Patent ID: 8918064
Filing Date: 2014-12-23
Classification: H04B

Abstract:
1. A transmitter front-end for wireless communications, the transmitter front-end comprising: an antenna included within an array of antennas integrated on a chip; a phase shifter configured to adjust a phase of a signal to be transmitted by the antenna to provide a phase adjusted signal such that an effective radiation pattern of the array of antennas on the chip is reinforced in a desired direction and suppressed in undesired directions; a first power amplifier configured to amplify the phase adjusted signal for transmission by the antenna to provide a first amplified version of the phase adjusted signal at an output of the first power amplifier; a second power amplifier configured to amplify the phase adjusted signal for transmission by the antenna to provide a second amplified version of the phase adjusted signal at an output of the second power amplifier; and an impedance transformation and power combining module comprising a first transformer and a second transformer, wherein a primary winding of the first transformer is coupled to the output of the first power amplifier, a primary winding of the second transformer is coupled to the output of the second power amplifier, and a secondary winding of the first transformer is coupled in series with a secondary winding of the second transformer, wherein the secondary winding of the first transformer and the secondary winding of the second transformer form, at least in part, the antenna.