Broadband filter with single-cavity four-mode cavity resonator

A resonator and filter technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve the problems of complexity of simulation debugging, large influence of main mode, poor out-of-band suppression, etc., to meet the requirements of miniaturized communication, wide fractional Bandwidth, high Q effect

Active Publication Date: 2014-10-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, we cannot ignore that there are many challenges in the development and manufacture of dielectric multimode filters, especially in the realization of large-scale production. The main problems are as follows: First, the complex parasitic coupling of high-order mode products has

Method used

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  • Broadband filter with single-cavity four-mode cavity resonator
  • Broadband filter with single-cavity four-mode cavity resonator
  • Broadband filter with single-cavity four-mode cavity resonator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as Figure 6 ~ Figure 10 shown (wherein, to reflect the Figure 8 and Figure 9 The difference between the two perturbation metal bodies is represented by a solid line), the filter of this embodiment includes a cavity 1, a first port 2, a second port 3, a first perturbation metal body 4 and a second Two perturbation metal bodies 5; the cavity 1 is a cylindrical cavity, the shape of the first perturbation metal body 4 and the second perturbation metal body 5 is a cylinder, and the first port 2 and the second port 3 It can be used as both an input port and an output port;

[0048] A first fixing / tuning screw 6 integrated with the first perturbation metal body 4 is provided on the bottom surface of the first perturbation metal body 4, and a first fixing / tuning screw 6 integrally formed with the first perturbation metal body 4 is provided on the bottom surface of the second perturbation metal body 5. Two perturbation metal bodies 5 form an integral second fixing / tun...

Embodiment 2

[0054] The main features of this embodiment are: as Figure 16 As shown, the cavity 1 is a rectangular cavity, the shape of the first perturbation metal body 4 and the second perturbation metal body 5 is a cylinder; the first port 2 and the second port 3 can be respectively arranged in Any two mutually perpendicular surfaces of the chamber 1 except the top surface and the bottom surface (in this embodiment, the first port 2 is arranged on the front of the chamber 1, and the second port 3 is arranged on the right side of the chamber 1, And both the first port 2 and the second port 3 have a certain distance from the top surface and the bottom surface of the cavity 1); and the processing process is also to take a rectangular body, cut the bottom, and the bottom of the cut is a closed bottom plate , dig out a rectangular cavity in the remaining uncut part, so that this part forms the upper cavity. All the other are with embodiment 1.

Embodiment 3

[0056] The main features of this embodiment are: as Figure 17 As shown, the cavity 1 is a cylindrical cavity, and the first perturbation metal body 4 and the second perturbation metal body 5 are rectangular in shape. All the other are with embodiment 1 or 2.

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Abstract

The invention discloses a broadband filter with a single-cavity four-mode cavity resonator. The broadband filter with the single-cavity four-mode cavity resonator comprises a cavity, a first port, a second port, a first perturbation metal body and a second perturbation metal body, wherein both the first perturbation metal body and the second perturbation metal body are arranged on the bottom of the interior of the cavity, both the center of the first perturbation metal body and the center of the second perturbation metal body are deviated from the center of the cavity, the first perturbation metal body and the second perturbation metal body are symmetrical with the longitudinal center line of the cavity as the center, both the first port and the second port are formed in the cavity and penetrate through the outer wall and the inner wall of the cavity, a first conductor assembly is arranged at the position of the first port, a second conductor assembly is arranged at the position of the second port, the axis of the first conductor assembly is perpendicular to the axis of the second conductor assembly, and both the axis of the first conductor assembly and the axis of the second conductor assembly are perpendicular to the longitudinal line of the cavity. The broadband filter with the single-cavity four-mode cavity resonator has the advantages that the selectivity is high, the Q value is high, both designing and machining are convenient, the fractional bandwidth is wide, and the requirements of small communication can be welled met.

Description

technical field [0001] The invention relates to a filter, in particular to a broadband filter using a single-cavity four-mode cavity resonator, belonging to the field of wireless communication. Background technique [0002] In modern mobile communication technology, microwave radio frequency devices have become an indispensable and important part. As a basic radio frequency device, a filter has a series of indicators such as insertion loss, out-of-band rejection, and power capacity that have an important impact on the performance of the whole machine. The trend of system miniaturization and portability requires the filter unit to achieve the required performance indicators in a smaller space. [0003] In response to the above requirements, the waveguide cavity multimode filter has many advantages: first, high Q value; second, high power capacity; third, the waveguide cavity multimode filter can realize the single-mode requirement in one cavity The filtering characteristics...

Claims

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Application Information

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IPC IPC(8): H01P1/207
Inventor 王世伟冯世芬林景裕褚庆昕
Owner SOUTH CHINA UNIV OF TECH
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