Title :
Temperature stabilization of a lumped element circulator without an apparent compensating element
Author :
Miura, T. ; Hasegawa, M. ; Oh´hata, H. ; Kurahashi, T.
Author_Institution :
TDK Techno Corp., Chiba, Japan
Abstract :
An experiment has shown that a thermostable circulator can be fabricated by inserting a small capacitor between the ground and the ferrite. The analysis and the characteristics estimated using the element eigenvalues have confirmed the experimental result. A circulator based on the above thermostabilization has shown that the bandwidth was expanded more than twofold in the temperature range from -25/spl deg/C to 85/spl deg/C.
Keywords :
UHF devices; eigenvalues and eigenfunctions; ferrite circulators; thermal stability; -25 to 85 C; capacitor; element eigenvalues; ferrite; lumped element circulator; temperature stabilization; thermostable circulator; Bandwidth; Capacitors; Eigenvalues and eigenfunctions; Equivalent circuits; Frequency; Inductance; Land surface temperature; Magnetic analysis; Magnetic circuits; Magnetic materials;
Conference_Titel :
Microwave Symposium Digest, 1999 IEEE MTT-S International
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
0-7803-5135-5
DOI :
10.1109/MWSYM.1999.779593
