Work

Synthesis, design, and fabrication of filters with dual/multiple dangling nodes

Year: 2025

Type: article

Abstract: A synthesis and design approach is proposed for filters with multiple transmission zeros generated using dual/multiple dangling nodes. It begins with the synthesis of the general characteristic polynomials. An analytical method is proposed to derive the coupling matrix from the polynomials. Two third-order-two-zero bandpass filters (BPFs) are first used to demonstrate the synthesis and design procedure. Two third-order-four-zero BPFs are then designed and prototyped using two pairs of mixed E/H-plane dual dangling nodes. The fabrication of the mixed E/H-plane complex filter structures are enabled by 3D printing technology. A monolithic filter is produced and tested. Excellent agreement between the measurement and the design substantially verifies the synthesis and design approach and demonstrates the capability of the additive manufacture technology.

Source: AEU - International Journal of Electronics and Communications

DOI: 10.1016/j.aeue.2025.155785

Authors: A. Mostaani, Y. Wang, L. Qian, A.A. Mohamed, M.M. Attallah

Institution: University of Birmingham

Language: English

Topic: Microwave Engineering and Waveguides

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,090

Funder: Engineering and Physical Sciences Research Council