Physics of Limiting Phenomena in Superconducting Microwave Resonators: Vortex Dissipation, Ultimate Quench and Quality Factor Degradation Mechanisms

The article shows the potential for use of integral spiral microwave resonators in the LTCC structure and filters based on them. It provides calculated ratios, developed 3D model of the spiral filter and obtained calculated S-parameters of the filter model.

Download Full-text

Sapphire loaded microwave resonators with enhanced quality factor

Proceedings of IEEE 48th Annual Symposium on Frequency Control ◽

10.1109/freq.1994.398290 ◽

2002 ◽

Cited By ~ 4

Author(s):

E.N. Ivanov ◽

V.I. Kalinichev ◽

D.G. Blair

Keyword(s):

Quality Factor ◽

Microwave Resonators

Download Full-text

Implementation of high quality-factor on-chip tuned microwave resonators at 7 GHz

Microwave and Optical Technology Letters ◽

10.1002/mop.24103 ◽

2008 ◽

Vol 51 (2) ◽

pp. 497-501 ◽

Cited By ~ 4

Author(s):

Rohat Melik ◽

Hilmi Volkan Demir

Keyword(s):

Quality Factor ◽

High Quality Factor ◽

High Quality ◽

Microwave Resonators ◽

On Chip

Download Full-text

Non-Invasive Heart Beat Measurement Using Microwave Resonators

Proceedings ◽

10.3390/proceedings2131002 ◽

2018 ◽

Vol 2 (13) ◽

pp. 1002

Author(s):

Felix Essingholt ◽

Frederic Meyer ◽

Peter Kuhn ◽

Philip Schmidt ◽

Thorsten Benkner ◽

...

Keyword(s):

Blood Pressure ◽

Heart Rate ◽

Resonance Frequency ◽

Quality Factor ◽

Human Body ◽

Heart Beat ◽

Proof Of Concept ◽

Microwave Resonators ◽

Non Invasive ◽

First Results

In this paper we present the first results of our research regarding microwave biosensors for non-invasive permittivity monitoring of the human body. To detect permittivity changes, resonators are used, which alter their resonance frequency and their quality factor depending on the permittivity of the material they are placed upon. These permittivity changes may be used as indicators for the heart rate, blood pressure or glucose level. As a proof of concept, this paper focusses on designing resonators to detect the heart beat of humans in the Radial Artery, which is located in the forearm.

Download Full-text