User's Manual
Table Of Contents
22
AVR2043
8345A-AVR-11/10
Figure 5-13, page 21, and Figure 5-14 show the final result as a diagram and on the
board.
Figure 5-14. Antenna tuning with series and shunt capacitor.
In most cases, it is beneficial to tune the antenna a little towards higher frequencies.
The reason is that environmental changes in most cases tune the antenna down to
lower frequencies. Such environmental changes can be any kind of object that is
situated near the antenna, such as a housing or table surface.
The tuning determined in this example is only valid for the antenna example board.
The REB231ED, with its different ground plane design and many more differences,
may have other parts assembled.