CN111816967B - High-power waveguide tuner - Google Patents
High-power waveguide tuner Download PDFInfo
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- CN111816967B CN111816967B CN202010685336.1A CN202010685336A CN111816967B CN 111816967 B CN111816967 B CN 111816967B CN 202010685336 A CN202010685336 A CN 202010685336A CN 111816967 B CN111816967 B CN 111816967B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/12—Hollow waveguides
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Abstract
The invention discloses a design scheme of a high-power waveguide tuner, which comprises a section of waveguide and at least one pin. The depth to which the pin protrudes into the waveguide may be adjustable externally from the waveguide. At least one nut is disposed around each of the pins. Any two pins adjacent along the Z direction are respectively arranged in the X direction and the-X direction of the axis of the waveguide along the Z direction. At least one of the pins is offset from the axis of the waveguide by a distance greater than 5% of the wavelength in free space at the central operating frequency of the high power waveguide tuner. The pin has a diameter greater than 14% of a wavelength in free space at a central operating frequency band of the high power waveguide tuner. The invention is mainly used in microwave systems with high average power, in particular in the field of microwave energy industrial application.
Description
Technical Field
The invention relates to a microwave allocating device, in particular to a waveguide pin allocating device with high power capacity and enhanced allocating capacity.
Background
Load mismatch is a technical problem that often needs to be solved in designing microwave systems. Conventional waveguide tuners use three pins of adjustable depth spaced at quarter-wave waveguide wavelength along the waveguide axis to better meet the matching needs of many applications. However, the conventional waveguide tuner has the following disadvantages: 1) because the distance between the pins is fixed, the diameter of the pins is smaller, especially when a choke groove structure is arranged around each pin, the diameter of the pins is less than 13% of the wavelength in free space at the center frequency of the working frequency band of the waveguide tuner. The use of smaller diameter pins will directly limit the power capacity of the dispenser. 2) If a pin extends into a section of waveguide, when the top end of the pin in the waveguide approaches the opposite waveguide wall, a resonance state occurs, and the equivalent parallel impedance of the pin is zero, resulting in total reflection of the microwave. This condition is beneficial when the dispenser is used to dispense highly mismatched loads. However, since the pin of the conventional waveguide adapter is disposed at the center of the broad side of the waveguide, the tip of the pin in the waveguide must be very close to the opposite waveguide wall in order to achieve the resonance state, which easily causes the waveguide adapter to break down. Thus, the deployment capabilities of conventional waveguide tuners are limited.
Disclosure of Invention
The invention aims to provide a high-power waveguide tuner. In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a high-power waveguide tuner comprises a waveguide with an axis along the Z direction and a wide edge along the X direction and at least one pin with an axis along the Y direction. The depth to which the pin protrudes into the waveguide may be adjustable externally from the waveguide. The X direction, the Y direction and the Z direction form a rectangular coordinate system.
In order to lock the pins after a determined depth of their penetration into the waveguide, at least one nut is arranged around each of said pins.
The waveguide is a rectangular waveguide.
The pins are arranged in sequence along the Z direction. Any two pins adjacent along the Z direction are respectively arranged in the X direction and the-X direction of the axis of the waveguide along the Z direction. Thus, along the Z direction, all the pins are arranged in sequence in the X and-X directions of the broad side of the waveguide, with their axes along the Y direction being located at respective bends of the fold line on one waveguide surface.
In order to increase the spacing of adjacent pins without increasing the spacing of adjacent pins in the Z-direction, and to facilitate the use of larger diameter pins to increase the power capacity of the high power waveguide tuner, the axis of at least one of the pins in the Y-direction is offset from the axis of the waveguide in the Z-direction by a distance greater than 5% of the wavelength in free space at the center frequency of the operating frequency band of the high power waveguide tuner. In a preferred design, the axes of all the pins in the Y direction are offset in the X direction from the axes of the waveguides in the Z direction by a distance equal to 19% of the wavelength in free space at the center frequency of the operating band of the high power waveguide tuner. At this time, any three pins adjacent in the Z direction are located approximately at three vertices of an equilateral triangle.
We can now use thicker pins: the pin is circular in cross-sectional shape and has a diameter greater than 14% of a wavelength in free space at a center frequency of an operating frequency band of the high power waveguide tuner.
The number of the pins is generally 3, but may be more than 4, 6 or 9.
To further increase the power capacity of the high power waveguide tuner, the tip of at least one pin within the waveguide is rounded. In a preferred design, the tips of all pins within the waveguide are rounded.
To prevent leakage of microwave energy from the gap between the pin and the waveguide while reducing conductor losses on the pin, a choke groove structure is provided around at least one pin.
Because the number of pins is increased among the pins of the traditional waveguide tuner, the matching bandwidth of the high-power waveguide tuner can be widened, and the pins are arranged in a way that: all the pins are sequentially arranged along the Z direction, and the distance between the axis of any two adjacent pins along the Z direction along the Y direction in the Z direction is 10-30% of the waveguide wavelength of the port of the high-power waveguide tuner.
