Design of X-Ku Band Wilkinson Power Divider Using Synthetic Quasi-TEM Transmission Line

This work presents a miniaturized X-Ku band Wilkinson power divider (WPD), based on 0.18μm 1P6M CMOS foundry technology. The proposed two-dimensional transmission line, called a complementary-conducting-strip (CCS), replaces the conventional microstrip (MS) line structure. With this CCS structure, the occupying area of this novel divider is about 96 % smaller than that of the conventional MS WPD. The prototype occupies an area of only 345 μm by 360 μm without input/output (I/O) pads. The new WPD has an insertion loss of 4.9 dB, an isolation of 13 dB and a return loss 12 dB between 8 GHz and 18 GHz.