helixpitch2spacing

Spacing between turns of helix

collapse all in page

Syntax

s = helixpitch2spacing(a,r)

Description

s = helixpitch2spacing(a,r) calculates the spacing between the turns of a helix antenna given the pitch angle, a, and the radius of the helix, r.

example

Examples

collapse all

Open Live Script

Calculate spacing for helix with pitch varying from 12 degrees to 14 degrees in steps of 0.5 and 20 mm radius. 

s = helixpitch2spacing(12:0.5:14,20e-3)
s = 1×5

    0.0267    0.0279    0.0290    0.0302    0.0313
Open Live Script

Calculate spacing for helix with pitch varying from 12 degrees to 14 degrees in steps of 0.5 and radius 20 mm.

s = helixpitch2spacing(12:0.5:14,20e-3)
s = 1×5

    0.0267    0.0279    0.0290    0.0302    0.0313
Open Live Script

Calculate the spacing of a helix that has a pitch of 12 degrees and a radius that varies from 20 mm to 22 mm in steps of 0.5 mm.

s = helixpitch2spacing(12,20e-3:0.5e-3:22e-3)
s = 1×5

    0.0267    0.0274    0.0280    0.0287    0.0294
Open Live Script

Calculate spacing for helix with pitch varying from 12 degrees to 14 degrees in steps of 0.5 and radius varying from 20mm to 22mm in steps of 0.5.

s = helixpitch2spacing(12:0.5:14,20e-3:0.5e-3:22e-3)
s = 1×5

    0.0267    0.0286    0.0305    0.0324    0.0345

Input Arguments

collapse all

Pitch angle of helix, specified as a scalar or vector in meters.

Example: 12:0.5:14

Radius of helix, specified as a scalar or vector in meters.

Example: 20e-3

Note

If the pitch angle and radius are both vectors, then their lengths must be equal.

Output Arguments

collapse all

Spacing between helix turns, returned as a scalar or vector in meters.

Version History

Introduced in R2015a

See Also