21-12-2012, 12:21 PM
MICROWAVE TRANSMISSION LINE
MICROWAVE TRANSMISSION.ppt (Size: 675 KB / Downloads: 57)
MICROWAVES
Microwaves are EM waves with frequency range from 1GHz to 1000 GHz
Microwave frequency range includes the UHF, SHF, & EHF.
To solve Microwave network theory problems Maxwell's equations or distributed circuit theory are applied.
TRANSMISSION LINES
TL may be a power line or communication line
power lines are used for transmission of electric power with frequency 50 Hz or 60 Hz.
Communication lines used for signal transmission.
CO-AXIAL CABLE
Co-axial cable consist of two conductors which are separated by dielectric material like polythene.
TWISTED PAIR CABLE
Used at Low frequency telephone application.
Consist of number of pair of wires running parallel.
Open Wire Line
In this type amount of solid dielectric is not used, but only few SPACERS are required to separate the conductors.