Abstract

An efiective method is introduced to overcome the narrow strip width in unequal Wilkinson power divider with high dividing ratio. In the proposed method, the separated microstrip lines of the Wilkinson power divider are replaced by a uniform asymmetrical microstrip coupled lines. It is shown that in the proposed method, the width of the narrow microstrip line is signiflcantly wider in comparison to the narrow microstrip line in the conventional Wilkinson power divider with the same speciflcation. To design the power divider, a suitable error function is deflned and then minimized which led to the flnal dimensions of the power divider. A sample of the designed power divider with 4 : 1 dividing ratio is fabricated and tested, which indicate the efiectiveness of the proposed method.

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