A Slow Wave Power Divider Based on the HISL Platform

This paper proposes a slow-wave structure based on inductive-loading and applies it to the design of a miniaturized power divider. By adopting the capacitance and inductive loading technology, the slow-wave transmission line has a large slow-wave coefficient. The proposed slow-wave transmission line is based on the hybrid integrated suspended line (HISL) platform. The overall structure is a multi-layer structure. The core layer slow-wave structure is based on double-sided PCB circuit processing, and the remaining four layers are metal boards. The overall structure has good mechanical strength and the advantage of self-packaging based on multi-layer. The designed slow-wave power divider has a central operating frequency of 0.7 GHz and a circuit area of 13.49 mm×12.06 mm, that is, 0.036 λg×0.033 λg, where λg is the guided wavelength at the center frequency.