WO2007112850A1 - Batterie de generateurs a microondes a haute puissance destinee a emettre des impulsions a haute intensite de champ - Google Patents

Batterie de generateurs a microondes a haute puissance destinee a emettre des impulsions a haute intensite de champ Download PDF

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Publication number
WO2007112850A1
WO2007112850A1 PCT/EP2007/002428 EP2007002428W WO2007112850A1 WO 2007112850 A1 WO2007112850 A1 WO 2007112850A1 EP 2007002428 W EP2007002428 W EP 2007002428W WO 2007112850 A1 WO2007112850 A1 WO 2007112850A1
Authority
WO
WIPO (PCT)
Prior art keywords
generators
array
air
array according
insert
Prior art date
Application number
PCT/EP2007/002428
Other languages
German (de)
English (en)
Inventor
Robert Stark
Jürgen Urban
Original Assignee
Diehl Bgt Defence Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Diehl Bgt Defence Gmbh & Co. Kg filed Critical Diehl Bgt Defence Gmbh & Co. Kg
Publication of WO2007112850A1 publication Critical patent/WO2007112850A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/064—Two dimensional planar arrays using horn or slot aerials

Definitions

  • the invention relates to an array of microwave generators according to the preamble of claim 1.
  • Such an array of high-power microwave generators which are also referred to as DS HPMs (damped sinusoidal high power microwave generators), is known from DE 1 03 13 286 B3. It has a coaxial quarter-wave resonator whose oscillation behavior is determined on the one hand by the capacitance of a cylinder capacitor and on the other hand by the inductances of a spark gap discharge switch between the capacitor electrodes and the current-carrying conductor.
  • the so-called Marx pulse generator also referred to simply as the Marx generator.
  • the coaxial to the inner electrode of the capacitor subsequent, stretched for the purpose of impedance adjustment hollow truncated cone opening antenna for emitting the after sparking the spark gap from the highly oscillating pulse-shaped discharge current induced electromagnetic field has a
  • Dipole radiation characteristic on The originally generated by means of the discharge current length of the high voltage pulse is typically a few nanoseconds at a pulse power up to a few gigawatts; this energy is then emitted sinusoidally attenuated due to the impedance matching.
  • Such microwave generators as such and in particular their group operation have already proven themselves in practice extremely well, they provide the probably currently highest radiatable with mobile equipment pulse field strengths (namely field strengths of well over 100 kV / m, normalized to a meter distance).
  • Resonators generators in general, can not only experience high-voltage flashovers between them, but, above all, a performance penalty in the resulting radiated field due to non-optimal mutual antenna spacings.
  • the desired mutual distances are given by the radiated DS center frequency with about a quarter of their wavelength.
  • Device volume "(kV / m 4), an approximately constant quantity retains The aim should be, however, with the same equipment volume an effective reinforcement; or with the same active power downsizing of the device volume (and the associated devices weight) in the interest of physically smaller arrays - for use as in a. Hand luggage, by manipulators or airborne over long distances by means of carrier projectiles.
  • the invention is based on the technical problem of specifying a generic microwave generator array whose group operation increased power density in the far field despite smaller building
  • Fig. 3 shows the approach of a preferred practical realization staggered with increased dielectric constant of the insert, here in the form of a non-metallic thick-walled container with a liquid filling.
  • the microwave generators 11 (here 11.1 and 11.2) of a generator array 12 which are adjacent to each other in air 15 cause a certain mutual one as explained above
  • Minimum distance 13 between each other It is illustrated in FIG. 1 under symbolic representation of the electromagnetic wave propagating between the generators 11. 1 - 1. 2 as a succession of two sinusoidal oscillations.
  • This original minimum allowable distance 13 is reduced according to Figure 2 to a smaller distance 13 ", when the phase velocity of the wave propagation between the adjacent generators 11.1 - 11.2 according to the invention is reduced.
  • the generators 1 1.1 - 11.2 can be arranged on both sides of an insert 14 of a .Material whose dielectric constant (DK), such as in the case of most plastics, greater than that of the air 15, for example in the case of acrylic glass (DK approx. 3).
  • DK dielectric constant
  • phase velocity (free electromagnetic wave propagation velocity) is inversely proportional to the square root of the relative dielectric constant of the non-metallic passage medium, the propagation velocity of the electromagnetic wave through the liner 14 decreases. Because so because of the insert 14 with its enlarged
  • Dielectric constant the phase velocity reduced is performed on the previous distance 13, compared to air 15, a greater number of oscillations, as illustrated in Figure 2 by the comparison with Figure 1 higher-frequency sine wave .; or the previous (FIG. 1) number of oscillations is already executed on the shorter path 13 'through the insert 14, as shown in FIG.
  • the respective wave train retains the original physical properties in terms of the same high-frequency behavior despite different generator spacings 13 and 13 '.
  • the insert 14 does not have to fill the entire space (distance 13) between the adjacent generators 11. A change from air 15 and
  • Insert 14 would only lead to a reduction in the ratio of FIG. However, a sharp jump in dielectric in the pad 14 in the field between the generators 11 can lead to interfacial reflections which affect the electromagnetic field to be radiated and thereby the desirable far-field additive superposition of the array 12. This is according to an embodiment of the invention thereby avoidable that an insert 14 with, for example due to material doping or at least -S harsh, from the on the Generators 1 1 to be pointed ends to the intermediate mid-point locally as continuously as possible (gradieii or at least stages) increasing dielectric constant is used.
  • Three-layer structure already proved to be completely sufficient against disturbing reflex phenomena in the transition of the electromagnetic waves between air 15 and insert 14.
  • a two-stage construction principle is realized as shown in Figure 3 with a three-layer sandwich insert 14 in the form of non-metallic thick walls 14 'of a container such as hard rubber or wood (DK about 3) or plastic similar properties, with a material 80) or ceramic (DK> 100) is filled in.
  • This filling material 14 "thus determines the very low phase velocity, ie the generator spacing 13, which is now only very small ", while the material of the walls 14 'electrically the impedance transition and at the same time as an enclosing container 14' serves.
  • the integration density of DS-HPM generators 11 can thus be increased noticeably, thus increasing their performance with the same apparatus volume (number of generators per unit volume) or the apparatus volume while maintaining the
  • the effective propagation velocity of the electromagnetic waves between the adjacent generators 11, whose time synchronously emitted wavefronts are to overlap effective amplifying in the far field, in particular by introducing deposits 14 with respect to air 15 increased dielectric constant is reduced.

