Daniel J Mccarthy

US Patent:

6920316, Jul 19, 2005

Filed:

Sep 4, 2001

Appl. No.:

09/946010

Inventors:

Lawrence Edwin Connell - Naperville IL, US
Neal W. Hollenbeck - Palatine IL, US
Michael Lee Bushman - Hanover Park IL, US
Daniel Patrick McCarthy - Elk Grove Village IL, US

Assignee:

Freescale Semiconductor, Inc. - Austin TX

International Classification:

H04B001/26
H04B001/18

US Classification:

4551831, 4551801, 4551821, 4551951, 4551961

Abstract:

A regulation circuit, incorporated in a single integrated circuit with a first circuit load, which as an input coupled to a power supply which produces a source voltage, and a first output coupled to the first circuit load. The regulation circuit comprises an input capacitor for reducing the magnitude of a voltage change at the first output, and at least a first voltage regulator for producing a predetermined voltage at the first load.

US Patent:

7332979, Feb 19, 2008

Filed:

Oct 28, 2005

Appl. No.:

11/261978

Inventors:

Lawrence E. Connell - Naperville IL, US
Daniel P. McCarthy - Elk Grove Village IL, US
Michael L. Bushman - Hanover Park IL, US

Assignee:

Freescale Semiconductor, Inc. - Austin TX

International Classification:

H03B 5/36

US Classification:

331183, 331160

Abstract:

A frequency source having a fast start-up time and low noise in steady state is presented. The frequency source includes an oscillator and a hybrid automatic gain control (AGC) loop that switches between an analog AGC loop at oscillator start up and a digital AGC loop at steady state operation. The analog AGC loop includes a peak detector connected to the oscillator and an error integrator integrating the difference between the peak detector output and a reference voltage. The digital AGC loop includes a comparator comparing the peak detector output and high/low reference voltages, an oscillator counter providing a timer signal, a digital-to-analog converter (DAC) supplied with a digital word, and a low pass filter between the DAC and the oscillator. The timer signal causes a multiplexer to select either the analog AGC loop or the digital AGC loop.

US Patent:

8588726, Nov 19, 2013

Filed:

Jan 30, 2012

Appl. No.:

13/360926

Inventors:

Lawrence E. Connell - Naperville IL, US
Daniel P. McCarthy - Elk Grove Village IL, US

Assignee:

Futurewei Technologies, Inc. - Plano TX

International Classification:

H04B 1/26
H04K 3/00

US Classification:

455326, 327113

Abstract:

An apparatus comprising a low noise mixer comprising a transconductance amplifier configured to receive a differential voltage and to generate a differential current signal, a passive mixer directly connected to an output of the transconductance amplifier, and a transimpedance amplifier coupled to the passive mixer, wherein the transimpedance amplifier is configured to receive a current signal and convert the current signal to a voltage signal.