Patent Number: 6,169,886

Title: Power amplifier control according to a delayed waveform suitable for use in a communication device

Abstract: A wireless communication device (202), such as a cellular telephone, has a power amplifier (218) and a power amplifier control (222). The power amplifier (218) is selectively controllable to amplify, to different output power levels, a signal for transmission. In a high power mode requiring amplification of the signal to a high output power level, the power amplifier control (222) controls the power amplifier to amplify the signal according to a predetermined amplitude waveform (106). In a low power mode requiring amplification of the signal to a low output power level, the power amplifier control controls the power amplifier to amplify the signal according to a delayed one of the predetermined amplitude waveform (300).

Inventors: Black; Gregory R. (Vernon Hills, IL), Hietala; Alexander W. (Phoenix, AZ)

Assignee: Motorola, Inc.

International Classification: H03G 3/30 (20060101); H04B 007/00 ()

Expiration Date: 01/02/2018