Patent ID: 8644197

Claim:
A communication front-end system, comprising: a first circuit configured to process a first RF signal in a first frequency range to transmit the first RF signal from a plurality of antennas; a second circuit configured to process a second RF signal in a second frequency range, the second RF signal being received at the plurality of antennas; and an isolation circuit that is coupled to the plurality of antennas, the first circuit and the second circuit, the isolation circuit configured to provide electromagnetic isolation between the first circuit and the second circuit; the first frequency range includes a first band and a second band, which is higher in frequency than the first band; the second frequency range includes a third band and a fourth band, which is higher in frequency than the third band; the first circuit comprises a first power amplifier that processes the first RF signal in the first band and a second power amplifier that processes the first RF signal in the second band; and the second circuit comprises a first low noise amplifier that processes the second RF signal in the third band and a second low noise amplifier that processes the second RF signal in the fourth band.