Steven R Vaughn

US Patent:

20100035698, Feb 11, 2010

Filed:

Aug 8, 2008

Appl. No.:

12/189123

Inventors:

Kenneth T. Burns - Carlsbad CA, US
Steven Vaughn - Carlsbad CA, US

International Classification:

A63B 69/36

US Classification:

473274, 473219, 473257

Abstract:

Embodiments of swing angle retention and head movement prevention are described generally herein. Other embodiments may be described and claimed.

US Patent:

57035318, Dec 30, 1997

Filed:

Aug 28, 1996

Appl. No.:

8/703166

Inventors:

Steven A. Vaughn - Sun City CA
James A. Verkade - Lakewood CA

Assignee:

Hughes Aicraft Company - Los Angeles CA

International Classification:

H03F 132

US Classification:

330149

Abstract:

Operating on the principle of vector summation, a predistortion linearizer includes a signal divider on one side of a substrate plate that divides a microwave signal into a linear portion and a nonlinear portion. Signal energy on both the nonlinear and linear portions is coupled into two respective slotline transmission lines on the substrate by uniplanar Magic T hybrids. As the signals are transmitted along the slotlines, their relative amplitudes and phases are adjusted to introduce a distortion inverse to that expected in a subsequent amplification. The linear portion and nonlinear portion pass through another pair of baluns. The signals are then combined by an in-phase summation on the same side of the plate as the input signal divider.

US Patent:

55044611, Apr 2, 1996

Filed:

Jan 26, 1995

Appl. No.:

8/378544

Inventors:

Steven A. Vaughn - Sun City CA
Ronald E. Sorace - Redondo Beach CA

International Classification:

H04L 2720

US Classification:

332103

Abstract:

A slotline binary phase shift keyed (BPSK) modulator that is capable of operating at high frequency with relatively low sensitivity to terminating impedance. The slotline BPSK modulator comprises a slotline formed in a conductive layer disposed on a substrate, and a pair of diodes coupled to the conductive layer and disposed across the slotline. An RF carrier input signal is coupled to the slotline using a microstrip-to-coplanar line transition that forms one portion of a balanced transformer. The balanced transformer applies the RF carrier input signal with equal amplitude and 180 degree phase difference to each of the diodes. A modulating baseband signal is injected into the microstrip-to-coplanar line transition through a microstrip line and a lumped element low pass filter coupled to the microstrip-to-coplanar line transition. A direct via hole is provided for coupling a baseband modulating signal from the microstrip-to-coplanar line transition to the diodes. An output BPSK signal is extracted through a slotline-to-microstrip transition that forms a second portion of the transformer.