| Title | Measurements of Leaky Coaxial Cables and Possible Applications to Train Communication |
|---|---|
| Record ID | 48958 |
| Personal Name Creator |
Yoh, P.; Esposito, R.; Gagnon, R.; Kodis, Ralph D. |
| Corporate Creator | John A. Volpe National Transportation Systems Center (U.S.) |
| Publisher | United States. Department of Transportation. Federal Railroad Administration |
| Publication Date | 19740501 |
| Language | English |
| Abstract | The electrical and radiation properties of the Radiax have been measured. The main results are: i) the surface wave exists, ii) the radial radiation follows 1/r2 relation for frequency below 190 MHz and 1/r relation for frequency near 400 MHz, iii) the transverse radiation pattern is nearly omnidirectional, iv) the coherent band-width is on the order of 3 MHz and the operating frequency range is several hundred megahertz; and v) better coupling efficiency is observed at lower frequency. Possible applications for railroad communication are discussed. |
| Rosap ID | dot:10445 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/10445 |
| TRT Terms | Electromagnetic devices; Coaxial cables; Communication; Communication systems; Transmission; Railroads; Radio |
| General Subjects | Leaky coax radio communications; Railroad communication; Transmission line |
| Classification | NTL - RAIL TRANSPORTATION - High Speed Ground Transportation; NTL - RAIL TRANSPORTATION - RAIL TRANSPORTATION |
| Geographical Coverage |
United States |
| Contract Number | R4301/RR404 |
| Report Number | DOT-TSC-FRA-73-15; FRA-73-15; FRA-ORD&D-74-43 |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/48000/48900/48958/DOT-TSC-FRA-73-15.pdf |
| Format | |
| Database | NTL Digital Repository |