Broadcom Corporation

Axiom Microdevices, Inc.

Chilicon Power, LLC

Alexandre Rudolph Kral

Frank Carr

Afshin Mellati

Lawrence M Burns

Seyed Ali Hajimiri

Florian Bohn

Scott D Kee

Ichiro Aoki

Hui Wu

Ramon Alejandro Gomez

Christopher Richard Jones

Donald McClymont

Chun-Ying Chen

Rahul Magoon

Myles H Wakayama

Young J Shin

James Y C Chang

Iconomos A Koullias

David S P Ho

Dana Vincent Laub

Hsiang-Bin Lee

Patrick Pai

Ron Lipka

Luke Thomas Steigerwald

Rabul Magoon

Donald McGlymont

Various enhancements to grid-interactive inverters in accordance with embodiments of the invention are disclosed. One embodiment includes input terminals configured to receive a direct current, output terminals configured to provide an alternating output current to the utility grid, a controller, an output current sensor, and a DC-AC inverter stage comprising a plurality of switches controlled by control signals generated by the controller. In addition, the controller is configured to: generate control signals that cause the switches in the DC-AC inverter stage to switch a direct current in a bidirectional manner; measure the alternating output current; perform frequency decomposition of the output current; and generate control signals that cause the switches in the DC-AC inverter stage to switch current in a way that the magnitude of a plurality of unwanted current components is subtracted from the resulting output current.

Systems and methods for increasing output current quality, output power, and reliability of grid-interactive inverters

An integrated power combiner is disclosed. The power combiner includes a first circular geometry primary winding having one or more inductive elements, such as an active winding with one or more driver stages. A circular geometry secondary winding is disposed adjacent to the first primary winding, such as an active winding with one or more driver stages. A second circular geometry primary winding is disposed adjacent to the secondary winding and has one or more inductive elements. One or more connections are provided between one or more of the inductive elements of the first circular geometry primary winding and one or more of the inductive elements of the second circular geometry primary winding.

Multi-primary distributed active transformer amplifier power supply and control

A direct conversion satellite tuner is fully integrated on a common substrate. The integrated tuner receives an RF signal having a plurality of channels and down-converts a selected channel directly to baseband for further processing. The integrated tuner includes on-chip local oscillator generation, tunable baseband filters, and DC Offset cancellation. The integrated tuner can be implemented in a completely differential I/Q configuration for improved electrical performance. The entire direct conversion satellite tuner can be fabricated on a single semiconductor substrate using standard CMOS processing, with minimal off-chip components. The tuner configuration described herein is not limited to processing TV signals, and can be utilized to down-convert other RF signals to an IF frequency or baseband.

Integrated direct conversion satellite tuner

Local oscillator apparatus and method

Supply circuit for power amplifier drivers

A varactor folding technique reduces noise in controllable electronic oscillators through the use of a series of varactors having relatively small capacitance. A folding circuit provides control signals to the varactors in a sequential manner to provide a relatively smooth change in the total capacitance of the oscillator. Consequently, effective control of the oscillator is achieved with accompanying reductions in oscillator noise such as flicker noise.

Varactor folding technique for phase noise reduction in electronic oscillators

Growing community of inventors

Laguna Niguel, CA, United States of America

Alexandre Rudolph Kral