MCQOPTIONS
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| 1. |
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. | 19 dB |
| B. | 17.1 dB |
| C. | 13 dB |
| D. | 21.1 dB |
| Answer» C. 13 dB | |