Table 1 The helical particles’ specifications of each planar array of the multi-layer array of helices.
From: Analytical model for helical particle array assessment for EMI shielding applications
Planar array number | Array 1 | Array 2 | Array 3 | Array 4 | Array 5 | Array 6 |
|---|---|---|---|---|---|---|
Fractional size | 1 | 1.25 | 1.252 | 1.253 | 1.254 | 1.255 |
R (mm) | 3.9 | 4.9 | 6.1 | 7.7 | 9.6 | 12 |
Pitch angle | 4.55° | 4.55° | 4.55° | 4.55° | 4.55° | 4.55° |
Number of turns | 1.75 (+1Â ring) | 1.75 (+1Â ring) | 1.75 (+1 ring) | 1.75 (+1 ring) | 1.75 (+1 ring) | 1.75 (+1 ring) |
Axial length (mm) | 3.4 | 4.3 | 5.4 | 6.7 | 8.4 | 10.5 |
Wire length (mm) | 68.1 | 85.1 | 106.3 | 132.9 | 166.2 | 207.7 |
Wire diameter (mm) | 0.16 | 0.20 | 0.26 | 0.32 | 0.4 | 0.48 |
Cross-section circumference (mm) | 24.7 | 30.9 | 38.6 | 48.2 | 60.3 | 75.4 |
Resonance frequency (GHz) | 5.28 | 4.22 | 3.38 | 2.70 | 2.16 | 1.73 |
