GB9918976D0 - 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
GB9918976D0
GB9918976D0 GBGB9918976.3A GB9918976A GB9918976D0 GB 9918976 D0 GB9918976 D0 GB 9918976D0 GB 9918976 A GB9918976 A GB 9918976A GB 9918976 D0 GB9918976 D0 GB 9918976D0
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.)
Granted
Application number
GBGB9918976.3A
Other versions
GB2343790B (en
GB2343790A (en
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

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01PWAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00Coupling devices of the waveguide type
    • H01P5/12Coupling devices having more than two ports
    • H01P5/16Conjugate devices, i.e. devices having at least one port decoupled from one other port
    • H01P5/18Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
    • H01P5/184Conjugate 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
    • H01P5/185Edge coupled lines
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01PWAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00Coupling devices of the waveguide type
    • H01P5/04Coupling 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 true GB9918976D0 (en) 1999-10-13
GB2343790A GB2343790A (en) 2000-05-17
GB2343790B 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)

Families Citing this family (6)

* 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
CN103367855A (en) * 2013-06-27 2013-10-23 华为技术有限公司 Radio frequency coupler
US20220393326A1 (en) * 2021-06-02 2022-12-08 Skyworks Solutions, Inc. Directional coupler with multiple arrangements of termination

Family Cites Families (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
AT393048B (en) * 1987-04-17 1991-07-25 Siemens Ag Oesterreich ALIGNMENT COUPLER IN MICROSTRIP TECHNOLOGY
EP0828308B1 (en) * 1996-03-22 2004-08-25 Matsushita Electric Industrial Co., Ltd. Low-pass filter with directional coupler and portable telephone set using the same

Also Published As

Publication number Publication date
JP2000059240A (en) 2000-02-25
GB2343790B (en) 2003-08-20
GB2343790A (en) 2000-05-17

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Legal Events

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

Effective date: 20080811