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numSummationTerms

Change number of summation terms for calculating periodic Green's function

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Syntax

numSummationTerms(array,num)

Description

numSummationTerms(array,num) changes the number of summation terms used to calculate periodic Green's function of the infinite array. This method calculates 2*num+1 of the periodic Green's function. The summation is carried out from –num to +num. A higher number of terms results in better accuracy but increases the overall computation time.

example

Examples

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Open Live Script

Create an infinite array with the scan elevation at 45 degrees. Calculate the scan impedance. By default, the number of summation terms used is 21.

h = infiniteArray(ScanElevation=45);
s = impedance(h,1e9)
s = 
85.0254 +71.0104i

Change the number of summation terms to 51. Calculate the scan impedance again.

numSummationTerms(h,25)
s = impedance(h,1e9)
s = 
85.1711 +71.0443i

Change the number of terms to 101. Increasing the number of summation terms results in a more accurate scan impedance. However, the time required to calculate the scan impedance increases.

numSummationTerms(h,50)
s = impedance(h,1e9)
s = 
85.2162 +71.0490i

Input Arguments

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Infinite array, specified as an infiniteArray object.

Example: infiniteArray(ScanElevation=45)

Number to calculate summation terms, specified as a scalar. The summation is carried out from –num to +num.

Example: 50

Version History

Introduced in R2015b

See Also

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