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Transition between a rectangular waveguide and a microstrip line

A rectangular waveguide and microwave band technology, applied in the field of converters, can solve the problems of complexity, high cost and high operating frequency

Inactive Publication Date: 2006-02-15
INTERDIGITAL CE PATENT HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] These embodiments of the converter between the waveguide structure and the planar structure are more complex to realize and have to assemble several parts more precisely because of their high operating frequency
In addition, in order to prevent dielectric loss, high-quality microwave substrates are required, so that the cost is high

Method used

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  • Transition between a rectangular waveguide and a microstrip line
  • Transition between a rectangular waveguide and a microstrip line
  • Transition between a rectangular waveguide and a microstrip line

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Embodiment Construction

[0017] In Fig. 1, the converter between the rectangular waveguide and the microstrip line is formed by a ribbed rectangular waveguide G. The waveguide G is made of a foam strip of synthetic material which is also used as the substrate for the microstrip line.

[0018] As can be seen from FIG. 1, the strip of synthetic material foam extends in the longitudinal direction A between the two ends 1, 2, due to electrical properties close to those of air, mechanical properties of rigidity and light weight and low cost. Synthetic foams are, for example, polymethacrylateimide foams. A shoulder 3 perpendicular to the longitudinal direction A is formed between the two ends 1 , 2 . This shoulder 3 delimits the upper plane 4 of the ribbed waveguide and the upper plane 5 of the substrate. The upper plane 5 of the substrate is offset relative to the upper plane 4 of the ribbed waveguide perpendicular to the length of the strip by a height H corresponding to the height of the ribs of the ri...

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Abstract

The invention relates to a transition between a rectangular waveguide and a microstrip line. According to the invention, a ribbed rectangular waveguide is produced in a bar of synthetic material having a metallised base under the rib which extends in the form of a plate of synthetic material, thereby forming a substrate for the microstrip line. Moreover, the base of the rib extends between the upper plane of the ribbed waveguide and the upper plane of the substrate, the microstrip line being disposed on the upper plane of the substrate in the rib base extension.

Description

technical field [0001] The invention relates to a converter between a rectangular waveguide and a microstrip line. Waveguide structures are often well suited for low-loss and high-performance passive functions (such as corrugated horn antennas, polarizers, filters, antenna sources such as diplexers), and more specifically, at very high This functionality is available at frequencies (centimeter and millimeter wave bands). For planar structures, they are well suited for low-cost, high-volume production of devices integrating passive and active functions using methods of fabricating standard printed circuits at frequencies up to the mm-band. For example, in a satellite front end, the antenna feed, filter and polarizer (if there is one) can often be implemented using waveguide technology, while the remaining signal processing functions (low noise amplification, mixing and intermediate filtering) can be implemented using standard printed circuit technology . Background techniqu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P5/107
CPCH01P5/107Y10T29/49016H01P5/08
Inventor 阿利·洛泽多米尼克·洛心唐克里斯琴·珀森让-菲利普·库佩兹
Owner INTERDIGITAL CE PATENT HLDG