A multiple frequency antenna array includes a first antenna circuit and a
second antenna circuit. The first antenna circuit has a first radiation
pattern and is tuned to a first carrier frequency. The first antenna
circuit transmits a first representation of a radio frequency (RF) signal
at the first carrier frequency, where the first carrier frequency
corresponds to a carrier frequency of the RF signal and a first frequency
offset. The second antenna circuit has a second radiation pattern and is
tuned to a second carrier frequency. The second antenna circuit transmits
a second representation of the RF signal at the second carrier frequency,
where the second carrier frequency corresponds to the carrier frequency
of the RF signal and a second frequency offset.