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Feed network for antenna systems

A feeding network and antenna system technology, which is applied in the field of feeding network, can solve the problems of large volume and high power loss, and achieve the effects of reducing weight and volume, reducing installation size, and widening the frequency range of broadband

Active Publication Date: 2016-03-09
LISA DRAXLMAIER GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of microstrip conductors is that they have higher electrical losses compared to waveguides, which however require significantly larger volumes compared to microstrip conductors

Method used

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  • Feed network for antenna systems
  • Feed network for antenna systems
  • Feed network for antenna systems

Examples

Experimental program
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Embodiment Construction

[0064] figure 1 A waveguide HL filled with air and having dimensions 16 mm x 6 mm for the Ku-band or 7 mm x 2.5 mm for the Ka-band is shown. exist figure 1 On the upper surface of the waveguide HL shown, the waveguide is closed. Here, the closure at the end AB of the waveguide HL is approximately λ / 4 from the coupling of the two microstrip conductors MS1 , MS2 . Here, the microstrip conductors MS1 , MS2 extend from the narrow sides b1 , b2 into the waveguide HL. The microstrip conductors MS1, MS2 consist of suspended striplines (SSL) composed of printed circuit boards on which copper tapes, copper layers are coated. The printed circuit board itself consists of a dielectric having a thickness of 0.1 mm to 1 mm, preferably 0.127 mm. The copper strip lying thereon has a width of 0.2 mm to 3 mm, preferably 0.5 mm, and a thickness of 15 μm to 50 μm, preferably 17.5 μm. In order to enable the microstrip conductors MS1 , MS2 to extend into the waveguide HL, the narrow sides b1 ,...

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Abstract

A feed network accoreding to the invention comprises a waveguide having a braod side and a narrow side, and two micro-strip conductors each having a conductor loop. Each conductor loop extends from the corresponding narrow side to the waveguide and is electrically connected to the braod side of the waveguide; on the narrow side, the waveguide has a small opening; each micro-strip conductor is guided by the small opening but has no electric contact with the waveguide, so possibility of sending H field couple is produced; the sensing H field couple has low sensitivity to the micro-strip conductor compared with mechanical displacement of the waveguide due to allowance; by the use of the two conductor loops, two signal paths can be decoupled at the same time with exsistence of same electricity loss; and numbers of the power distributors in the waveguide can be reduced by a half.

Description

technical field [0001] The invention relates to a feed network with a waveguide and two microstrip conductors for antenna systems, especially for two-way satellite communications operating in the Ka, Ku or X bands, for mobile and aeronautical applications. Background technique [0002] In order for an aircraft to connect to a satellite network for the transmission of multimedia data, a wireless broadband channel with a very high data rate is required for data transmission. For this purpose, it is necessary to install on the aircraft an antenna which, although having a small size for installation under a radome, still satisfies directional wireless communication with satellites (for example, in the Ku, Ka or X bands). Extreme demands on the transmission characteristics of data communication, since any interference from neighboring satellites must be reliably excluded. [0003] In addition, the antenna is movable under the radome to update the position to the satellites as th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q19/10H01Q21/00H01Q13/08
CPCH01P5/107H01P5/19H01Q13/02H01Q21/0075H01P5/085H01Q21/065H01Q21/0037H01P5/12H01P3/081H01P3/12H01P5/02
Inventor 托马斯·默克
Owner LISA DRAXLMAIER GMBH