A monolithic vertical integration concept for compact coaxial-resonator-based bandpass filters using additive manufacturing
No Thumbnail Available
Files
Accepted Version
Date
2021-03-01
Authors
Zhao, Kunchen
Psychogiou, Dimitra
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Published Version
Abstract
This paper reports on a compact, low-cost and low-loss monolithic integration concept for additively-manufactured coaxial-resonator-based bandpass filters (BPFs). Size compactness and low weight are achieved by vertically-stacking capacitively-loaded coaxial resonators and by monolithic integration that eliminates the need for assembly screws or fixtures. Furthermore, the proposed vertical integration concept allows for: i) flexible cross couplings to be realized enabling highly-selective transfer functions through transmission zero (TZ) generation and ii) for fairly complex geometries to be manufactured using low-cost stereolithography apparatus (SLA). For proof-of-concept demonstration purposes, a two-pole BPF with fractional bandwidth (FBW) of 8.5% and a three-pole/one-TZ BPF with FBW 6.2% at 3.8 GHz were designed, SLA-manufactured and measured. They exhibited low-levels of insertion loss (< 0.1 dB), high effective quality factors > 1,833 and wide spurious-free operation.
Description
Keywords
Additive manufacturing , Band-pass filters , Bandpass filters , Coaxial cavity filters , Coaxial cavity resonators , Couplings , High-Q filters , Microwave filters , Radio frequency , Resonator filters , Resonators , Three-dimensional displays
Citation
Zhao, K. and Psychogiou, D. (2021) 'A monolithic vertical integration concept for compact coaxial-resonator-based bandpass filters using additive manufacturing', IEEE Microwave and Wireless Components Letters. doi: 10.1109/LMWC.2021.3062825
Copyright
© 2021, IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.