AN3394

Main criteria for key antenna design

Doc ID 018754 Rev 5

21/29

Figure 20.

Rectangular planar antennas

Once the antenna coil inductance has been calculated, a prototype coil is realized. The

value of the so-obtained prototype must then be validated by measurement. This can be

done using either a contactless or a non-contactless method.

Width

Length

s

w

1

1

8

10

3 turns, 10 segments

2 turns, 8 segments

ai15815

thickness

(cross-section)