Topic
Bessel filter
About: Bessel filter is a research topic. Over the lifetime, 656 publications have been published within this topic receiving 16808 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, a method for integral transformation of highly oscillatory functions, Bessel functions, is presented based on the Filon-type method and the decay of the error can be increased as α increases.
8 citations
Journal Article•
TL;DR: In this article, a low-pass to high-pass crossover is constructed from a Bessel lowpass filter employing the standard lowpass-to-high-pass transformation, which is compared to the Butterworth and Linkwitz-Riley types in terms of the magnitude, phase, and time domain responses.
Abstract: One of the ways that a crossover may be constructed from a Bessel low-pass filter employs the standard low-pass to high-pass transformation. Various frequency normalizations can be chosen for best magnitude and polar response, although the linear phase approximation in the passband of the low-pass is not maintained at higher frequencies. The resulting crossover is compared to the Butterworth and Linkwitz-Riley types in terms of the magnitude, phase, and time domain responses.
8 citations
Proceedings Article•
01 Jan 2002
7 citations
7 citations
12 Dec 2013
TL;DR: A novel circuit architecture for implementing the Bessel low-pass filter with an ultra-low corner frequency and negligible interferences from the ground is presented, based on the transconductance-capacitor (Gm-C) architecture.
Abstract: Active filters with a very low corner frequency (of only a few hertz or below) are usually demanded at the frontend circuitry of biomedical instruments. This paper presents a novel circuit architecture for implementing the Bessel low-pass filter with an ultra-low corner frequency and negligible interferences from the ground. Basing on the transconductance-capacitor (Gm-C) architecture, the proposed filter incorporates a differential amplifier into the negative feedback loop to scale down the corner frequency, as well as to eliminate noise coupling from the ground. To demonstrate the design concept, a second-order Bessel filter is fabricated with the 0.35μm CMOS technology. With a corner frequency of around 1Hz, the filter consumes only 1.2μW and a chip area of 0.089mm2. Moreover, the 60-Hz interference from the ground is proved to be attenuated by more than 36dB.
7 citations