A plane wave is characterised by this wave is

A plane wave is characterised by this wave is—

→ ^ ^
E = (0.5 x + x E^jπ/2) e^{jωt– jk2}

1. Linearly polarized
2. Circularly polarized
3. Elliptically polarized
4. Unpolarized

Wave polarization may be found as

φ = tan^–1		E_y		= tan^–1	e^{jπ/2· ejωt – ^jkz}
		E_x			0.5 · e^{jωt – jkz}

= tan^–1		j sin π/2		= tan^–1		j		= tan^–1(2j)
		0.5				.5

φ = multiple of π/2 so it is circularly polarized.

→		^	^
E =	(0.5	x +	x	E^jπ/2)	e^{jωt– jk2}