JPS55112001A - Band pass type filtering device - Google Patents

Band pass type filtering device

Info

Publication number
JPS55112001A
JPS55112001A JP2040579A JP2040579A JPS55112001A JP S55112001 A JPS55112001 A JP S55112001A JP 2040579 A JP2040579 A JP 2040579A JP 2040579 A JP2040579 A JP 2040579A JP S55112001 A JPS55112001 A JP S55112001A
Authority
JP
Japan
Prior art keywords
transmitted
terminal
wavelength
phase difference
pass type
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2040579A
Other languages
Japanese (ja)
Other versions
JPS6129565B2 (en
Inventor
Nobushige Tsukada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2040579A priority Critical patent/JPS55112001A/en
Publication of JPS55112001A publication Critical patent/JPS55112001A/en
Publication of JPS6129565B2 publication Critical patent/JPS6129565B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE:To obtain the impedance characteristics of the constant resistance in addition to the high band attenuation property by forming the band blocking filter so as to obtain the mutual phase difference of 1/4 wavelength when viewed from the hybrid. CONSTITUTION:The input sent from terminal 12 is divided into two parts through hybrid circuit 2 and then transmitted to band blocking filters 4 and 5 with the equal amplitude as well as the phase difference of 1/4 wavelength. If the coincidence is secured then between the resonance frequency and the power frequency, the transmitted input is reflected by filters 4 and 5 to be transmitted to branching point 13 of circuit 2 with more addition of the phase difference of 1/4 wavelength and with the equal amplitude and the opposite phase each. Thus the input signal does not return to terminal 12, and the composite power is transmitted to terminal 11 to be then transmitted to terminal 10 through band pass type filter 1.
JP2040579A 1979-02-22 1979-02-22 Band pass type filtering device Granted JPS55112001A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2040579A JPS55112001A (en) 1979-02-22 1979-02-22 Band pass type filtering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2040579A JPS55112001A (en) 1979-02-22 1979-02-22 Band pass type filtering device

Publications (2)

Publication Number Publication Date
JPS55112001A true JPS55112001A (en) 1980-08-29
JPS6129565B2 JPS6129565B2 (en) 1986-07-08

Family

ID=12026108

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2040579A Granted JPS55112001A (en) 1979-02-22 1979-02-22 Band pass type filtering device

Country Status (1)

Country Link
JP (1) JPS55112001A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63203144A (en) * 1987-02-17 1988-08-23 ベン・アレン・ア−ノルド Calibration phantom for quantitative computer tomographic system for measuring mineral of bone

Also Published As

Publication number Publication date
JPS6129565B2 (en) 1986-07-08

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