Investigation of optimised YIG-Al substituted garnets in high-power below-resonance circulators

Author

Frender, R. ; Glogier, W. ; Mróz, T.

Author_Institution

Telecommun. Res. Inst., Warsaw, Poland

Volume

2

fYear

2002

fDate

2002

Firstpage

447

Abstract

This paper presents some results of our investigation for finding an optimised garnet material suitable for ferrite devices operating at high power levels with the magnetic field polarities for below-resonance range. It is shown that by using an appropriate doping with rare-earth ions it is possible to achieve low-loss properties of a circulator both at low and at high power levels. The garnets were tested in waveguide and stripline circulators designed for L, S and C bands.

Keywords

doping profiles; ferrite circulators; ferroresonance; garnets; microwave circulators; optimisation; yttrium compounds; YAlFe5O12:Ho; YAlIG:Ho; YGdFe5O12:Dy; YGdIG:Dy; YIG-Al substituted garnet optimization; below-resonance range ferrite device doping; ferrite device magnetic field polarities; low/high-power below-resonance circulators; material low-loss properties; microwave circulators; rare earth ion doping; stripline circulators; waveguide circulators; Chemicals; Circulators; Composite materials; Earth; Ferrites; Garnets; Magnetic fields; Magnetic materials; Magnetic properties; Microwave bands;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwaves, Radar and Wireless Communications, 2002. MIKON-2002. 14th International Conference on

Print_ISBN

83-906662-5-1

Type

conf

DOI

10.1109/MIKON.2002.1017884

Filename

1017884