Antenna impedance tuner

A packaged module comprising:

• a packaging substrate configured to receive and support a plurality of components;
• and
• an impedance tuner circuit implemented on the packaging substrate, and including a first node configured to be connected to a radio circuit and a second node configured to be connected to an antenna, the impedance tuner circuit further including a bypass path, a first series capacitance path, a second series capacitance path, and an inductance path, each path implemented between the first node and the second node, each path including a respective switch configured to allow the respective path to couple or uncouple the first and second nodes, the impedance tuner circuit further including a first shunt path and a second shunt path, each shunt path implemented between the second node and ground, and including a shunt switch configured to allow the shunt path to couple or uncouple the second node and the ground, the impedance tuner circuit further including a switchable grounding path having a grounding switch and implemented along the inductance path and configured to allow the inductance path to provide a series inductance path when the inductance path couples the first and second nodes, or a shunt inductance path between the first node and the ground when the inductance path uncouples the first and second nodes.

An impedance tuner comprising:

• a first node configured to be connected to a radio circuit and a second node configured to be connected to an antenna;
• and
• an inductance circuit including an inductor and a first switch connected in series such that the inductor is connected to the first node and the first switch is connected to the second node, the inductance circuit further including a second switch implemented between ground and a node between the inductor and the first switch, such that the inductance circuit is capable of providing a series inductance path between the first and second nodes or a shunt inductance path between the first node and the ground.