Improved miniaturization method for coupled‐line filters
暂无分享，去创建一个
A miniaturization method for coupled-line filters is demonstrated that relies on the equality of the two most important parameters for filter synthesis, the propagation constant and the image impedance, before and after miniaturization.The method enables to maintain the bandwidth intact as opposed to the previous miniaturization method based on the same structure. This proves that bandwidth reduction in miniaturized filters is not due to miniaturization itself but rather due to the mathematical formulation of miniaturization. As compensation of reduced bandwidth is not necessary, the proposed method provides much simpler miniaturization procedure. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2825–2828, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25607
[1] Chun-Hsiang Chi,et al. Miniaturized spurious passband suppression microstrip filter using meandered parallel coupled lines , 2005, IEEE Transactions on Microwave Theory and Techniques.
[2] Kam-Weng Tam,et al. Miniaturized parallel coupled-line bandpass filter with spurious-response suppression , 2005 .
[3] Yongshik Lee,et al. Bandwidth-Compensation Method for Miniaturized Parallel Coupled-Line Filters , 2007, IEEE Transactions on Microwave Theory and Techniques.