SE8004258L - Elektronisk gaffelkoppling - Google Patents

Elektronisk gaffelkoppling

Info

Publication number: SE8004258L
Authority: SE; Sweden
Prior art keywords: voltage; impedance; order; realized; match
Prior art date: 1978-10-10

Application number

SE8004258A

Other languages

English (en)

Other versions

SE428856B (sv

Inventor

H Seidel

Original Assignee

Western Electric Co

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.)

1978-10-10

Filing date

1980-06-06

Publication date

1980-06-06

1980-06-06 Application filed by Western Electric Co filed Critical Western Electric Co

1980-06-06 Publication of SE8004258L publication Critical patent/SE8004258L/sv

1983-07-25 Publication of SE428856B publication Critical patent/SE428856B/sv

Links

230000008878 coupling Effects 0.000 title 1
238000010168 coupling process Methods 0.000 title 1
238000005859 coupling reaction Methods 0.000 title 1
230000000694 effects Effects 0.000 abstract 1
230000002194 synthesizing effect Effects 0.000 abstract 1

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/54—Circuits using the same frequency for two directions of communication
- H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/586—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa using an electronic circuit

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Networks Using Active Elements (AREA)
Interface Circuits In Exchanges (AREA)

SE8004258A 1978-10-10 1980-06-06 Elektronisk gaffelkoppling SE428856B (sv)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US05/949,577 US4174470A (en)	1978-10-10	1978-10-10	Electronic hybrid

Publications (2)

Publication Number	Publication Date
SE8004258L true SE8004258L (sv)	1980-06-06
SE428856B SE428856B (sv)	1983-07-25

Family

ID=25489270

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE8004258A SE428856B (sv)	1978-10-10	1980-06-06	Elektronisk gaffelkoppling

Country Status (14)

Country	Link
US (1)	US4174470A (sv)
JP (1)	JPS55500804A (sv)
AU (1)	AU526596B2 (sv)
BE (1)	BE879280A (sv)
CA (1)	CA1136229A (sv)
DE (1)	DE2953174C2 (sv)
ES (1)	ES484854A1 (sv)
FR (1)	FR2438941A1 (sv)
GB (1)	GB2043408B (sv)
IL (1)	IL58393A (sv)
IT (1)	IT1124585B (sv)
NL (1)	NL7920114A (sv)
SE (1)	SE428856B (sv)
WO (1)	WO1980000769A1 (sv)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CA1123131A (en) *	1978-02-28	1982-05-04	Michael C.J. Cowpland	Transformerless trunk circuit
JPS54136253A (en) *	1978-04-14	1979-10-23	Nec Corp	Adaptive type electronic hybrid circuit
US4273963A (en) *	1979-05-25	1981-06-16	Bell Telephone Laboratories, Incorporated	Automatic equalization for digital transmission systems
DE3019835C2 (de) *	1980-05-23	1983-12-01	Siemens AG, 1000 Berlin und 8000 München	Übertragerfreie Gabelschaltung
US4377858A (en) *	1980-10-23	1983-03-22	International Telephone And Telegraph Corporation	Digital two-to-four wire converter for full duplex signals
US4381561A (en) *	1980-10-23	1983-04-26	International Telephone And Telegraph Corporation	All digital LSI line circuit for analog lines
US4322586A (en) *	1980-11-13	1982-03-30	Northern Telecom Limited	Transformerless line interface circuit
JPS5895488A (ja) *	1981-12-02	1983-06-07	Hitachi Ltd	ライン回路
US5822426A (en) *	1995-06-06	1998-10-13	International Business Machines Corporation	Balanced hybrid circuit
US6681012B1 (en)	1999-09-23	2004-01-20	Nortel Networks Limited	Directional receiver coupling arrangement with frequency selectivity and gain control for DSL
US6788745B1 (en) *	1999-11-17	2004-09-07	Fujitsu Limited	Circuit and method for active termination of a transmission line
KR20020096008A (ko) *	2001-06-19	2002-12-28	엘지전자 주식회사	안테나 정합 회로망
US8385538B2 (en) *	2008-12-10	2013-02-26	Utc Fire & Security Americas Corporation, Inc.	Method, system, and apparatus for a differential transformer-free hybrid circuit

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3178521A (en) *	1962-11-15	1965-04-13	Bell Telephone Labor Inc	Dynamically balanced telephone network
US3530260A (en) *	1966-12-23	1970-09-22	Bell Telephone Labor Inc	Transistor hybrid circuit
GB1115216A (en) *	1967-02-28	1968-05-29	Standard Telephones Cables Ltd	Hybrid transformer
FR2160308B1 (sv) *	1971-11-19	1977-01-28	Labo Cent Telecommunicat
US3753786A (en) *	1972-03-29	1973-08-21	Gould Inc	Method and apparatus for adjusting battery electrolyte concentration
US3973089A (en) *	1973-10-29	1976-08-03	General Electric Company	Adaptive hybrid circuit
US3970805A (en) *	1974-02-22	1976-07-20	Gte Automatic Electric (Canada) Limited	Active hybrid circuit
US3919502A (en) *	1974-08-19	1975-11-11	Bell Telephone Labor Inc	Balancing network for voice frequency telephone repeaters
US3982080A (en) *	1975-01-16	1976-09-21	Bell Telephone Laboratories, Incorporated	Automatic cable balancing network
US4004109A (en) *	1975-05-09	1977-01-18	Boxall Frank S	Hybrid circuit
US4064377A (en) *	1976-03-11	1977-12-20	Wescom Switching, Inc.	Electronic hybrid and hybrid repeater
US4074087A (en) *	1976-08-16	1978-02-14	Bell Telephone Laboratories, Incorporated	Bidirectional voice frequency repeater
US4096361A (en) *	1977-06-20	1978-06-20	Bell Telephone Laboratories, Incorporated	Test apparatus for obtaining impedance settings for hybrid balance networks
US4163878A (en) *	1977-09-07	1979-08-07	Wescom, Inc.	Electronic hybrid and hybrid repeater with bridge circuit

