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Radio frequency particles

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Radio frequency particles


Particle circuits for disrupting signals associated with a communication system or for marking a position of a device are provided. In one embodiment, the invention relates to a composite for generating radio frequency (RF) signals, the composite including a medium configured to adhere to a device for emanating communication signals, and at least one particle circuitry within the medium, wherein the at least one particle circuitry is configured to radiate radio frequency signals for disrupting the communication signals of the device.

Inventor: Gary A. Frazier
USPTO Applicaton #: #20120299762 - Class: 342 14 (USPTO) - 11/29/12 - Class 342 


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The Patent Description & Claims data below is from USPTO Patent Application 20120299762, Radio frequency particles.

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CROSS-REFERENCE TO RELATED APPLICATION(S)

The present application claims the benefit of Provisional Application No. 61/146,609, filed Jan. 22, 2009, entitled “RADIO FREQUENCY PARTICLES”, the entire content of which is incorporated herein by reference.

BACKGROUND TO THE INVENTION

The present invention relates generally to a system and a method for degrading the operating characteristics of a radar or other radio frequency system such that the system has reduced detection range or significant aiming errors. More specifically, the present invention relates to a system and a method for using paint-like coatings or particles that can absorb and emit radio signals to disrupt the operation of a radar system.

Radar systems use electromagnetic waves to identify characteristics such as range, altitude, direction, or speed of both moving and stationary objects such as aircraft, ships, motor vehicles, weather formations, and terrain. The radar system antenna sends out pulses of radio waves or microwaves. These pulsed waves are reflected off of objects in their path, and return to the antenna, which detects and measures the reflected waves. Using the time it takes for the reflected waves to return to the antenna, a radar system computer calculates how far away the object is, its radial velocity and other characteristics.

In military applications, it is generally useful to provide a means for disrupting an enemy\'s fire control radar system so that missiles that rely upon this system for guidance cannot be accurately directed to their intercept point. Today, the most effective, and destructive, countermeasure to radar is to attack the system using an anti-radiation missile (ARM). An ARM homes-in on the transmit beam of the radar and uses kinetic or chemical energy to neutralize the radar. This approach, to make little pieces out of big pieces of the radar, has the drawback that this process is thermodynamically irreversible and may in fact be viewed as a hostile act by the government or organization that has deployed the radar. An ARM attack would certainly be viewed as an unfriendly act by the personnel situated close to the insulted radar. Thus, there is a general need for a system and a method to disrupt radar operation without limiting the ability of the radar to recover from the disruption at a later time.

SUMMARY

OF THE INVENTION

One object of the present invention is to provide a material that can be deposited onto the antenna of a radar or other radio frequency system in a manner that disrupts the sensitivity or focusing characteristic of the system to the degree that it becomes incapable of detecting downrange targets or accurately directing fire toward a detected target.

In one embodiment, the invention relates to a composite for generating radio frequency (RF) signals, the composite including a medium configured to adhere to a device for emanating communication signals, and at least one particle circuitry within the medium, wherein the at least one particle circuitry is configured to radiate radio frequency signals for disrupting the communication signals of the device.

In another embodiment, the invention relates to a composite for generating radio frequency (RF) signals, the composite including a medium configured to adhere to a device for emanating communication signals, and at least one particle circuitry within the medium, wherein the at least one particle circuitry is configured to radiate signals for marking a position of the device.

In yet another embodiment, the invention relates to a particle for disrupting signals associated with a source of ambient radio frequency (RF) energy, the particle including: circuitry configured to receive energy from the source of ambient RF energy, and generate radio frequency signals, using the received energy, for disrupting signals emanating from the source of ambient RF energy.

In still yet another embodiment, the invention relates to a composite for disrupting signals associated with a source of ambient radio frequency (RF) energy, the composite including a medium containing at least one particle including an antenna and a gain element, the gain element configured to rectify radio frequency energy received by the antenna, and oscillate using the received energy.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a radar system with a disruptive paint or other material applied to a surface of an antenna of the radar system in accordance with one embodiment of the invention.

FIG. 2 is a schematic block diagram of a particle circuit in accordance with one embodiment of the invention.

FIG. 3 is a perspective view of an integrated circuit implementation of the particle circuit of FIG. 2 in accordance with one embodiment of the invention.

FIG. 4a is a top view of the integrated circuit implementation of FIG. 3.

FIG. 4b is a schematic block diagram of a particle circuit in accordance with one embodiment of the invention.

FIG. 4c is a top view of an integrated circuit implementation of the particle circuit of FIG. 4b.

FIG. 5 is a schematic block diagram of a particle circuit having a dipole antenna in accordance with one embodiment of the invention.

FIG. 6 is a schematic diagram of a particle circuit including a solar cell, a quantum dot gain element (QDot or QD), and a spiral antenna in accordance with one embodiment of the invention.

FIG. 7 is a schematic diagram of a particle circuit including a rectifying antenna (rectenna), a QDot, and a spiral antenna in accordance with one embodiment of the invention.

FIG. 8 is a graph of current versus voltage illustrating the electrical response performance characteristics of a QDot in accordance with one embodiment of the invention.



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Previous Patent Application:
Method and integrated routing device for controlling remote systems via short messages
Next Patent Application:
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Industry Class:
Communications: directive radio wave systems and devices (e.g., radar, radio navigation)
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stats Patent Info
Application #
US 20120299762 A1
Publish Date
11/29/2012
Document #
12691682
File Date
01/21/2010
USPTO Class
342 14
Other USPTO Classes
International Class
01S7/38
Drawings
11



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