论文信息 - A miniaturized end-coupled tunable bandpass filter with reduced varactors

A miniaturized end-coupled tunable bandpass filter with reduced varactors

This study presents a four-pole end-coupled tunable bandpass filter with a proposed size-reduction method. This proposed method can make the resonators shorter and lessen the number of used varactor diode. As a result, the experiment shows that the proposed method has application to reduce the number of varactor diode. In this paper, end-coupled tunable bandpass filters were designed and tested using an existing size-reduction method and the proposed method.

[1] Gabriel M. Rebeiz,et al. A varactor-tuned RF filter , 2000 .

[2] Sang-Won Yun,et al. Hairpin Tunable Bandpass Filter with Improved Selectivity and Tunability , 2007, 2007 Asia-Pacific Microwave Conference.

[3] Gabriel M. Rebeiz,et al. A 12-18-GHz three-pole RF MEMS tunable filter , 2005, IEEE Transactions on Microwave Theory and Techniques.

[4] Masahiro Muraguchi,et al. Reduced-size branch-line and rat-race hybrids for uniplanar MMIC's , 1990 .

[5] E. M. Jones,et al. Microwave Filters, Impedance-Matching Networks, and Coupling Structures , 1980 .

[6] Jia-Sheng Hong,et al. Microstrip filters for RF/microwave applications , 2001 .

[7] Gabriel M. Rebeiz,et al. Low-Loss Two-Pole Tunable Filters With Three Different Predefined Bandwidth Characteristics , 2008, IEEE Transactions on Microwave Theory and Techniques.