Title :
Microwave behavior of ferrites: theory and experiment
Author :
Geyer, R.G. ; Krupka, J.
Author_Institution :
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Abstract :
The relative magnetic permeability and loss factor of microwave ferrites in the demagnetized state are determined near and above gyromagnetic resonance using low-loss dielectric ring resonators. This technique allows complex permeability determination on a single ferrite sample from 2 GHz to 25 GHz. The measured real parts of the initial permeability are compared with theoretical predictions of the permeability of a sample in the demagnetized state.
Keywords :
demagnetisation; dielectric resonators; ferrite circulators; ferrite phase shifters; ferrites; loss measurement; magnetic leakage; magnetic permeability measurement; microwave circulators; microwave measurement; microwave phase shifters; 2 to 25 GHz; Q factor; accurate measurement; circulators; complex permeability determination; demagnetized state; gyromagnetic resonance; initial permeability; low-loss dielectric ring resonators; microwave behavior; microwave ferrites; phase shifters; relative magnetic loss factor; relative magnetic permeability; single ferrite sample; Demagnetization; Dielectric losses; Dielectric measurements; Ferrites; Gyromagnetism; Magnetic losses; Magnetic resonance; Microwave theory and techniques; Optical ring resonators; Permeability;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1996 Conference on
Conference_Location :
Braunschweig, Germany
Print_ISBN :
0-7803-3376-4
DOI :
10.1109/CPEM.1996.546777
