An Active Recursive RF Filter in 0.35 µm BiCMOS

Stefan Andersson
Electronic Devices, Dept. of Electrical Engineering, Linköpings universitet, Swede

Christer Svensson
Electronic Devices, Dept. of Electrical Engineering, Linköpings universitet, Swede

Ladda ner artikelhttp://www.ep.liu.se/ecp_article/index.en.aspx?issue=008;article=053

Ingår i: GigaHertz 2003. Proceedings from the Seventh Symposium

Linköping Electronic Conference Proceedings 8:53, s.

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Publicerad: 2003-11-06


ISSN: 1650-3686 (tryckt), 1650-3740 (online)


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 µm 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 from6 GHz to 9.4 GHz and a noise figure of 8.8-10.4 dB depending on center frequency. Gain and Q-value are tunable in a wide range. Simulated IIP-3 and 1-dB compression point is -26 dBm and -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 GHz to 10 GHz; i.e. slightly higher center frequencies were measured than the simulated.


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