The electrical performance indicators of the antenna include (). (Multiple choice)

Question

Options

• AGain
• BLobe Width
• CPower size
• DPolarization

• A
  71% (20)
• C
  29% (8)

Explanation

Gain (A), Lobe Width (B), and Polarization (D) are all electrical performance indicators because they describe how an antenna transmits or receives electromagnetic energy - measurable properties defined by the antenna's electrical design and behavior in the RF domain.

• Gain measures how efficiently the antenna focuses radiated power in a given direction compared to a reference antenna.
• Lobe Width (beamwidth) describes the angular spread of the main radiation beam, directly tied to directivity.
• Polarization defines the orientation of the electric field wave - a fundamental electrical characteristic affecting signal compatibility.

Power size (C) is wrong because it refers to the magnitude of input/output power, which is a system-level or transmitter parameter, not an intrinsic electrical property of the antenna itself - antennas can operate at any power level without changing their electrical characteristics.

Memory tip: Think "G-L-P = Good antenna specs" (Gain, Lobe width, Polarization). If a parameter describes how the antenna shapes or orients the wave, it's an electrical indicator. If it describes how much power is fed into it, it's not.

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