1978
- 1978-10-10 US US05/949,577 patent/US4174470A/en not_active Expired - Lifetime
1979
- 1979-09-26 DE DE2953174A patent/DE2953174C2/de not_active Expired
- 1979-09-26 GB GB8018004A patent/GB2043408B/en not_active Expired
- 1979-09-26 WO PCT/US1979/000784 patent/WO1980000769A1/en not_active Ceased
- 1979-09-26 NL NL7920114A patent/NL7920114A/nl unknown
- 1979-09-26 JP JP50186179A patent/JPS55500804A/ja active Pending
- 1979-10-04 IL IL58393A patent/IL58393A/xx unknown
- 1979-10-08 IT IT26319/79A patent/IT1124585B/it active
- 1979-10-09 BE BE0/197539A patent/BE879280A/fr not_active IP Right Cessation
- 1979-10-09 CA CA000337232A patent/CA1136229A/en not_active Expired
- 1979-10-09 ES ES484854A patent/ES484854A1/es not_active Expired
- 1979-10-09 AU AU51596/79A patent/AU526596B2/en not_active Ceased
- 1979-10-10 FR FR7925206A patent/FR2438941A1/fr active Granted
1980
- 1980-06-06 SE SE8004258A patent/SE428856B/sv not_active IP Right Cessation

Also Published As

Publication number	Publication date
FR2438941B1 (sv)	1985-01-11
IL58393A0 (en)	1980-01-31
GB2043408B (en)	1983-01-26
SE428856B (sv)	1983-07-25
WO1980000769A1 (en)	1980-04-17
NL7920114A (nl)	1980-08-29
AU526596B2 (en)	1983-01-20
AU5159679A (en)	1980-04-17
ES484854A1 (es)	1980-05-16
CA1136229A (en)	1982-11-23
DE2953174C2 (de)	1986-05-15
BE879280A (fr)	1980-02-01
FR2438941A1 (fr)	1980-05-09
GB2043408A (en)	1980-10-01
IL58393A (en)	1981-12-31
IT1124585B (it)	1986-05-07
IT7926319A0 (it)	1979-10-08
US4174470A (en)	1979-11-13
DE2953174A1 (en)	1980-12-04
JPS55500804A (sv)	1980-10-16

Legal Events

Date

Code

Title

Description

1995-01-31

NUG

Patent has lapsed

Ref document number: 8004258-3

Effective date: 19880622

Format of ref document f/p: F

Publication	Publication Date	Title
SE8004259L (sv)	1980-06-06	Balanseringsimpedans for en gaffelkoppling
SE8004258L (sv)	1980-06-06	Elektronisk gaffelkoppling
GB1288943A (sv)	1972-09-13
DE69023272D1 (de)	1995-12-07	HF-Stecker zur Verbindung eines Radiotelefonapparates mit einer aussenliegenden Antenne.
GB726067A (en)	1955-03-16	Microwave coupling arrangements
JPS5671301A (en)	1981-06-13	Common device for antenna
GB1254608A (en)	1971-11-24	Multiunit loudspeaker
JPS5549008A (en)	1980-04-08	High-frequency and high-output transistor amplifier
JPS54101641A (en)	1979-08-10	3 decibel power distributor
GB729405A (en)	1955-05-04	Improvements in or relating to electric wave filters employing waveguides
JPS5419365A (en)	1979-02-14	High frequency high output transistor
JPS56107601A (en)	1981-08-26	Coaxial filter
JPS5531337A (en)	1980-03-05	Resistive terminator
NL7510026A (en)	1977-03-01	Signal divider with decoupled output for cable transmission - has bridge network with impedance arms including impedance of signal source
JPS57170603A (en)	1982-10-20	Branching filter circuit
JPS5494258A (en)	1979-07-25	High frequency filter
JPS51120651A (en)	1976-10-22	Matching equipment
JPS53145455A (en)	1978-12-18	High-frequency attenuator
JPS57136812A (en)	1982-08-24	High frequency branching synthesizer
JPS5444853A (en)	1979-04-09	Directional coupler
JPS5444854A (en)	1979-04-09	Directional coupler
JPS5539491A (en)	1980-03-19	Impedance circuit network
JPS5674946A (en)	1981-06-20	Microwave circuit substrate
JPS55614A (en)	1980-01-07	Frequency characteristic adjustment circuit
VALTONEN	1971	A new synthesis method for branch-guide directional couplers(Network synthesis for narrowband branch-guide directional coupling circuits)