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JPS5573101A - Reflective periodic branching filter - Google Patents

Reflective periodic branching filter

Info

Publication number
JPS5573101A
JPS5573101A JP14600978A JP14600978A JPS5573101A JP S5573101 A JPS5573101 A JP S5573101A JP 14600978 A JP14600978 A JP 14600978A JP 14600978 A JP14600978 A JP 14600978A JP S5573101 A JPS5573101 A JP S5573101A
Authority
JP
Japan
Prior art keywords
polarized wave
coupler
paths
featuring
phase
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.)
Pending
Application number
JP14600978A
Other languages
Japanese (ja)
Inventor
Takaichi Watanabe
Nobuo Nakajima
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP14600978A priority Critical patent/JPS5573101A/en
Publication of JPS5573101A publication Critical patent/JPS5573101A/en
Pending 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
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies

Landscapes

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

Abstract

PURPOSE:To secure the sharper rise for the amplitude characteristics by inserting the reflective periodic delay circuits featuring the equal delay characteristics to each other into the two paths branched off by the coupler. CONSTITUTION:The reflective periodic branching filter consists of polarized wave separator 6, coupler 7, circular polarized wave generators 8 and 8', periodic delay circuits 9 and 9' plus metal reflector plates 5 and 5' each. When the electromagmetic wave containing the vertical polarized wave including the signal channels of frequencies f1, f2... is put in through terminal 1, the electromagnetic wave transmitted and converted into the horizontal polarized wave through separator 6 is divided equally into two parts through coupler 7 to be then converted into the circular polarized wave through generators 8 and 8'. The electromagnetic waves branched off to paths 3 and 4 are reflected by plates 5 and 5' after passing through circuits 9 and 9' featuring the same delay characteristics. Thus the phase receives the staircase-type change, and characteristics 10 and 11 of the phase variation at paths 3 and 4 feature an integer-fold phase difference of pi via the five frequencies between resonance points 13. As a result, the band featuring the same or opposite phase is expanded when the electromagnetic waves of paths 3 and 4 are compounded via coupler 7, thus ensuring an extremely sharp rise for the amplitude characteristics.
JP14600978A 1978-11-28 1978-11-28 Reflective periodic branching filter Pending JPS5573101A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14600978A JPS5573101A (en) 1978-11-28 1978-11-28 Reflective periodic branching filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14600978A JPS5573101A (en) 1978-11-28 1978-11-28 Reflective periodic branching filter

Publications (1)

Publication Number Publication Date
JPS5573101A true JPS5573101A (en) 1980-06-02

Family

ID=15398019

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14600978A Pending JPS5573101A (en) 1978-11-28 1978-11-28 Reflective periodic branching filter

Country Status (1)

Country Link
JP (1) JPS5573101A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4745965A (en) * 1984-03-07 1988-05-24 Furukawa Electric Co., Ltd. Separate type heat exchanger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4745965A (en) * 1984-03-07 1988-05-24 Furukawa Electric Co., Ltd. Separate type heat exchanger

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