Flat filter and filter system

Application Number  00129218 Application Date  2000.09.29
Publication Number  1290052 Publication Date  2001.04.04
Priority Information   1999/9/29 JP 276626/1999  
Applicant(s) Name  K.K. Toshiba  
Inventor(s) Name  Teratori Yoshiaki;Fukuie Hiroyuki;Kayano Hiroyuki  
Patent Agency Code  11038 Patent Agent  feng xun
AbstractA planar filter comprises a filter member which has plural tuning members made of superconductor film and is located on the input/output part of the two sides of the tuning member through the gaps of the dielectric substrate; and a tuning part made of magnetic material located to face the filter member with a prescribed interval and a DC magnetic field is applied thereon. The tuning part comprises dielectric constant tuning part for tuning the gap edges between the tuning members and the effective dielectric constant of at least one of the gap edges between the input/output parts and the tuning members.