Topic
Butterworth filter
About: Butterworth filter is a research topic. Over the lifetime, 6187 publications have been published within this topic receiving 69070 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: A novel circuit for realizing voltage-mode first-order and second- order all-pass filter responses as well as second-order notch filter response depending on the passive component choice, is presented.
Abstract: In this paper, a novel circuit for realizing voltage-mode first-order and second-order all-pass filter responses as well as second-order notch filter response depending on the passive component choice, is presented. This circuit has high input impedance; thus, it is easy to cascade the introduced filter with other voltage-mode topologies. Also, it uses a single Variable Gain Current Conveyer — VGCCII and only grounded capacitors. SPICE simulation results based on 0.35 μm TSMC CMOS technology parameters are given to confirm the theory.
20 citations
Patent•
14 Nov 2002TL;DR: In this paper, a complex low-pass filter that reduces the influence of component mismatch is proposed, which includes a first filter section for effecting a first single pole transfer function and a second filter section to effect a second single transfer function, where the first and the second single poles define a conjugate pair of poles.
Abstract: A complex low-pass filter that reduces the influence of component mismatch. The filter includes a first filter section for effecting a first single pole transfer function and a second filter section for effecting a second single pole transfer function, where the first and the second single pole transfer functions collectively define a conjugate pair of poles. In higher order low-pass filters, an optimal cascade order follows a shoestring pattern.
20 citations
TL;DR: In this paper, the design and measured results of a prototype high-frequency fifth order switched-current bilinear elliptic low-pass filter were presented, which was implemented on a standard 1.2 /spl mu/m double-metal single-polysilicon CMOS process.
Abstract: Design considerations for and measured results of a prototype high-frequency fifth order switched-current bilinear elliptic lowpass filter are presented in this paper. The prototype filter was implemented on a standard 1.2 /spl mu/m double-metal single-polysilicon CMOS process and occupied a total die area of 1.5 mm/sup 2/. When clocked at 2 MHz, the filter achieved a passband edge of 350 kHz, a stopband edge of 420 kHz, a passband ripple of 0.6 dB and a minimum stopband attenuation of 26 dB. With a single 5 V power supply the filter consumed 28 mW. >
20 citations
14 Dec 2003
TL;DR: A fully reconfigurable channel select filter is presented which is used as a part of a multi mode direct conversion receiver which supports different modes including GSM, IS-95, and UMTS.
Abstract: A fully reconfigurable channel select filter is presented which is used as a part of a multi mode direct conversion receiver. The filter supports different modes including GSM, IS-95, and UMTS. A 4/sup th/ order Butterworth filter is realized in a g/sub n/ C filter topology. The filter circuit is implemented in a standard 0.35 /spl mu/m CMOS process. The filter is able to handle large input signals up to 600mVpp at a supply voltage of 2.7V. The circuit has a low current consumption of 620/spl mu/A, whereas the needed die size is only 530520/spl mu/m.
20 citations
25 May 2003
TL;DR: A low-voltage/low power second order filter that consists of 6 pseudo floating-gate transistors operated in weak inversion is presented, suitable for any kind of application requiring low frequency ranges, such as biomedical products.
Abstract: We present a low-voltage/low power second order filter. The filter consists of 6 pseudo floating-gate transistors operated in weak inversion. The filter is suitable for any kind of application requiring low frequency ranges, such as biomedical products. An electronic cochlea consisting of replicas of the filter is presented. The filter operates at a supply voltage below 1 V, consumes power down to 5 nW, and has a harmonic distortion suppression of -60 dB.
20 citations