BAND PASS FILTER - MITSUBISHI DENKI TOKKI SYSTEM KK

Title:

BAND PASS FILTER

Document Type and Number:

Japanese Patent JP2018067863

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a band pass filter capable of acquiring a large magnitude of attenuation at an out-of-band frequency with little loss at around a band center frequency.SOLUTION: A band pass filter 20 includes: a tip open line 3 which is provided between a main line 6 on which a signal propagates and the ground and which has a length of 1/4 wavelength at a lower out-of-band frequency than a band center frequency; and a parallel circuit which is connected in parallel to the tip open line 3 and has a tip short-circuit line 4 with a length of 1/2 wavelength at a higher out-of-band frequency than the band center frequency. Characteristic impedance with the tip open line 3 and the tip short-circuit line 4 resonate in parallel at the band center frequency.SELECTED DRAWING: Figure 1

Inventors:

NOZAWA MANAMI
KIYONO KIYOHARU

Application Number:

JP2016206660A

Publication Date:

April 26, 2018

Filing Date:

October 21, 2016

Export Citation:

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