A miniaturized and self-packaged Gysel power divider with embedded metamaterials in SISL platform

Abstract

This paper presents a self-packaged Gysel power divider (PD) with embedded metamaterials in substrate integrated suspended Line (SISL) platform. Metamaterials are formed by a periodic arrangement of I-shaped electrical resonators that can produce high dielectric constants and are encapsulated in the multi-layer SISL structure to reduce the circuit size. Fabricated by using a standard printed circuit board (PCB) process, the proposed Gysel PD is self-packaged. The structure of the meandering line introduced in the layout of PD can be downsized. The designed PD with embedded metamaterials operates from 3.3 to 3.6 GHz with a bandwidth of 14.8% for S₁₁ < -20 dB. Compared with the case where metamaterials are not embedded, the circuit area is reduced by about 61%.