A manual tuning embodiment and a self-tuning embodiment are disclosed.

Disclosed is an automatic tuning apparatus for an RF device.

A method of automatically tuning subcarriers of a superchannel transmission.

The automatic preset tuning begins from the frequency

The invention relates to a method of automatically tuning a loop-filter of a phase locked loop.

The disclosed self tuning electrical system includes a transformer (258) having a primary and a secondary.

An automatic-tuning auxiliary circuit (30) is coupled to a transmission antenna (20).

Thus, this circuit may be applicable to an automatic tuning system and the like.

A method for automatically tuning a frequency modulator in a mobile device is described.

An automatic-tuning auxiliary circuit (80) is coupled to a transmission antenna (20) in series.

An automatic tuning auxiliary circuit (80) is coupled in series to a transmitting antenna (20).

This automatic tuning would enable a power storage devices charger circuit to move from location to location without manual tuning of the circuit and increase the effective range of an RFID circuit.

The RFID-enabling system includes auto tuning of the antenna to dynamically compensate for loading changes on the EM field.

[Eric Sorensen] is going down the path less travelled, undertaking the build of a self-tuning magnetic loop antenna.

A power supply (10) applies said drive voltage (VDRV) across terminals of the transmission antenna (20) and the automatic-tuning auxiliary circuit (30).