A dual modulation transmitter apparatus (100) includes first (134),
second (136), and third (132) signal paths. The first signal path
includes a polar modulator (120) coupled to a data input (115). The
second signal path includes a quadrature modulator (122) coupled to the
data input. The third signal path is coupled to an antenna (142) and includes
a switch (128) configured to couple the third signal path to the first signal
path under a first condition and to couple the third signal path to the second
signal path under a second condition. Thus, the transmitter apparatus enjoys the
best of both worlds, since it utilizes quadrature or polar modulation in the most
appropriate circumstances.
