Topic: Antennas and Wave Propagation
The beam-width and the directivity of an antenna are:
- A. Directly proportional
- B. Inversely proportional
- C. Independent of each other
- D. Equal
Answer: B. Inversely proportional
Explanation: Directivity = 41253 / (theta_1 * theta_2), where theta_1 and theta_2 are beam-width in E, H plane. So directivity is inversely proportional to beam-width.