Current limitations of cryogenic microwave oscillator frequency stability

2014 ◽  
Author(s):  
Stephen R. Parker ◽  
Eugene N. Ivanov ◽  
Michael E. Tobar ◽  
John G. Hartnett
Keyword(s):  
Frequency Stability ◽  
Microwave Oscillator ◽  
Oscillator Frequency

scholarly journals Microwave Oscillator Design for a SRR Based Biosensor Platform

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 865
Author(s):  
Martin Brandl ◽  
Lisa-Marie Wagner
Keyword(s):  
High Sensitivity ◽  
Microwave Oscillator ◽  
Microwave Resonator ◽  
Split Ring ◽  
Oscillator Circuit ◽  
Target Proteins ◽  
Oscillator Frequency

A sensor for biomedical markers based on a split ring microwave resonator (SRR) was developed. The surface of the microwave resonator is covered with receptors that specifically bind to the target proteins where the local permittivity is changed. The resonator is part of a microwave oscillator circuit. Changes in the local permittivity caused by coupling of the target proteins result in a change of oscillator frequency which can be easily and accurate measured with high sensitivity.

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