An Active Recursive RF Filter in 0.35 µm BiCMOS

Authors:
Stefan Andersson;Christer Svensson
Affiliations:
Electronic Devices, Department of Electrical Engineering, Linköping University, Linköping, Sweden SE-58183;Electronic Devices, Department of Electrical Engineering, Linköping University, Linköping, Sweden SE-58183
Venue:
Analog Integrated Circuits and Signal Processing
Year:
2005

Citing 2
Cited 1

Microelectronic circuits, 2nd ed.

Microelectronic circuits, 2nd ed.
Design of Analog CMOS Integrated Circuits

Design of Analog CMOS Integrated Circuits

A 5.4-GHz high-Q tunable active-inductor bandpass filter in standard digital CMOS technology

Analog Integrated Circuits and Signal Processing

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Abstract

An active recursive filter approach is proposed for the implementaion of an inductorless, tuneable RF filter in BiCMOS. A test circuit was designed and manufactured in a 0.35 驴m SiGe BiCMOS technology. In simulations, the feasibility of this type of filter was demonstrated and reasonably good performance was obtained. The simulations show a center frequency tuning range from 6 to 9.4 GHz and a noise figure of 8.8 to 10.4 dB depending on center frequency. Gain and Q-value are tunable in a wide range. Simulated IIP-3 and 1-dB compression point is 驴26 and 驴34 dBm respectively, simulated at the center frequency 8.5 GHz and with 15 dB gain. Measurements on the fabricated device shows a center frequency tuning range from 6.6 to 10 GHz, i.e. slightly higher center frequencies were measured than the simulated.