HPM hardened mine

Abstract

The invention is a high power microwave hardened mine wherein a detonationharge and its appropriate detonation circuitry are disposed within a housing that is impervious to high power microwave energy. A power source and a sensor that provides the detonation signal are connected to the detonation circuitry via two sets of input and output piezoelectric transducers which convert an electrical signal to an acoustic one, the input, and then convert the acoustic signal back to an electrical signal, the output. By providing for d.c. to r.f. and r.f. to d.c. converters, the power source can be placed externally to the metal package and therefore, the battery can be easily and safely replaced.

What is claimed is: 
     
       1. A mine which is hardened against high power microwave energy comprising: a metal package that is of such dimensions so as to attenuate high power microwave energy;   a pair of piezoelectric transducers mounted on the metal package such that one transducer of the pair is mounted on an inside of the metal package and the other transducer of the pair is mounted on an outside of the metal package;   a sensor means disposed externally to the metal package, the sensor means being electrically connected to the transducer mounted on the outside of the metal package;   detonation circuitry disposed in the metal package, the detonation circuitry being electrically connected to the transducer mounted on the inside of the metal package;   an explosive charge disposed in the metal package and connected to the detonation circuitry; and   a battery disposed in the metal package and connected to the detonation circuitry.   
     
     
       2. A mine which is hardened against high power microwave energy comprising: a metal package that is of such dimensions so as to attenuate high power microwave energy;   first and second pairs of piezoelectric transducers each pair mounted on the metal package such that one transducer of each pair is mounted on an inside of the metal package and the other transducer of each pair is mounted on an outside of the metal package;   a sensor means disposed externally to the metal package, the sensor means being electrically connected to the transducer of the first pair which is mounted on the outside of the metal package;   detonation circuitry disposed in the metal package, the detonation circuitry being electrically connected to the transducer of the first pair which is mounted on the inside of the metal package;   an explosive charge disposed in the metal package and connected to the detonation circuitry;   a battery disposed outside the metal package;   a d.c. to r.f. converter mounted on the outside of the metal package and connected to the battery and to the transducer of the second pair which is mounted on the outside of the metal package; and   an r.f. to d.c. converter disposed in the metal package and connected to the transducer of the second pair which is mounted on the inside of the metal package and to the detonation circuitry.