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JPS55138901A - Branching filter - Google Patents

Branching filter

Info

Publication number
JPS55138901A
JPS55138901A JP4606379A JP4606379A JPS55138901A JP S55138901 A JPS55138901 A JP S55138901A JP 4606379 A JP4606379 A JP 4606379A JP 4606379 A JP4606379 A JP 4606379A JP S55138901 A JPS55138901 A JP S55138901A
Authority
JP
Japan
Prior art keywords
waveguide
coupling
holes
sub
band
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
JP4606379A
Other languages
Japanese (ja)
Other versions
JPS606566B2 (en
Inventor
Takao Itanami
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 JP4606379A priority Critical patent/JPS606566B2/en
Publication of JPS55138901A publication Critical patent/JPS55138901A/en
Publication of JPS606566B2 publication Critical patent/JPS606566B2/en
Expired 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 obtain a branching filter which is small-sized and low in loss, by forming it with a directional coupler by one set of main waveguide and sub-waveguide coupled through the holes where a dielectric has been inserted respectively whose band of strong degree of coupling is narrow and other band is weak in degree of coupling. CONSTITUTION:The main waveguide 2 and the sub-waveguide have a common wall 20 on the surface E, and coupling holes 10, 10' are provided in it. Into the coupling holes 10, 10' are inserted the dielectric whose space is 1/4 of the wavelength in the main waveguide and the sub-waveguide of the branching frequency, and whose thickness is 1/4 of the wavelength in the coupling hole tubes of the branching frequency. And a signal of the frequency component conforming to the band which is able to take a strong degree of coupling in the coupling holes 10, 10' among the input signals having the frequency components of f1+f2+...fN is fetched from the terminal 11 through the waveguide 2, the coupling holes 10, 10' and the waveguide 6.
JP4606379A 1979-04-17 1979-04-17 duplexer Expired JPS606566B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4606379A JPS606566B2 (en) 1979-04-17 1979-04-17 duplexer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4606379A JPS606566B2 (en) 1979-04-17 1979-04-17 duplexer

Publications (2)

Publication Number Publication Date
JPS55138901A true JPS55138901A (en) 1980-10-30
JPS606566B2 JPS606566B2 (en) 1985-02-19

Family

ID=12736543

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4606379A Expired JPS606566B2 (en) 1979-04-17 1979-04-17 duplexer

Country Status (1)

Country Link
JP (1) JPS606566B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0588570U (en) * 1992-05-02 1993-12-03 ジョイパックアミューズメント株式会社 Golf tee

Also Published As

Publication number Publication date
JPS606566B2 (en) 1985-02-19

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