Which term describes the direction of the electric field lines?

Which term describes the direction of the electric field lines?

• A. Aperture
• B. Impedance
• C. Polarization
• D. Feedhorn

Answer: (C)

Polarization explains how the electric field points as the wave travels. The electric field lines show the instantaneous direction of the E field, and over time they reveal the polarization state. If the field oscillates along one fixed direction, that’s linear polarization with a specific orientation. If the direction rotates, you get circular or elliptical polarization. In SATCOM, matching the transmitter and receiver polarization is important for maximizing received power and minimizing cross-polarization losses. The other terms refer to different parts or properties: aperture is the opening that collects energy, impedance describes how readily energy moves through a system, and a feedhorn is a component that guides waves into the antenna, not the direction of the electric field.

Polarization explains how the electric field points as the wave travels. The electric field lines show the instantaneous direction of the E field, and over time they reveal the polarization state. If the field oscillates along one fixed direction, that’s linear polarization with a specific orientation. If the direction rotates, you get circular or elliptical polarization. In SATCOM, matching the transmitter and receiver polarization is important for maximizing received power and minimizing cross-polarization losses. The other terms refer to different parts or properties: aperture is the opening that collects energy, impedance describes how readily energy moves through a system, and a feedhorn is a component that guides waves into the antenna, not the direction of the electric field.