A power amplifier for a dual antenna is disclosed. The power amplifier
comprises at least four controlled amplifier loops receiving a signal to
be transmitted. The power amplifier also comprises a first combining
structure combining at least two of the amplifier loops and a second
combining structure combining at least two of the amplifier loops. The
power amplifier also comprises a ninety degree hybrid receiving output
from the first and second combining structures and providing output to a
first antenna output and a second antenna output.