Design and EM Analysis of Dual Band Hilbert Curve Based Wilkinson Power Divider

Abstract

In this paper, two configurations (T-type and Y-type) of dual band Wilkinson Power Divider based upon Hilbert curves are presented. Formerly, the concept of Hilbert Curves was implemented in only designing microstrip antennas. In power dividers, this is the very first attempt of incorporating them for size reduction. In addition to this, an effect of inculcation of high-dielectric constant layer (Hafnium-oxide, HfO 2 , ε r = 25) between a substrate and top metallization in both configurations was investigated. The proposed configurations are designed on a high resistive silicon substrate (HRS) for L and S bands with resonating frequencies of 1.575 and 3.4 GHz. Both configurations have return loss that is better than 20 dB and an insertion loss of around 6 dB; isolation better than 30 dB was achieved for both models.

Recent Trends and Challenges in Microwave Power Divider

“…All these efforts enhanced spectrum accessibility of the WPD but the increased integration complexity and circuitry occupation were major disadvantages. To overcome this problem of increased divider size and complexity, simple 4-way WPD with meandering technique was proposed which introduced two new configurations of 1:4Wilkinson Power Divider [11]. These size issues and circuit complexity is the major concern for the modern-day miniaturized wireless systems employing equal power dividers and thus, more research and effort is needed in this regard.…”