IT1070376B - Metodo ed apparecchiatura per le radiocomunicazioni e/o radiosegnalazioni in ambienti limitati con prevalente sviluppo longitudinale e collegati con l'esterno alle estremita'anche sotterranei specialmente gallerie anche di notevole lunghezza - Google Patents
Metodo ed apparecchiatura per le radiocomunicazioni e/o radiosegnalazioni in ambienti limitati con prevalente sviluppo longitudinale e collegati con l'esterno alle estremita'anche sotterranei specialmente gallerie anche di notevole lunghezzaInfo
- Publication number
- IT1070376B IT1070376B IT09381/76A IT938176A IT1070376B IT 1070376 B IT1070376 B IT 1070376B IT 09381/76 A IT09381/76 A IT 09381/76A IT 938176 A IT938176 A IT 938176A IT 1070376 B IT1070376 B IT 1070376B
- Authority
- IT
- Italy
- Prior art keywords
- radiocommunications
- equipment
- outside
- radio signals
- considerable length
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/28—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium using the near field of leaky cables, e.g. of leaky coaxial cables
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Near-Field Transmission Systems (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT09381/76A IT1070376B (it) | 1976-03-22 | 1976-03-22 | Metodo ed apparecchiatura per le radiocomunicazioni e/o radiosegnalazioni in ambienti limitati con prevalente sviluppo longitudinale e collegati con l'esterno alle estremita'anche sotterranei specialmente gallerie anche di notevole lunghezza |
CH1466376A CH615306A5 (en) | 1976-03-22 | 1976-11-22 | Process and apparatus for the transmission of radio signals in a confined medium with longitudinal prevailing development and which is linked to the outside at the ends |
DE19772712498 DE2712498A1 (de) | 1976-03-22 | 1977-03-22 | Verfahren und anordnung fuer die funkverbindung bzw. funksignalisierung in begrenzten raeumen mit vorwiegend laenglicher ausbildung |
FR7708522A FR2345865A1 (fr) | 1976-03-22 | 1977-03-22 | Procede et appareils pour les radiocommunications et/ou les radiosignalisations en milieux clos |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT09381/76A IT1070376B (it) | 1976-03-22 | 1976-03-22 | Metodo ed apparecchiatura per le radiocomunicazioni e/o radiosegnalazioni in ambienti limitati con prevalente sviluppo longitudinale e collegati con l'esterno alle estremita'anche sotterranei specialmente gallerie anche di notevole lunghezza |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1070376B true IT1070376B (it) | 1985-03-29 |
Family
ID=11129275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT09381/76A IT1070376B (it) | 1976-03-22 | 1976-03-22 | Metodo ed apparecchiatura per le radiocomunicazioni e/o radiosegnalazioni in ambienti limitati con prevalente sviluppo longitudinale e collegati con l'esterno alle estremita'anche sotterranei specialmente gallerie anche di notevole lunghezza |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH615306A5 (it) |
DE (1) | DE2712498A1 (it) |
FR (1) | FR2345865A1 (it) |
IT (1) | IT1070376B (it) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3907733A1 (de) * | 1989-03-10 | 1990-09-20 | Bergwerksverband Gmbh | Verfahren und einrichtung zur funkuebertragung in untertaegigen grubenbauen ohne wellenleiter |
DE3910944C1 (en) * | 1989-04-05 | 1991-01-17 | Siebert, Gerhard, 3200 Hildesheim, De | Arrangement for setting up radio traffic between mobile stations in underground mining |
DE3942320A1 (de) * | 1989-10-10 | 1991-04-11 | Wk Elektronik Gmbh | Anordnung zur kommunikation in einem bergwerk, insbesondere in einem salzbergwerk |
US5627879A (en) * | 1992-09-17 | 1997-05-06 | Adc Telecommunications, Inc. | Cellular communications system with centralized base stations and distributed antenna units |
DE4335345A1 (de) * | 1993-10-16 | 1995-04-20 | Sel Alcatel Ag | Funkfeststation und Antennenanordnung zur Funkversorgung eines Tunnels |
US6112086A (en) | 1997-02-25 | 2000-08-29 | Adc Telecommunications, Inc. | Scanning RSSI receiver system using inverse fast fourier transforms for a cellular communications system with centralized base stations and distributed antenna units |
