Lourandakis E, Schmidt M, Seitz S, Weigel R (2008)
Publication Type: Conference contribution
Publication year: 2008
Pages Range: 1691-1694
Conference Proceedings Title: European Microwave Conference
Event location: Amsterdam, The Netherlands
ISBN: 978-2-87487-006-4
Tunable lumped element filter topologies are discussed based on ferroelectric thin-film varactors. The design methodology for the proposed filter topologies relies on already known techniques and is enhanced with the tuning functionality by introducing the Barium-Strontium-Titanate (BST) varactors. Prototype circuits of a lowpass and a bandstop filter were fabricated and the measurement results showed good agreement to the corresponding calculated data. The lowpass prototype achieves a continuous tuning range from 1.5 GHz to 1.9 GHz. The highest measured passband insertion loss is about 4 dB and the input matching is better than -15dB for all bias states. The implemented bandstop filter allows a continuous tuning of the notch frequency from 1.5 GHz to 2.1 GHz with a minimum attenuation of 17 dB.
APA:
Lourandakis, E., Schmidt, M., Seitz, S., & Weigel, R. (2008). Tunable Lumped Element Filters With BST Thin-Film Varactors. In European Microwave Conference (pp. 1691-1694). Amsterdam, The Netherlands.
MLA:
Lourandakis, Errikos, et al. "Tunable Lumped Element Filters With BST Thin-Film Varactors." Proceedings of the European Microwave Conference, Amsterdam, The Netherlands 2008. 1691-1694.
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