Patent ID: 8126522

Claim:
An antenna device for receiving radio signals in at least one operating frequency band and for being provided in the interior of a portable electronic device, the antenna device comprising: a monopole radiating and/or radiation receiving element including a feeding portion adapted to be connected to an antenna connection point; wherein: an inductor is connectable between the antenna connection point and ground; and an input of an amplifier stage is connectable to the antenna connection point; the at least one operating frequency band includes the FM band; the antenna device comprises an amplifier stage that includes a transistor that is a field effect transistor or a bipolar transistor and comprises a gate, a source, and a drain, said transistor having a minimum noise figure below 1 dB and a gain above 15 dB in the first operating frequency band; the source of the transistor is connected directly to ground; the gate of the transistor is connected to the inductor; the drain of the transistor is connectable to the radio circuit; and a resistor is connected between the drain of the transistor and a feed voltage.