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Article overview
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A time domain based method for the accurate measurement of Q-factor and resonance frequency of microwave resonators | B. Gyüre
; B. G. Márkus
; B. Bernáth
; F. Murányi
; F. Simon
; | Date: |
26 May 2015 | Abstract: | We present a novel method to determine the resonant frequency and quality
factor of microwave resonators which is faster, more stable, and conceptually
simpler than the yet existing techniques. The microwave resonator is irradiated
at a frequency away from its resonance. It then emits an exponentially decaying
radiation at its eigen-frequency when the excitation is rapidly switched off.
The emission is down-converted with a microwave mixer, digitized and its
Fourier transformation (FT) directly yields the resonance curve in a single
shot. Being an FT based method, this technique possesses the Fellgett
(multiplex) and Connes (accuracy) advantages and it conceptually mimics that of
pulsed nuclear magnetic resonance. We also establish a novel benchmark to
compare accuracy of the different approaches of microwave resonator
measurements. This shows that the present method have similar accuracy to the
existing ones. | Source: | arXiv, 1505.6863 | Services: | Forum | Review | PDF | Favorites |
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