Filters in Generalized Box Configuration With Redundant Resonances and Redundant Couplings

Yi Zeng1; Ming Yu1; Giuseppe Macchiarella2; Di Lu1; Terry Tao Ye1

2022

10.1109/TMTT.2022.3227305

IEEE Transactions on Microwave Theory and Techniques   Impact Factor & Quartile

1557-9670

1557-9670

This article provides a comprehensive discussion of the block named generalized SymBox (GSB). The analytical synthesis approach and a set of design examples are presented. Redundant couplings or redundant resonances are introduced into conventional box topology to avoid negative couplings, forming the GSB block, regardless of the position of transmission zeros (TZs). The working principle of GSB is analyzed in detail from the circuit level for the first time. Furthermore, to generate more TZs within compact structure, frequency-dependent couplings (FDCs) are incorporated with GSB, constituting a new topology. With the proposed direct synthesis method and coupling matrix (CM) rotation sequence, intricate circuit transforms and additional optimization can be avoided in synthesis stage. Also, flexible synthesis solutions can be achieved, bringing more degrees of freedom in filter designs. For the realization with smaller size and higher level of integration, the designs of multilayer sheet metal filters are elucidated. Finally, two five-pole filters are designed and fabricated, followed by the measured results.

Coupling matrix (CM) filter synthesis generalized SymBox (GSB) filter redundant coupling redundant resonance transmission zero (TZ)

SCI

English

First

National Key Research and Development Program of China[2021YFA1003400] ; Shenzhen Key Laboratory of EM Information[ZDSYS20210709113201005]

Engineering

Engineering, Electrical & Electronic

WOS:000903479300001

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

IEEE

1.Shenzhen Key Laboratory of EM Information and the Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, China
2.Dipartimento di Elettronica, Informazione e Bioingneria, Politecnico di Milan, Milan, Italy

Yi Zeng,Ming Yu,Giuseppe Macchiarella,et al. Filters in Generalized Box Configuration With Redundant Resonances and Redundant Couplings[J]. IEEE Transactions on Microwave Theory and Techniques,2022,PP(99):1-13.

Yi Zeng,Ming Yu,Giuseppe Macchiarella,Di Lu,&Terry Tao Ye.(2022).Filters in Generalized Box Configuration With Redundant Resonances and Redundant Couplings.IEEE Transactions on Microwave Theory and Techniques,PP(99),1-13.

Yi Zeng,et al."Filters in Generalized Box Configuration With Redundant Resonances and Redundant Couplings".IEEE Transactions on Microwave Theory and Techniques PP.99(2022):1-13.