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Diehl Munitionssysteme Gmbh & Co. Kg

Diehl Defence Gmbh & Co. Kg

Diehl Munitionssysteme Gmbh & Co.

Martin Hertel

Robert Stark

Volker Koch

Werner Wiesbeck

Eberhard Gschwendtner

Torsten Wappler

Stefan Wachtl

Harald Schieb

A horn antenna for emitting an electromagnetic HPEM microwave pulse along a central axis contains a microwave generator for the pulse having a waveguide along the central axis with a generator opening for the pulse, and a horn structure for shaping the pulse with an input opening and an emission opening for the pulse. The generator contains at least one HPEM source for the pulse. Each HPEM source contains at least two antennas for pulse components, disposed in succession in parallel with the central axis. The pulse is formed as a sum of the pulse components. A method for reconstructing a horn antenna to form the horn antenna with increased power, includes constructively increasing a number of antennas toward a respective HPEM source and orienting remaining antennas in a row relative to the first antenna, increasing the waveguide length, and keeping other dimensions of the horn antenna unchanged.

Horn antenna and method for reconstructing a horn antenna

A radiation source for emitting an electromagnetic HPEM microwave pulse contains a microwave generator for generating the pulse. The generator has a generator opening for outputting the pulse. A horn structure is provided for shaping the pulse. The horn structure has an input opening, which is connected to the generator opening and is intended to radiate in the pulse, and an emission opening for emitting the shaped pulse. The generator contains at least two pulse sources for respectively generating a pulse component. The pulse is the sum of the pulse components. A radiation device contains such a radiation source and a control device for triggering the pulse sources in a temporally synchronized manner for the purpose of respectively emitting a pulse component.

Radiation source for microwave pulses and radiation device

A high-power electromagnetic source for HPEM pulses in a desired radiation direction includes at least three antennas fixed in relation to one another for pulse components, wherein at least two groups of antennas with a respective main direction are present, and a control unit for the activation and phase position of the pulse components for the superimposition for the HPEM pulse, wherein the current radiation direction of said pulse is selectable in an angle range around the main direction. A vehicle with an HPEM source has the antennas mounted in a fixed position or a support for the antennas is pivotably mounted on the vehicle. In a method for emitting the HPEM pulse, all antennas are controlled in order to select the radiation direction in the angle range of less than 360&#xb0;.

High-power electromagnetic source, vehicle and method

A slot antenna for the fuse of artillery ammunition, is provided through a sandwich structure in which an axially divided resonator ring chamber axially enclosed between upper and lower metallic cover discs profiled to be stable in respect of shape, is provided with a dielectric ring disc which extends with a peripherally extending color radially opposite a central cylindrical reflector wall through an axial slot between the two hollow-cylindrical outside walls of the ring chamber to the outer surface of the fuse casing which is also peripherally slit. In one of the two cover discs the inner edge of the antenna slot which opens into the ring space is defined by a hoop which is inserted into the front side of the outer wall and on which connecting locations which are displaced relative to each other in the peripheral direction are contacted through the dielectric ring disc and the axially oppositely disposed cover disc to a circuit carrier disc, where they are brought together in single-phase manner through a matching network to an antenna line, the second phase of which is connected to the cover disc adjacent thereto.

Slot antenna for artillery ammunition

A munition article is to be provided with an antenna which, by virtue of a characteristic which is uniform all around, permits interference-free reception of items of satellite navigation information, even if in the manner of an artillery projectile it is fired with spin along an elongate ballistic trajectory, so that a tail antenna with a spherical characteristic does not allow the expectation of good reception factors in relation to navigation satellites which are as high as possible above the horizon. Therefore the tip ( ) of the fuse tip ( ) of the projectile is equipped with a dipole satellite antenna which faces in the direction of flight. Connected to the dipole ( ) which is arranged concentrically with respect to the longitudinal axis ( ) of the projectile are symmetrically disposed conductor portions ( ) which rest with a close fit in recesses ( ) in the ballistic cap ( ).

Munition article with antenna for satellite navigation

A munition article ( ) is to be provided with an antenna ( ) which, by virtue of a characteristic which is uniform all around, permits interference-free reception of items of satellite navigation information, even if in the manner of an artillery projectile ( ) it is fired with spin along an elongate ballistic trajectory, so that a tail antenna with a spherical characteristic does not allow the expectation of good reception factors in relation to navigation satellites which are as high as possible above the horizon. Therefore the fuse tip ( ) of the projectile ( ) is equipped with a hollow-frustoconical portion of electrically conductive material such as light metal, which is designed in the form of a round-slot satellite antenna ( ) and in which a coaxial annular hollow space ( ) opens to the peripheral surface ( ) of the fuse through a slot ( ) which extends around the arrangement radially with respect to the longitudinal axis ( ) of the projectile and which is in the form of an annular disc configuration. As feed cables coaxial cables ( ), distributed uniformly around the periphery, can be connected with their inner and outer conductors ( ) at the inner mouth opening ( ) of the slot ( ) towards the hollow space ( ) to the slot walls ( ).

The invention relates to a method for identifying the particles contained in a gaseous or liquid or carrier medium by measuring scattered light aimed at the medium. The method of the invention identifies particles of very small size and also measures the geometric shape of the particles. This is accomplished by simultaneously operating at least three light sources aimed at the volume to be analyzed, and detecting the scattered light with at least three detectors. The measured values of the detected light are correlated and evaluated to identify the particles.

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Lauf, Germany

Martin Hertel