Control of Critical Coupling in a Coiled Coaxial Cable Resonator
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.
J. Huang et al., "Control of Critical Coupling in a Coiled Coaxial Cable Resonator," Review of Scientific Instruments, vol. 85, no. 5, American Institute of Physics Inc., May 2015.
The definitive version is available at http://dx.doi.org/10.1063/1.4873325
Electrical and Computer Engineering
Center for High Performance Computing Research
Second Research Center/Lab
Electromagnetic Compatibility (EMC) Laboratory
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)
Article - Journal
© 2014 American Institute of Physics Inc., All rights reserved.