NO172468C - DIRECTOR CONNECTOR BRANCH FOR COMMON ANTENNA AND CABLE DISTRIBUTION SYSTEM - Google Patents
DIRECTOR CONNECTOR BRANCH FOR COMMON ANTENNA AND CABLE DISTRIBUTION SYSTEMInfo
- Publication number
- NO172468C NO172468C NO892592A NO892592A NO172468C NO 172468 C NO172468 C NO 172468C NO 892592 A NO892592 A NO 892592A NO 892592 A NO892592 A NO 892592A NO 172468 C NO172468 C NO 172468C
- Authority
- NO
- Norway
- Prior art keywords
- branch
- directional coupler
- distributors
- branch connection
- single distributor
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/48—Networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source
- H03H7/482—Networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source particularly adapted for use in common antenna systems
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Near-Field Transmission Systems (AREA)
- Details Of Television Systems (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Motorcycle And Bicycle Frame (AREA)
- Discharge Heating (AREA)
- Earth Drilling (AREA)
- Radar Systems Or Details Thereof (AREA)
- Radiation-Therapy Devices (AREA)
- Photoreceptors In Electrophotography (AREA)
Abstract
In known directional coupler-distributors for the wide-band coupling-out of a part of the radio-frequency signal energy transmitted via a main line, which consist of at least two cascaded single distributors, at least one of which is constructed in directional coupler technique with a current and a voltage transformer and an internal terminating resistor (R) which is connected to earth at one end, branch attenuations of </= 13 dB cannot be achieved or only to a slight extent and with considerable circuit expenditure with adequate decoupling of the output (A) from the branch connection (AB) and good values for transmission loss and return losses. To avoid these disadvantages in as simple and inexpensive a manner as possible, it is provided in accordance with the invention that the internal terminating resistor of each directional-coupler single distributor be formed by its branch impedance by connecting its branch connection (2, 35) to that of the immediately preceding single distributor, that the branch of the last directional coupler single distributor is the only branch connection (AB) and that all currents coupled out of the current transformers (Ü1, Ü2, Ü4) have at least approximately the same phase.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3821365A DE3821365A1 (en) | 1988-06-24 | 1988-06-24 | ALIGNMENT COUPLERS |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| NO892592D0 NO892592D0 (en) | 1989-06-22 |
| NO892592L NO892592L (en) | 1989-12-27 |
| NO172468B NO172468B (en) | 1993-04-13 |
| NO172468C true NO172468C (en) | 1993-07-21 |
Family
ID=6357181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO892592A NO172468C (en) | 1988-06-24 | 1989-06-22 | DIRECTOR CONNECTOR BRANCH FOR COMMON ANTENNA AND CABLE DISTRIBUTION SYSTEM |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0347604B1 (en) |
| AT (1) | ATE93103T1 (en) |
| DE (2) | DE3821365A1 (en) |
| ES (1) | ES2043947T3 (en) |
| NO (1) | NO172468C (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3537036A (en) * | 1968-11-06 | 1970-10-27 | John R Winegard | Directional line drop tap unit |
| US3716806A (en) * | 1971-08-19 | 1973-02-13 | M Zelenz | Signal coupling apparatus utilizing hybrid transformer |
| DE3028683C2 (en) * | 1980-07-29 | 1984-02-16 | Richard Hirschmann Radiotechnisches Werk, 7300 Esslingen | Multiple branching device for high-frequency signals |
-
1988
- 1988-06-24 DE DE3821365A patent/DE3821365A1/en active Granted
-
1989
- 1989-05-24 DE DE8989109309T patent/DE58905228D1/en not_active Expired - Fee Related
- 1989-05-24 AT AT89109309T patent/ATE93103T1/en not_active IP Right Cessation
- 1989-05-24 ES ES89109309T patent/ES2043947T3/en not_active Expired - Lifetime
- 1989-05-24 EP EP89109309A patent/EP0347604B1/en not_active Expired - Lifetime
- 1989-06-22 NO NO892592A patent/NO172468C/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0347604A3 (en) | 1990-09-12 |
| NO172468B (en) | 1993-04-13 |
| DE3821365C2 (en) | 1992-02-27 |
| NO892592L (en) | 1989-12-27 |
| NO892592D0 (en) | 1989-06-22 |
| EP0347604A2 (en) | 1989-12-27 |
| DE58905228D1 (en) | 1993-09-16 |
| ATE93103T1 (en) | 1993-08-15 |
| ES2043947T3 (en) | 1994-01-01 |
| EP0347604B1 (en) | 1993-08-11 |
| DE3821365A1 (en) | 1989-12-28 |
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