Ted Alan Abrams
Engineers at Kelekent Ln, Cary, NC
License number
Colorado 43001
Issued Date
Apr 7, 2009
Renew Date
Nov 1, 2015
Expiration Date
Oct 31, 2017
Type
Professional Engineer
Address
Address
117 Kelekent Ln, Cary, NC 27518
Professional information
Radio Frequency Electromagnetic Emissions Shield
US Patent:
2004016, Aug 19, 2004
Filed:
Feb 13, 2003
Appl. No.:
10/248732
Inventors:
Ted Abrams - Cary NC, US
John Duckworth - Holly Springs NC, US
Gregory O'Neill - Cary NC, US
Ludwik Wodka - Cary NC, US
Arie Slaa - Austin TX, US
John Duckworth - Holly Springs NC, US
Gregory O'Neill - Cary NC, US
Ludwik Wodka - Cary NC, US
Arie Slaa - Austin TX, US
International Classification:
H01Q001/52
US Classification:
343/841000
Abstract:
A shield for shielding radio frequency emissions being emitted from a communications antenna. The shield has a first layer of material having the physical property of generally absorbing radio frequency electromagnetic emissions and a second layer of material having the physical property of generally reflecting radio frequency emissions. The first layer of material is positioned between the second layer of material and the communications antenna. Therefore, the first layer of material absorbs a portion of the radio frequency emissions from the communications antenna, and the second layer of material reflects back the remaining emissions to the first layer of material. Therefore, the first layer absorbs a further portion of the remaining emissions. A layer of absorbing material is placed between the combined first & second layers and a material that is transparent to radio frequency emissions and through which the communications antenna radiates radio frequency energy. The purpose of the absorbing material between the transparent material and the combined first & second layers is to minimize escape of radio frequency energy along the transparent material. The radio frequency energy could otherwise escaped around the barrier of the first & second layers due to reflection and refraction of radio frequency energy within the body of the transparent material.
Apparatus And Method To Monitor And Control Power
US Patent:
7127220, Oct 24, 2006
Filed:
Dec 23, 2002
Appl. No.:
10/248168
Inventors:
Ted A. Abrams - Cary NC, US
Victor A. Lander - Short Hills NJ, US
Dov C. Taub - Highland Park NJ, US
Victor A. Lander - Short Hills NJ, US
Dov C. Taub - Highland Park NJ, US
International Classification:
H04B 1/04
US Classification:
4551275, 4551153
Abstract:
An apparatus to monitor and control power is disclosed. The apparatus may include a detector unit to detect a forward power and a reflected power. The apparatus may also include a control unit to control switching of the forward power from a first load that may be a radiating load to a second load that may be a non-radiating load in response to the forward power exceeding a predetermined threshold value or a voltage standing wave ratio (VSWR) exceeding a selected threshold value.