Low Q equiripple functions of nonminimum order

Rabrenovic, D.M.; Lutovac, Miroslav D.

doi:10.1049/el:19900290

Cited by 6 publications

(2 citation statements)

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“…In this way the filter can be designed with the required GSP. Although a filter which obeys (5) is not necessarily canonical, the canonical version of the circuit will always have a GSP worse than that of the original circuit. This because the canonical circuit then does not obey (5) and, implicitly, the Fialkow-Gerst conditions.…”

Section: "L+l + a A + L (3)mentioning

confidence: 99%

“…Although a filter which obeys (5) is not necessarily canonical, the canonical version of the circuit will always have a GSP worse than that of the original circuit. This because the canonical circuit then does not obey (5) and, implicitly, the Fialkow-Gerst conditions. In this contribution we will derive the general conditions for the coefficients instead of those for the lower bound of b, only.…”

Section: "L+l + a A + L (3)mentioning

confidence: 99%

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On the restrictions of the sensitivities in single‐amplifier biquadratic active filters

Leenaerts

Mladenov

1995

Circuit Theory & Apps

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The paper deals with the bounds on the sensitivities of the poles and the quality factor to the gain of the amplifier in biquadratic second-order active filters. To ensure stability, the Fialkow-Gerst conditions are taken into account. It is not possible to realize biquad filters with a better gain-sensitivity product not obeying the derived conditions. The result can be applied in filter synthesis and will give the designer more freedom to dimension the filter structure and its component values.

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Section: "L+l + a A + L (3)mentioning

confidence: 99%

Section: "L+l + a A + L (3)mentioning

confidence: 99%

On the restrictions of the sensitivities in single‐amplifier biquadratic active filters

Leenaerts

Mladenov

1995

Circuit Theory & Apps

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A chebyshev rational function with low Q‐factors

Rabrenovic

Lutovac

1991

Circuit Theory & Apps

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SUMMARYThe presented rational function is a modification of a recently published Chebyshev rational function defined by means of some orthogonal polynomials. The necessary conditions providing for the lowest pole Q-factors for a given ripple are found. The function is a ratio of two similar Chebyshev polynomial transfer functions with multiple poles.The selectivity of the function can be increased by using the Chebyshev rational characteristic function instead of the characteristic polynomials. The minimum number of active elements in the cascade connection is obtained with third-order elliptic characteristic functions.The function is compared with the Cauer (elliptic) and MCPER filters. The distinctive features of the presented function are small Q-factors of the poles, almost ideal dynamic range, simple design and poles with the same multiplicity rn, where m designates the number of cascaded blocks

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A single‐op‐amp realization of a general biquadratic transfer function

Hribsek

1992

Circuit Theory & Apps

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Low Q equiripple functions of nonminimum order

Cited by 6 publications

References 0 publications

On the restrictions of the sensitivities in single‐amplifier biquadratic active filters

On the restrictions of the sensitivities in single‐amplifier biquadratic active filters

A chebyshev rational function with low Q‐factors

A single‐op‐amp realization of a general biquadratic transfer function

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