Title:
BANDPASS FILTER
Document Type and Number:
Japanese Patent JP2022138076
Kind Code:
A
Abstract:
To achieve a bandpass filter capable of increasing a pass attenuation amount at a high-pass side of a passband.SOLUTION: A bandpass filter 1 comprises: a first input-output port 2; a second input-output port 3; a first high-pass filter 12; a first low-pass filter 11; and a first stub type resonator 41. The first stub type resonator 41 includes a first distribution constant line 41A. The first low-pass filter 11 is provided between the first input-output port 2 and the first high-pass filter 12 in constituting a circuit. The first distribution constant line 41A has: a first end 41Aa connected with a first path 5 for connecting between the first input-output port 2 and the first low-pass filter 11; and a second end 41Ab closest to the ground in constituting a circuit.SELECTED DRAWING: Figure 1
Inventors:
SATO TAKUYA
ASHIDA YUTA
ASHIDA YUTA
Application Number:
JP2021037867A
Publication Date:
September 22, 2022
Filing Date:
March 09, 2021
Export Citation:
Assignee:
TDK CORP
International Classes:
H01F17/00; H03H7/075; H01F27/00; H01P1/20
Attorney, Agent or Firm:
Patent Business Corporation Itoshin International Patent Office