Charles H Gilbert

US Patent:

48434035, Jun 27, 1989

Filed:

Jul 29, 1987

Appl. No.:

7/079182

Inventors:

Farzin Lalezari - Louisville CO
Charles G. Gilbert - Louisville CO
John M. Rogers - Boulder CO

Assignee:

Ball Corporation - Muncie IN

International Classification:

H01Q 138
H01Q 1300

US Classification:

343767

Abstract:

The subject invention relates to an antenna having broadband characteristics. The antenna is a dual notch device capable of receiving or transmitting electromagnetic waves comprising a substrate, an upper planer conducting antenna element disposed on one side of the surface of said substrate and having a first curved edge, a second conducting antenna element disposed on the other side of said substrate and having a second curved edge, said first and second curved edges being closely related to one another and spaced apart in close proximity at one point to define a feed-point therebetween with adjacent curved edges gradually tapering outwardly therefrom to define flared notches interfacing one another and interconnected by said gap.

US Patent:

60646659, May 16, 2000

Filed:

Oct 22, 1997

Appl. No.:

8/955546

Inventors:

Wayne A. Leuck - Broomfield CO
Charles G. Gilbert - Westminster CO
Ruvin I. Lerman - Eagle River AK

Assignee:

U S West, Inc. - Denver CO
MediaOne Group, Inc. - Englewood CO

International Classification:

H04B 7216

US Classification:

370335

Abstract:

CDMA (Code Division Multiple Access) communications systems and methods for performing a single to multiple frequency band conversion for mobile communications. The systems and methods include mixing a portion of a first CDMA signal in a first frequency band with a reference signal to convert a portion of the first CDMA signal to a second frequency band. The converted portion and the other portion of the first frequency band can then be transmitted. The systems and methods further include filtering a portion of a second CDMA signal having frequency components in multiple frequency bands to provide a filtered CDMA signal in the first frequency band. The filtered CDMA signal is then mixed to convert it to the second frequency band for receiver processing.