John U Gillis Deceased1712 Beacon St UNIT 1, Brookline, MA 02445

6711392, Mar 23, 2004

Jun 30, 2000

09/609066

John D. Gillis - Tewksbury MA

International Business Machines Corporation - Armonk NY

H04B 700

4552532, 455126, 455127, 455115, 455116, 330124 R, 330129

A balanced power amplifier for radio frequencies. The power amplifier may be switched from operating in a saturation mode, so that AMPS-type radio telephone signals may be optimally amplified, to a linear mode so that CDMA signals may be amplified. A directional coupler splits an input signal into quadrature signal components which are supplied to the input of a pair of dual mode power amplifiers. The output signals from the dual mode amplifiers are recombined in a directional coupler. The directional coupler effectively applies all of the output power to an antenna connected to one of the coupler ports, and effectively isolates the output stages of the amplifiers from any reflected power generated by the antenna.

6822511, Nov 23, 2004

Jun 27, 2003

10/607125

Mark Doherty - Westford MA
John Gillis - Tewksbury MA
Michael McPartlin - North Andover MA
David Helms - Tyngsboro MA
Phillip Antognetti - Chelmsford MA

SiGe Semiconductor Inc. - Ottawa

H03G 516

330133, 330297, 330127, 455127

Prior art architectures of power amplifiers employ a substantial die area, and utilize multiple integrated circuit technologies with a net higher manufacturing cost and large associated packaging area. A new scheme is presented wherein several sense and control signals are used to provide fine and gross control over the key figures of merit associated with integrated semiconductor power amplifiers. How and where these sense and control signals are used is crucial to achieving the most manufacturable and most economic integrated amplifier. In accordance with a first embodiment of the invention, a Dual Feedback-Low power regulation circuit for a three-stage power amplifier integrated circuit is provided. In accordance with a second embodiment of the invention, a current source feedback circuit having low RF output signal power regulation for a three-stage power amplifier integrated circuit is provided. In accordance with a third embodiment of the invention, a detector circuit in the form of an integrated logarithmic current detector circuit in conjunction with a three stage power amplifier integrated circuit.

6825725, Nov 30, 2004

Jun 27, 2003

10/607123

Mark Doherty - Westford MA
John Gillis - Tewksbury MA
Michael McPartlin - North Andover MA
David Helms - Tyngsboro MA
Phillip Antognetti - Chelmsford MA

SiGe Semiconductor Inc. - Ottawa

H03F 304

330289, 330278, 330285, 330290, 330296, 330297, 330 98, 330310

Prior art architectures of power amplifiers employ a substantial die area, and utilize multiple integrated circuit technologies with a net higher manufacturing cost and large associated packaging area. A new scheme is presented wherein several sense and control signals are used to provide fine and gross control over the key figures of merit associated with integrated semiconductor power amplifiers. How and where these sense and control signals are used is crucial to achieving the most manufacturable and most economic integrated amplifier. In accordance with a first embodiment of the invention, a Dual Feedback-Low power regulation circuit for a three-stage power amplifier integrated circuit is provided. In accordance with a second embodiment of the invention, a current source feedback circuit having low RF output signal power regulation for a three-stage power amplifier integrated circuit is provided. In accordance with a third embodiment of the invention, a detector circuit in the form of an integrated logarithmic current detector circuit in conjunction with a three stage power amplifier integrated circuit.

6882220, Apr 19, 2005

Jun 27, 2003

10/607124

Mark Doherty - Westford MA, US
John Gillis - Tewksbury MA, US
Michael McPartlin - North Andover MA, US
David Helms - Tyngsboro MA, US
Phillip Antognetti - Chelmsford MA, US

SiGe Semiconductor Inc. - Ottawa

H03G005/16
H03G003/00
H03F003/04
H04B001/04

330133, 330297, 330127, 455127

Prior art architectures of power amplifiers employ a substantial die area, and utilize multiple integrated circuit technologies with a net higher manufacturing cost and large associated packaging area. A new scheme is presented wherein several sense and control signals are used to provide fine and gross control over the key figures of merit associated with integrated semiconductor power amplifiers. How and where these sense and control signals are used is crucial to achieving the most manufacturable and most economic integrated amplifier. In accordance with a first embodiment of the invention, a Dual Feedback-Low power regulation circuit for a three-stage power amplifier integrated circuit is provided. In accordance with a second embodiment of the invention, a current source feedback circuit having low RF output signal power regulation for a three-stage power amplifier integrated circuit is provided. In accordance with a third embodiment of the invention, a detector circuit in the form of an integrated logarithmic current detector circuit in conjunction with a three stage power amplifier integrated circuit.

6917243, Jul 12, 2005

Jun 27, 2003

10/607122

Mark Doherty - Westford MA, US
John Gillis - Tewksbury MA, US
Michael McPartlin - North Andover MA, US
David Helms - Tyngsboro MA, US
Phillip Antognetti - Chelmsford MA, US

SiGe Semiconductor Inc. - Ottawa

H03G005/16
H03F003/04

330133, 330296, 330310

Prior art architectures of power amplifiers employ a substantial die area, and utilize multiple integrated circuit technologies with a net higher manufacturing cost and large associated packaging area. A new scheme is presented wherein several sense and control signals are used to provide fine and gross control over the key figures of merit associated with integrated semiconductor power amplifiers. How and where these sense and control signals are used is crucial to achieving the most manufacturable and most economic integrated amplifier. In accordance with a first embodiment of the invention, a Dual Feedback-Low power regulation circuit for a three-stage power amplifier integrated circuit is provided. In accordance with a second embodiment of the invention, a current source feedback circuit having low RF output signal power regulation for a three-stage power amplifier integrated circuit is provided. In accordance with a third embodiment of the invention, a detector circuit in the form of an integrated logarithmic current detector circuit in conjunction with a three stage power amplifier integrated circuit.