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Autor(en): Briem, Jochen
Mader, Marco
Reiter, Daniel
Amirpour, Raul
Grözing, Markus
Berroth, Manfred
Titel: Fully integrated high quality factor GmC bandpass filter stage with highly linear operational transconductance amplifier
Erscheinungsdatum: 2017
Dokumentart: Zeitschriftenartikel
Seiten: 149-155
Erschienen in: Advances in radio science 15 (2017), S. 149-155
URI: http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-95568
http://elib.uni-stuttgart.de/handle/11682/9556
http://dx.doi.org/10.18419/opus-9539
ISSN: 1684-9973
1684-9965
Zusammenfassung: This paper presents an electrical, fully integrated, high quality (Q) factor GmC bandpass filter (BPF) stage for a wireless 27 MHz direct conversion receiver for a bendable sensor system-in-foil (Briem, 2016). The core of 10 the BPF with a Q factor of more than 200 is an operational transconductance amplifier (OTA) with a high linearity at an input range of up to 300 mVpp,diff. The OTA’s signal-to-noise-and-distortion-ratio (SNDR) of more than 80 dB in the mentioned range is achieved by stabilizing its transconductance Gm with a respective feedback loop and a source degeneration resistance RDG. The filter stage can be tuned and is tolerant to global and local process variations due to offset and common-mode 15 feedback (CMFB) control circuits. The results are determined by periodic steady state (PSS) simulations at more than 200 global and local process variation parameter and temperature points and corner simulations. It is expected, that the parasitic elements of the layout have no significant influence on the filter behaviour. The current consumption of the whole filter stage is less than 600 μA.
Enthalten in den Sammlungen:05 Fakultät Informatik, Elektrotechnik und Informationstechnik

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