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ISGW broadband band-pass filter with double transmission zeros and wide stop-band

A wide stop band, double transmission technology, applied in the direction of waveguide devices, electrical components, circuits, etc., can solve the problem of not being able to effectively suppress space radiation and plane waves, and achieve suppression of space radiation and plane waves, high miniaturization, and small size Effect

Pending Publication Date: 2019-07-09
YUNNAN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, this will cause the SIW filter to form a non-closed waveguide structure, which cannot effectively suppress space radiation and plane waves

Method used

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  • ISGW broadband band-pass filter with double transmission zeros and wide stop-band
  • ISGW broadband band-pass filter with double transmission zeros and wide stop-band
  • ISGW broadband band-pass filter with double transmission zeros and wide stop-band

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] refer to Figure 1 to Figure 5 , the ISGW broadband bandpass filter with dual transmission zeros and wide stopband in the embodiment of the present invention includes an upper dielectric board 1, a lower dielectric board 3, and a spacer dielectric board 2 arranged between the upper dielectric board 1 and the lower dielectric board 3 .

[0025] The upper surface of the upper dielectric board 1 is printed with a first copper clad layer 11, and the lower ...

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Abstract

The invention discloses an ISGW broadband band-pass filter with double transmission zeros and wide stop-band, which comprises an upper dielectric plate, a lower dielectric plate and a spacer dielectric plate arranged between the upper dielectric plate and the lower dielectric plate. The upper surface of the upper dielectric plate is printed with a first copper-clad layer. The lower surface of theupper dielectric plate is printed with circular metal patches, and a first metal through hole is formed in each circular metal patch to form an artificial magnetic conductor structure. The upper surface of the lower dielectric plate is printed with a second copper-clad layer which is provided with three pairs of U-shaped slots. The two ends of the second copper-clad layer are respectively connected with a transition gradient line and a feeding micro-strip line for realizing impedance matching. The lower surface of the lower dielectric plate is printed with a grounded third copper-clad layer, and periodically arranged second metal through holes and third metal through holes are respectively formed in the two sides and middle of the third copper-clad layer to realize a filtering function. The ISGW broadband band-pass filter can suppress space radiation and plane wave and achieve high integration and miniaturization, and has the advantages of small size, easy integration and stable structure.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to an ISGW broadband band-pass filter with double transmission zero points and a wide stop band. Background technique [0002] High-performance microwave and millimeter filters are required to achieve high transmission efficiency in fifth-generation (5G) mobile communication systems. Microwave broadband bandpass filter is a vital part of modern wireless communication systems. With the rapid development of microwave integrated circuits and the increasingly tight spectrum resources, the entire system is developing in the direction of miniaturization and high performance. The performance and size of the medium filter put forward higher requirements. Unfortunately, filters designed by metal waveguides are no longer suitable for highly integrated small modules and systems, because such microstrip filters have weak anti-electromagnetic interference, serious radiation leakage, and large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203
CPCH01P1/203
Inventor 申东娅杨杰
Owner YUNNAN UNIV
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