Several precautions are required to avoid reflections that would lead to standing waves and the consequent nonuniform power distribution within the subarrays : ( 1 ) Each stripline is terminated by a matched load that consists of several wavelengths of resistive strip line.
12.
So one could as well model the operation of the parasitic element as the superposition of a dipole element receiving power and sending it down a transmission line to a matched load, and a transmitter sending the same amount of power up the transmission line back toward the antenna element.
13.
If a dual-polarization matched load is available in place of the ideal OMT, this allows 2? measurements from the single-polarization ports, yielding only 2 of the reflection terms ( S _ { HH } and S _ { HH } ) and one IPI ( S _ { HV } ).
14.
The noise power at the output of the amplifier ( i . e . the noise power coupled to an impedance-matched load that is connected to the amplifier output ) is " P out = Gk B ( T R + T amp ) B ", where " G " is the amplifier power gain and " T amp " is the amplifier noise temperature.
