Patent Number: 6,166,598

Title: Power amplifying circuit with supply adjust to control adjacent and alternate channel power

Abstract: A power amplifying circuit with supply adjust for control of adjacent and alternate channel power. A power amplifier amplifies an input signal to produce an amplified signal. A peak-to-average detector detects peak levels of the amplified signal and an average level of the amplified signal and produces an indication of the peak levels and the average level. A controller adjusts a supply voltage to the power amplifier responsive to the indication to cause the supply voltage to lower as a difference between the peak levels and the average level increases above a predetermined level and to cause the supply voltage to elevate as the difference decreases below the predetermined level.

Inventors: Schlueter; David (Round Lake Beach, IL)

Assignee: Motorola, Inc.

International Classification: H01Q 11/00 (20060101); H01Q 11/12 (20060101); H03G 3/30 (20060101); H03G 3/00 (20060101); H04B 7/005 (20060101); H04L 27/34 (20060101); H04L 27/36 (20060101); H04Q 7/34 (20060101); H03G 003/20 (); H01Q 011/12 (); H04K 001/02 (); H04L 025/03 ()

Expiration Date: 12/26/2017