Question

Which among the following is not an example for electromagnetic sensors?

a.

Antenna

b.

CCD sensors

c.

RF sensors

d.

Anisotropic magneto resistance sensors

Posted under Cognitive Radio

Answer: (b).CCD sensors Explanation:Electromagnetic sensors are used to convert electromagnetic signals into electrical signals. Antenna is the most commonly used radio sensing sensor. Location information is obtained from received signal statistics such as time of arrival in antenna based wireless positioning system.

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Q. Which among the following is not an example for electromagnetic sensors?

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