Inductor Marking and Orientation RF Study


Simulation results of mutual coupling for inductors with:
  • Half-marking (L-05B)
  • Full-marking (L-07C)
  • No-marking (L-14C)
(1) Half-marked inductors L-05B Series
Figure 1 Half-marked inductors L-05B Series
Mutual coupling(S31) with different spacing schemes
Mutual coupling S31 with different spacing schemes
Mutual coupling(S41) for different spacing schemes
Mutual coupling S41 for different spacing schemes
Mutual coupling(S31) for different orientations
Inductor Marking and Orientation RF Study Johanson
Mutual coupling(S41) for different orientations
Mutual coupling S41 for different orientationsMutual coupling S41 cross section

(2)Fully Marked inductors L-07C Series

Figure 2 Fully Marked inductors L-07C Series
L-07C Series (0402) Fully Marked Inductor structure

L-07C Series 0402 Fully Marked Inductor structureL-07C Series 0402 cross section

Mutual coupling(S31) for different spacing schemes

Mutual coupling S31 for different spacing schemesMutual coupling(S31) for different spacing schemes

Mutual coupling(S41) for different spacing schemes

Mutual coupling S41 for different spacing schemes

 
Mutual coupling(S31) for different orientations

Mutual coupling S31 for different orientations

Mutual coupling(S41) for different orientations

Mutual coupling S41 for different orientations

(3) L-14C Series (0603) No-Marking Inductor structure
L-14C Series 0603 No-Marking Inductor structure
 
L-14C Series (0603) No Marking Inductor structure

L-14C Series 0603 No Marking Inductor structureL-14C Series 0603 cross section

Mutual coupling(S31) for different orientations

Mutual coupling S31 for different orientations

 
Mutual coupling(S41) for different orientations

Mutual coupling S41 for different orientations

SUMMARY:

  • The Mutual coupling of the half-marked inductors, with smaller inductor loop, is lower than that of full-marked and no-marking inductors.
  • Mutual coupling of half-marking inductors is higher when they’re placed at opposite orientations.

 

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