Journal ArticleDOI
A 500-stage CCD transversal filter for spectral analysis
TLDR
The operation and design of 500-stage charge-coupled device (CCD) transversal filters are described and indicate that sample rates from 25 Hz to 10 MHz are possible with a dynamic range approaching 100 dB while retaining high linearity.Abstract:
The operation and design of 500-stage charge-coupled device (CCD) transversal filters are described. The filters have been mask programmed for implementing two spectral analysis techniques: 1) bandpass filtering and 2) Fourier analysis using the chirp z transform (CZT) algorithm. The bandpass filter has a measured fractional 3 dB bandwidth of 0.0108 and 38 dB sidelobe rejection. The dynamic range is 75 dB with less than 45 dB total harmonic distortion. A sliding transform is defined which is useful for calculations of the power spectral density and is shown to be particularly advantageous in a CCD-CZT implementation. Using the sliding transform, a 500-point spectrum is calculated using CCD's with resolutions which can be varied from 1-200 Hz. The dynamic range of the power spectral output was measured to be 80 dB. A discussion is given of the performance limitation of a general CCD filter due to the inherent characteristics of the device. The results are evaluated for the 500-stage devices described above and indicate that sample rates from 25 Hz to 10 MHz are possible with a dynamic range approaching 100 dB while retaining high linearity.read more
Citations
More filters
Journal ArticleDOI
MOS sampled data recursive filters using switched capacitor integrators
TL;DR: A new technique to analog sampled data filtering is presented which can be fully integrated using MOS technology, and advantages of this new approach are reduced circuit complexity, low sensitivity to coefficient variations, and efficient utilization of silicon area.
Journal ArticleDOI
Potential of MOS technologies for analog integrated circuits
TL;DR: In this article, the authors review the rapid progress in MOS analog circuit techniques over the past three years, and attempt to estimate the near-term attainable characteristics of MOS LSI circuits which incorporate both analog and digital functions.
Proceedings Article
Potential of MOS Technologies for Analog Integrated Circuits
TL;DR: In this paper, large-scale integrated circuits for many analog and combined analog-digital circuit functions are becoming feasible in N-channel and complementary metal-oxide-semiconductor technologies.
Journal ArticleDOI
An approach to programmable CTD filters using coefficients 0, + 1, and -1
M. Bateman,B. Liu +1 more
TL;DR: In this article, a delta modulation-like sampled analog filter structure for realizing low-pass filters is described, which uses only the coefficients 0, + 1, and -1 and can be fabricated as a programmable CCD filter.
Journal ArticleDOI
A switched-capacitor realization of multiple FIR filters on a single chip
Y.-S. Lee,Kenneth W. Martin +1 more
TL;DR: In this article, the design techniques for realizing eight 32-tap transversal filters on a single-CMOS IC are discussed, which is capable of processing signals at a rate of 500 million multiplications and accumulations per second, while achieving a high dynamic range.
References
More filters
Book
Theory and application of digital signal processing
TL;DR: Feyman and Wing as discussed by the authors introduced the simplicity of the invariant imbedding method to tackle various problems of interest to engineers, physicists, applied mathematicians, and numerical analysts.
Journal ArticleDOI
The chirp z-transform algorithm
TL;DR: A computational algorithm for numerically evaluating the z -transform of a sequence of N samples is discussed, based on the fact that the values of the z-transform on a circular or spiral contour can be expressed as a discrete convolution.
Journal ArticleDOI
The chirp z-transform algorithm and its application
TL;DR: Applications discussed include: enhancement of poles in spectral analysis, high resolution narrow-band frequency analysis, interpolation of band-limited waveforms, and the conversion of a base 2 fast Fourier transform program into an arbitrary radix fast Fouriers transform program.
Journal ArticleDOI
Transversal filtering using charge-transfer devices
TL;DR: Techniques are presented for making transversal filters using charge-coupled devices and bucket-brigade devices, and examples are given of CCD and BBD filters that are `matched' to particular signalling waveforms.
Patent
Buried channel charge coupled devices
TL;DR: In this article, the authors describe charge coupled devices in which the storage layer is internally charged so that the energy level profile across the thickness of the layer has a maxima in the middle of layer.