Apparatus and Method for Electromagnetic Wave Structure Modulation

• US 20130241767A1
• Filed: 01/25/2013
• Published: 09/19/2013
• Est. Priority Date: 03/13/2012
• Status: Active Grant

• Current Assignee: Duke Loi
• Original Assignee: Duke Loi
• Inventors: Loi, Duke
• Granted Patent: US 9,097,789 B2
• Time in Patent Office: Days
• US Class Current: 342/195
• CPC Class Codes: G01S 13/74 Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
• CPC Class Codes: G01S 13/75 using transponders powered from received waves, e.g. using passive transponders , or using passive reflectors
• CPC Class Codes: G01S 13/751 wherein the responder or reflector radiates a coded signal
• CPC Class Codes: G01S 7/28 Details of pulse systems
• CPC Class Codes: G06K 19/0672 with resonating marks
• CPC Class Codes: H01P 11/001 Manufacturing waveguides or transmission lines of the waveguide type
• CPC Class Codes: H01Q 15/14 Reflecting surfaces; Equivalent structures electromagnetic shields H01Q1/526
• CPC Class Codes: Y10T 29/49018 with other electrical component

Abstract

Electromagnetic wave structure modulation apparatus comprises an encoded device that has an electromagnetic wave-transparent material having a three-dimensional volume and electromagnetic wave-opaque walls, and a plurality of electromagnetic wave-opaque projections projecting into the electromagnetic wave-transparent material. The apparatus further comprises an interrogating device that has a transceiver operable to transmit an electromagnetic wave into the electromagnetic wave-transparent material, the electromagnetic wave being modulated and reflected by the electromagnetic wave-opaque walls and projections, an antenna operable to receive the reflected electromagnetic waves, and a decoder operable to decode the received reflected electromagnetic waves.

Claims

1. Electromagnetic wave structure modulation apparatus, comprising:

an encoded device comprising;

an electromagnetic wave-transparent material having a three-dimensional volume and electromagnetic wave-opaque walls;

a plurality of electromagnetic wave-opaque projections projecting into the electromagnetic wave-transparent material;

an interrogating device comprising;

a transceiver operable to transmit an electromagnetic wave into the electromagnetic wave-transparent material, the electromagnetic wave being modulated and reflected by the electromagnetic wave-opaque walls and projections;

an antenna operable to receive the reflected electromagnetic waves; and

a decoder operable to decode the received reflected electromagnetic waves.

2. Electromagnetic wave structure modulation method, comprising:

generating and directing an electromagnetic wave toward an encoded device, the encoded device comprising;

an electromagnetic wave-transparent material having a three-dimensional volume and electromagnetic wave-opaque walls;

a plurality of electromagnetic wave-opaque projections projecting into the electromagnetic wave-transparent material and operable to modulate the modulated electromagnetic wave; and

a reflector reflecting the modulated electromagnetic wave;

receiving the reflected and modulated electromagnetic wave by the electromagnetic wave-opaque walls and projections.

3. A method of forming an electromagnetic wave structure modulation apparatus, comprising:

forming an encoded device comprising;

an electromagnetic wave-transparent material having a three-dimensional volume and electromagnetic wave-opaque walls;

a plurality of electromagnetic wave-opaque projections projecting into the electromagnetic wave-transparent material;

forming an interrogating device comprising;

a transceiver operable to transmit an electromagnetic wave into the electromagnetic wave-transparent material, the electromagnetic wave being modulated and reflected by the electromagnetic wave-opaque walls and projections;

an antenna operable to receive the reflected electromagnetic waves; and

a decoder operable to decode the received reflected electromagnetic waves.