GB2343790B - Transmission output control apparatus having a directional coupler with a variable coupling length - Google Patents

Transmission output control apparatus having a directional coupler with a variable coupling length

Info

Publication number
GB2343790B
GB2343790B GB9918976A GB9918976A GB2343790B GB 2343790 B GB2343790 B GB 2343790B GB 9918976 A GB9918976 A GB 9918976A GB 9918976 A GB9918976 A GB 9918976A GB 2343790 B GB2343790 B GB 2343790B
Authority
GB
United Kingdom
Prior art keywords
control apparatus
output control
directional coupler
transmission output
coupling length
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.)
Expired - Fee Related
Application number
GB9918976A
Other versions
GB2343790A (en
GB9918976D0 (en
Inventor
Hiroshi Morifusa
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Publication of GB9918976D0 publication Critical patent/GB9918976D0/en
Publication of GB2343790A publication Critical patent/GB2343790A/en
Application granted granted Critical
Publication of GB2343790B publication Critical patent/GB2343790B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/04—Coupling devices of the waveguide type with variable factor of coupling
GB9918976A 1998-08-11 1999-08-11 Transmission output control apparatus having a directional coupler with a variable coupling length Expired - Fee Related GB2343790B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10226849A JP2000059240A (en) 1998-08-11 1998-08-11 Transmission output control method and its circuit

Publications (3)

Publication Number Publication Date
GB9918976D0 GB9918976D0 (en) 1999-10-13
GB2343790A GB2343790A (en) 2000-05-17
GB2343790B true GB2343790B (en) 2003-08-20

Family

ID=16851538

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9918976A Expired - Fee Related GB2343790B (en) 1998-08-11 1999-08-11 Transmission output control apparatus having a directional coupler with a variable coupling length

Country Status (2)

Country Link
JP (1) JP2000059240A (en)
GB (1) GB2343790B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103367855A (en) * 2013-06-27 2013-10-23 华为技术有限公司 Radio frequency coupler

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012015591A (en) * 2010-06-29 2012-01-19 Fujitsu Ltd Output control device and transmitter
JP5573885B2 (en) * 2012-04-27 2014-08-20 横河電機株式会社 Self-diagnosis circuit
US9312592B2 (en) 2013-03-15 2016-04-12 Keysight Technologies, Inc. Adjustable directional coupler circuit
US11586956B2 (en) 2013-05-28 2023-02-21 Keysight Technologies, Inc. Searching apparatus utilizing sub-word finite state machines
US20220393326A1 (en) * 2021-06-02 2022-12-08 Skyworks Solutions, Inc. Directional coupler with multiple arrangements of termination

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62159502A (en) * 1986-01-07 1987-07-15 Alps Electric Co Ltd Directional coupler
EP0291694A1 (en) * 1987-04-17 1988-11-23 Siemens Aktiengesellschaft Österreich Directional coupler
EP0828308A1 (en) * 1996-03-22 1998-03-11 Matsushita Electric Industrial Co., Ltd. Low-pass filter with directional coupler and portable telephone set using the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62159502A (en) * 1986-01-07 1987-07-15 Alps Electric Co Ltd Directional coupler
EP0291694A1 (en) * 1987-04-17 1988-11-23 Siemens Aktiengesellschaft Österreich Directional coupler
EP0828308A1 (en) * 1996-03-22 1998-03-11 Matsushita Electric Industrial Co., Ltd. Low-pass filter with directional coupler and portable telephone set using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103367855A (en) * 2013-06-27 2013-10-23 华为技术有限公司 Radio frequency coupler

Also Published As

Publication number Publication date
GB2343790A (en) 2000-05-17
GB9918976D0 (en) 1999-10-13
JP2000059240A (en) 2000-02-25

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20080811