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Bessel filter

About: Bessel filter is a research topic. Over the lifetime, 656 publications have been published within this topic receiving 16808 citations.


Papers
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Proceedings ArticleDOI
01 May 1995
TL;DR: In this article, a 7th-order continuous-time Bessel filter using a new lowvoltage and highly-linear BiCMOS OTA is presented, which can be frequency tuned with an external resistor over almost a decade with a gain variation less than 0.2 dB.
Abstract: This paper presents the design of a 7th-order continuous-time Bessel filter using a new low-voltage and highly-linear BiCMOS OTA. A high-gain and parasitic-insensitive integrator is obtained by using an active capacitor scheme. The filter has been fabricated in a 1 /spl mu/m, double-poly 6-GHz BiCMOS process. The filter is operated at 2.5 V supply and has a nominal -3 dB cut-off frequency set at 600 kHz. The inband group delay variation is less than 10 ns. The THD measured with a 100 kHz input signal is less than -49 dB for a 2 V/sub pp/ amplitude. The filter can be frequency tuned with an external resistor over almost a decade with a gain variation less than 0.2 dB. The dynamic range is about 77 dB. A CMRR of 53 dB in the passband is observed, thanks to a careful common-mode control strategy.

6 citations

Journal ArticleDOI
TL;DR: In this paper, the design of an approximated fractional-order low-pass Bessel filter using various optimisation techniques using simulated annealing (SA), nonlinear least square (NLS), and firefly was proposed.
Abstract: This paper proposes the design of an approximated fractional-order low-pass Bessel filter using various optimisation techniques. Simulated annealing (SA), nonlinear least square (NLS), and firefly ...

6 citations

Book ChapterDOI
TL;DR: In this paper, a full quantitative description of high-order harmonic generation (HHG) in a macroscopic medium requires the inclusion of the propagation of fundamental laser field and generated harmonic field.
Abstract: As discussed in Chap. 3, a full quantitative description of high-order harmonic generation (HHG) in a macroscopic medium requires the inclusion of the propagation of fundamental laser field and generated harmonic field. The QRS theory has been successfully incorporated into the well-established macroscopic propagation theory such that simulated HHG spectra can be compared directly with the experimental measurements in Fig. 3.3, where the experimental conditions have been well specified. High harmonics in these studies were generated with multi-cycle (FWHM, \(\sim \)10 optical cycles) laser pulses. And these simulations were based on the assumption that the initial fundamental laser pulse at the entrance of gas medium was a Gaussian beam. Few-cycle laser pulses are also widely used to produce high harmonics, and they are usually obtained by gas-filled hollow-core fiber compression technique [1]. In this method, an incident laser beam can be dominantly coupled into the fundamental EH\(_{11}\) hybrid mode by proper mode matching. At the exit of the fiber a truncated Bessel (TB) beam is produced instead of a Gaussian beam. Nisoli et al. [2] have shown that using a TB beam as the driving laser pulse the spatial properties (divergence and brightness) of high harmonics were greatly improved. To simulate high harmonics generated by few-cycle pulses, the macroscopic propagation code is generalized to include the conditions where the spatial distribution of generating laser pulse is a TB beam.

6 citations

Journal ArticleDOI
TL;DR: The q-analogues of modified Bessel functions and Macdonald functions were defined in the previous paper of the authors as general solutions of certain second-order difference equations and several representations of these functions based on the Jackson integral are presented as discussed by the authors.
Abstract: The q-analogues of modified Bessel functions and Macdonald functions were defined in the previous paper of the authors as general solutions of certain second-order difference equations. Several representations of these functions based on the Jackson integral are presented.

6 citations

Proceedings ArticleDOI
J. Egerer1, T. Desel, Popken, J. Boxho, D. Macq, J.-P. Cornil 
13 Sep 1998
TL;DR: In this paper, a low distortion 5/sup th/order R-MOSFET-C Bessel filter was designed in a 0.5 /spl mu/m, 3.3 V CMOS technology.
Abstract: For an HDSL analog front end, a low distortion 5/sup th/ order R-MOSFET-C Bessel filter was designed in a 0.5 /spl mu/m, 3.3 V CMOS technology. The filter is linearly tunable around cutoff frequencies of 488 kHz and 335 kHz by an on-chip tuning circuit. The fabricated prototypes show linear tuning and a THD<-75 dB for a 100 kHz signal.

6 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20231
20225
20216
20207
201911
201817