The invention discloses a design scheme of a high-power waveguide tuner, which improves the power capacity of the tuner by adopting a pin with a large diameter deviating from the axis of a waveguide. The invention is mainly used in microwave systems with high average power, in particular in the field of microwave energy industrial application.
Drawings
FIG. 1 is a schematic top view of example 1 of the present invention
FIG. 2 is a schematic cross-sectional view of the AA of FIG. 1
FIG. 3 is a schematic top view of embodiment 2 of the present invention
FIG. 4 is a schematic cross-sectional view of the AA of FIG. 3
The reference numbers in the drawings correspond to the names: 1-waveguide, 2-pin, 3-nut, 4-choke groove structure.
Some of the terms specified in this specification are as follows:
the horizontal direction, i.e., the direction lying in the horizontal plane, i.e., the direction lying in the XZ plane.
The vertical direction is the direction perpendicular to the horizontal plane.
The upper side is the Y direction.
The lower side is in the-Y direction.
And on the left, the X direction.
The right direction is the-X direction.
Detailed Description
Example 1
As shown in fig. 1 and 2.
A high-power waveguide tuner comprises a waveguide 1 with an axis along the Z direction and a wide edge along the X direction and 6 pins 2 with axes along the Y direction. The depth to which the pin 2 protrudes into the waveguide 1 can be adjusted from the outside of the waveguide 1.
A nut 3 is provided around each of said pins 2.
The waveguide 1 is a rectangular waveguide.
The axis of each pin 2 in the Y direction is offset from the axis of the waveguide 1 in the Z direction in the X direction by a distance greater than 5% of the wavelength in free space at the center frequency of the operating band of the high power waveguide tuner.
The cross section of each pin 2 is circular.
The pins 2 are arranged in sequence along the Z direction. Any two of the pins 2 adjacent in the Z direction are arranged in the X direction and the-X direction of the axis of the waveguide 1 in the Z direction, respectively. Thus, all the pins are arranged in the direction Z in the direction X and in the direction-X of the broad side of the waveguide 1, their axes in the direction Y being located at the respective bends of a broken line.
The tips of all the pins 2 located inside the waveguide 1 are rounded.
Around each pin 2 a choke groove structure 4 is arranged.
The pins 2 are arranged in sequence along the Z direction. The distance between the axes of any two adjacent pins 2 along the Z direction along the Y direction in the Z direction is 10-30% of the waveguide wavelength of the port of the high-power waveguide tuner.
Example 2
As shown in fig. 3 and 4.
A high-power waveguide tuner comprises a waveguide 1 with an axis along the Z direction and a wide edge along the X direction and 3 pins 2 with axes along the Y direction. The depth to which the pin 2 protrudes into the waveguide 1 can be adjusted from the outside of the waveguide 1.
A nut 3 is provided around each of said pins 2.
The waveguide 1 is a rectangular waveguide.
The axes of all the pins 2 in the Y direction are offset in the X direction from the axis of the waveguide 1 in the Z direction by a distance equal to 14% of the wavelength in free space at the center frequency of the operating band of the high power waveguide tuner.
The pin 2 has a circular cross-sectional shape with a diameter equal to 16% of the wavelength in free space at the center frequency of the operating frequency band of the high power waveguide tuner.
The pins 2 are arranged in sequence along the Z direction. Any two of the pins 2 adjacent in the Z direction are arranged in the X direction and the-X direction of the axis of the waveguide 1 in the Z direction, respectively. Thus, all the pins are arranged in the direction Z in the direction X and in the direction-X of the broad side of the waveguide 1, their axes in the direction Y being located at the respective bends of a broken line.
The tips of all the pins 2 located inside the waveguide 1 are rounded.
Around each pin 2 a choke groove structure 4 is arranged.
The pins 2 are arranged in sequence along the Z direction. The distance between the axes of any two adjacent pins 2 along the Z direction along the Y direction in the Z direction is 10-30% of the waveguide wavelength of the port of the high-power waveguide tuner.
2 embodiments of the invention are given above. The actual implementation is far more extensive than listed here. The high-power waveguide tuner is generally finished by adopting a rectangular waveguide section through the working procedures of cutting, drilling, tapping and the like.
According to the high-power waveguide tuner disclosed by the invention, the pin is arranged in a manner of deviating from the center of the wide side of the waveguide, so that the diameter of the pin can be increased, the power capacity of the high-power waveguide tuner can be improved, and the tuning capacity of the high-power waveguide tuner can be enhanced. The invention can be widely used in microwave systems with high average power, in particular in the field of microwave energy industrial application.
