Patent ID: 7509100

Claim:
An antenna interface unit, comprising: a multi-band antenna for communicating a plurality of communication bands; a band pass filter for separating at least one band from the plurality of communication bands; an antenna matching circuit connected between the multi-band antenna and the band pass filter, comprising: a first connection point connected to the multi-band antenna; a first inductor connected between the first connection point and a ground; a second inductor connected to the first connection point and a second connection point; a first capacitor connected between the second connection point and the ground; a second capacitor connected between the second connection point and the band pass filter; wherein at least one of the first inductor, the second inductor, the first capacitor and the second capacitor is a first tunable ferroelectric (FE) component comprising: an FE material; and a control signal source electrically connected to the FE material for transmitting a control signal to the FE material to adjust one of a capacitance and an inductance of the first tunable FE component.