Patent ID: 8928536
Filing Date: 2015-01-06
Classification: H01Q,H04B

Abstract:
1. A device comprising: a transceiver; a receiving antenna; a transmitting antenna; a receiving branch coupled between the transceiver and the receiving antenna, the receiving branch including a receiving tuning circuit and a first filter, and wherein the receiving tuning circuit matches an impedance of the receiving narrowband antenna with an impedance of a receiving amplifier and further matches the impedance of the receiving antenna with an impedance of the first filter; a transmitting branch coupled between the transceiver and the transmitting antenna, the transmitting branch including a transmitting tuning circuit, wherein the transmitting tuning circuit matches an impedance of the transmitting antenna with an impedance of a transmitting amplifier; a control unit to determine the impedance of the receiving amplifier and the impedance of the transmitting amplifier.