A THz Waveguide Bandpass Filter Design Using an Artificial Neural Network

This paper presents a 300 GHz waveguide bandpass filter based on asymmetric inductive irises. The coupling matrix synthesis technique is used to design a 6-pole Chebyshev filter. In addition, an artificial neural network is applied to provide the filter geometries using the desired frequency response. The optimized filter is fabricated by the computer numeric controlled milling process. The measurement results show that the insertion loss is less than 3 dB and the return loss is better than 17 dB in the range 276–310 GHz.

[1]  Kwang Gi Kim,et al.  Miniaturized Bandpass Filter Using a Combination of T–Shaped Folded SIR Short Loaded Stubs , 2022, Sensors.

[2]  T. Kürner,et al.  IEEE 802.15.3d: First Standardization Efforts for Sub-Terahertz Band Communications toward 6G , 2020, IEEE Communications Magazine.

[3]  Bing-Zhong Wang,et al.  Inverse Design of Metasurface Using Combined Neural Network and Transfer Function , 2020, 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting.

[4]  Yunqing Hu,et al.  A Compact 3.3–3.5 GHz Filter Based on Modified Composite Right-/Left-Handed Resonator Units , 2019 .

[5]  Weicong Na,et al.  Multivalued Neural Network Inverse Modeling and Applications to Microwave Filters , 2018, IEEE Transactions on Microwave Theory and Techniques.

[6]  Sheng-Cai Shi,et al.  WR-3 Band Quasi-Elliptical Waveguide Filters Using Higher Order Mode Resonances , 2017, IEEE Transactions on Terahertz Science and Technology.

[7]  Augustine O. Nwajana,et al.  Substrate Integrated Waveguide (SIW) Bandpass Filter with Novel Microstrip-CPW-SIW Input Coupling , 2017 .

[8]  Babu Lal Shahu,et al.  A Compact UWB Bandpass Filter using Hybrid Fractal Shaped DGS , 2017 .

[9]  Wei Hong,et al.  Design and analysis of a terahertz bandpass filter , 2015, 2015 IEEE International Wireless Symposium (IWS 2015).

[10]  Xiaoming Huang,et al.  A flexible wideband bandpass terahertz filter using multi-layer metamaterials , 2013 .

[11]  Michael J. Lancaster,et al.  SU-8 micromachined WR-3 band waveguide bandpass filter with low insertion loss , 2013 .

[12]  Yi Wang,et al.  WR-3 Band Waveguides and Filters Fabricated Using SU8 Photoresist Micromachining Technology , 2012, IEEE Transactions on Terahertz Science and Technology.

[13]  Deng Xianjin,et al.  140GHz waveguide H ladder bandpass filter , 2012, International Conference on Microwave and Millimeter Wave Technology.

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

[15]  Qi-Jun Zhang,et al.  Artificial neural networks for RF and microwave design - from theory to practice , 2003 .

[16]  Qi-Jun Zhang,et al.  Neural Networks for RF and Microwave Design (Book + Neuromodeler Disk) , 2000 .

[17]  Qi-Jun Zhang,et al.  Neural Networks for RF and Microwave Design , 2000 .

[18]  A. Semlyen,et al.  Rational approximation of frequency domain responses by vector fitting , 1999 .

[19]  Giuseppe Pelosi,et al.  Direct-coupled cavity filters design using a hybrid feedforward neural network–finite elements procedure , 1999 .

[20]  M. F. Møller.  A Scaled Conjugate Gradient Algorithm for Fast Supervised Learning , 1990 .

[21]  Bo Liu,et al.  WR-3 Waveguide Bandpass Filters Fabricated Using High Precision CNC Machining and SU-8 Photoresist Technology , 2018, IEEE Transactions on Terahertz Science and Technology.

[22]  Chao Zhang,et al.  Parametric Modeling of EM Behavior of Microwave Components Using Combined Neural Networks and Pole-Residue-Based Transfer Functions , 2016, IEEE Transactions on Microwave Theory and Techniques.

[23]  D. Depriest,et al.  Understanding Industrial Designed Experiments , 1993 .