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1 GHz opamp-based bandpass filter

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4 Author(s)
Ng, G. ; Edward S. Rogers Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada ; Lai, B. ; Liu, P. ; Voinigescu, S.P.

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 and common-mode-feedback. The filter has tunable bandwidth and tunable center frequency and marks a radical approach to the design a bandpass filter operating in the gigahertz range.

Published in:

Silicon Monolithic Integrated Circuits in RF Systems, 2006. Digest of Papers. 2006 Topical Meeting on

Date of Conference:

18-20 Jan. 2006