A sub-band antenna matching method and an antenna matching system for
selectively matching a communication bandwidth segment impedance have
been provided. The method comprises: accepting a frequency-dependent
impedance from an antenna; and, selectively supplying a conjugate
impedance match for the antenna at a sub-band of a first communication
band. In some aspects, the method selectively supplies a conjugate
impedance match for the antenna at a sub-band of a second communication
band. More specifically, the method comprises: tuning a first tuning
circuit to a first frequency; simultaneously tuning a second tuning
circuit to a second frequency to match the antenna at a low end of the
first communication band. Likewise, the first tuning circuit is tuned to
a third frequency and the second tuning circuit is tuned to a fourth
frequency to match the antenna at a high end of the first communication
band in response to the third and fourth frequencies.