Single-cavity substrate integrated waveguide multi-transmission-zero-point filter

A substrate-integrated waveguide and filter technology, used in waveguide-type devices, electrical components, circuits, etc., can solve the problems of useless signals, that is, insufficient noise suppression, poor passband parasitic characteristics, etc., to improve frequency selectivity, good Harmonic suppression characteristics, low cost effect

Active Publication Date: 2017-02-15
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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Problems solved by technology

However, it requires a multi-layer process to achieve, the parasitic characteristics of t

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  • Single-cavity substrate integrated waveguide multi-transmission-zero-point filter
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  • Single-cavity substrate integrated waveguide multi-transmission-zero-point filter

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Embodiment Construction

[0041] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0042] combine Figure 1-Figure 9 , to describe in detail the single-cavity substrate integrated waveguide multi-transmission zero-point filter of the present invention, and its structural schematic diagram is as follows figure 1 as shown in figure 2 for figure 1 , which includes: a top metal layer 1 , an intermediate dielectric plate 2 and a bottom metal layer 3 stacked in sequence. Among them, the intermediate dielectric plate 2 is provided with metallized via holes arranged in an array along the edge, and the substrate integrated waveguide cavity 4 is formed between the metallized via holes and the top metal...

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Abstract

The invention discloses a single-cavity substrate integrated waveguide multi-transmission-zero-point filter. The single-cavity substrate integrated waveguide multi-transmission-zero-point filter comprises a top surface metal layer, a middle dielectric plate and a bottom surface metal layer which are stacked in sequence, wherein the top surface metal layer is provided with an input microstrip line, an output microstrip line, a dual-mode microstrip resonator, an interdigital type slot line and a vertical slot line; the vertical slot line is arranged in the vertical center line direction of the top surface metal layer; the dual-mode microstrip resonator is connected with one end of the vertical slot line; the interdigital type slot line and the vertical slot line are arranged in a crossed manner; metalized via holes are also formed in the middle dielectric plate; a substrate integrated waveguide cavity is formed between the middle dielectric plate and the top surface metal layer; and the top surface metal layer is used for obtaining at least four transmission zero points from high and low sidebands. By adoption of the single-cavity substrate integrated waveguide multi-transmission-zero-point filter, specific coupling topology is realized by only loading the microstrip resonator on the basis of not enlarging the area of an original circuit; and in addition, at least four transmission zero points are obtained from the high and low sidebands, so that the frequency selectivity is greatly improved.

Description

technical field [0001] The invention relates to the field of frequency selective components in the field of wireless mobile communication, in particular to a single-cavity substrate integrated waveguide multi-transmission zero-point filter. Background technique [0002] With the rapid development of mobile communication and satellite communication, higher requirements are put forward for microwave integrated circuits. Highly reliable equipment requires microwave integrated circuits to minimize the area occupied by the circuit while meeting the electrical performance indicators. [0003] Nowadays, with the development of communication technology, frequency resources are becoming increasingly tight. Due to the non-renewability of spectrum resources, the role of filters is even more critical. In modern microwave communication systems, especially in satellite communication and mobile communication systems, there is an increasing demand for narrowband bandpass filters with high ...

Claims

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Application Information

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IPC IPC(8): H01P1/212
CPCH01P1/212
Inventor 沈玮陈桂莲李振海张理正陈凯
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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