Dr.
S.
Cruz-Pol, INEL 4152Electromagnetics
Electrical Engineering, UPRM 1
Polarization:
Why do we care??
• Antenna applications –
– Antenna can only TX or RX a polarization it is designed to support.
Straight
wires, square waveguides, and similar...
More
Dr.
S.
Cruz-Pol, INEL 4152Electromagnetics
Electrical Engineering, UPRM 1
Polarization:
Why do we care??
• Antenna applications –
– Antenna can only TX or RX a polarization it is designed to support.
Straight
wires, square waveguides, and similar rectangular systems support linear
waves (polarized in one direction, often) Round waveguides, helical or flat
spiral antennas produce circular or elliptical waves.
• Remote Sensing and Radar Applications –
– Many targets will reflect or absorb EM waves differently for different
polarizations.
Using multiple polarizations can give different information
and improve results.
• Absorption applications –
– Human body, for instance, will absorb waves with E oriented from head to
toe better than side-to-side, esp.
in grounded cases.
Also, the frequency at
which maximum absorption occurs is different for these two polarizations.
This has ramifications in safety guidelines and studies.
Cruz-Pol,ECE Dept.
UPRM
Polarization
• In general, plan
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