Claims (8)
1. A high-power waveguide tuner is characterized by comprising a waveguide (1) with an axis along the Z direction and a wide edge along the X direction and a pin (2) with an axis along the Y direction; the number of the pins is 3 or more than 4, and the depth of the pins (2) extending into the waveguide (1) can be adjusted from the outside of the waveguide (1); providing a pin disposed off-center of the waveguide broadside for increasing the power capacity of the high power waveguide tuner and for enhancing the tuning capability of the high power waveguide tuner; the pins are arranged offset from the centre of the broadside of the waveguide: the axis of at least one pin (2) along the Y direction deviates from the axis of the waveguide (1) along the Z direction in the X direction by a distance greater than 5% of the wavelength in free space at the center frequency of the operating frequency band of the high-power waveguide tuner; the X direction, the Y direction and the Z direction form a rectangular coordinate system.
2. A high power waveguide tuner as claimed in claim 1, wherein at least one nut (3) is provided around each pin (2); the depth of the pin (2) extending into the waveguide (1) can be locked and fixed by the nut (3).
3. A high power waveguide tuner as claimed in claim 1, wherein the waveguide (1) is a rectangular waveguide.
4. A high power waveguide tuner as claimed in claim 1, wherein the pin (2) is a cylindrical body with a circular cross-sectional shape and a diameter greater than 14% of the wavelength in free space at the center frequency of the operating band of the high power waveguide tuner.
5. A high power waveguide tuner as claimed in claim 1, wherein the pins (2) are arranged in sequence in the Z direction; any two pins (2) adjacent along the Z direction are respectively arranged in the X direction and the-X direction of the axis of the waveguide (1) along the Z direction.
6. A high power waveguide tuner as claimed in claim 1, wherein the tip of at least one pin (2) within the waveguide (1) is rounded.
7. A high power waveguide tuner as claimed in claim 1, wherein a choke groove structure (4) is provided around at least one pin (2).
8. A high power waveguide tuner as claimed in claim 1, wherein the pins (2) are arranged in sequence in the Z direction; the distance between the axes of any two adjacent pins (2) along the Z direction along the Y direction in the Z direction is 10-30% of the waveguide wavelength of the port of the high-power waveguide tuner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685336.1A CN111816967B (en) | 2020-07-16 | 2020-07-16 | High-power waveguide tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685336.1A CN111816967B (en) | 2020-07-16 | 2020-07-16 | High-power waveguide tuner |
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| Publication Number | Publication Date |
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| CN111816967A CN111816967A (en) | 2020-10-23 |
| CN111816967B true CN111816967B (en) | 2022-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010685336.1A Active CN111816967B (en) | 2020-07-16 | 2020-07-16 | High-power waveguide tuner |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115939711B (en) * | 2022-10-21 | 2024-03-29 | 电子科技大学 | Heightened waveguide dispatcher |
| CN115863947B (en) * | 2022-10-21 | 2024-04-02 | 电子科技大学 | T-shaped waveguide dispatcher |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1200994A (en) * | 1968-05-17 | 1970-08-05 | Standard Telephones Cables Ltd | Temperature compensation of waveguide filters |
| CN1131826A (en) * | 1994-11-21 | 1996-09-25 | 日本电气株式会社 | Waveguide coaxial converter |
| CN205723894U (en) * | 2016-05-11 | 2016-11-23 | 武汉工程大学 | A kind of water-cooled three screw tuner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489989B (en) * | 2015-12-24 | 2018-06-26 | 中国电子科技集团公司第五十四研究所 | A kind of large power waveguide electrically tunable filter |
-
2020
- 2020-07-16 CN CN202010685336.1A patent/CN111816967B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1200994A (en) * | 1968-05-17 | 1970-08-05 | Standard Telephones Cables Ltd | Temperature compensation of waveguide filters |
| CN1131826A (en) * | 1994-11-21 | 1996-09-25 | 日本电气株式会社 | Waveguide coaxial converter |
| CN205723894U (en) * | 2016-05-11 | 2016-11-23 | 武汉工程大学 | A kind of water-cooled three screw tuner |
Non-Patent Citations (1)
| Title |
|---|
| "三销钉调配器的研究";张少辉 等;《真空电子技术》;20170425;第25-28页 * |
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| CN111816967A (en) | 2020-10-23 |
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Effective date of registration: 20220804 Address after: 610000 No. 88 Tianchen Road, Chengdu high tech Zone (West District), Sichuan Patentee after: CHENGDU SAINAWEITE TECHNOLOGY CO.,LTD. Address before: 610000 No. 88 Tianchen Road, Chengdu high tech Zone (West District), Sichuan Patentee before: CHENGDU SAINA MICROWAVE TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20230403 Address after: 214000 No.1 Yulong Road, Jinzhangzhu Industrial Park, Zhangzhu Town, Yixing City, Wuxi City, Jiangsu Province (Guoshen Science and Technology Innovation Industrial Park) Patentee after: Wuxi Carbon Technology Co.,Ltd. Address before: 610000 No. 88 Tianchen Road, Chengdu high tech Zone (West District), Sichuan Patentee before: CHENGDU SAINAWEITE TECHNOLOGY CO.,LTD. |