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Orthogonal directional coupling cross structure and feed network

A technology of directional coupling and directional coupler, which is applied in the directions of circuits, electrical components, connecting devices, etc., and can solve the problems of large-scale and difficult-to-large array structures.

Active Publication Date: 2020-04-10
SOUTHEAST UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Existing crossover structures usually can only realize simple crossover transmission, or can realize crossover filter transmission but are limited by narrow band. In addition, these structures are large in size, and it is not easy to form a large array structure

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  • Orthogonal directional coupling cross structure and feed network
  • Orthogonal directional coupling cross structure and feed network
  • Orthogonal directional coupling cross structure and feed network

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] Such as figure 1 A compact orthogonal directional coupling crossover structure is shown, which integrates two different types of 3dB directional couplers orthogonally at the same position, and achieves miniaturization while realizing coupling transmission in two orthogonal directions. The crossover structure includes a 3dB substrate-integrated waveguide directional coupler and a 3dB stripline directional coupler. Based on the structural characteristics of the substrate-integrated waveguide and stripline, a sidewall window with a suitable width is set on the sidewall of the former, and throug...

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Abstract

The invention discloses an orthogonal directional coupling cross structure and a feed network. The orthogonal directional coupling cross structure comprises a 3dB substrate integrated waveguide directional coupler and a 3dB strip line directional coupler, the 3dB substrate integrated waveguide directional coupler transmits a TE10 mode, 3dB coupling output is achieved in the X direction, the 3dB strip line directional coupler transmits a TEM mode, and 3dB coupling output is achieved in the Y direction. And the 3dB strip line directional coupler is integrated in the 3dB substrate integrated waveguide directional coupler. When the cross structure is excited in two orthogonal directions at the same time, each coupler can realize two 3dB signal outputs, and the phase difference of the two output signals is 90 degrees. The isolation degree between the two couplers can reach 20 dB or above, mode transmission in the two directions cannot interfere with each other, and good independence is achieved. According to the invention, directional coupling in the orthogonal direction can be realized, and miniaturization is realized.

Description

technical field [0001] The invention relates to the technical field of directional couplers, in particular to an orthogonal directional coupling cross structure and a feeding network. Background technique [0002] With the rapid development of wireless communication technology, high integration has become an important index for evaluating systems. However, in structures such as integrated circuit systems and antenna distribution networks, a crossover structure is often required to realize the crossover transmission of signals by two transmission lines. The traditional crossover structure is usually realized by using microstrip structure and air bridge, but the radiation loss of this semi-open structure increases with the increase of frequency, which is not suitable for high frequency. In recent years, the rapid development of substrate-integrated waveguide technology provides a better solution for high-frequency applications. The substrate-integrated waveguide has the char...

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Application Information

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IPC IPC(8): H01P5/18
CPCH01P5/18H01P5/184
Inventor 郝张成曹羽艳吴逸文
Owner SOUTHEAST UNIV
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