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Nexxim Simulator > Noise Source, Current, N-Branch (Netlist Only)
Current Noise Source Netlist FormatThe format to include a current noise source is: Axxxx n1+ [n2+ ...] n1-
[n2- ...] n1+, n2+, etc., are the positive nodes. n1-, n2-, etc., are the corresponding negative nodes. The list of nodes (positive plus negative) must contain an even number of nodes. Using N to represent the total number of nodes in the list, the first N/2 nodes are taken to be the positive nodes. The parameter COMPONENT=inoise_source identifies the element as a current noise source.
Current Noise Source Netlist ExampleAinsrc 10 11 12 0 0 0
Notes1. The noise correlation matrix is a symmetric conjugate matrix of dimension P ´ P, where P is the number of positive nodes:
In this matrix, the elements above the diagonal are the conjugates of the corresponding elements below the diagonal (Cjk = Ckj*). The noise correlation matrix is specified in two parts. The real part is specified with the NOISECORR_REAL parameter list and the imaginary part is specified with the NOISECORR_IMAG parameter list. 2. NOISECORR_REAL Parameter The real noise correlation coefficients form a symmetric matrix of dimension P ´ P, where P is the number of positive nodes.
In this matrix, the diagonal elements are always positive (Ckkr ³ 0). The elements above the diagonal are equal to the corresponding elements below the diagonal (Cjkr = Ckjr). For example, when P=3 the real part of the noise correlation matrix would have the following elements:
The NOISECORR_REAL parameter list should specify only the elements on or above the diagonal. The entry for the matrix in this example would have the form: NOISECORR_REAL=(c11r, c12r, c13r, c22r, c23r, c33r) 3. NOISECORR_IMAG Parameter The imaginary noise correlation coefficients form a matrix of dimension P ´ P, where P is the number of positive nodes. However, the diagonal of this matrix has all zeros:
The elements below the diagonal are the negatives of the corresponding elements above the diagonal (Cjki = -Ckji) For example, when P=3 the imaginary noise correlation coefficient matrix would have the following elements:
The NOISECORR_IMAG parameter list should specify only the elements above the diagonal. The entry for the matrix in this example would have the form: NOISECORR_IMAG=(c12i, c13i, c23i)
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