Miniaturized and reconfigurable filters for advanced communication systems

New concepts are presented for both miniaturized and MEMS-based reconfigurable waveguide filters. The ultimate goal is to reduce size of telecommunication systems without compromising the high unloaded Q required in such applications. One class of miniaturized filters is based on ridges arbitrarily located and oriented within a waveguide allowing for pseudo-elliptic filter responses; the other one is based on cavities employing TM modes as building blocks to obtain Nth order filters with N transmission zeros. Three new concepts have then been developed for high-Q (>1000) bandpass waveguide filters with tunable central frequency or bandwidth using RF MEMS switches.

[1]  M. Guglielmi,et al.  A new family of all-inductive dual-mode filters , 2001 .

[2]  J. Bornemann,et al.  Singlets, cascaded singlets, and the nonresonating node model for advanced modular design of elliptic filters , 2004, IEEE Microwave and Wireless Components Letters.

[3]  Jens Bornemann,et al.  Inline TM/sub 110/-mode filters with high-design flexibility by utilizing bypass couplings of nonresonating TE/sub 10/01/ modes , 2003 .

[4]  A. E. Williams.  A Four-Cavity Elliptic Waveguide Filter , 1970 .

[5]  M. Guglielmi,et al.  CAD of triple-mode cavities in rectangular waveguide , 1998 .

[6]  Gabriel M. Rebeiz,et al.  High-$Q$ RF-MEMS 4–6-GHz Tunable Evanescent-Mode Cavity Filter , 2010, IEEE Transactions on Microwave Theory and Techniques.

[7]  R. J. Cameron,et al.  Genenal Extracted Pole Synthesis Technique with Applications to Low-Loss TE/sub 011/ Mode Filters , 1980 .

[8]  Roberto Sorrentino,et al.  A New Class of Waveguide Dual-Mode Filters Using TM and Nonresonating Modes , 2010, IEEE Transactions on Microwave Theory and Techniques.

[9]  Simone Bastioli,et al.  Ultra-compact highly-selective dual-mode pseudoelliptic filters , 2010 .

[10]  Roberto Sorrentino,et al.  MEMS-based high-Q reconfigurable E-plane filters , 2011, 2011 41st European Microwave Conference.

[11]  Roberto Sorrentino,et al.  TM dual-mode pseudoelliptic filters using nonresonating modes , 2010, 2010 IEEE MTT-S International Microwave Symposium.

[12]  R. Sorrentino,et al.  A Novel MEMS-Tunable Hairpin Line Filter on Silicon Substrate , 2006, 2006 European Microwave Conference.

[13]  Roberto Sorrentino,et al.  High-Q MEMS-reconfigurable waveguide filters , 2010, The 40th European Microwave Conference.

[14]  J.D. Rhodes,et al.  Genenal Extracted Pole Synthesis Technique with Applications to Low-Loss TE/sub 011/ Mode Filters , 1980, 1980 IEEE MTT-S International Microwave symposium Digest.

[15]  Raafat R. Mansour,et al.  Microwave Filters for Communication Systems: Fundamentals, Design and Applications , 2007 .

[16]  Roberto Sorrentino,et al.  Novel waveguide pseudo-elliptic filters using slant ridge resonators , 2008, 2008 IEEE MTT-S International Microwave Symposium Digest.

[17]  A. Pothier,et al.  High Q tunable cavity using dielectric less RF-MEMS varactors , 2009, 2009 European Microwave Integrated Circuits Conference (EuMIC).

[18]  L. Marcaccioli,et al.  A Novel Class of Compact Dual-Mode Rectangular Waveguide Filters Using Square Ridge Resonators , 2008, 2008 38th European Microwave Conference.

[19]  L. Marcaccioli,et al.  Waveguide Pseudoelliptic Filters Using Slant and Transverse Rectangular Ridge Resonators , 2008, IEEE Transactions on Microwave Theory and Techniques.

[20]  Roberto Sorrentino,et al.  High-Q MEMS-based bandwidth-reconfigurable E-plane filters , 2010, 2010 Asia-Pacific Microwave Conference.