User's Manual

AVR2043
21
8345A-AVR-11/10
Figure 5-12. Antenna tuning with series capacitor.
The final tuning step will use a shunt capacitor to correct the antenna load
impedance. A 0.5pF capacitor has been used to tune the antenna resonance
frequency to the band center. If the antenna resonance frequency is too low, the
capacitor needs to be moved towards the antenna, and vice versa.
Figure 5-13. Final tuning.