# US 7,746,265 B2 · System and method for suppressing radio frequency transmissions

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 7,746,265 B2
- Document ID: US7746265B2
- Status: Granted
- Kind: B2
- Application number: 12/144,400
- Filed: 2008-06-23
- Published: 2008-10-16
- Granted: 2010-06-29
- Earliest claimed: 2008-06-23
- Assignees: Pegasus Global Strategic Solutions LLC
- Inventors: Robert Haywood Brumley, II; Michael J. Reedy; Robert Haywood Brumley, III
- Web page: https://patentgrep.com/patent/US7746265B2

## CPC

- G01S 7/38: Jamming means, e.g. producing false echoes
- H04K 3/92: {related to allowing or preventing remote control}
- H04K 2203/16: for telephony
- H04K 2203/24: for communication related to weapons
- G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- H04K: SECRET COMMUNICATION; JAMMING OF COMMUNICATION

## Abstract

A system and method for suppressing radio frequency (“RF”) transmissions includes a transmitter for transmitting electronic signals that suppresses (e.g., prevents, disrupts, jams, interferes with or otherwise disables) RF transmissions. Some embodiments of the invention include a transmitter that suppresses one or more signals transmitted from a target transmitter in an RF transmission system to a target receiver in a wireless device operating in the RF transmission system to prevent, disrupt, jam, interfere with or otherwise disable an RF transmission between the target transmitter and the target receiver in the wireless device (i.e., target wireless device). These systems and methods may be used to interrupt communication, command and control of non-friendly combatant. These systems and methods may also be used to suppress RF transmissions to prevent the detonation of improvised explosive devices, or IEDs.

## Claims

### Claim 1

A system for suppressing radio frequency transmissions, the system comprising:
a transmitter that concomitantly generates suppressing signals within two or more predetermined frequency bands, wherein the predetermined frequency bands are separate and discrete from each other;
an antenna port that enables an antenna to be connected to the transmitter, the antenna receiving the suppressing signals from the transmitter and concomitantly broadcasting the suppressing signals to a volume of influence surrounding the antenna, the suppressing signals having the effect of suppressing radio frequency transmissions within a volume of influence surrounding the antenna within the two or more predetermined frequency bands; and
a power source port that enables a power source to be connected to the transmitter, the power source providing power to the transmitter.

### Claim 2 (depends on 1)

The system of claim 1, further comprising a display port that enables a display to be connected to the transmitter, the display indicating a status of the transmitter.

### Claim 3 (depends on 2)

The system of claim 2, wherein the status of the transmitter comprises at least one of a power on/off status, a transmitter on/off status, a power level at which the suppressing signal is being transmitted, a fault status, or a high temperature status.

### Claim 4 (depends on 2)

The system of claim 2, wherein the display is mounted to a vehicle so as to be observable from a cockpit of the vehicle.

### Claim 5 (depends on 2)

The system of claim 2, wherein the display is removably connected to the transmitter.

### Claim 6 (depends on 1)

The system of claim 1, wherein the antenna and the power source are mounted to a vehicle.

### Claim 7 (depends on 1)

The system of claim 1, wherein the antenna is an omni-directional antenna.

### Claim 8 (depends on 1)

The system of claim 1, wherein the antenna is a directional antenna.

### Claim 9 (depends on 4)

The system of claim 4, wherein the power source is recharged by the operation of an engine that propels the vehicle.

### Claim 10 (depends on 1)

The system of claim 1, wherein the transmitter is controlled to generate the suppression signals at a signal strength that will provide a volume of influence large enough to inhibit radio frequency transmissions to an explosive device when the antenna is inside of a kill zone of the explosive device.

### Claim 11 (depends on 1)

The system of claim 1, wherein the transmitter further comprises an outer case that houses the transmitter, the outer case being ruggedized and sealed.

### Claim 12 (depends on 11)

The system of claim 11, wherein the transmitter further comprises an external bus provided on the outer case, the external bus enabling the antenna and the power source to be removably connected from the transmitter.

### Claim 13 (depends on 12)

The system of claim 12, wherein the transmitter further comprises a display provided on the external bus, the display indicating a status of the transmitter.

### Claim 14 (depends on 12)

The system of claim 12, further comprising a display that indicates a status of the transmitter, the display being removably connected to the transmitter at the external bus.

### Claim 15 (depends on 4)

The system of claim 4, wherein the vehicle comprises a military vehicle.

### Claim 16 (depends on 4)

The system of claim 4, wherein the vehicle comprises an armored civilian vehicle.

### Claim 17 (depends on 4)

The system of claim 4, wherein the antenna is mounted to the roof of the vehicle such that the roof of the vehicle acts as a ground plane and signal reflector for the antenna.

### Claim 18

A system for suppressing radio frequency transmissions, the system comprising:
a transmitter that concomitantly generates suppressing signals within two or more predetermined frequency bands that are discrete and separate from each other, the suppressing signals being concomitantly broadcast from the transmitter to a volume of influence surrounding the antenna, the suppressing signals having the effect of suppressing radio frequency transmissions within a volume of influence surrounding the antenna; and
a mounting member that mounts the transmitter to body armor that is worn by a user of the system, wherein mounting the transmitter to the body armor of the user facilitates transport of the transmitter by the user.

### Claim 19 (depends on 18)

The system of claim 18, wherein the mounting member is provided on the transmitter.

### Claim 20 (depends on 19)

The system of claim 19, wherein the mounting member is provided on the body armor.

### Claim 21 (depends on 19)

The system of claim 19, wherein the body armor comprises a protective vest.

### Claim 22 (depends on 19)

The system of claim 19, wherein the transmitter comprises an antenna that concomitantly broadcasts the suppressing signals.

### Claim 23 (depends on 22)

The system of claim 22, further comprising an antenna mounting member, separate from the mounting member, that mounts the antenna to the body armor.

### Claim 24 (depends on 23)

The system of claim 23, wherein the antenna mounting member mounts the antenna to a first piece of body armor and the mounting member mounts at least one other component of the transmitter to a second piece of body armor.

### Claim 25 (depends on 24)

The system of claim 24, wherein the first piece of body armor comprises a helmet and the second piece of body armor comprises a protective vest.

### Claim 26 (depends on 19)

The system of claim 19, wherein the transmitter is controlled to generate the suppression signals at signal strengths that will provide a volume of influence large enough to inhibit radio frequency transmissions to an explosive device when the transmitter is inside of a kill zone of the explosive device.

### Claim 27

A system for screening potentially hostile parties, the system comprising:
a transmitter that concomitantly generates suppressing signals within two or more predetermined frequency bands that are discrete and separate from each other, the suppressing signals being broadcast from the transmitter to a volume of influence surrounding the antenna, the suppressing signals having the effect of suppressing radio frequency transmissions within a volume of influence surrounding the antenna; and
a screening module that screens potentially hostile parties for explosives,
wherein the transmitter and the screening module are arranged such that the screening module is positioned within the volume of influence during operation to inhibit an explosive device from being remotely detonated while the screening module is being used to search for explosives, and
wherein the transmitter and the screening module are configured and operated such that the effectiveness of the transmitter is not substantially impeded by the screening module and the effectiveness of the screening module is not substantially impeded by the transmitter.