Control of Critical Coupling in a Coiled Coaxial Cable Resonator

Abstract

This paper reports a coiled coaxial cable resonator fabricated by cutting a slot in a spring-like coiled coaxial cable to produce a periodic perturbation. Electromagnetic coupling between two neighboring slots was observed. By manipulating the number of slots, critical coupling of the coiled coaxial cable resonator can be well controlled. An ultrahigh signal-to-noise ratio (over 50 dB) at the resonant frequency band was experimentally achieved from a coiled coaxial cable resonator with 38 turns. A theoretic model is developed to understand the device physics. The proposed device can be potentially used as a high quality and flexibly designed band-stop filter or a sensor in structural health monitoring.

Department(s)

Electrical and Computer Engineering

Research Center/Lab(s)

Center for High Performance Computing Research

Second Research Center/Lab

Electromagnetic Compatibility (EMC) Laboratory

Sponsor(s)

National Science Foundation (U.S.)

Comments

The research work is supported by the National Science Foundation (NSF) under Grant No. CMMI-1100185.

Keywords and Phrases

Coaxial cables; Frequency bands; Natural frequencies; Resonators; Structural health monitoring; Band-stop filters; Critical coupling; Device physics; High quality; Periodic perturbation; Theoretic model; Cables

International Standard Serial Number (ISSN)

0034-6748

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2014 American Institute of Physics Inc., All rights reserved.

Publication Date

01 May 2014

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