Design of Bandpass Filter Based on Hybrid Planar Waveguide Resonator

This paper presents a new concept of bandpass resonator based upon the association of planar and substrate integrated waveguide technologies. The selectivity, control of rejection, and ease of design are significantly enhanced by the hybrid planar waveguide resonator compared to the classical substrate integrated waveguide resonators. The hybrid planar waveguide resonator is built from the association of two elements: a substrate integrated circular cavity and a transmission line. When these two elements are connected together, they permit the occurrence of the pole and the transmission zero of the hybrid planar waveguide resonator. This paper describes and discusses the design procedure for n th-order filters. This procedure relies on an iterative process between synthesis equations and a graph. Electrical performances and particularly Q factor are brought to the fore through the realization of a single resonator. The design procedure is then validated through the realization and measurement of a C-band second-order filter. Finally, a third-order filter in the Ku -band is designed, realized, and measured.

[1]  Wei Hong,et al.  Finite-difference frequency-domain algorithm for modeling guided-wave properties of substrate integrated waveguide , 2003 .

[2]  Wei Hong,et al.  Planar asymmetric dual-mode filters based on substrate integrated waveguide (SIW) , 2005, IEEE MTT-S International Microwave Symposium Digest, 2005..

[3]  Eric Rius,et al.  Narrow bandpass filters using dual-behavior resonators , 2003 .

[4]  U. Rosenberg,et al.  Novel coupling schemes for microwave resonator filters , 2002, 2002 IEEE MTT-S International Microwave Symposium Digest (Cat. No.02CH37278).

[5]  Ian Hunter,et al.  Theory and Design of Microwave Filters , 2001 .

[6]  J. Papapolymerou,et al.  Highly integrated millimeter-wave passive components using 3-D LTCC system-on-package (SOP) technology , 2005, 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]  Wei Hong,et al.  Development of Millimeter-Wave Planar Diplexers Based on Complementary Characters of Dual-Mode Substrate Integrated Waveguide Filters With Circular and Elliptic Cavities , 2007, IEEE Transactions on Microwave Theory and Techniques.

[9]  G. Amendola,et al.  Analysis of Substrate Integrated Waveguide Structures Based on the Parallel-Plate Waveguide Green's Function , 2008, IEEE Transactions on Microwave Theory and Techniques.

[10]  C. Quendo,et al.  Design of Ku-Band Filter based on Substrate-Integrated Circular Cavities (SICCs) , 2006, 2006 IEEE MTT-S International Microwave Symposium Digest.

[11]  Jr. R. Wyndrum.  Microwave filters, impedance-matching networks, and coupling structures , 1965 .

[12]  Ke Wu,et al.  Single-substrate integration technique of planar circuits and waveguide filters , 2003 .

[13]  L. Boccia,et al.  Resonant Frequencies of Circular Substrate Integrated Resonators , 2008, IEEE Microwave and Wireless Components Letters.

[14]  R. Cameron.  General coupling matrix synthesis methods for Chebyshev filtering functions , 1999 .

[15]  Ke Wu,et al.  Novel substrate integrated waveguide cavity filter with defected ground structure , 2005, IEEE Transactions on Microwave Theory and Techniques.

[16]  Benjamin Potelon,et al.  On the design flexibility of substrate-integrated circular cavities (SICCs) , 2006 .

[17]  Jiasheng Hong,et al.  Couplings of microstrip square open-loop resonators for cross-coupled planar microwave filters , 1996 .

[18]  Ke Wu,et al.  Compact super-wide bandpass substrate integrated waveguide (SIW) filters , 2005, IEEE Transactions on Microwave Theory and Techniques.

[19]  K. Wu,et al.  Integrated microstrip and rectangular waveguide in planar form , 2001, IEEE Microwave and Wireless Components Letters.

[20]  C. Quendo,et al.  Narrow bandpass filters using dual-behavior resonators based on stepped-impedance stubs and different-length stubs , 2004, IEEE Transactions on Microwave Theory and Techniques.

[21]  C. Quendo,et al.  Integration of optimized low-pass filters in band-pass filters for out-of-band improvement , 2001, 2001 IEEE MTT-S International Microwave Sympsoium Digest (Cat. No.01CH37157).

[22]  Ke Wu,et al.  Guided-wave and leakage characteristics of substrate integrated waveguide , 2005, IEEE Transactions on Microwave Theory and Techniques.

[23]  U. Rosenberg,et al.  Characteristics of cross (bypass) coupling through higher/lower order modes and their applications in elliptic filter design , 2005, IEEE Transactions on Microwave Theory and Techniques.

[24]  Wei Hong,et al.  Optimal design of compact millimetre-wave SIW circular cavity filters , 2005 .

[25]  G. Macchiarella,et al.  Synthesis of inline filters with arbitrarily placed attenuation poles by using nonresonating nodes , 2005, IEEE Transactions on Microwave Theory and Techniques.