Realization of an Integrated Planar LC Low-Pass Filter with Modified Surface Micromachining Technology

An Integrated Planar LC LPF(Low-Pass Filter) is designed and fabricated with Modified Surface Micromachining. The LPF is accomplished on low-resistance silicon substrate. To increase the performance of the filter, the substrate underneath the devices is modified with OPS (oxided porous silicon) technology. Measurement results give -3dB bandwidth of 2.925GHz and midband insertion loss of 0.874dB at 500MHz.