Dual band power amplifier

The invention 910MHz and 2.45GHz relates to a power amplifier for the RFID transceiver operating in the band, and more particularly, to provide an RFID-based system the power amplifier to maintain each of the isolation band at the two bands of 910MHz and 2.45GHz will be. And a power amplifier for the RFID transceiver according to the present invention comprises a matching circuit, and a λ / 2 in series microstrip transmission line of a 2.45GHz band implemented in a matching circuit, a distributed constant element of the 910MHz band implemented by lumped constant element, a microstrip transmission line roneun isolate the 910MHz band and 2.45GHz band, thereby improving the performance and the circuit complexity of the problem by the mutual interference. A power amplifier, a band elimination filter, a band-pass filter, RFID, transmitter, transmission line