公开(公告)号：JPH1065402A

公开(公告)日：1998-03-06

申请号：JP16597696

申请日：1996-06-26

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KUWANYAN KAN ,  SEOOKUKIRU HAN ,  JEHA KIMU

IPC: H01L39/24 ,  H01L39/02 ,  H01P1/203

Abstract: PROBLEM TO BE SOLVED: To provide the low pass filter adopting the microstrip open stub line system in which an unevenness of a passing rate at a pass band is reduced and a flatness degree is improved. SOLUTION: The low pass filter adopting the microstrip open stub line system includes a filter pattern consisting of a single crystal substrate 4 with an excellent microwave characteristic, of an input terminal 1a for signal transmission formed to one side corner on the single crystal substrate 4, of an output terminal 1b for signal transmission formed to the other side corner opposite to the one side corner at which the input terminal 1a for signal transmission on the single crystal substrate 4 is formed, of five stub conductors 3 filtering a signal and formed perpendicularly to the signal progress direction between the input terminal 1a and the output terminal 1b on the single crystal substrate 4, and of four strip conductors 2 formed perpendicularly to the stub conductor 3, and a ground conductor 5 (Ti/Ag) formed under the single crystal substrate 4.