🔍 Key Concepts

• Bandwidth in radio communications usually refers to a range of usable frequencies, not a physical dimension • How an antenna is judged to "perform well" across different frequencies (e.g., acceptable Standing Wave Ratio, efficiency, radiation pattern) • The difference between frequency range terms and radiation pattern angle terms like beamwidth or half-power points

💭 Think About

• Ask yourself: Is bandwidth normally describing a size/angle, or a spread of frequencies? • Which option talks about how wide a range of frequencies the antenna can operate on and still be effective? • Which choices seem to describe physical geometry or directional pattern of the antenna rather than its usable frequency range?

✅ Before You Answer

• Eliminate any choices that describe angles in the radiation pattern rather than frequency spread • Eliminate any choices that only use physical dimensions (length, elements) without mentioning frequency or performance • Look for the option that clearly links frequency range with acceptable antenna performance over that range