Technique to eliminate slow-settling components that appear due to dipoles [multipath compensated amplifiers]

Schlarmann, M.E.; Geiger, R.L.

doi:10.1109/mwscas.2001.986118

Cited by 3 publications

(7 citation statements)

References 4 publications

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“…The dynamics of the elliptic filter may be improved when the settling time of the functions given in (12)- (14) will equal the settling time of the original time-invariant filter , i.e., (25) where is a constant which defines the maximum permissible error for the settling-time measurement. For an error of 2%, .…”

Section: E Functions Restrictionsmentioning

confidence: 99%

“…The settling time of can be derived from the following relation: (26) Substituting (12) and (18) into the left side of this relation, we have (27) The settling time for function can be determined from this equation and is given by (28) From this last relation, it is possible to calculate the exponential variation rate of the functions , , and . Using (25) and (28), the exponential variation rate can be written as (29) If and are known, may be readily determined. In order to preserve the stability of the system, the value of must be selected such that the condition given in (23) holds.…”

Section: E Functions Restrictionsmentioning

confidence: 99%

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A New Class of Continuous-Time Delay-Compensated Parameter-Varying Low-Pass Elliptic Filters With Improved Dynamic Behavior

Piskorowski¹,

Anda

2009

IEEE Trans. Circuits Syst. I

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In some applications, it is required to have continuous-time low-pass analog filtering systems which simultaneously possess a constant group delay in the passband and a narrow transition band. Usually, these systems are implemented by adding to the output of a filter with steep-amplitude selectivity (an elliptic filter, for instance) an all-pass filter which compensates the unfavorable run of the group delay response of the first filter. However, this compensation process will also increase the duration of the transient response of the resulting filtering system. This paper presents a new class of delay-compensated parameter-varying lowpass elliptic filters with a transient response of short duration. This improvement is achieved by means of a temporary change in the value of the filter parameters when a steplike transition with a minimum amplitude is detected in the input signal. As a consequence of the control strategy used to induce parameter variations in the proposed class of filters, its behavior is nonlinear in nature. Therefore, its stability properties (and particularly their bounded-input bounded-output stability) are also assessed. Simulations verifying the effectiveness of the new class of filters are presented and compared to the performance of delay-compensated and delay-uncompensated elliptic filters which were chosen as study cases.

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Section: E Functions Restrictionsmentioning

confidence: 99%

Section: E Functions Restrictionsmentioning

confidence: 99%

A New Class of Continuous-Time Delay-Compensated Parameter-Varying Low-Pass Elliptic Filters With Improved Dynamic Behavior

Piskorowski¹,

Anda

2009

IEEE Trans. Circuits Syst. I

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“…Operational amplifiers used in switched-capacitor circuits are the best example of these systems. There are several techniques proposed in the literature for the design of these circuit blocks which take in account the adjustment of the settling time within a given boundary (see, for instance, [2][3][4][5]). …”

Section: Introductionmentioning

confidence: 99%

Analytical Synthesis of Parameter-Varying Filter of Constant Component with Application to Switching Systems

Piskorowski¹,

Kaszyński²

2011

Metrology and Measurement Systems

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In this paper, we propose a concept of a continuous-time filter of constant component that exhibits a very short response in the time domain if compared to the traditional time-invariant filter. The improvement of the filter dynamics was achieved as a result of the time-varying parameters which were introduced to the filter structure. Such a designed filter is then applied in a system which switches many distorted signals which should be filtered as fast as possible. The paper is of review nature and presents both a theoretical background of the proposed filter and the results of simulations.

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“…In an effort to overcome these limitations and extend the applicability of multistage multipath compensated amplifiers to the high-speed realm, a calibration technique to eliminate the dipole mismatch of a two-stage structure was proposed [32]. The viability of the technique was demonstrated in a 0.25 |i CMOS process.…”

Section: Introductionmentioning

confidence: 99%

“…The applicability of the method proposed in [32] is limited to amplifiers with two gain stages and one low-frequency dipole. In this paper we present a generalization of the technique to cover amplifiers composed of an arbitrary number of stages.…”

Section: Introductionmentioning

confidence: 99%

Multipath feedforward compensated amplifier, related dipole (doublet) compression technique, and other topics

Schlarmann

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The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleed-through, substandard margins, and improper alignment can adversely affect reproduction. In the unlikely event that the author did not send a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion.

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Technique to eliminate slow-settling components that appear due to dipoles [multipath compensated amplifiers]

Cited by 3 publications

References 4 publications

A New Class of Continuous-Time Delay-Compensated Parameter-Varying Low-Pass Elliptic Filters With Improved Dynamic Behavior

A New Class of Continuous-Time Delay-Compensated Parameter-Varying Low-Pass Elliptic Filters With Improved Dynamic Behavior

Analytical Synthesis of Parameter-Varying Filter of Constant Component with Application to Switching Systems

Multipath feedforward compensated amplifier, related dipole (doublet) compression technique, and other topics

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