Feeder cable

presentation on panel antenna......

1. FEEDER CABLE PRESENTED BY :- sOURABH TYAGI

2. CONTENTS 1 2 B D efination Types of feeder cable Aluminum feeder cable Copper feeder cable C Different between Aluminum & copper cable A Normal cable 3 4 Leaki cable

3. 1 Defination :- • Cables used to transfer radio frequency signal between base stations transmitter and antenna. • Quality and reliability must be of the highest standard. • it’s generally used in telecom sector

4. NORMAL CABLE OR CO-AXIAL CABLE :- • It’s made by pure copper. White color insulator of it’s second layer . • Outer core made by copper shield or mash . it’s shield copper • Hard and black in color , insulation cover • It is impedance of 75 Ω . • The size of this cable is less than ½ inch Here is…..A outer plastic sheet B woven copper shield c inner dielectric shield d copper core

5. Aluminum feeder cable :- • Inner core is made by pure cyclendrical tube . Fitted with soft insulation . White color soft foam type insulation. • The outer core made of by aluminum with silver file. • Outer insulation black color hard insulation . it is curve or with out curve to reduce the impedance . for increasing the conductivity Impedance 50 Ω size 7/8 inch or 5/4 inch . Generally its cable design for mobility sector. Manufacture- andrew . Filox It is a less cost compare to copper. it is reliability .because of the aluminum made it. •

6. Copper feeder cable :- • It is made of by pure copper cyclendrical tube . Size of the inner core is less than 2 mm . Soft white color , soft insulation. Outer insulation is made by pure cyclendrical tube . It is with or without curve in shape. Size of this cable is 7/8 inch or 5/4 inch. • • Impedance of this cable is 50 Ω .generally it is design for mobility sector . it is Used for 2g and 3g. Manufacture by andrues . Helax Amphirol Nokia . Inner core hollow for consuption so decrease resistivity It is take a less flexible resistance. reduce flexibility get increase.

7. Leake cable :- Generally leake cable used as ground antenna or cable. According to cable property the charges travel From a one source to another on outer of cable surface or body In metro caves there are reach signal with the help of this property . Generally it is made by copper . normaly size is 5/8 inch or 7/8 inch

8. Technical comparision for 7/8” feeder cable Aluminum copper cable Aluminum aluminum Copper Attenuation (ref. RFS LCF-type) • 900 (db/100m): 3.71 dB • 1800 MHz (db/100m): 5.48 dB Outer conductor: Copper Outer conductor: Aluminum Inner conductor: Copper Aluminum conductor: Copper Bending radius, single (7/8”) > 120mm Easy bending Bending radius, single (7/8”) > 127mm weight: 0.51 kg/m Retains shape for bending Weight: 0.37 kg/m Connectorization – 10 min Fast connectorization – 3 Min Special tool recommended for connectorization . Mandatory special Coring & stripping tool for connectorization. Vendor specific connectors Connectors from multiple vendors Attenuation 900 (db/100m): 3.68 dB 1800 MHz (db/100m): 5.38 dB