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When the polarisation of the receiving antenna is unknown, to ensure that it receives atleast half the power, the transmitted wave should be

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in Electromagnetic Theory by (188k points)
When the polarisation of the receiving antenna is unknown, to ensure that it receives atleast half the power, the transmitted wave should be

(a) Linearly polarised

(b) Elliptically polarised

(c) Circularly polarised

(d) Normally polarised

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This is a very interesting question from Types of Polarization topic in division EM Wave Propagation of Electromagnetic Theory

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Correct option is (c) Circularly polarised

The explanation is: The polarisation of the transmitting and receiving antenna has to be the same. This is the condition for maximum power transfer to occur. This is possible only when the polarisation is circular.

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