InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
What is the directivity of antenna having effective aperture 1 m^2?(a) \(\frac{4\pi}{\lambda^2}\)(b) \(\frac{\lambda^2}{4\pi}\)(c) 1(d) 4πI had been asked this question in an international level competition.My question comes from Directivity in portion Antenna Parameters of Antennas |
|
Answer» CORRECT option is (a) \(\FRAC{4\pi}{\lambda^2}\) To elaborate: Directivity D=\(\frac{4\pi}{\lambda^2}A_e\) Given effective APERTURE Ae=1m^2 ⇨ D=\(\frac{4\pi}{\lambda^2}A_e = \frac{4\pi}{\lambda^2}× 1 =\frac{4\pi}{\lambda^2}\) |
|