Components for Xmultiple Antenna's
embedded antennas with frequencies above 800MHz no tuning
components to match or surpass the performance of whip antennas
are required. Below 800 MHz, some chip capacitance and inductance
may be required to compensate for the short ground planes.
This antennas devices with a 280 mm ground plane which would
be required for 1/4 wave at 270 MHz.