Wireless detonator

Details Wireless detonator Wireless detonator

1991-10-07

1992-09-08

Jordan, Charles T.

Ammunition and explosives

Igniting devices and systems

Electrical primer or ignitor

102200, F42C 1908

Patent

active

051460440

ABSTRACT:
A wireless detonator is disclosed that includes an antenna for receiving microwaves, a detonator provided with a heating element, and a transmission circuit. The heating element in the detonator is heated by the energy of the microwaves. The transmission circuit transmits the microwave energy from the antenna directly to the heating element. The antenna has a relative gain of 0 to 20 dB in the frequency band of the microwaves. The absolute value of the reactance component in the radiation impedance of the antenna is at most 50% of the pure resistance component of that impedance. The absolute value of the reactance component in the impedance of the heating element is at most 50% of the pure resistance component of that impedance. The pure resistance components of the radiation impedance of the antenna and of the impedance of the heating element are in a range of 70 to 130% of the characteristic impedance of the transmission circuit.

REFERENCES:
patent: 4615268 (1986-10-01), Nakano et al.
patent: 4869170 (1989-09-01), Dahmberg et al.

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