Table Of Contents

Pattern Generator (Periodic Sinc) (G Dataflow)

Version:
    Last Modified: January 9, 2017

    Generates a signal containing a periodic sinc pattern.

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    amplitude

    Amplitude of the pattern.

    Default: 1

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    delay

    Shifts the pattern in the time axis.

    Default: 0

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    order

    Number of zero crossings between two adjacent peaks, which is equal to this input minus 1.

    Default: 9

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    error in

    Error conditions that occur before this node runs. The node responds to this input according to standard error behavior.

    Default: No error

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    dt

    Sampling interval. This input must be greater than zero. If this input is less than or equal to zero, this node sets the output pattern to an empty array and returns an error.

    Default: 0.1

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    samples

    Number of samples in the pattern. If this input is less than 1, the node sets the output pattern to an empty array and returns an error.

    Default: 128

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    periodic sinc pattern

    Output periodic sinc pattern.

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    error out

    Error information. The node produces this output according to standard error behavior.

    Algorithm for Generating the Periodic Sinc Pattern

    If the sequence Y represents periodic sinc pattern, this node generates the pattern according to the following equation:

    y i = { a ( 1 ) k ( n 1 ) a sin ( n ( i Δ t d ) / 2 ) n sin ( ( i Δ t d ) / 2 ) i × Δ t d = 2 k π , k is an integer Otherwise

    for i = 0, 1, 2, ..., N - 1

    where

    • a is the amplitude
    • n is the order
    • d is the delay
    • N is the samples. A higher value n results in a wider bandwidth.

    Where This Node Can Run:

    Desktop OS: Windows

    FPGA: Not supported


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