NOW AVAILABLE ** New Program "INPUT_Z.exe"
This program calculates the often required input impedance, Z = R+jX, of a coaxial transmission line when terminated with a load impedance such as a radio antenna. It uses full classical transmission line formulae and therefore avoids the errors inherent in the Smith Chart at the lower radio frequencies.
Also calculated are line attenuation, reflection coefficient, angle of reflection coefficient, SWR, power efficiency, and the line loss in decibels in the presence of SWR.
Input data of frequency, line length, load resistance and load reactance can be varied in small increments from the keyboard to allow line behaviour to be observed. The diameter of the coaxial inner conductor is also input, this being needed for calculating loss in the line which affects input impedance.
Download program INPUT_Z (40 K-bytes) in a few seconds from website below and run imediately.
---- ........................................................... Regards from Reg, G4FGQ For Free Radio Design Software go to