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The region within the influence of the induction field of an antenna.
Antenna which is not properly terminated
If an antenna has a gain of 30 dB, it increases the output of the transmitter by
The ratio of incident and reflected voltage waves representing transmission and reflection coefficients used to characterize a linear microwave device.
A transmission line has a capacitance of 25 pF / ft. and an inductance of 0.15 mH / ft. Determine the characteristic impedance of the line
An electronic equipment used to measure standing wave ratio.
What is the front-to-back ratio of an antenna which radiates 500 watts in a northernly direction and 50 watts in a southernly direction?
Refers to the shortest distance in which a sky-wave signal will be returned to the earth. It includes the maximum ground-wave range and the width of the skip zone.
An open circuit line greater than wavelenght/4 but less than wavelenght/2 in length will exhibit _____ reactance.
What is a short (< l/4) length of transmission line, shorted at one end and attached at the appropriate distance from the load for the purpose of matching a complex load to the transmission line?
__________ is the amount of voltage induced in a wave by an electromagnetic wave
Refers to the numeric ratio relating to the radiated signal strength of an antenna to that of another antenna
VHF radio wave signals are propagated
Two or more antennas are used, separated by several wavelengths
What is the effect of standing waves on a transmission line?
The shortest distance measured along the earth’s surface that a skywave is returned to eart
Calculate the time delay in nanosecond introduced by a 100 ft coaxial cable with a dielectric constant of 2.3.
What is the orientation of the electric field of an antenna to the earth’s surface and antenna structure?
An electromagnetic wave consists of
