Compact Size On-Chip 60 GHz H-Shaped Resonator BPF

Abstract

In this letter, we propose a compact size, small insertion loss 60 GHz on-chip H-shaped resonator bandpass filter (BPF) using 0.18 $\mu\text{m}$ standard CMOS technology. The BPF Size is miniaturized by loading the H-shaped resonator with metal-insulator-metal capacitors at its ends. Besides, two defected ground structure cells are etched under the coupled lines to improve the filter insertion loss. Furthermore, selectivity is enhanced by loading the center of the H-shaped resonator with two unsymmetrical meander line stubs generating two transmission zeroes at 50 and 70 GHz. The fabricated BPF chip size is $240 \times 650 \mu\text{m}^{2}$ . The measured insertion loss and fractional bandwidth are 2.5 dB at 60 GHz and 21%, respectively.