Abstract
An improved millimetre wave microstrip power divider is presented. This circuit enhanced the conventional Wilkinson power divider (WPD) performance by adding transmission lines between the transformer arms and the resistor to reduce inherent undesirable mutual coupling. The proposed power divider design parameters show more stability over a wider frequency band compared to other valid design solutions. For comparison purposes, the proposed power divider along with the WPD are designed at 61 GHz using high permittivity thin ceramic substrate. The measurement results of the proposed circuit demonstrate improved bandwidth with high input/output matching and isolation of −15 and −24 dB, respectively, in the whole frequency band of 10 GHz. Furthermore, the excess insertion loss is reduced by 20% compared to the conventional one.
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