Steven J Sharp

US Patent:

6757526, Jun 29, 2004

Filed:

Sep 19, 2000

Appl. No.:

09/664878

Inventors:

Steven J. Sharp - Portland OR 97229
Stewart S. Taylor - Beaverton OR 97006
Samuel W. Hammond - Beaverton OR 97005
Ronald R. Ruebusch - Portland OR 97219

International Classification:

H01Q 1112

US Classification:

4551271, 455126, 330285, 330297

Abstract:

An operating voltage applied to a transmitters power amplifier in a mobile wireless transceiver is dynamically controlled so as to improve the efficiency of the transmitter at all output power levels. In one embodiment, the bias current levels within the transmitter are also varied to optimize the efficiency of the transmitter at all output power levels. In a preferred embodiment, a highly efficient switching regulator is controlled by a control circuit to adjust the operating voltage and/or bias current for the power amplifier in the transmitter. The control circuit has as its input any of a variety of signals which reflect the actual output power of the transmitter, the desired output power, or the output voltage swing of the transmitter.

US Patent:

7505742, Mar 17, 2009

Filed:

Apr 9, 2004

Appl. No.:

10/822106

Inventors:

Steven J. Sharp - Portland OR, US
Stewart S. Taylor - Beaverton OR, US
Samuel W. Hammone - Beaverton OR, US
Ronald R. Ruebusch - Portland OR, US

Assignee:

TriQuint Semiconductor, Inc. - Hillsboro OR

International Classification:

H01Q 11/12
H04B 1/04

US Classification:

4551271, 455126, 330285, 330297

Abstract:

An operating voltage applied to a transmitter's power amplifier in a mobile wireless transceiver is dynamically controlled so as to improve the efficiency of the transmitter at all output power levels. In one embodiment, the bias current levels within the transmitter are also varied to optimize the efficiency of the transmitter at all output power levels. In a preferred embodiment, a highly efficient switching regulator is controlled by a control circuit to adjust the operating voltage and/or bias current for the power amplifier in the transmitter. The control circuit has as its input any of a variety of signals which reflect the actual output power of the transmitter, the desired output power, or the output voltage swing of the transmitter.

US Patent:

6148220, Nov 14, 2000

Filed:

Apr 25, 1997

Appl. No.:

8/843107

Inventors:

Steven J. Sharp - Portland OR
Stewart S. Taylor - Beaverton OR
Samuel W. Hammond - Beaverton OR
Ronald R. Ruebusch - Portland OR

Assignee:

TriQuint Semiconductor, Inc. - Hillsboro OR

International Classification:

H04B 700

US Classification:

455572

Abstract:

An operating voltage applied to a transmitter's power amplifier in a mobile wireless transceiver is dynamically controlled so as to improve the efficiency of the transmitter at all output power levels. In one embodiment, the bias current levels within the transmitter are also varied to optimize the efficiency of the transmitter at all output power levels. In a preferred embodiment, a highly efficient switching regulator is controlled by a control circuit to adjust the operating voltage and/or bias current for the power amplifier in the transmitter. The control circuit has as its input any of a variety of signals which reflect the actual output power of the transmitter, the desired output power, or the output voltage swing of the transmitter.