John E Gibbs

US Patent:

7024171, Apr 4, 2006

Filed:

Feb 25, 2003

Appl. No.:

10/373353

Inventors:

John Gibbs - Lynnwood WA, US

Assignee:

ICOM America, Incorporated - Bellevue WA

International Classification:

H04B 1/06

US Classification:

455260, 455 76, 455112, 455216, 375375, 375373

Abstract:

Frequency synthesizer utilizing fractional-N synthesis includes a phase detector having an input receivable of a reference frequency, a loop filter arranged to receive the signal from the phase detector, a tunable oscillator arranged to receive a tuning signal generated by the loop filter and provide an output frequency and an integer divider arranged to receive the output frequency of the oscillator, divide it by a division control number (N+F) and provide the divided output frequency to the phase detector. The division control number is made up of an integer (N) and a fraction portion (F) separated into at least two different fractions. The fraction portion is generated by at least two sigma-delta converters, each processing a respective fraction with the sigma-delta converter processing a smaller fraction being driven at a lower clock rate than a sigma-delta converter processing the largest fraction. By driving the sigma-delta converter which processes a smaller fraction at a reduced clock rate, the sigma-delta converter can consume less power and be manufactured at reduced cost.

US Patent:

7826561, Nov 2, 2010

Filed:

Dec 20, 2006

Appl. No.:

11/642156

Inventors:

John A. Gibbs - Edmonds WA, US

Assignee:

ICOM America, Incorporated - Bellevue WA

International Classification:

H03C 1/52
H04L 27/04
H04L 27/00
H04L 27/06
H03D 1/00

US Classification:

375301, 370503, 375326, 375343, 4551841

Abstract:

Method for tuning a Single Sideband receiver including processing the signal in the time domain, converting the signal to the frequency domain, processing the signal in the frequency domain, converting the modified signal from the frequency domain to a correlation domain, processing the signal in the correlation domain and analyzing the processed signal from the correlation domain to determine a receiver tuning error.

US Patent:

20160091112, Mar 31, 2016

Filed:

Sep 30, 2014

Appl. No.:

14/502633

Inventors:

- Chicago IL, US
John H. Gibbs - Bothell WA, US

International Classification:

F16K 47/04
B64D 13/02
G05D 7/06
F16K 3/02
F15D 1/00

Abstract:

A system and method for regulating pressure inside a vehicle (“cabin pressure”) is disclosed. The system can include a forward gate and an aft gate that can be moved from a closed position to an open position to release cabin pressure in a controlled manner. The forward gate, the aft gate, or both can comprise an interior cavity and one or more permeable surfaces. When open, or partially open, an airflow can be created by a pressure differential between the cabin pressure and the pressure outside the vehicle (“atmospheric pressure”). At least a portion of the airflow can flow through the one or more permeable surfaces and the hollow cavity of the forward gate, the aft gate, or both to promote laminar flow through the gates and into the atmosphere alongside the vehicle (e.g., an aircraft fuselage). In this manner, flow efficiency can be increased and noise reduced.