The design and test of dual/triple-mode bandpass filter based on temporal coupled-mode theory

In this article, the design and test of both a K-band dual-mode bandpass filter BPF pair and a K-band triple-mode BPF are presented based on N-mode temporal coupled-mode theory CMT. The expressions of transmission and reflection responses are analytically derived. All the parameters in the expressions have clear physical meanings and are easily optimized to reach the required filter performance. Aided by eigenmode simulations, concrete structures of the three integrated BPFs are designed and optimized to approach the calculated physical parameters. After the fabrications and measurements of the three BPFs, extended upper/lower stopband with high stopband rejections are achieved, and by increasing the number of resonant modes, improved frequency selectivity and better passband flatness are obtained. The analytical analysis well predicts the simulation and measurement results, which provides an efficient way for BPF designs. © 2016 Wiley Periodicals, Inc. Int J RF and Microwave CAE 26:609-622, 2016.

[1]  Jianguo Ma,et al.  Wideband bandpass filter with excellent selectivity using new CSRR-based resonator , 2010 .

[2]  Pei-Ling Chi,et al.  Microstrip Realization of Generalized Chebyshev Filters With Box-Like Coupling Schemes , 2007, IEEE Transactions on Microwave Theory and Techniques.

[3]  Wei Hong,et al.  Design and implementation of an SIW triple-mode filter , 2014, Proceedings of 2014 3rd Asia-Pacific Conference on Antennas and Propagation.

[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]  Yongheng Shang,et al.  Temporal Coupled-Mode Theory and the Combined Effect of Dual Orthogonal Resonant Modes in Microstrip Bandpass Filters , 2015, IEEE Transactions on Microwave Theory and Techniques.

[6]  L. Athukorala,et al.  Compact Dual-Mode Open Loop Microstrip Resonators and Filters , 2009, IEEE Microwave and Wireless Components Letters.

[7]  Xiao-Chuan Zhang,et al.  Design of Microstrip Dual-Mode Filters Based on Source-Load Coupling , 2008, IEEE Microwave and Wireless Components Letters.

[8]  Q. Chu,et al.  A Compact Bandpass Filter with Source-Load Coupling by Using Short-Circuited Coupled Lines Between Ports , 2010 .

[9]  W. Menzel,et al.  Compact microstrip bandpass filter with two transmission zeros using a stub-tapped half-wavelength line resonator , 2003, IEEE Microwave and Wireless Components Letters.

[10]  Boran Guan,et al.  Design of high selectivity tri‐band bandpass filter with wide upper stopband , 2013 .

[11]  Chen Miao,et al.  Compact and Sharp Skirts Microstrip Dual-Mode Dual-Band Bandpass Filter Using a Single Quadruple-Mode Resonator (QMR) , 2013, IEEE Transactions on Microwave Theory and Techniques.

[12]  Rui Li,et al.  Compact triple-mode microstrip bandpass filter , 2012, 2012 IEEE 14th Electronics Packaging Technology Conference (EPTC).

[13]  J. Y. Jin,et al.  A novel E‐plane substrate inserted bandpass filter with high selectivity and compact size , 2014 .

[15]  L. Wang,et al.  A novel high selectivity dual-band band-pass filter with inductive source–load coupling , 2012 .

[16]  Wen-Yan Yin,et al.  A Novel Microstrip Filter Using Three-Mode Stepped Impedance Resonator (TSIR) , 2009, IEEE Microwave and Wireless Components Letters.

[17]  Mark A. Bowen,et al.  Ultra sharp roll-off bandpass filter design for near pass-band RFI mitigation , 2013, 2013 Asia-Pacific Microwave Conference Proceedings (APMC).

[18]  Mohsen Hayati,et al.  Compact microstrip lowpass filter with sharp roll-off using radial resonator , 2014 .

[19]  Sang-Won Yun,et al.  New compact bandpass filter using microstrip /spl lambda//4 resonators with open stub inverter , 2000 .

[20]  Chang-Hong Liang,et al.  Compact wideband microstrip bandpass filter with wide upper stopband based on coupled‐stub loaded resonator , 2015 .

[21]  M. Aribandi.  Limited MRI of the brain as an alternative to CT , 2006, The Lancet.

[23]  S. Amari,et al.  Adaptive synthesis and design of resonator filters with source/load-multiresonator coupling , 2002 .

[24]  Shanhui Fan,et al.  Temporal coupled-mode theory and the presence of non-orthogonal modes in lossless multimode cavities , 2004 .

[25]  A new varactor-tuned microstrip ring bandpass filter with harmonic suppression , 2000, 2000 Asia-Pacific Microwave Conference. Proceedings (Cat. No.00TH8522).

[26]  Osama M. Haraz,et al.  Design of a compact dual‐band folded‐waveguide bandpass filter using multilayer waveguide resonators , 2015 .

[27]  Lei Zhu,et al.  Compact and High-Selectivity Microstrip Bandpass Filters Using Triple-/Quad-Mode Stub-Loaded Resonators , 2011, IEEE Microwave and Wireless Components Letters.