Atiqul H Baree from 945 Riverside Dr, Methuen, MA 01844, age 55, Phone: (978)7388847

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Location:

Methuen, MA

Industry:

Wireless

Work:

skyworks
principal engineer

Temperature Compensated Voltage Regulator Integrated With Mmic's
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US Patent:

7304541, Dec 4, 2007
Filed:

Aug 3, 2005
Appl. No.:

11/195886
Inventors:

Atiqul Baree - Methuen MA, US
Mikhail Shirokov - Methuen MA, US
Assignee:

Fairchild Semiconductor Corporation - South Portland ME
International Classification:

H03F 3/04
US Classification:

330296
Abstract:

A voltage regulator integrated with a monolithic microwave integrated circuit (MMIC) power amplifier that supplies a regulated bias current to the MMIC power amplifier that is compensated for temperature and voltage supply variations. The regulator circuit includes HBT transistors for current mirrors and a voltage regulator where a base-emitter voltage drop compensates for a similar base emitter drop in the current mirrors. The regulator circuit is designed to maintain constant the bias voltage and mirror currents with changes in Vcc and temperature. The compensated constant bias current to the MMIC power amplifier maintains uniform operating parameters for the power amplifier.

Multi-Mode Power Amplifier
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US Patent:

20060132232, Jun 22, 2006
Filed:

Dec 17, 2004
Appl. No.:

11/016397
Inventors:

Atiqul Baree - Methuen MA, US
Gary Hau - Nashua NH, US
Mikhail Shirokov - Methuen MA, US
James Roche - Franklin MA, US
International Classification:

H03F 1/14
US Classification:

330051000
Abstract:

A power amplifier includes an input network, output stages, coupled in parallel and configured to output power optimally in corresponding power-ranges, the output stages coupled to the input network, an output impedance matching network, coupled to the output stages and not containing a switching element, and a bias-control network, coupled between the output impedance matching network, the input network, and the output stages. In some amplifiers the output impedance matching network does not contain a switching element corresponding to the output stage configured to output power in the highest range. In other amplifiers the bias-control network is configured to isolate output stages by providing a hard shut-off to transistors of the isolated output stages.

Atiqul H Baree