US6704545B1 (en) | 2000-07-19 | 2004-03-09 | Adc Telecommunications, Inc. | Point-to-multipoint digital radio frequency transport |
US7184728B2 (en) | 2002-02-25 | 2007-02-27 | Adc Telecommunications, Inc. | Distributed automatic gain control system |
US7171244B2 (en) | 2002-12-03 | 2007-01-30 | Adc Telecommunications, Inc. | Communication system and method with gain control for signals from distributed antennas |
US7103377B2 (en) | 2002-12-03 | 2006-09-05 | Adc Telecommunications, Inc. | Small signal threshold and proportional gain distributed digital communications |
US8958789B2 (en) | 2002-12-03 | 2015-02-17 | Adc Telecommunications, Inc. | Distributed digital antenna system |
US8583100B2 (en) | 2007-01-25 | 2013-11-12 | Adc Telecommunications, Inc. | Distributed remote base station system |
US8737454B2 (en) | 2007-01-25 | 2014-05-27 | Adc Telecommunications, Inc. | Modular wireless communications platform |
US9001811B2 (en) | 2009-05-19 | 2015-04-07 | Adc Telecommunications, Inc. | Method of inserting CDMA beacon pilots in output of distributed remote antenna nodes |
US9577922B2 (en) | 2014-02-18 | 2017-02-21 | Commscope Technologies Llc | Selectively combining uplink signals in distributed antenna systems |
US10499269B2 (en) | 2015-11-12 | 2019-12-03 | Commscope Technologies Llc | Systems and methods for assigning controlled nodes to channel interfaces of a controller |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3517315A (en) * | 1967-06-21 | 1970-06-23 | Itt | Mobile telephone transmitter selector circuit |
DD108017A1 (it) * | 1973-10-29 | 1974-08-20 | ||
GB1485156A (en) * | 1974-08-07 | 1977-09-08 | Coal Ind | Radiating line telecommunication systems |
-
1976
- 1976-03-22 IT IT09381/76A patent/IT1070376B/it active
- 1976-11-22 CH CH1466376A patent/CH615306A5/it not_active IP Right Cessation
-
1977
- 1977-03-22 FR FR7708522A patent/FR2345865A1/fr not_active Withdrawn
- 1977-03-22 DE DE19772712498 patent/DE2712498A1/de not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
FR2345865A1 (fr) | 1977-10-21 |
CH615306A5 (en) | 1980-01-15 |
DE2712498A1 (de) | 1978-01-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
IT1070376B (it) | Metodo ed apparecchiatura per le radiocomunicazioni e/o radiosegnalazioni in ambienti limitati con prevalente sviluppo longitudinale e collegati con l'esterno alle estremita'anche sotterranei specialmente gallerie anche di notevole lunghezza | |
IT1143566B (it) | Procedimento ed apparecchio per lo sfruttamento di sorgenti geotermi che sotterranee | |
JPS5299901A (en) | Drill string buffer device | |
GB1542219A (en) | Boring bits and method of making same | |
ZA767639B (en) | Pneumatic hammer-auger earth boring apparatus | |
SE7703315L (sv) | Borrapparat | |
ZA773155B (en) | Rock bit bearing structure | |
JPS52128918A (en) | Inorganic hard foamed substance and its production | |
DK132092D0 (da) | Thieno- og -furooe2,3-baa og -oe3,2-baapyridiner | |
ZA774637B (en) | Rock drilling method | |
JPS52126013A (en) | Earth drilling apparatus | |
AT376341B (de) | Breitband-tunnelfunkanlage | |
JPS5341026A (en) | Underground structure | |
JPS5374727A (en) | Underground cavity tunneling method | |
JPS5341025A (en) | Underground structure | |
JPS5356834A (en) | Construction method of underground structure that use tunnel | |
JPS5383324A (en) | Long box culvert tunnel structure and method of building same | |
JPS5286240A (en) | Tunnel construction method | |
JPS535813A (en) | Earth drilling apparatus | |
JPS5314933A (en) | Method of tunnel construction | |
JPS54160023A (en) | Tunnel structure and its constructing method | |
JPS5358803A (en) | Drilling and pumping means | |
JPS5378901A (en) | Boring method and its device | |
JPS53614A (en) | Sheathing apparatus and construction method of underground structure | |
JPS5334601A (en) | Subsoil drilling equipment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19950327 |