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EXCEL_TRANSLINE.pdf - ENGR. ARVIN B. ALDOVER ¨ Transmission...

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ENGR. ARVIN B. ALDOVER
¨Transmission Line is a metallic conductor system thatis used to transfer electrical energy from one point toanother.
Transmission Linesa device designed toguide electricalenergy from onepoint to anotherused to connect thetransmitter and theantennait must maintain theintegrity of thesignals in bothdirection
¨Electromagnetic Waves are form of radiant energy like heat, light,radio, X-ray, and television waves that are considered to be oscillatorydisturbances in free space.
¨LONGITUDINAL¡The displacement is in the direction ofpropagation¨TRANSVERSE¡The direction of displacement is perpendicular tothe direction of propagation
¨Wave Velocity¨Frequency¨Wavelengthcfl=
¨It consists simply of two parallelwires, closely spaced and separated byair.¨The distance between two conductorsis generally between 2 inches and 6inches.¨high radiation losses and electricalnoise pickup¨The dielectric is air.
¨Twin Lead is also known asRibbon Cable.¨Twin Lead is essentially thesame with Open-wiretransmission line except thatit is separated by soliddielectric rather than air.¨The distance of twoconductors is 5/16 inch fortelevision transmission cable.
¨A twisted-pair cable isformed by twisting togethertwo insulated conductors.¨Twisted-pair configuration:¡Pair¡Units¡Cores
ETHERNET CABLE MAXIMUM LENGTHSSPECIFICATIONCABLE TYPEMAXIMUM LENGTH10BaseTUnshielded Twisted Pair100 metres10Base2Thin coaxial cable180 metres10Base5Thick coaxial cable500 metres10BaseFFibre optic cable2000 metres100BaseTUnshielded twisted pair100 metres100BaseTXUnshielded twisted pair220 metres
Shielded Pairparallel conductorsseparated fromeach other andsurrounded by asolid dielectricthe conductors arebalanced to ground
¨Coaxial cables are used extensively for high-frequency applications to reduce losses and toisolate transmission paths.¨Coaxial cable provides excellent shieldingagainstexternal interference.

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Term
Fall
Professor
NoProfessor
Tags
Transmission line, Impedance matching, ZL

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