JPS57204604A - Shared branching filter for orthogonal double polarized wave - Google Patents

Shared branching filter for orthogonal double polarized wave

Info

Publication number
JPS57204604A
JPS57204604A JP8980981A JP8980981A JPS57204604A JP S57204604 A JPS57204604 A JP S57204604A JP 8980981 A JP8980981 A JP 8980981A JP 8980981 A JP8980981 A JP 8980981A JP S57204604 A JPS57204604 A JP S57204604A
Authority
JP
Japan
Prior art keywords
wave
waveguide
square
mode
equal
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
JP8980981A
Other languages
Japanese (ja)
Other versions
JPS625531B2 (en
Inventor
Fumio Takeda
Osami Ishida
Yoji Isoda
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8980981A priority Critical patent/JPS57204604A/en
Publication of JPS57204604A publication Critical patent/JPS57204604A/en
Publication of JPS625531B2 publication Critical patent/JPS625531B2/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
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H01P1/2131—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies with combining or separating polarisations

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)
  • Waveguide Switches, Polarizers, And Phase Shifters (AREA)

Abstract

PURPOSE:To obtain a shared branching filter for orthogonal double polarized wave, by forming a tapered waveguide with a square waveguide and varying the taper in a curve. CONSTITUTION:The higher order mode produced from a square tapered waveguide 3 is equal to a TM2 (square shape) mode and opposite to a TM11 (round shape) mode of a round waveguide, and the cutoff frequency fCTM21 is equal to fCTM21=335.19/a2 (GHz). While the cutoff frequency fCTE10 of the basic wave TE10 (square shape) mode of the square waveguide is equal to 149.9/a2 (GHz). Accordingly fH/fL is set at 2.236-fold value (2.08 with the round tapered waveguide) to realize a wide band. At the same time, a change of position is reduced for the equivalent reflective surface of a tapered waveguide 3 to the wave within the band fL by varying the taper in a curve. As a result, the optimum position has no big change by the frequency for a coupling hole 2 for the branching of the wave of fL. Thus the brahching filter characteristics can be improved over a wide range for the wave of fL.
JP8980981A 1981-06-11 1981-06-11 Shared branching filter for orthogonal double polarized wave Granted JPS57204604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8980981A JPS57204604A (en) 1981-06-11 1981-06-11 Shared branching filter for orthogonal double polarized wave

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8980981A JPS57204604A (en) 1981-06-11 1981-06-11 Shared branching filter for orthogonal double polarized wave

Publications (2)

Publication Number Publication Date
JPS57204604A true JPS57204604A (en) 1982-12-15
JPS625531B2 JPS625531B2 (en) 1987-02-05

Family

ID=13981044

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8980981A Granted JPS57204604A (en) 1981-06-11 1981-06-11 Shared branching filter for orthogonal double polarized wave

Country Status (1)

Country Link
JP (1) JPS57204604A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1261066A2 (en) * 2001-05-23 2002-11-27 Marconi Mobile SpA Improvements in or relating to diplexer apparatus
JP2016092447A (en) * 2014-10-29 2016-05-23 三菱電機株式会社 Polarized wave separation circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019123796A1 (en) 2017-12-22 2019-06-27 オリンパス株式会社 Endoscope system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1261066A2 (en) * 2001-05-23 2002-11-27 Marconi Mobile SpA Improvements in or relating to diplexer apparatus
EP1261066A3 (en) * 2001-05-23 2003-08-13 Marconi Mobile SpA Improvements in or relating to diplexer apparatus
JP2016092447A (en) * 2014-10-29 2016-05-23 三菱電機株式会社 Polarized wave separation circuit

Also Published As

Publication number Publication date
JPS625531B2 (en) 1987-02-05

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