Show simple item record

dc.contributor.authorSun, Y.
dc.contributor.authorZhu, X.
dc.contributor.authorMoritz, J.
dc.identifier.citationSun , Y , Zhu , X & Moritz , J 2010 , ' Explicit design formulas for current-mode leap-frog OTA-C filters and 300 MHz CMOS seventh-order linear phase filter ' , International Journal of Circuit Theory and Applications , vol. 38 , no. 4 , pp. 367-382 .
dc.identifier.otherPURE: 111172
dc.identifier.otherPURE UUID: ee5cff87-96d1-43e3-93b7-cddc6694421c
dc.identifier.otherdspace: 2299/4471
dc.identifier.otherScopus: 77951605064
dc.descriptionThe defnitive article can be found at: Copyright Wiley. [Full text of this article is not available in the UHRA]
dc.description.abstractThe leap-frog (LF) configuration is an important structure in analogue filter design. Voltage-mode LF OTA-C filters have recently been studied in the literature; however, general explicit formulas do not exist for current-mode LF OTA-C filters and there is also need for current-mode LF-based OTA-C structures for realization of arbitrary transmission zeros. Three current-mode OTA-C structures are presented, including the basic LF structure and LF filters with an input distributor or an output summer. They can realize all-pole characteristics and functions with arbitrary transmission zeros. Explicit design formulas are derived directly from these structures for the synthesis of, respectively, all-pole and arbitrary zero filter characteristics of up to the sixth order. The filter structures are regular and the design formulas are straightforward to use. As an illustrative example, a 300 MHz seventh-order linear phase low-pass filter with zeros is presented. The filter is implemented using a fully differential linear operational transconductance amplifier (OTA) based on a source degeneration topology. Simulations in a standard TSMC 0.18µm CMOS process with 2.5 V power supply have shown that the cutoff frequency of the filter ranges from 260 to 320 MHz, group delay ripple is about 4.5% over the whole tuning range, noise of the filter is 420nA/Hz, dynamic range is 66 dB and power consumption is 200 mW.en
dc.relation.ispartofInternational Journal of Circuit Theory and Applications
dc.titleExplicit design formulas for current-mode leap-frog OTA-C filters and 300 MHz CMOS seventh-order linear phase filteren
dc.contributor.institutionSchool of Engineering and Technology
dc.contributor.institutionScience & Technology Research Institute
dc.description.statusPeer reviewed
rioxxterms.typeJournal Article/Review

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record