Ideal-like band-pass filter and single-frequency filter

Details Ideal-like band-pass filter and single-frequency filter Ideal-like band-pass filter and single-frequency filter

2011-01-11

2011-01-11

Zweizig, Jeffrey S (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Unwanted signal suppression

Reexamination Certificate

active

07868687

ABSTRACT:
A near ideal single frequency and band pass filter comprises an input unit, a filter combination, and an output unit. The input unit accepts an input signal which can be expressed with a mathematical formula f(t). The filter combination comprises a plurality of filters, wherein each filter can generate a control signal and performs the signal filtering process based on the control signal. The control signal can be expressed with a mathematical formula hde(θ). The filter combination processes the input signal based on a set of a plurality of control signals by means of a formula.

REFERENCES:
patent: 7002417 (2006-02-01), Maunuksela et al.
patent: 7558348 (2009-07-01), Liu et al.

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