LAYOUT CONSIDERATIONS

For a proper functioning part a good board layout is neces-

sary. Special care should be taken for the series resistance

R

1 (Figure 1) that determines the attenuation. This series

resistance should have a sufficiently high bandwidth. The

bandwidth will drop when the parasitic capacitance of the

resistance is to high, which will cause a significant attenua-

tion drop at the GSM frequencies and can cause non-linear

behavior. To reduce the parasitic capacitance across resistor

R

of a single component.

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