Appendix B: Fundamental Parameters - SARK 110 User Manual

Appendix B:
Abbreviation Parameter
Rs Series resistance
Xs Series reactance
Rp Parallel resistance
Xp Parallel reactance
|Zs| Magnitude of a
series Impedance
<Zs Impedance Angle
VSWR Voltage Standing
Wave Ratio
RL Return Losses
(S11 dB)
CL Cable Losses
|Rho| Magnitude of a
Reflection
Coefficient (Rho or
S11)
rd
Rev 1.2.6 October 3 , 2015
SARK SARK- - - - 110
SARK SARK
Fundamental Parameters
Resistive value of a series impedance
Reactance value of a series impedance
Resistive value of a parallel impedance
Reactance value of a parallel impedance
Represents the absolute magnitude of the ratio of the
voltage difference amplitude to the current amplitude.
(
=
| Z | R
It is a measure of the phase angle of the ratio of the
amplitude of the voltage to the amplitude of the current,
expressed in degrees.
It is a measure of how efficiently radio-frequency power is
transmitted from a power source, through a transmission
line and into a load (for example, from a power amplifier
through a transmission line and into an antenna).
Return loss is the negative of the magnitude of the
reflection coefficient in dB.
=
RL 20
Measurement of insertion loss of a cable in dB. The
measurement should be performed by applying a short
circuit at the cable end.
CL =
ABS
It is a measure of the absolute magnitude of the ratio of
the amplitude of the reflected wave to the amplitude of the
incident wave.
- 71 -
110
110 110
Description
)
+
2 2
X
×
log 10 ( Rho )
RL
( )
2
© Melchor Varela – EA4FRB 2011-2015
User's Manual