JPS5588405A - Directional coupler - Google Patents

Directional coupler

Info

Publication number
JPS5588405A
JPS5588405A JP15934078A JP15934078A JPS5588405A JP S5588405 A JPS5588405 A JP S5588405A JP 15934078 A JP15934078 A JP 15934078A JP 15934078 A JP15934078 A JP 15934078A JP S5588405 A JPS5588405 A JP S5588405A
Authority
JP
Japan
Prior art keywords
waveguide
line
microstrip line
lambdag
directional coupler
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
JP15934078A
Other languages
Japanese (ja)
Inventor
Shinya Nakai
Taro Miura
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.)
TDK Corp
Original Assignee
TDK 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 TDK Corp filed Critical TDK Corp
Priority to JP15934078A priority Critical patent/JPS5588405A/en
Publication of JPS5588405A publication Critical patent/JPS5588405A/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

Abstract

PURPOSE:To realize a compact and easy-to-handle directional coupler which can be mounted to the microwave oven by coupling the microstrip line to the waveguide of the electronic and then providing the attenuator to the microstrip line. CONSTITUTION:It is supposed that the electric wave travels along waveguide 2 from end B to end A, and a pair of holes I and II are installed about at the center of face E of the waveguide with the space of l1. The value of l1 is selected as l1= lambdag/4, where lambdag is the wavelength of the microwave within the waveguide. And microstrip line S is provided near the hole outside waveguide 2 and orthogonally to waveguide 2 as if line S were combined to the electromagnetic wave within the waveguide, and the both ends of line S are referred to as C and D each. At the same time, length l2 of line S is set as l2=3/4lambdag' (lambdag': wavelength at the microstrip line) at the area where holes I and II are combined together.
JP15934078A 1978-12-26 1978-12-26 Directional coupler Pending JPS5588405A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15934078A JPS5588405A (en) 1978-12-26 1978-12-26 Directional coupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15934078A JPS5588405A (en) 1978-12-26 1978-12-26 Directional coupler

Publications (1)

Publication Number Publication Date
JPS5588405A true JPS5588405A (en) 1980-07-04

Family

ID=15691686

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15934078A Pending JPS5588405A (en) 1978-12-26 1978-12-26 Directional coupler

Country Status (1)

Country Link
JP (1) JPS5588405A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009090938A1 (en) * 2008-01-15 2009-07-23 Noritsu Koki Co., Ltd. Directional coupler circuit board, directional coupler, and plasma producing apparatus
JP2009171094A (en) * 2008-01-15 2009-07-30 Noritsu Koki Co Ltd Directional coupler and plasma generator using the same
JP2009171095A (en) * 2008-01-15 2009-07-30 Noritsu Koki Co Ltd Directional coupler and plasma generator using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009090938A1 (en) * 2008-01-15 2009-07-23 Noritsu Koki Co., Ltd. Directional coupler circuit board, directional coupler, and plasma producing apparatus
JP2009171094A (en) * 2008-01-15 2009-07-30 Noritsu Koki Co Ltd Directional coupler and plasma generator using the same
JP2009171095A (en) * 2008-01-15 2009-07-30 Noritsu Koki Co Ltd Directional coupler and plasma generator using the same
JPWO2009090938A1 (en) * 2008-01-15 2011-05-26 株式会社サイアン Directional coupling circuit board, directional coupler, and plasma generator

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