JPS6489802A - Directional coupler - Google Patents

Directional coupler

Info

Publication number
JPS6489802A
JPS6489802A JP24650087A JP24650087A JPS6489802A JP S6489802 A JPS6489802 A JP S6489802A JP 24650087 A JP24650087 A JP 24650087A JP 24650087 A JP24650087 A JP 24650087A JP S6489802 A JPS6489802 A JP S6489802A
Authority
JP
Japan
Prior art keywords
coupling
coupling section
coarse
frequency band
dense
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
JP24650087A
Other languages
Japanese (ja)
Inventor
Junichi Maruta
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.)
Anritsu Corp
Original Assignee
Anritsu 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 Anritsu Corp filed Critical Anritsu Corp
Priority to JP24650087A priority Critical patent/JPS6489802A/en
Publication of JPS6489802A publication Critical patent/JPS6489802A/en
Pending legal-status Critical Current

Links

Landscapes

  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

PURPOSE:To obtain a sufficient directivity at a coupling frequency band by coating and arranging a coated dielectric to increase the effective dielectric constant more than the dense coupling part onto the coarse coupling part. CONSTITUTION:A coarse coupling section 4a and a dense coupling section 4b having an electric length equal to nearly 1/4 wavelength of the center frequency of the coupling frequency band are formed continuously in the coupling section 4 and the coated dielectric substance 5 having a higher effective dielectric constant than the close coupling part 4b is provided. The signal fed to an input terminal 1a of a couple of center conductors 1, 1 is outputted from an output terminal 1c via the coarse coupling section 4a and the dense coupling section 4b, then the coated dielectric substance 5 provided on the coarse coupling section 4a reduce the phase speed difference of the balanced/unbalanced mode. Thus, the signal is sent while the directivity is improved in the coupling frequency band.
JP24650087A 1987-09-30 1987-09-30 Directional coupler Pending JPS6489802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24650087A JPS6489802A (en) 1987-09-30 1987-09-30 Directional coupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24650087A JPS6489802A (en) 1987-09-30 1987-09-30 Directional coupler

Publications (1)

Publication Number Publication Date
JPS6489802A true JPS6489802A (en) 1989-04-05

Family

ID=17149320

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24650087A Pending JPS6489802A (en) 1987-09-30 1987-09-30 Directional coupler

Country Status (1)

Country Link
JP (1) JPS6489802A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5169224A (en) * 1990-07-25 1992-12-08 Nissan Motor Co., Ltd. Discharge head lamp assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS478831U (en) * 1971-03-03 1972-10-03
JPS5423447A (en) * 1977-07-25 1979-02-22 Toshiba Corp Strip line coupling circuit
JPS5538740A (en) * 1978-09-12 1980-03-18 Fujitsu Ltd Directional coupler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS478831U (en) * 1971-03-03 1972-10-03
JPS5423447A (en) * 1977-07-25 1979-02-22 Toshiba Corp Strip line coupling circuit
JPS5538740A (en) * 1978-09-12 1980-03-18 Fujitsu Ltd Directional coupler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5169224A (en) * 1990-07-25 1992-12-08 Nissan Motor Co., Ltd. Discharge head lamp assembly

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