frequency transformation

frequency transformation

[¦frē·kwən·sē ‚tranz·fər′mā·shən]
(control systems)
A transformation used in synthesizing a band-pass network from a low-pass prototype, in which the frequency variable of the transfer function is replaced by a function of the frequency. Also known as low-pass band-pass transformation.
References in periodicals archive ?
Abstract: In this work, we present a frequency transformation based dual-band filter design approach using scattering based real frequency technique.
The authors developed the frequency transformation for finding the locations of poles and zeros of specific tri-band filters [5].
In order to avoid the optimization technique, a method called the frequency transformation technique has been presented in designing the dual-band BPF.
Agrobacterium mediated high frequency transformation of an elite Indica rice variety Pusa Basmati 1 and transmission of the transgenes to R2 progeny.
The k-th coefficients of a frequency transformation represent similar frequencies, provided that the number of values in the time space is similar.
s] -- specify the susceptance zero and pole for all the resonators If a suit able frequency transformation is found the normalized susceptance [b'.
Hagiware, "Synthesis of dual-band bandpass filters using successive frequency transformation and circuit conversions," IEEE Microwave and Wireless Components Letters, Vol.
The proposed method is based on the evaluation of the characteristic polynomials of the diplexer using the proposed linear frequency transformation and established method in [6], and then coupling matrix of overall resonator diplexer can be obtained using the proposed hybrid optimization methods.
A frequency transformation can also be performed and the spectral composition of the error signal alone can be viewed.
A modified frequency transformation used for converting the measured S-parameters from the bandpass domain f to the normalized lowpass domain s' is adopted here as [2]
In [7], the authors developed the frequency transformation for finding the locations of poles and zeros of specific tri-band filters.
Classical band pass filters can be implemented by means of a bilinear frequency transformation performed on a normalized low pass prototype.

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