Patent ID: 6993299

Claim:
A method for simultaneously transmitting a plurality of radio frequency signals, comprising steps of: a. weighting each of a plurality of digital baseband transmit signals with a corresponding one of a plurality of transmit weights to produce a plurality of digital weighted signals; b. converting each of the plurality of digital weighted signals to a corresponding analog signal and then to a radio frequency signal; c. supplying each of the radio frequency signals to a corresponding one of a plurality of power amplifiers that amplify the corresponding radio frequency signal; and d. supplying each of the radio frequency signals to a corresponding one of a plurality of self-bias boosting circuits associated with corresponding ones of the plurality of power amplifiers, wherein each self-bias boosting circuit biases the corresponding power amplifier according to a level of the corresponding radio frequency signal supplied to it; and e. amplifying each radio frequency signals with a corresponding one of the plurality of power amplifiers for simultaneous transmission.