A novel miniaturization Wilkinson power divider using complementary spiral resonators (CSRs)

In this article, a novel miniaturized power divider operating at 0.9GHz is presented. By replacing the 90° branch line of conventional Wilkinson power divider with the novel 90° composite right/left handed (CRLH) lines realized by complementary spiral resonators (CSRs), the occupied effective area of our proposed power divider can be reduced by about 70% from that of the conventional one. The performances are demonstrated by simulated and measured results, which are in good agreement.