![]() This vertical polarized field when passes through the last component of rectangular waveguide, it does not interact with the resistive card since card is horizontally placed.Ĭase2) When a vertically polarized wave is reflected from the second port, it travels with same orientation of the field till the ferrite rod. Due to anticlockwise and clockwise rotation of 450 the overall rotation in polarization is nullified and the field becomes vertical as it was at the input. This field now passed through the Ferrite material and the field polarization now is rotated in clockwise direction by 450. When the wave passes through mechanical twist (bend) the field polarization rotates by 450 in anticlockwise direction. It is nonreciprocal device, iv) rectangular waveguide with resistive card.Ĭase1) A TE10 mode is applied to the rectangular waveguide so the field is oriented in vertical direction as shown in figure. It is reciprocal device iii) circular waveguide with ferrite rod to give a polarization rotation of 450 in clockwise direction. Isolator comprises of four components i) rectangular waveguide with planar resistive card, ii)Mechanical bend of 450 in anticlockwise direction. This plane of polarization changes in the same direction whatever may be the direction of propagation of wave. ![]() ![]() When an electromagnetic wave passes through ferrites, plane of polarization continuous to rotate to angle θ in one particular direction (either clockwise or anticlockwise). ![]()
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