Symbols Frequently Used In Text

Author: Edmund A. Laport

Symbols	Meaning
A	Area included in current-distribution plot, degree-amperes; also a symbol for special quantities
C	Capacitance in farads
c	Free-space wave velocity (3108 meters per second)
D	Distance
d	Diameter; distance
E	Electric field strength, volts per meter
F	Field strength; a functional notation
f	Frequency; a functional notation
f0	Fundamental frequency
G	Length of a conductor, electrical degrees
Gh	Length of a horizontal conductor, electrical degrees
Gv	Length of a vertical conductor, electrical degrees
G0	Length of a vertical conductor, radians
h	Height above ground
I	Current, amperes
j	Operator = = a 90-degree rotation counterclockwise
L	Inductance in henrys
l	Length (physical)
Q	Dissipation factor X/R; a standing-wave ratio Imax/Imin
R	Resistance, ohms
r	Radial distance
V	Potential, volts
v	Velocity of propagation, meters per second
W	Power, watts
X	Reactance, ohms
Z	Impedance, ohms
Z0	Characteristic impedance, ohms
Zm	Mutual impedance, ohms
α	Angle above the horizontal; also the attenuation factor in the propagation constant
β	Azimuth angle from some reference direction
ε	Inductivity or dielectric constant
θ	A colatitude angle in polar coordinates; also occasionally used as general designation for an angle
λ	Free-space wavelength in meters
λ0	Fundamental wavelength in meters
ρ	Radius
σ	Conductivity
φ	Phase difference; a longitude angle in polar coordinates
ψ	Phase difference; a latitude angle
ω	Angular frequency 2πf

1	This is the value used for ordinary engineering purposes. The latest measurements give the velocity as 299,792 kilometers per second.