Anthony Mitchell Martin

US Patent:

6919851, Jul 19, 2005

Filed:

Jul 29, 2002

Appl. No.:

10/207665

Inventors:

Shawn D. Rogers - Jessup MD, US
Chalmers M. Butler - Clemson SC, US
Anthony Q. Martin - Greenville SC, US

Assignee:

Clemson University - Clemson SC

International Classification:

H01Q009/16

US Classification:

343749, 343822, 343860

Abstract:

A broadband loaded antenna and matching network with related methods for design optimization are disclosed. The loaded antenna structures may preferably be either monopole or dipole antennas, but the particular methods and techniques presented herein may be applied to additional antenna configurations. The load circuits positioned along an antenna may comprise parallel inductor-resistor configurations or other combinations of passive circuit elements. A matching network for connecting an antenna to a transmission line or other medium preferably includes at least a transmission line transformer and a parallel inductor. Various optimization techniques are presented to optimize the design of such broadband monopole antennas. These techniques include implementation of simple genetic algorithms (GAs) or micro-GAs. Component modeling for selected components may be effected through either lumped element representation or curved wire representation.