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Three-order hybrid electromagnetic coupling SIW filter based on LTCC process

A hybrid electromagnetic and filter technology, used in waveguide-type devices, circuits, electrical components, etc., can solve the problems of small size and high sideband suppression, and achieve the effect of satisfying selectivity and miniaturization

Inactive Publication Date: 2020-10-09
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to design a third-order hybrid electromagnetic coupling SIW filter based on LTCC technology, which can well solve the problem that the bandpass filter designed by traditional filter technology can not fully meet the needs of modern technology development, and has high selectivity , small in-band loss, high sideband suppression and small size features

Method used

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  • Three-order hybrid electromagnetic coupling SIW filter based on LTCC process
  • Three-order hybrid electromagnetic coupling SIW filter based on LTCC process
  • Three-order hybrid electromagnetic coupling SIW filter based on LTCC process

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Embodiment 1

[0038] The third-order hybrid electromagnetic coupling SIW filter based on LTCC technology can well solve the problem that the bandpass filter designed by traditional filter technology can no longer fully meet the needs of modern technology development. It has high selectivity and small in-band loss. features with high sideband suppression and small size, such as Figure 1~4 As shown, the following arrangement method is adopted in particular: including the top metal layer Top, the first substrate integrated waveguide cavity C1, the first metal coupling window layer L1, and the second substrate integrated waveguide cavity C2 arranged in sequence from top to bottom , the second metal coupling window layer L2, the third substrate integrated waveguide cavity C3 and the bottom metal ground Bottom; one end of the top metal layer Top (the left or right end of the entire third-order hybrid electromagnetic coupling SIW filter) is set to be coplanar The waveguide input port Input is set...

Embodiment 2

[0040] This embodiment is further optimized on the basis of the foregoing embodiments, and the same parts as the foregoing technical solutions will not be repeated here, such as Figure 1-4 As shown, further in order to better realize the present invention, the following arrangement is adopted in particular: the top metal layer Top, the first substrate integrated waveguide cavity C1, the first metal coupling window layer L1, the second substrate integrated The waveguide cavity C2 and the second metal coupling window layer L2 form a second-order SIW filter; the first metal coupling window layer L1, the second substrate integrated waveguide cavity C2, the second metal coupling window layer L2, and the third The substrate-integrated waveguide cavity C3 and the underlying metal ground Bottom form another second-order SIW filter.

Embodiment 3

[0042] This embodiment is further optimized on the basis of any of the above-mentioned embodiments, and the same parts as the aforementioned technical solutions will not be repeated here, such as Figure 1-4 As shown, further in order to better realize the present invention, the following arrangement is particularly adopted: two coupling windows are respectively etched on the first metal coupling window layer L1 and the second metal coupling window layer L2, two The coupling window is arranged symmetrically with the center line as the axis of symmetry at the center of the cavity; the coupling window on the first metal coupling window layer L1 is a rectangular coupling window, that is, the first substrate integrated waveguide (SIW) cavity C1 and the second The first metal coupling window layer L1 is placed in the middle of the two-substrate integrated waveguide (SIW) cavity C2, and two rectangular coupling windows are etched on the first metal coupling window layer L1, and the t...

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Abstract

The invention discloses a three-order hybrid electromagnetic coupling SIW filter based on an LTCC technology. The three-order hybrid electromagnetic coupling SIW filter comprises a top metal layer Top, a first substrate integrated waveguide cavity C1, a first metal coupling window layer L1, a second substrate integrated waveguide cavity C2, a second metal coupling window layer L2, a third substrate integrated waveguide cavity C3 and a bottom metal ground Bottom which are sequentially arranged from top to bottom, wherein a coplanar waveguide input port Input is arranged at one end of the top metal layer Top; and a coplanar waveguide output port Output is arranged on the bottom metal ground Bottom relative to the setting end of the coplanar waveguide input port Input. The three-order hybridelectromagnetic coupling SIW filter can well solve the problem that a band-pass filter designed by adopting the traditional filter technology cannot completely meet the development requirement of themodern technology, and has the advantages of high selectivity, low in-band loss, high sideband rejection and small size.

Description

technical field [0001] The invention relates to the technical field of miniaturized bandpass filters, in particular to a third-order hybrid electromagnetic coupling SIW filter based on LTCC technology. Background technique [0002] In recent years, with the rapid development of wireless communication technology, new communication standards emerge in an endless stream. The wireless communication system is required to be applicable to multi-band and multi-standard work, which greatly increases the complexity of the wireless communication system. The radio frequency filter is one of the key devices for frequency selection in the wireless communication system. Improving the selectivity, insertion loss and other performance of the radio frequency filter and miniaturizing the radio frequency filter have become the current research hotspots. The introduction of cross-coupling between resonators is the most common way to introduce finite transmission zeros in the frequency spectrum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/20H01P1/208
CPCH01P1/20H01P1/208
Inventor 游长江张俊殷光强杨丹丹焦卓凡朱建华肖倩
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA