Title:
【発明の名称】導波管帯域通過フィルター
Document Type and Number:
Japanese Patent JP2871725
Kind Code:
B2
Abstract:
By combining four hexagonal ferrite spheres (22,30.32,38) under the same electromagnet structure, a magnetically tuneable bandpass filter (10) can be built in waveguide yielding high off resonance isolation, while keeping insertion loss to a reasonable value. Implementations of this filter in A, Q, U, and V bands have typical off resonance isolation greater than 70 dB and insertion loss less than 13 dB for full-band tuning. The filter can be utilized as a preselector for swept-frequency signal analyzers, for example.
Inventors:
DEIIN BII NIKORUSON
ROBAATO JEE MATORESHI
ROBAATO JEE MATORESHI
Application Number:
JP12999489A
Publication Date:
March 17, 1999
Filing Date:
May 23, 1989
Export Citation:
Assignee:
HYUURETSUTO PATSUKAADO CO
International Classes:
H01P1/218; H01P7/00; (IPC1-7): H01P1/218; H01P7/00
Other References:
【文献】電子通信学会編「フェライトを用いた最近のマイクロ波回路技術」昭和48年,第154頁 図7.11(a)
Attorney, Agent or Firm:
Hideo Ueno