Development of cross-coupler filters in rectangular waveguide by using E-plane inserts
120 viewsDOI:
https://doi.org/10.54939/1859-1043.j.mst.FEE.2022.112-120Keywords:
Transfer function of filter; Generalized chebyshev polynomial; Cross-coupler; Coupling matrix; Coupling coefficients; Quality factor; Transmission zeros; E-plane inserts.Transfer function of filter; Generalized chebyshev polynomial; Cross-coupler; Coupling matrix; Coupling coefficients; Quality factor; Transmission zeros; E-plane inserts.Abstract
In order to meet the practical requirements of creating filters on conventional rectangular waveguides with compact size and high quality factor, applied in wireless and radar systems. This paper studies the possibilities of realization of cross-coupler filters with transmission zeros in the rectangular waveguides using metal-dielectronic E-plane inserts. Determining the types of resonators and potential coupling schemes, which can be implemented in rectangular waveguide, taking into account the technological constraints, then built and developed a suitable design procedure for the realization of the cross-coupler filters. The paper also presents the calculation and simulation of an example of cross-coupler filter design using E-plane inserts in rectangular waveguide based on a combination of septa and stripline resonators, verifed the accuracy of theory and design method.
References
[1]. S. Amari, U. Rosenberg, and J. Bornemann, “Singlets, cascaded singlets and the nonresonating node model for advanced modular design of elliptic filters”, IEEE Microw. Wireless Compon. Lett., vol. 14, no. 5 (2004). DOI: https://doi.org/10.1109/LMWC.2004.827866
[2]. http://www.cst.com
[3]. R. J. Cameron, C. M. Kudsia, and R. R. Mansour, “Microwave filters for communication systems: fundamentals, design, and applications”, John Wiley & Sons (2007).
[4]. R. J. Cameron, “General Coupling Matrix Synthesis Methods for Chebychev Filtering Functions”, IEEE Trans. Microwave Theory Tech., vol. 47, pp. 433-442, (1999). DOI: https://doi.org/10.1109/22.754877
[5]. S. Amari and J. Bornemann, “Maximum Number of Finite Transmission Zeros of Coupled Resonator Filters With Source/Load Multi-Resonator Coupling and a Given Topology”, Microwave Conference 2000 Asia Pacific, pp. 1175-1177, (2000).
[6]. J. B. Thomas, “Cross-Coupling in Coaxial Cavity Filters – A Tutorial Overview”, IEEE Trans. Microwave Theory Tech., vol. 51, no. 4, pp. 1368–1376, (2003). DOI: https://doi.org/10.1109/TMTT.2003.809180
