JPS56138302A - Directional coupler for microstrip line - Google Patents

Directional coupler for microstrip line

Info

Publication number
JPS56138302A
JPS56138302A JP4181480A JP4181480A JPS56138302A JP S56138302 A JPS56138302 A JP S56138302A JP 4181480 A JP4181480 A JP 4181480A JP 4181480 A JP4181480 A JP 4181480A JP S56138302 A JPS56138302 A JP S56138302A
Authority
JP
Japan
Prior art keywords
coupling
line
incident
main line
directivity
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
JP4181480A
Other languages
Japanese (ja)
Inventor
Yoshifumi Ishizaki
Makoto Kawaguchi
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.)
Japan Radio Co Ltd
Original Assignee
Japan Radio 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 Japan Radio Co Ltd filed Critical Japan Radio Co Ltd
Priority to JP4181480A priority Critical patent/JPS56138302A/en
Publication of JPS56138302A publication Critical patent/JPS56138302A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports
    • H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
    • H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
    • H01P5/184—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers the guides being strip lines or microstrips
    • H01P5/185—Edge coupled lines

Abstract

PURPOSE:To improve the directivity, by giving inductance to the part opposing to the coupling line picking up a part of power on the main line and providing the means, increasing capacitance to the main line with both ends of the coupling section of the coupling line. CONSTITUTION:The coupler has the construction that the dielectric base 2 having the main line 1 and coupling line 1' is adhered to the ground plate 3, and the inductance is given by providing the slit 9 to the inside of the coupling part 8 of conductor pattern. Further, the distance between of the input terminal 10 of coupling part 8 and the coupling conductor of the output terminal 11 of the coupling part is made narrow to increase the capacitance. With the costitution like this, the propagation speed of an odd mode is slow and it is coincidence with that of the even mode of improve the directivity. Thus, the power due to only the incident wave incident from the input terminal 4 is given to the coupling terminal 6 with a prescribed degree of coupling and the leakage power due to the reflected wave incident to the output terminal 5, allowing to know the power level incident accurately.
JP4181480A 1980-03-31 1980-03-31 Directional coupler for microstrip line Pending JPS56138302A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4181480A JPS56138302A (en) 1980-03-31 1980-03-31 Directional coupler for microstrip line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4181480A JPS56138302A (en) 1980-03-31 1980-03-31 Directional coupler for microstrip line

Publications (1)

Publication Number Publication Date
JPS56138302A true JPS56138302A (en) 1981-10-28

Family

ID=12618772

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4181480A Pending JPS56138302A (en) 1980-03-31 1980-03-31 Directional coupler for microstrip line

Country Status (1)

Country Link
JP (1) JPS56138302A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03119805A (en) * 1989-10-03 1991-05-22 Kyocera Corp Microwave plane circuit adjusting method
US6549089B2 (en) * 2001-07-13 2003-04-15 Filtronic Pty Ltd. Microstrip directional coupler loaded by a pair of inductive stubs
EP1303001A1 (en) * 2001-10-13 2003-04-16 Marconi Communications GmbH A broadband microstrip directional coupler
CN104091988A (en) * 2014-07-04 2014-10-08 芜湖航飞科技股份有限公司 Microwave planar circuit coupler

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03119805A (en) * 1989-10-03 1991-05-22 Kyocera Corp Microwave plane circuit adjusting method
US6549089B2 (en) * 2001-07-13 2003-04-15 Filtronic Pty Ltd. Microstrip directional coupler loaded by a pair of inductive stubs
EP1303001A1 (en) * 2001-10-13 2003-04-16 Marconi Communications GmbH A broadband microstrip directional coupler
US6998936B2 (en) 2001-10-13 2006-02-14 Marconi Communications Gmbh Broadband microstrip directional coupler
CN104091988A (en) * 2014-07-04 2014-10-08 芜湖航飞科技股份有限公司 Microwave planar circuit coupler

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