{"title":"Leaky-feeder radio communication: A historical review","authors":"D.J.R. Martin","doi":"10.1109/VTC.1984.1623231","DOIUrl":null,"url":null,"abstract":"Problems of radio communication in mines, tunnels and other confined spaces are being increasingly solved by the use of leaky-feeder techniques. As first described in 1956 these comprised a simple open-braided coax or a twin-lead connected to one or more standard VHF base stations: nowadays they incorporate remarkably simple and inexpensive line-powered signal boosters or 'repeaters' to compensate for line losses as they occur and can provide virtually unlimited range without dependence on linking land-lines. For use in coal mines the entire system can be made intrinsically safe, since the power drawn by a typical present-day signal booster need be only a few milliwatts of DC.","PeriodicalId":178210,"journal":{"name":"34th IEEE Vehicular Technology Conference","volume":"74 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1984-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"30","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"34th IEEE Vehicular Technology Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/VTC.1984.1623231","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 30
Abstract
Problems of radio communication in mines, tunnels and other confined spaces are being increasingly solved by the use of leaky-feeder techniques. As first described in 1956 these comprised a simple open-braided coax or a twin-lead connected to one or more standard VHF base stations: nowadays they incorporate remarkably simple and inexpensive line-powered signal boosters or 'repeaters' to compensate for line losses as they occur and can provide virtually unlimited range without dependence on linking land-lines. For use in coal mines the entire system can be made intrinsically safe, since the power drawn by a typical present-day signal booster need be only a few milliwatts of DC.
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