DocumentCode
3194747
Title
Ferrite tuned millimeter wave bandpass filters with high off resonance isolation
Author
Nicholson, D.
Author_Institution
Hewlett-Packard, Santa Rosa, CA, USA
fYear
1988
fDate
25-27 May 1988
Firstpage
867
Abstract
By combining four hexagonal ferrite spheres under the same magnet structure, magnetically tunable bandpass filters were built in waveguide yielding increased off-resonance isolation (ORI), while keeping insertion loss (IL) to a reasonable value. Examples of these filters for the 26.5-40-GHz, 33-50-GHz, 40-60-GHz, and 50-75-GHz ranges are presented with typical ORI above 70 dB and IL less than 13 dB for full band tuning. A performance summary for these four sphere waveguide filters is given showing the similar performance obtained in the different bands.<>
Keywords
band-pass filters; ferrite applications; microwave filters; passive filters; tuning; waveguide components; 13 dB; 26.5 to 75 GHz; EHF; MM-wave type; bandpass filters; hexagonal ferrite spheres; insertion loss; magnetically tunable; millimeter wave; waveguide; Band pass filters; Electromagnetic heating; Ferrites; Magnetic anisotropy; Magnetic fields; Magnetic resonance; Magnetic separation; Microwave technology; Millimeter wave technology; Perpendicular magnetic anisotropy;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Symposium Digest, 1988., IEEE MTT-S International
Conference_Location
New York, NY, USA
Type
conf
DOI
10.1109/MWSYM.1988.22169
Filename
22169
Link To Document