The directivity of an antenna in terms of the aperture efficiency and operating wavelength is given by:

The directivity of an antenna in terms of the aperture efficiency and

1.	The directivity of an antenna in terms of the aperture efficiency and operating wavelength is given by:
A.	4 Ae/ <sup>2</sup>
B.	2 Ae/ <sup>2</sup>
C.	Ae/ <sup>2</sup>
D.	None of the mentioned
Answer» B. 2 Ae/ <sup>2</sup>