Patent ID: 7912499

Claim:
A multi-band RF apparatus used for wireless communications comprising: a chip carrier having a substrate; a first integrated circuit mounted on the chip carrier; a transceiver formed on the first integrated circuit, the transceiver configured to transmit and receive in multiple frequency bands; a first power amplifier electrically coupled to the transceiver and configured to amplify signals in a first frequency band; a second power amplifier electrically coupled to the transceiver and configured to amplify signals in a second frequency band; a first antenna electrically coupled to the first power amplifier for transmitting and receiving signals in the first frequency band; a second antenna electrically coupled to the second power amplifier for transmitting and receiving signals in the second frequency band, wherein the first and second antennas are integrated in the substrate of the chip carrier; a third antenna electrically coupled to the transceiver for receiving signals in the first frequency band; a fourth antenna electrically coupled to the transceiver for receiving signals in the second frequency band, wherein the first, second, third, and fourth antennas are integrated in the substrate of the chip carrier; a first isolator electrically coupled between the first antenna and the first power amplifier; and a second isolator electrically coupled between the second antenna and the second power amplifier.