CN219917553U

CN219917553U - Waveguide resonator

Info

Publication number: CN219917553U
Application number: CN202320505690.0U
Authority: CN
Inventors: 夏运强
Original assignee: Chengdu University of Information Technology
Current assignee: Chengdu University of Information Technology
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-10-27
Anticipated expiration: 2033-03-16

Abstract

The utility model discloses a waveguide resonator, which comprises a rectangular waveguide and a metal diaphragm inserted into the rectangular waveguide, wherein the metal diaphragm comprises a first rectangular diaphragm and a second rectangular diaphragm which are perpendicular to each other; wherein the first long side and the two short sides of the first rectangular diaphragm extend to the edge of the rectangular waveguide; a space is reserved between the second long side of the first rectangular diaphragm and the edge of the waveguide; the first short side of the second rectangular membrane is connected with the second long side of the first rectangular membrane; the second short side of the second rectangular diaphragm extends to the edge of the rectangular waveguide; and the two long sides of the second rectangular diaphragm are spaced from the edge of the waveguide. The first rectangular diaphragm is equivalent to an inductor, the second rectangular diaphragm is equivalent to a capacitor, and the two rectangular diaphragms are skillfully combined into one and are in special T-shaped arrangement, so that an inductance-capacitance parallel resonant circuit is formed, the cost and the size of the inductance-capacitance parallel resonant circuit are obviously superior to those of the traditional half-wavelength waveguide resonator, and the circuit miniaturization is facilitated.

Description

Waveguide resonator

Technical Field

The utility model relates to the technical field of resonators, in particular to a waveguide resonator.

Background

The resonator is a widely used microwave element and is mainly used in microwave circuits such as filters, oscillators and the like. In the low-frequency circuit, the resonator is formed by inductance-capacitance lumped elements; lumped elements are generally no longer used when the frequency increases. Microwave resonant circuits are typically implemented with various forms of transmission lines, such as, for example, a resonant cavity, a microstrip resonator, a waveguide resonator, and the like.

A common waveguide resonator is composed of waveguide segments of half a waveguide wavelength, equivalent to a series resonator. The waveguide is usually made of metal material (copper, aluminum, etc.), the medium filled inside is air, the left and right ends are input and output ports of the waveguide, the diaphragm is inserted into the waveguide, the waveguide resonator is between two diaphragms, and the length of the waveguide resonator is half-wave guided wave length. The two diaphragms are made of metal materials and are equivalent to parallel inductors. The waveguide resonator is equivalently an LC series resonant circuit.

The common waveguide resonator is realized by half wavelength, so that the volume of the waveguide resonator is larger, the cost is higher, and the circuit miniaturization is not facilitated.

Disclosure of Invention

The utility model mainly aims to provide a waveguide resonator so as to solve the technical problems of larger volume and higher cost of a half-wavelength waveguide resonator in the prior art.

In order to achieve the above object, the present utility model provides a waveguide resonator, which has the following technical scheme:

the waveguide resonator comprises a rectangular waveguide and a metal diaphragm inserted into the rectangular waveguide, wherein the metal diaphragm comprises a first rectangular diaphragm and a second rectangular diaphragm which are perpendicular to each other; wherein the first long side and the two short sides of the first rectangular diaphragm extend to the edge of the rectangular waveguide; a space is reserved between the second long side of the first rectangular diaphragm and the edge of the waveguide; the first short side of the second rectangular membrane is connected with the second long side of the first rectangular membrane; the second short side of the second rectangular diaphragm extends to the edge of the rectangular waveguide; and the two long sides of the second rectangular diaphragm are spaced from the edge of the waveguide.

In the waveguide resonator, the first rectangular diaphragm is equivalent to an inductor, the second rectangular diaphragm is equivalent to a capacitor, and the two rectangular diaphragms are combined into one by ingenious way and are arranged in a special T shape, so that an inductance-capacitance parallel resonant circuit is formed, the cost and the size of the waveguide resonator are obviously superior to those of the traditional half-wavelength waveguide resonator, and the miniaturization of the circuit is facilitated.

As a further improvement of the utility model, the first long side of the first rectangular diaphragm is arranged on the side of the rectangular waveguide with the smallest area.

As a further development of the utility model, the first short side of the second rectangular membrane is connected to the middle of the second long side of the first rectangular membrane.

As a further improvement of the present utility model, the length of the second rectangular diaphragm is greater than 0.5 times the length of the rectangular waveguide.

As a further improvement of the utility model, the metal film is parallel or perpendicular to each side of the rectangular waveguide.

As a further improvement of the present utility model, the metal film sheet is inserted from the middle and length direction of the rectangular waveguide.

As a further improvement of the utility model, the metal diaphragm is a copper sheet.

As a further improvement of the present utility model, the rectangular waveguide is a standard waveguide, a flat waveguide or a high waveguide.

Therefore, the waveguide resonator has the advantages of simple structure, convenient use, easy adjustment of resonant frequency, convenient processing and manufacturing, and strong practicability, and effectively solves the technical problems of larger volume and higher cost of the half-wavelength waveguide resonator in the prior art.

The utility model is further described below with reference to the drawings and detailed description. Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The accompanying drawings, which form a part hereof, are shown by way of illustration and not of limitation, and in which are shown by way of illustration and description of the utility model.

In the drawings:

fig. 1 is a perspective view of a waveguide resonator according to embodiment 1 of the present utility model.

Fig. 2 is a side view of a waveguide resonator of embodiment 1 of the present utility model.

Fig. 3 is a side view of a waveguide resonator of embodiment 2 of the present utility model.

