opamp-based bandpass filter

1 GHz opamp-based bandpass filter

FREE-DOWNLOAD G Ng, B Lai, P Liu… – … Integrated Circuits in RF …, 2006
Abstract — A biquad bandpass filter, operating at 1 GHz with 9 dB gain, was designed and fabricated
in 180nm SiGe BiCMOS technology. It relies on a 11-GHz unity-gain- bandwidth, highly stable
opamp implemented using a MOS- HBT cascode stage with cascode p-MOSFET load