Patent ID: 8145119

Claim:
A method for jamming a band of frequencies within a finite spatial domain using a plurality of portable rf jamming devices, comprising: positioning a first portable rf signal jamming device at a first location; positioning a second portable rf signal jamming device at a second location that is physically separated from the first location by a first distance; positioning at least a third portable rf signal jamming device at a third location that is physically separated from the first and second locations by a second and third distance, respectively; transmitting a first rf signal in the first portable rf signal jamming device at a first portion of frequency bandwidth from a first transmitter to a first plurality of antennae associated with the first portable rf signal jamming device to produce a first radiation pattern; transmitting a second rf signal in the second portable rf signal jamming device at a second portion of frequency bandwidth from a second transmitter to a second plurality of antennae associated with the second portable rf signal jamming device to produce a second radiation pattern; and transmitting at least a third rf signal in the third portable rf signal jamming device at a third portion of frequency bandwidth from a third transmitter to a third plurality of antennae associated with the third portable rf signal jamming device to produce a third radiation pattern, the transmitted signals further being characterized such that the combined effect of the impingement of the first, second, and third radiation patterns create a 3-dimensional volume that is jammed over at least the rf frequencies being transmitted.