Fig. 4 is a perspective view of a waveguide resonator according to embodiment 3 of the present utility model.

Fig. 5 is a graph showing the amplitude-frequency response of the waveguide resonator according to embodiment 3 of the present utility model.

The relevant marks in the drawings are as follows:

100-rectangular waveguide, 200-first rectangular patch, 210-first long side, 220-second long side, 300-second rectangular patch, 310-first short side, 320-second short side.

Detailed Description

The present utility model will now be described more fully hereinafter with reference to the accompanying drawings. Those of ordinary skill in the art will be able to implement the utility model based on these descriptions. Before describing the present utility model with reference to the accompanying drawings, it should be noted in particular that:

the technical solutions and technical features provided in the sections including the following description in the present utility model may be combined with each other without conflict.

In addition, the embodiments of the present utility model referred to in the following description are typically only some, but not all, embodiments of the present utility model. Therefore, all other embodiments, which can be made by one of ordinary skill in the art without undue burden, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.

Terms and units in relation to the present utility model. The terms "comprising," "having," and any variations thereof in the description and claims of the utility model and in the relevant sections are intended to cover a non-exclusive inclusion.

Example 1

Fig. 1 is a perspective view of a waveguide resonator of the present embodiment. Fig. 2 is a side view of the waveguide resonator of the present embodiment.

As shown in fig. 1-2, the waveguide resonator includes a rectangular waveguide 100 and a metal film inserted into the rectangular waveguide 100, wherein the metal film is a copper sheet, and the rectangular waveguide 100 is a standard waveguide, a flat waveguide, or a high waveguide.

The metal diaphragm includes a first rectangular diaphragm 200 and a second rectangular diaphragm 300 perpendicular to each other. Wherein the first long side 210 and the two short sides of the first rectangular diaphragm 200 extend to the edge of the rectangular waveguide 100; the first long side 210 of the first rectangular diaphragm 200 is disposed on the side surface with the smallest area of the rectangular waveguide 100; the second long side 220 of the first rectangular diaphragm 200 is spaced from the edge of the waveguide; the first short side 310 of the second rectangular membrane 300 is connected to the second long side 220 of the first rectangular membrane 200; the second short side 320 of the second rectangular diaphragm 300 extends to the edge of the rectangular waveguide 100; the two long sides of the second rectangular diaphragm 300 are spaced from the edge of the waveguide; the length of the second rectangular diaphragm 300 is greater than 0.5 times the length of the rectangular waveguide 100.

Example 2

Fig. 3 is a side view of the waveguide resonator of the present embodiment.

Compared with embodiment 1, the waveguide resonator of this embodiment has the following differences: as shown in fig. 3, the first short side 310 of the second rectangular membrane 300 is connected to the middle of the second long side 220 of the first rectangular membrane 200.

Example 3

Fig. 4 is a perspective view of the waveguide resonator of the present embodiment.

Compared with embodiment 2, the waveguide resonator of this embodiment has the following differences: as shown in fig. 4, the metal film is inserted from the middle and length direction of the rectangular waveguide 100, and the metal film is parallel or perpendicular to each side of the rectangular waveguide 100.

Fig. 5 is a graph showing an amplitude-frequency response of the waveguide resonator of the present embodiment.

Fig. 5 shows a reflection characteristic curve and a transmission characteristic curve of a waveguide resonator, which are obtained by testing by a network analyzer, and fig. 5 shows that at a resonance point, the reflection loss of the waveguide resonator in a passband is small, the insertion loss is small, the reflection loss on a resistive band is large, and the insertion loss is large, which indicates that the waveguide resonator of the present utility model is easy to realize smaller size.

The content of the present utility model is described above. Those of ordinary skill in the art will be able to implement the utility model based on these descriptions. Based on the foregoing, all other embodiments that may be obtained by one of ordinary skill in the art without undue burden are within the scope of the present utility model.

Claims

1. Waveguide resonator comprising a rectangular waveguide (100) and a metal diaphragm inserted into the rectangular waveguide (100), characterized in that: the metal diaphragm comprises a first rectangular diaphragm (200) and a second rectangular diaphragm (300) which are perpendicular to each other; wherein,,

the first long side (210) and the two short sides of the first rectangular diaphragm (200) extend to the edge of the rectangular waveguide (100);

the second long side (220) of the first rectangular diaphragm (200) is spaced from the edge of the waveguide;

a first short side (310) of the second rectangular membrane (300) is connected with a second long side (220) of the first rectangular membrane (200);

the second short side (320) of the second rectangular diaphragm (300) extends to the edge of the rectangular waveguide (100);

the two long sides of the second rectangular diaphragm (300) are spaced from the edge of the waveguide.

2. The waveguide resonator of claim 1, wherein: the first long side (210) of the first rectangular diaphragm (200) is arranged on the side surface of the rectangular waveguide (100) with the smallest area.

3. The waveguide resonator of claim 1, wherein: the first short side (310) of the second rectangular membrane (300) is connected with the middle of the second long side (220) of the first rectangular membrane (200).

4. The waveguide resonator of claim 1, wherein: the length of the second rectangular diaphragm (300) is greater than 0.5 times the length of the rectangular waveguide (100).

5. The waveguide resonator of claim 1, wherein: the metal film is parallel or perpendicular to each side of the rectangular waveguide (100).

6. The waveguide resonator of claim 5, wherein: the metal film is inserted from the middle and length direction of the rectangular waveguide (100).

7. The waveguide resonator of claim 1, wherein: the metal diaphragm is a copper sheet.

8. The waveguide resonator of claim 1, wherein: the rectangular waveguide (100) is a standard waveguide, a flat waveguide or a high waveguide.