In this paper, the authors present on-chip open loop resonators 60GHz bandpass filters fabricated with the Complementary Metal-Oxide Semiconductor (CMOS) 0.18um technology. Both filters have different ground shield placed at the lowest metal, M1. The first filter is designed with patterned ground shield below while the other filter with Complementary Split Ring Resonators (CSRRs) as ground shield. This paper is to examine the best ground shield that can be used and employed to enhance the performance of the filter. Design simulation is conducted with electromagnetic simulator tools.