Michael Anthony Mcginn

US Patent:

6798289, Sep 28, 2004

Filed:

May 31, 2002

Appl. No.:

10/160348

Inventors:

Michael McGinn - Tempe AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H03F 345

US Classification:

330252, 330261, 455214

Abstract:

A voltage-to-current converter having improved third order distortion is disclosed herein for use in an FM radio system, particularly an FM radio system which employs a broadband input filter rather than a narrow band input filter. By cross-coupling a main amplifier with a second amplifier that produces more distortion and has a smaller g , than the main amplifier, third order frequency peaks resulting from non-linear amplification of undesired signals can be prevented from interfering with a desired signal because the magnitude of the third order frequency peak is reduced.

US Patent:

7236756, Jun 26, 2007

Filed:

Dec 13, 2002

Appl. No.:

10/319188

Inventors:

Michael McGinn - Tempe AZ, US

Assignee:

Freescale Semiconductors, Inc. - Austin TX

International Classification:

H04B 1/18
H04B 1/06
H04B 7/00

US Classification:

4551931, 4551501, 4551802, 4551891, 4551922

Abstract:

A front end tuning system includes a tuning signal generator. The tuning signal generator includes a digital-to-analog converter (DAC) to receive a pre-conditioned tuning signal at a reference input, to receive a digital value at a digital control input, and to produce a modified tuning signal based on the digital value and the pre-conditioned signal. Preconditioning the tuning-voltage allows a simple current type DAC to be can be used, rather than an 8-bit ladder type DAC used by some other front end tuners. Significant cost savings can be achieved because less memory is required to store the digital values supplied to the DACs, and set up times can be reduced. An adjustable temperature compensation circuit provides additional adaptability.

US Patent:

8446141, May 21, 2013

Filed:

Jun 4, 2010

Appl. No.:

12/794716

Inventors:

Michael McGinn - Tempe AZ, US

Assignee:

Maxim Integrated Products, Inc. - San Jose CA

International Classification:

G05F 3/16
G05F 3/20

US Classification:

323313, 323315

Abstract:

A temperature compensated bandgap reference circuit includes a bandgap voltage generator having a temperature dependent signal output and a correction circuit coupled to the output of the bandgap voltage generator and generating a second order quadratic signal which is complementary to the signal output.

US Patent:

53250702, Jun 28, 1994

Filed:

Jan 25, 1993

Appl. No.:

8/008103

Inventors:

Michael McGinn - Scottsdale AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H03F 345

US Classification:

330256

Abstract:

An active filter circuit (10) that has a cut off frequency being substantially independent of absolute and temperature variations due to on chip resistors (R. sub. 1, R. sub. 2 and R. sub. 3) has been provided. The active filter includes a transconductance gain amplifier (16) having first and second currents (I. sub. B and I. sub. E) the ratio of which are controlled such that the absolute and temperature effects of any on chip resistors of the active filter circuit are removed. The ratio of the first and second currents of the transconductance gain amplifier are controlled by a circuit that generates third and fourth currents (I. sub. b and I. sub. e) which are a function of a bandgap voltage. The circuit then utilizes the third and fourth currents and provides, to the transconductance gain amplifier, a current that is substantially equal to the ratio of square of the third current to the fourth current, and a current substantially equal to the fourth current.

US Patent:

43933548, Jul 12, 1983

Filed:

Dec 29, 1980

Appl. No.:

6/220605

Inventors:

Michael McGinn - Tempe AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H03G 330

US Classification:

330280

Abstract:

A unity gain, closed loop, feedback amplifier is described which accurately defines the changeover point in an AGC system to provide a first output which varies in response to an AGC input signal and is indicative of the level thereof up to a predetermined threshold value and thereafter remains constant and then to provide a second output which is indicative of the applied AGC input signal becoming more positive than the threshold level. The amplifier changeover circuit comprises a first circuit loop and a second circuit loop coupled with a comparator amplifier which is adapted to receive the AGC input signal. With the AGC input signal being less than the threshold level the first circuit loop is responsive to increases in the input signal to provide an output signal which is indicative of the level thereof. During this region of the AGC input signal the second circuit loop is held non-responsive until such time that the AGC input signal becomes more positive than the threshold level at which time a second output a signal is produced therefrom which is indicative of the level of the AGC input signal. The output of the first circuit loop is maintained constant at a bias reference level during the interval that the second circuit loop is rendered responsive to the AGC input signal.

US Patent:

46382658, Jan 20, 1987

Filed:

Jun 3, 1985

Appl. No.:

6/740366

Inventors:

Gerald K. Lunn - Scottsdale AZ
W. Eric Main - Mesa AZ
Michael McGinn - Scottsdale AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H03H 748

US Classification:

333214

Abstract:

A variable reactance, the value of which is controllable, is produced between a pair of terminals of a variable reactance circuit comprising a pair of current steering circuits. First and second reactive components are coupled respectively between the pair of terminals and the first and second current steering circuits to produce first and second antiphase reactive currents'. The first reactive current is split by the first current steering circuit into first and second antiphased proportional currents. Likewise, the second reactive current is split by the second current steering circuit into third and fourth antiphased proportional currents with said first and third currents being antiphased with respect to each other. The first reactive current is summed at a first one of the pair of terminals with said first and third currents while the second reactive current is summed at the second one of the pair of terminals with said second and fourth currents to produce the variable reactance across the terminals.

US Patent:

43576290, Nov 2, 1982

Filed:

Dec 29, 1980

Appl. No.:

6/220611

Inventors:

Michael McGinn - Tempe AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04N 508

US Classification:

358153

Abstract:

A variable slicing level is provided for the sync pulse separator of a television (TV) receiver to enable proper sync signal separation from the video signal as the strength of the received signal changes. The automatic gain control (AGC) signal is used to vary the conduction of at least a single additional transistor to move the slicing level toward or away from the sync pulse tip depending upon the strength of the received signal.

US Patent:

47453702, May 17, 1988

Filed:

Aug 30, 1987

Appl. No.:

7/081085

Inventors:

Michael McGinn - Scottsdale AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H03F 345

US Classification:

330252

Abstract:

A circuit for shifting the phase of an applied differential input signal is disclosed which includes first and second differential amplifiers each having an input across which the input signal is applied, each differential amplifier having an input and an output transistor the emitters of which are coupled together via a respective capacitor. A first resistor is coupled between the emitter of the input transistor of first one of the differential amplifiers and the emitter of the output transistor of the second differential amplifier while a second resistor is coupled between the emitter of the input transistor of the second differential amplifier and the emitter of the output transistor of the first differential amplifier.

Address:

5043 Yesteroaks Pl, Pensacola, FL 32504

VIN:

1A8HX58257F510300

Make:

CHRYSLER

Model:

ASPEN

Year:

2007