optical technology letter, Vol. 26, issue 2, pp. 75-78, 2000.
Hossein Mosallaei, and Kamal Sarabandi, "Magneto-Dielectrics in Electomagnetics: Concept and Applications", IEEE Transactions on Antennas and Propagation, Vol. 52, No. 6, pp.1558-1567, 2004.
H. Kojima, "Fundamental Properties of Hexagonal Ferrites with Magnetoplumbite Structure", Ferromagnetic Materials, Vol. 3, Ed. By E.P. Wohlfarth, North-Holland Pub., Amsterdam, pp.189-304, 1982.
J. Jeong, K.W. Cho, D.W. Hahn, B.C. Moon, Y.H. Han, "Synthesis of $Co_2Z$ Ba-ferrites", Materials letters, Vol. 59, issue 29-30, pp. 3959-3962, 2005.
L. F. Chen, C. K. Ong, C. P. Neo, V. V. Varadan and V. K. Varadan, "Microwave Electronics: Measurement and Materials Characterization", John Wiley & Sons, Ltd., pp.175-207, 2004.
A. M. Nicolson and G. F. Ross, "Measurement of the intrinsic properties of materials by time domain techniques", IEEE Trans. on Instrumentation and Measurement, Vol. 19, No. 4, pp. 377-382, 1970.
W. B. Weir, "Automatic measurement of complex dielectric constant and permeability at microwave frequencies", Proceedings of the IEEE, Vol. 62, No. 1, pp.33-36, 1974.
JCPDS Card #78-0135
JCPDS Card #44-0206
JCPDS Card #19-0097
M. A. Vinnik and Zn. Neorg. Khim, Russ. J. Inorg. Chem. (Engl. Transl.), Vol. 10(9) (1965) 1164-1167.
Yong Woon Yun, Sang Woo Kim, Gwang Yoon Kim, Yoon Bae Kim, Yeo Chun Yun and Kyung Sup Lee, "Electromagnetic shielding properties of soft magnetic metal and ferrite composites for application to suppress noise in a radio frequency range", J. Electoceram., Vol. 17, pp. 467-469, 2006.
Shahid Hussain, M. Anis-ur-Rehman, A. Maqsood and M.S. Awan, "The effect of $SiO_2$ addition on structural, magnetic and electrical properties of strontium hexa-ferrites", Journal of Crystal Growth, Vol. 297, pp. 403-410, 2006.
Jae-Sik Kim, Eui-Sun Choi, Ki-Won Ryu and Young-Hie Lee, "Strucrual and RF Properties of $Co_2Z$ Ferrite for Antenna Substate", Modern Physics Letters B, Vol. 23, No. 31&32, pp. 3731-3737, 2009.
James P. Schaffer, Ashok Saxena, Stephen D. Antolovich, Thomas H. Sanders, Jr. and Steven B. Warner, "The Science and Design of Engineering Materials", Korea Edition, RICHARD D. IRWIN, INC., pp.143, 1997.
T. Nakamura and E. Hankui, "Control of high frequency permeability in polycrystalline (Ba, Co)-Z-type hexagonal ferrite", Journal of Magn. Mater., Vol. 257, pp. 158-164, 2003.
M. Aldrigo, A. Costanzo, D. Masotti, C. Galassi, "Exploitation of a novel magneto-dielectric substrate for miniaturization of wearable UHF antennas", Materials Letters 87, pp. 127-130, 2012.
Constantine A. Balanis, "Antenna theory - third edition", Wiley-Interscience, pp. 64-65, 2005.