DocumentCode :
1041008
Title :
On dielectric losses at microwaves: Sensitive measurements and results
Author :
Bethe, Klaus ; Verweel, Jan
Author_Institution :
Philips Zentrallaboratorium, Hamburg, Germany.
Volume :
5
Issue :
3
fYear :
1969
fDate :
9/1/1969 12:00:00 AM
Firstpage :
474
Lastpage :
477
Abstract :
Two methods of measuring the permittivity and the dielectric losses at microwaves are described. With the first method, which uses a circular E010 resonator, a sensitivity 
could be obtained. The accuracy is rather low (≈ 5 percent). The second method uses a high-quality 
resonator which resonates at the same frequency in the 
mode if a sample of the proper dimensions is introduced. This method has a sensitivity 
and an accuracy < 1 percent. With both methods, measurements can be carried out in a large temperature range. Data on several ferrites and dielectrics show a large increase of ε" with temperature in the range 0-200°C.
could be obtained. The accuracy is rather low (≈ 5 percent). The second method uses a high-quality resonator which resonates at the same frequency in the mode if a sample of the proper dimensions is introduced. This method has a sensitivity and an accuracy < 1 percent. With both methods, measurements can be carried out in a large temperature range. Data on several ferrites and dielectrics show a large increase of ε" with temperature in the range 0-200°C.Keywords :
Dielectric loss measurement; Microwave magnetic materials; Dielectric loss measurement; Dielectric losses; Dielectric measurements; Frequency; Loss measurement; Microwave measurements; Microwave theory and techniques; Permittivity measurement; Temperature distribution; Temperature sensors;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1969.1066592
Filename :
1066592
Link To Document :
