Norman R Scheinberg, 7524 New St, South River, NJ 08882

7535297, May 19, 2009

Feb 27, 2007

11/711292

Xinghao Chen - Endwell NY, US
Yanbo Tian - Summit NJ, US
Norman Scheinberg - South River NJ, US

H03G 3/20

330129

An architecture and method for improving efficiency of a Class-A power amplifier by dynamically scaling biasing current thereof as well as synchronously compensating gain thereof in order to maintain overall constant gain of the Class-A power amplifier at all biasing configurations thereof. A biasing-current switching-network is operatively connected to the back-end block of the Class-A power amplifier. A gain-control switching-network is operatively connected to a front-end block of the Class-A power amplifier. A detector-and-control block is operatively connected to an output of the back-end block of the Class-A power amplifier, and samples a signal that is then compared with reference signals to determine switching configurations in the biasing-current switching-network and the gain-control switching network when the signal is processed through the front-end block of the Class-A power amplifier followed by the back-end block of the Class-A power amplifier. The biasing-current switching-network dynamically sets the back-end block biasing current of the Class-A power amplifier for a highest possible operating efficiency. The gain-control network simultaneously adjusts gain of the front-end block of the Class-A power amplifier to synchronize with a dynamic-biasing current-switching configuration to allow overall gain of the Class-A power amplifier to be constant in all biasing conditions.

2006008, Apr 27, 2006

Dec 8, 2005

11/298087

Norman Scheinberg - South River NJ, US

Anadigics, Inc. - Warren NJ

G05F 1/40

323282000

An improved Monolithic Microwave Integrated Circuit DC-to-DC voltage converter fabricated in GaAs MESFET technology is introduced. The converter comprises a differential oscillator having crossed-coupled symmetrical inductors that ensure low-noise operation. The converter further comprises a highly-efficient synchronous rectifier and a start-up circuit.

4743862, May 10, 1988

May 2, 1986

6/858797

Norman R. Scheinberg - South River NJ

Anadigics, Inc. - Warren NJ

H03F 316

330277

A JFET current mirror is employed in the voltage level shifting section of an operational amplifier. The JFET current mirror includes a first and second JFET coupled at their gates for conducting current I1 and I2 respectively. The gate of a third JFET is connected to the drain of the first JFET and the source of the third JFET is connected by a plurality of diodes to the gate of the first JFET. Current flowing through the diodes produces a voltage drop across the diodes sufficient to bias the first JFET into saturation so that I2 will track I1. A fixed resistance R in the path of I2 produces a predetermined voltage level shift provided that I1 is constant. Therefore, a voltage applied to one terminal of R is level shifted by a predetermined voltage with respect to the other terminal of R. The voltage shifted output is then coupled to an internal amplifier section and the output buffer section of the operational amplifier.

6314008, Nov 6, 2001

Oct 16, 2000

9/688548

Jianwen Bao - Bethlehem PA
John van Saders - Asbury NJ
Norman Scheinberg - South River NJ

H02M 114

363 44

The present invention uses an AC signal and an external DC control voltage to generate a plurality of levels of output DC voltages. The level of the output voltage is determined by the DC control voltage and has the opposite polarity. The invention is preferably implemented as a balanced circuit, which generates spurious signals at even harmonics of the AC frequency signal. The spurious signals can then be filtered out using a low-pass filter.

5625307, Apr 29, 1997

Mar 3, 1992

7/845293

Norman R. Scheinberg - South River NJ

Anadigics, Inc. - Warren NJ

H03B 1900
H01L 2500
H04B 128

327113

A monolithic upconverter integrated circuit is described which performs the first frequency conversion of a dual conversion cable television (CATV) receiver. The upconverter chip includes three functional blocks: a Gilbert type image-rejecting mixer, a phase splitter, and a voltage-controlled oscillator. Mixing is performed by a novel Gilbert type mixer including image-rejection inductors to improve the noise figure of the mixer. A differential circuit topology allows the monolithic upconverter chip to utilize a plastic dual inline batwing package without considerable performance loss. On-chip RF bypass networks, in the form of series RC terminations, also help compensate for the undesirable effects of pin inductances in the dual inline package. A resistor-based DC biasing scheme dramatically reduces power-up latency, allowing faster testing.

5563545, Oct 8, 1996

Sep 27, 1994

8/312730

Norman R. Scheinberg - South River NJ

Anadigics, Inc. - Warren NJ

H03K 1716
H03K 17687

327389

A monolithic upconverter integrated circuit is described which performs the first frequency conversion of a dual conversion cable television (CATV) receiver. The upconverter chip includes three functional blocks: a Gilbert type image-rejecting mixer, a phase splitter, and a voltage-controlled oscillator. Mixing is performed by a novel Gilbert type mixer including image-rejection inductors to improve the noise figure of the mixer. A differential circuit topology allows the monolithic upconverter chip to utilize a plastic dual inline batwing package without considerable performance loss. On-chip RF bypass networks, in the form of series RC terminations, also help compensate for the undesirable effects of pin inductances in the dual inline package. A resistor-based DC biasing scheme dramatically reduces power-up latency, allowing faster testing.

4739282, Apr 19, 1988

Jul 21, 1986

6/887217

Norman R. Scheinberg - South River NJ

Anadigics, Inc. - Warren NJ

H03F 316
H03F 138

330277

An FET amplifier having a current bleeder includes a positive feedback path for increasing the overall gain of the device. The positive feedback path includes an additional FET having its drain source path connected to the current bleeder and its gate connected to the output of the amplifier. The positive feedback causes the current through the current bleeder to vary in direct response to the output of the amplifier, thereby significantly increasing its overall gain.