Modified half-mode substrate integrated waveguide inductive band filter

Abstract

The invention relates to a modified half-mode substrate integrated waveguide inductive band filter comprising a modified half-mode substrate integrated waveguide and inductive metal via holes. The modified half-mode substrate integrated waveguide inductive band filter comprises a dielectric substrate (3), a linear metal belt (4) and a trapezoidal metal belt (51); the linear metal belt (4) and the trapezoidal metal belt (5) are in parallel arrangement on the upper surface of the dielectric substrate (3), a gap (7) is reserved between the two metal belts, an input end (2) and an output end (8) are respectively set at two ends of the trapezoidal metal belt (51); the lower surface of the dielectric substrate is of a lower surface metal patch (52); the linear metal belt (4) is connected with the lower surface metal patch (52) through a row of metal via holes (1) on the liner metal belt (4), the trapezoidal metal belt (51) is connected with the lower surface metal patch (52) through a row of metal via holes (1) on the trapezoidal metal belt (51), and an inductive band (6) consisting of a row of metal via hole arrays is arranged below the trapezoidal metal belt (51). The filter is simple in structure and easy to design.

Description

technical field [0001] The invention relates to a design applicable to microwave and millimeter wave circuits, and can also be used in a small-scale modified half-mode substrate integrated waveguide inductive band filter in highly integrated systems. Background technique [0002] Filters are key components in many microwave and millimeter wave systems, and there is an urgent need for the miniaturization, low cost, easy integration and high performance of filters. For example, high-performance filters with low insertion loss and high selectivity can reduce the noise figure of the system, reduce the out-of-band interference of the system, improve the receiving sensitivity of the system, and greatly improve the performance of the radio frequency system. Likewise, the miniaturization and ease of integration of filters can reduce production costs and design complexity. Traditional microwave and millimeter wave filters are made of microstrip lines or metal waveguides, which are e...

AI Technical Summary

Problems solved by technology

With the improvement of requirements, because the traditional half-mode substrate integrated waveguide structure has only a row of metallized through-hole columns, it cannot effectively contain the energy leakage, so there is an urgent need for a new type of filter that can maintain the performance of the above filters. The advantages can meet the indicators very well, thereby reducing the indicators of other components in the system and reducing the complexity of system design

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