Landscapes

  • Constitution Of High-Frequency Heating (AREA)

Abstract

On peut augmenter de manière notable l'intensité d'intégration de générateurs DS-HPM (11) et donc augmenter leur puissance pour un même volume d'appareil (nombre des générateurs par unité de volume) ou diminuer le volume des appareils tout en conservant la puissance d'émission si, selon l'invention, on réduit la vitesse de propagation des ondes électromagnétiques entre les générateurs (11) mutuellement voisins en incorporant des garnitures (14) dont la constante diélectrique est supérieure à celle de l'air (15).
PCT/EP2007/002428 2006-03-28 2007-03-20 Batterie de generateurs a microondes a haute puissance destinee a emettre des impulsions a haute intensite de champ WO2007112850A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006014230.6 2006-03-28
DE200610014230 DE102006014230A1 (de) 2006-03-28 2006-03-28 Array aus Hochleistungs-Mikrowellengeneratoren zum Abstrahlen von Impulsen hoher Feldstärke

Publications (1)

Publication Number Publication Date
WO2007112850A1 true WO2007112850A1 (fr) 2007-10-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/002428 WO2007112850A1 (fr) 2006-03-28 2007-03-20 Batterie de generateurs a microondes a haute puissance destinee a emettre des impulsions a haute intensite de champ

Country Status (2)

Country Link
DE (1) DE102006014230A1 (fr)
WO (1) WO2007112850A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8576109B2 (en) 2010-06-17 2013-11-05 Diehl Bgt Defence Gmbh & Co. Kg Method and configuration for generating high-energy microwave pulses
US8982010B2 (en) 2011-07-09 2015-03-17 Diehl Bgt Defence Gmbh & Co. Kg Antenna configuration for emitting microwave pulses
US10441191B2 (en) 2008-06-02 2019-10-15 Rohde & Schwarz Gmbh & Co. Kg Measuring device and a method for microwave-based investigation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018004568B4 (de) 2018-06-08 2024-02-01 Diehl Defence Gmbh & Co. Kg Strahlungsquelle für Mikrowellen-Pulse und Strahlungseinrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2998602A (en) * 1951-10-03 1961-08-29 John C Cacheris Energy decoupling of closely spaced radar antenna horns
US3277488A (en) * 1964-07-27 1966-10-04 John G Hoffman Antenna decoupling by means of a lossy dielectric slab
WO2002058190A1 (fr) * 2001-01-22 2002-07-25 Antenova Limited Antenne a resonateur dielectrique a trois alimentations mutuellement orthogonales
US20030142026A1 (en) * 2002-01-31 2003-07-31 Hadden John M. Surface/traveling wave suppressor for antenna arrays of notch radiators
WO2004068633A1 (fr) * 2003-02-01 2004-08-12 Qinetiq Limited Antenne reseau a commande de phase et procede de commande de couplage mutuel entre elements

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1555756A (en) * 1975-03-18 1979-11-14 Aerialite Aerials Ltd Aerials
US6034638A (en) * 1993-05-27 2000-03-07 Griffith University Antennas for use in portable communications devices
US5528254A (en) * 1994-05-31 1996-06-18 Motorola, Inc. Antenna and method for forming same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2998602A (en) * 1951-10-03 1961-08-29 John C Cacheris Energy decoupling of closely spaced radar antenna horns
US3277488A (en) * 1964-07-27 1966-10-04 John G Hoffman Antenna decoupling by means of a lossy dielectric slab
WO2002058190A1 (fr) * 2001-01-22 2002-07-25 Antenova Limited Antenne a resonateur dielectrique a trois alimentations mutuellement orthogonales
US20030142026A1 (en) * 2002-01-31 2003-07-31 Hadden John M. Surface/traveling wave suppressor for antenna arrays of notch radiators
WO2004068633A1 (fr) * 2003-02-01 2004-08-12 Qinetiq Limited Antenne reseau a commande de phase et procede de commande de couplage mutuel entre elements

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KINGSLEY S P AND O'KEEFE S G: "Beam steering and monopulse processing of probe-fed dielectric resonator antennas", IEE PROCEEDINGS: RADAR, SONAR & NAVIGATION, INSTITUTION OF ELECTRICAL ENGINEERS, GB, vol. 146, no. 3, June 1999 (1999-06-01), pages 121 - 125, XP002158084, ISSN: 1350-2395 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10441191B2 (en) 2008-06-02 2019-10-15 Rohde & Schwarz Gmbh & Co. Kg Measuring device and a method for microwave-based investigation
US8576109B2 (en) 2010-06-17 2013-11-05 Diehl Bgt Defence Gmbh & Co. Kg Method and configuration for generating high-energy microwave pulses
US8982010B2 (en) 2011-07-09 2015-03-17 Diehl Bgt Defence Gmbh & Co. Kg Antenna configuration for emitting microwave pulses

Also Published As

Publication number Publication date
DE102006014230A1 (de) 2007-10-11

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