On artificial magnetodielectric loading for improving the impedance bandwidth properties of microstrip antennas

被引：96
作者：
Ikonen, Pekka M. T. [1 ]
Maslovski, Stanislav I.
Simovski, Constantin R.
Tretyakov, Sergei A.
机构：
[1] Aalto Univ, Radio Lab, SMARAD, FI-02015 Helsinki, Finland
[2] St Petersburg State Polytech Univ, St Petersburg 195251, Russia
[3] St Petersburg Univ Informat & Technol Mech & Opt, St Petersburg 197101, Russia
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2006年 / 54卷 / 06期
关键词：
artificial magnetic materials; frequency dispersion; miniaturization; magnetodielectric substrate; patch antenna; quality factor;
D O I：
10.1109/TAP.2006.875912
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The effect of artificial magnetodielectric substrates on the impedance bandwidth properties of microstrip antennas is discussed. We review the results found in the literature and then focus on practically realizable artificial magnetic media operating in the microwave regime. Next, a realistic dispersive behavior of a practically realizable artificial substrate is embedded into the model. It is shown that frequency dispersion of the substrate plays a very important role in the impedance bandwidth characteristics of the loaded antenna. The impedance bandwidths of reduced size patch antennas loaded with dispersive magnetodielectric substrates and high-permittivity substrates are compared. It is shown that unlike substrates with dispersion-free permeability, practically realizable artificial substrates with dispersive magnetic permeability are not advantageous in antenna miniaturization. This conclusion is experimentally validated.
引用
收藏
页码：1654 / 1662
页数：9
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