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A rectangular horn antenna has an aperture area of 3λ × 2λ. If the aperture efficiency of an antenna is 90%, then the directivity of the antenna is:
A radio link has 15 W transmitter connected to an antenna of 2.5 m2 effective aperture at 5 GHz. The receiving antenna has an effective aperture of 0.5 m2 and is located at a 15 Km line of sight distance from transmitting antenna. Assuming lossless, matched antennas, the power delivered to the receiver is:
If physical aperture of antenna is 0.02m2 and aperture efficiency is 0.5, then what is the value of effective aperture?
If the aperture antenna is tapered only in H-plane then which of the following is true compared to uniform non-tapered aperture antenna?
Effective aperture is a parameter of the antenna that gives the physical aperture of the antenna.
What is the physical area of the rectangular horn antenna with E-plane aperture 5 λ and H-plane aperture 4 λ?
Which of the following condition holds good for minimum total aperture blocking in Cassegrain?
Which of the following is used to avoid the aperture blockage due to secondary reflector?
An antenna in free space receives 4 μW of power when the incident electric field is 10 mV/m rms. The effective aperture of the antenna is:
A rectangular horn antenna has an aperture area of 3λ × 2λ. Then the maximum directivity that can be achieved by this rectangular horn antenna is: