CN110739513B - Ka frequency channel waveguide coaxial converter - Google Patents
Ka frequency channel waveguide coaxial converter Download PDFInfo
- Publication number
- CN110739513B CN110739513B CN201910969595.4A CN201910969595A CN110739513B CN 110739513 B CN110739513 B CN 110739513B CN 201910969595 A CN201910969595 A CN 201910969595A CN 110739513 B CN110739513 B CN 110739513B
- Authority
- CN
- China
- Prior art keywords
- waveguide
- groove
- upper cover
- boss
- transition structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
- H01P5/085—Coaxial-line/strip-line transitions
Landscapes
- Waveguide Aerials (AREA)
- Waveguide Connection Structure (AREA)
Abstract
The invention discloses a Ka frequency band waveguide coaxial converter which comprises a waveguide base, a waveguide upper cover and a K-type connector. The waveguide upper cover is fixed on the top surface of the waveguide base through a standard M1.6 inner hexagon screw, and the K-shaped connector is fixed on the top surface of the waveguide upper cover through a standard M2.5 screw. The top surface of the waveguide base and the bottom surface of the waveguide upper cover are respectively provided with a section of stepped transition structure, the two sections of stepped transition structures are not completely the same, and after the waveguide base and the waveguide upper cover are assembled, a transition structure from asymmetric double-ridge waveguide to rectangular waveguide is formed in the waveguide. The invention solves the problem of performance deterioration caused by errors in the production, processing and assembly processes of the conventional waveguide coaxial converter.
Description
Technical Field
The invention belongs to the communication technology, and particularly relates to a Ka frequency band waveguide coaxial converter.
Background
In the high-tech fields of modern satellite communication, interference, anti-interference and the like, the development of high-frequency and wide-band electronic systems is changing day by day. In the development process of these electronic systems, the implementation of the antenna feed system based on the waveguide structure is crucial, and they generally use the waveguide as an input/output port, while in the actual engineering, the feeder cable or the common measuring instruments such as vector network analyzer, spectrum analyzer, power amplifier, etc. mostly use the 50 Ω/75 Ω coaxial line as the input/output port, so the high-performance broadband coaxial waveguide converter becomes one of the key components for ensuring the normal operation of the electronic system.
At present, most of waveguide coaxial converters adopt a probe-coupled structure, such as the waveguide coaxial converters disclosed in patent document 1 (CN 201163656Y) and patent document 2 (CN 201332133Y), and the coaxial-to-waveguide transition is realized by adopting the probe-coupled structure. In actual machining and assembly, the extending length of the probe has a large influence on the final index, and the machining precision and the consistency of the probe during production are difficult to guarantee, so that the final result has large inconsistency.
Disclosure of Invention
The invention aims to provide a Ka frequency band waveguide coaxial converter, which solves the problem of performance deterioration caused by errors in the production, processing and assembly processes of the conventional waveguide coaxial converter.
The technical solution for realizing the purpose of the invention is as follows: a Ka frequency band waveguide coaxial converter comprises a waveguide base, a waveguide upper cover and a K-type connector. The waveguide upper cover is fixed on the top surface of the waveguide base through a standard M1.6 inner hexagon screw, and the K-shaped connector is fixed on the top surface of the waveguide upper cover through a standard M2.5 screw. The top surface of the waveguide base and the bottom surface of the waveguide upper cover are respectively provided with a section of stepped transition structure, the two sections of stepped transition structures are not completely the same, and after the waveguide base and the waveguide upper cover are assembled, a transition structure from asymmetric double-ridge waveguide to rectangular waveguide is formed in the waveguide.
Compared with the prior art, the invention has the remarkable advantages that:
(1) according to the invention, the two-section cylindrical air transition structure is adopted between the standard K-type connector and the interior of the waveguide, and compared with the prior art, the two-section cylindrical air transition structure can greatly reduce the influence of impedance transformation at the joint on the performance of the whole device.
(2) The invention adopts the mode of arranging the cylindrical groove at the corresponding position of the waveguide base, burying the conductive silver adhesive and drying to connect the K-shaped connector with the waveguide base, compared with the prior probe coupling technology, the performance is more stable, the consistency is better, the result difference caused by different extending lengths of the probes can not be caused, and simultaneously, the probe is fixed on the metal ladder because the high-frequency probe is thinner, thereby avoiding the influence of vibration on the probe.
(3) According to the waveguide structure, after the waveguide base and the waveguide upper cover are assembled, a transition structure from asymmetric double-ridge waveguides to rectangular waveguides is formed in the waveguide, and the transition step of the waveguide base is longer, so that the waveguide structure can be regarded as a novel transition structure from double-ridge waveguides to single-ridge waveguides to rectangular waveguides.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an embodiment of the Ka-band waveguide coaxial converter according to the present invention.
Fig. 2 is a three-dimensional view of the waveguide base structure of the present invention, wherein fig. (a) is a front view, fig. (b) is a left side view, and fig. (c) is a top view.
Fig. 3 is a dimensional view (side view) of the waveguide mount step of the present invention.
Fig. 4 is a dimensional view (top view) of the waveguide mount step of the present invention.
Fig. 5 is three views of the waveguide cover structure of the present invention, wherein fig. (a) is a front view, fig. (b) is a top view, fig. (c) is a left view, and fig. (d) is a bottom view.
Fig. 6 is a dimensional view (side view) of the waveguide cover step of the present invention.
Fig. 7 is a dimensional view (top view) of the waveguide cover step of the present invention.
Fig. 8 is a schematic structural diagram of the K-type connector of the present invention, wherein fig. (a) is a front view and fig. (b) is a top view.
FIG. 9 is a graph of the overall simulated VSWR according to an embodiment of the present invention.
Fig. 10 is an overall simulation insertion loss diagram according to an embodiment of the present invention.
Fig. 11 is a sectional view of the Ka-band waveguide coaxial converter of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
it should be noted that the structures, proportions, sizes, and the like shown in the drawings are only for the purpose of matching the disclosure disclosed in the specification, and are not intended to limit the practical limitations of the present invention, and any modifications of the structures, changes of the proportions, or adjustments of the sizes, without affecting the efficacy and achievable purposes of the present invention, should fall within the scope of the present disclosure.
With reference to fig. 1 and 11, a Ka-band waveguide coaxial converter includes a waveguide base 1, a waveguide cover 2, and a K-type connector 3. The waveguide upper cover 2 is fixed on the top surface of the waveguide base 1 through a standard M1.6 hexagon socket head cap screw, and the K-shaped connector 3 is fixed on the top surface of the waveguide upper cover 2 through a standard M2.5 screw.
Combine fig. 5, waveguide upper cover 2 is the cuboid, the area of top surface and bottom surface is the biggest, it has a first logical groove to open along width direction at its top surface, first logical groove one side forms first waveguide flange, the opposite side forms first boss, first boss top surface is opened along its width direction has a first recess, bottom surface at waveguide upper cover 2 is equipped with the cascaded excessive structure of four steps from first boss to first waveguide flange direction, the ladder height that is close to first waveguide flange direction is the shortest, be equipped with a second boss on the highest ladder of height, first recess center is opened downwards has two sections round holes to run through the highest ladder of height and second boss, constitute two sections cylinder air excessive structure. Wherein the first air cylinder is adjacent the first recess and the second air cylinder is adjacent the highest step.
The width W =2.6mm of the four-step transition structure is proportional to the wavelength at the central frequency of the Ka band.
The diameter of the first air cylinder is 0.8mm, and the height of the first air cylinder is 1.3 mm; the second air cylinder has a diameter of 0.7mm and a height of 1.29 mm. The total height of the two air cylinders depends on the depth of the first groove, and the heights of the two air cylinders are approximately consistent. The diameter of the second air cylinder is equal to approximately 2.3 times the diameter of the coaxial connector probe used, and the diameter of the K-type connector probe used in embodiments of the present invention is 0.3mm, so 0.7mm is selected for the diameter of the second air cylinder. And when the diameter of the first air cylinder is slightly larger than that of the second air cylinder, better broadband matching can be achieved, so that the performance is better than that of a common direct probe coupling transition structure or a transition-free structure, and therefore, the diameter of the first air cylinder is selected to be 0.8mm in the embodiment of the invention.
The second boss is the cuboid, and width and length all are less than the width and the length of the highest ladder of height.
The circular hole is positioned on the central axis of the waveguide upper cover 2 in the length direction, and the length of the waveguide upper cover 2 is setLThe distance between the center of the circular hole and the nearest width edge is 7.5-7.6mmLWhile varying, the range can be adjusted appropriately to achieve optimum performance, with 7.54mm being selected for use in embodiments of the invention.
Referring to fig. 2, the waveguide base 1 is a cuboid, the length and the width of the waveguide base are matched with those of the waveguide upper cover 2, a second through groove is formed in the bottom surface of the waveguide base from one end to the other end to form a second waveguide flange, the first waveguide flange and the second waveguide flange are matched and used for connecting a waveguide or another Ka-band waveguide coaxial converter, a second groove is formed in the top surface of the waveguide base 1 from the second waveguide flange to the other side, a five-step transition structure is arranged in the second groove, the step close to the second waveguide flange is the shortest in height, the step farthest from the second waveguide flange is the highest in height, the step with the highest height is tightly attached to the closed end of the second groove and is smaller than the top surface of the closed end, a third boss is arranged on the step with the highest height, a cylindrical groove is formed downwards from the top surface of the third boss, and is concentric with the air transition structures of the two cylindrical grooves, the fourth step type transition structure of the waveguide upper cover 2 is matched with the fifth step type transition structure of the waveguide base 1, a step type gap (namely the transition structure from the asymmetric double-ridge waveguide to the rectangular waveguide) is formed at the step surface, the second boss and the third boss are partially staggered, and a gap is reserved between the second boss and the third boss.
The width of the second groove was 7.12mm and the depth 3.56mm, matching the groove width and depth of a standard WR28 rectangular waveguide.
The width of the five-step transition structure is the same as that of the four-step transition structure, the length of the five-step transition structure is longer than that of the four-step transition structure, and the five-step transition structure of the waveguide base 1 is longer, so that the waveguide base can be regarded as a novel transition structure from a double-ridge waveguide to a single-ridge waveguide to a rectangular waveguide.
Referring to fig. 8, the K-type connector 3 is fixed in the first groove, the probe of the K-type connector extends into the two sections of cylindrical air transition structures, a gap is left between the two sections of cylindrical air transition structures, and the K-type connector 3 is fixedly connected with the waveguide base 1 in the cylindrical groove in a drying mode after the conductive silver adhesive is buried.
Example 1
Fig. 1 shows the overall effect diagram implemented according to the present invention, in which a K-type connector 3 is fastened to a waveguide upper cover 2 by a standard M2.5 screw, conductive silver paste is filled in a hole on a step of a waveguide base 1, and finally the waveguide base 1 and the waveguide upper cover 2 are fastened by a standard M1.6 socket head cap screw and then placed in an oven for drying.
With reference to fig. 3 and 4, the dimensions therein are d0=0.92mm, L0=3.44mm, h0=0.32mm, L1=1.54mm, h1=0.29mm, L2=1.43mm, h2=0.24mm, L3=1.4mm, h3=0.17mm, L4=1.42mm, h4=0.39mm, L5=2.67mm, h5=0.2mm, W =2.6mm, W0=2.22mm, X =0.19mm, a =1.11mm, b =1.82mm, d =0.4mm, and the hole depth is 0.5mm, respectively.
With reference to fig. 6 and 7, the dimensions therein are d1=0.95mm, L6=3.49mm, h6=0.28mm, L7=0.69mm, h7=0.08mm, L8=1.35mm, h8=0.29mm, L9=1.5mm, h9=0.25mm, L10=1.42mm, h10=0.18mm, L11=2.4mm, h11=0.21mm, W1=2.26mm, Y =0.17mm, a1=1.13mm, b1=1.9mm, d2=0.7mm, respectively.
A simulation result diagram of the waveguide coaxial converter is shown in the figure, wherein fig. 9 shows the standing-wave ratio of the structure, and the standing-wave ratio is less than 1.05 in the Ka full frequency band; fig. 10 shows the insertion loss of the structure, which is less than 0.1dB in all Ka bands. At present, the average level of standing-wave ratio in Ka full frequency band is less than 1.3, the insertion loss is less than 0.5dB, and the indexes of the invention are all superior to the current level. And the invention does not need to rely on the position of the probe structurally, only need the precision that the control machine is processed to realize excellent performance.
Those skilled in the art will appreciate that the details of the invention not described in detail in this specification are well within the skill of those skilled in the art.
Claims (8)
1. A Ka-band waveguide coaxial converter comprises,
comprises a waveguide base (1) which is a cuboid;
the waveguide upper cover (2) is a cuboid and is fixed on the top surface of the waveguide base (1);
the K-type connector (3) is fixed on the top surface of the waveguide upper cover (2);
the method is characterized in that:
the top surface of the waveguide base (1) and the bottom surface of the waveguide upper cover (2) are respectively provided with a section of stepped transition structure, the two sections of stepped transition structures are not completely the same, and after the waveguide base (1) and the waveguide upper cover (2) are assembled, the interior of the waveguide forms a transition structure from asymmetric double-ridge waveguide to rectangular waveguide;
the waveguide upper cover (2) is provided with a first through groove along the width direction on the top surface, a first waveguide flange is formed on one side of the first through groove, a first boss is formed on the other side of the first through groove, a first groove is formed on the top surface of the first boss along the width direction, a four-step transition structure is arranged on the bottom surface of the waveguide upper cover (2) from the first boss to the first waveguide flange, the step close to the first waveguide flange is the shortest in height, a second boss is arranged on the step with the highest height, and the center of the first groove is downwards provided with two sections of circular holes, a step with the highest penetration height and a second boss to form a two-section cylindrical air transition structure;
a second through groove is formed in the bottom surface of the waveguide base (1) from one end to the other end to form a second waveguide flange, the first waveguide flange and the second waveguide flange are matched and used for connecting a waveguide or another Ka-band waveguide coaxial converter, a second groove is formed in the top surface of the waveguide base (1) from the second waveguide flange to the other side, a five-step type transition structure is arranged in the second groove, the step close to the second waveguide flange is the shortest in height, the step farthest from the second waveguide flange is the highest in height, the step with the highest height is tightly attached to the closed end of the second groove and is smaller than the height of the top surface of the closed end, a third boss is arranged on the step with the highest height, a cylindrical groove is formed in the downward direction of the top surface of the third boss, the cylindrical groove is concentric with the air transition structures of the two sections of cylinders, and the four-step type transition structure of the waveguide upper cover (2) is matched with the five-step type transition structure of the waveguide base (1), and a transition structure from asymmetric double-ridge waveguide to rectangular waveguide is formed on the step surface, the second boss and the third boss are locally staggered, and a gap is reserved between the second boss and the third boss.
2. The Ka band waveguide coaxial converter of claim 1, wherein: the width W =2.6mm of the four-step transition structure is proportional to the wavelength at the central frequency of the Ka band.
3. The Ka band waveguide coaxial converter of claim 1, wherein: in the air transition structure of the two sections of cylinders, a first air cylinder is close to the first groove, a second air cylinder is close to the highest step, the diameter of the first air cylinder is 0.8mm, and the height of the first air cylinder is 1.3 mm; the second air cylinder has a diameter of 0.7mm and a height of 1.29 mm.
4. The Ka band waveguide coaxial converter of claim 1, wherein: the second boss is the cuboid, and width and length all are less than the width and the length of the highest ladder of height.
5. The Ka band waveguide coaxial converter of claim 1, wherein: the round hole is positioned on the central axis of the waveguide upper cover (2) in the length direction and is provided with the length of the waveguide upper cover (2)LThe distance between the center of the circular hole and the nearest width edge is 7.5-7.6mmLWhile varying, the range can be adjusted appropriately to achieve optimum performance, with 7.54mm being selected for use in embodiments of the invention.
6. The Ka band waveguide coaxial converter of claim 1, wherein: the width of the five-step transition structure is the same as that of the four-step transition structure, and the length of the five-step transition structure is longer than that of the four-step transition structure.
7. The Ka band waveguide coaxial converter of claim 1, wherein: the width of the second groove was 7.12mm and the depth 3.56mm, matching the groove width and depth of a standard WR28 rectangular waveguide.
8. The Ka band waveguide coaxial converter of claim 1, wherein: the K-type connector (3) is fixed in the first groove, a probe of the K-type connector extends into the two sections of cylindrical air transition structures, a gap is reserved between the two sections of cylindrical air transition structures, and the K-type connector (3) is fixedly connected with the waveguide base (1) in the cylindrical groove in a drying mode after conductive silver adhesive is buried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910969595.4A CN110739513B (en) | 2019-10-12 | 2019-10-12 | Ka frequency channel waveguide coaxial converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910969595.4A CN110739513B (en) | 2019-10-12 | 2019-10-12 | Ka frequency channel waveguide coaxial converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110739513A CN110739513A (en) | 2020-01-31 |
| CN110739513B true CN110739513B (en) | 2021-08-31 |
Family
ID=69269924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910969595.4A Active CN110739513B (en) | 2019-10-12 | 2019-10-12 | Ka frequency channel waveguide coaxial converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110739513B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3955376A1 (en) * | 2020-08-12 | 2022-02-16 | VEGA Grieshaber KG | Waveguide coupling device for a radar sensor |
| CN113097676B (en) * | 2021-03-25 | 2022-03-29 | 广东省蓝波湾智能科技有限公司 | Waveguide coaxial converter |
| CN113346212B (en) * | 2021-06-24 | 2022-07-19 | 中国电子科技集团公司第十二研究所 | Transition waveguide |
| CN114113691A (en) * | 2021-11-24 | 2022-03-01 | 电子科技大学 | Waveguide port test fixture capable of realizing calibration and de-embedding technology |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002026618A (en) * | 2000-07-12 | 2002-01-25 | Kyocera Corp | Package for housing semiconductor element |
| CN101604782A (en) * | 2009-05-12 | 2009-12-16 | 成都赛纳赛德科技有限公司 | The high band broadband is coaxial-the waveguide adapter |
| CN102509832A (en) * | 2011-10-13 | 2012-06-20 | 中国兵器工业第二〇六研究所 | Axial broadband waveguide coaxial converter |
| CN204144412U (en) * | 2014-09-01 | 2015-02-04 | 无锡华测电子系统有限公司 | The non-standard waveguide of a kind of millimeter wave is to standard waveguide adapter |
| CN204834817U (en) * | 2015-08-14 | 2015-12-02 | 成都信息工程大学 | Coaxial converter of broadband waveguide |
| CN206148596U (en) * | 2016-08-30 | 2017-05-03 | 北京星英联微波科技有限责任公司 | Standing wave waveguide coaxial convertion ware is hanged down to broadband |
| CN206480744U (en) * | 2017-02-09 | 2017-09-08 | 南京广顺电子技术研究所 | Double ridged waveguide coaxial converter |
| CN207624885U (en) * | 2017-12-15 | 2018-07-17 | 深圳市大富科技股份有限公司 | Communication radio frequency equipment and its waveguide coaxial converter |
-
2019
- 2019-10-12 CN CN201910969595.4A patent/CN110739513B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110739513A (en) | 2020-01-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110739513B (en) | Ka frequency channel waveguide coaxial converter | |
| US7262672B2 (en) | Coaxial connector and connection structure including the same | |
| CN110739515B (en) | Converter for transition from Ku waveband coaxial waveguide to rectangular waveguide | |
| CN111063975B (en) | Ka-band GYSEL power divider based on ridge gap waveguide | |
| CN110212273B (en) | Dual-band duplexer based on substrate integrated waveguide | |
| CN204834816U (en) | Millimeter waveguide microstrip conversion equipment | |
| CN109742495B (en) | Compact high-roll-off wide-stop-band low-pass filter | |
| CN107275735B (en) | Novel coaxial microstrip converter | |
| AU2020100572A4 (en) | Board-to-board radio-frequency connector | |
| CN106654484A (en) | Broadband high-suppression-degree waveguide filter | |
| CN210926267U (en) | Novel stripline-to-coaxial vertical conversion structure | |
| CN210403998U (en) | Ware is divided to merit of 3.5GHz frequency channel | |
| CN111029705A (en) | Single-layer plane broadband hybrid ring coupler based on short-circuit multi-wire coupling branch | |
| JP7129263B2 (en) | converter | |
| CN202839924U (en) | Coaxial fixed attenuator with high frequency of 40 Ghz | |
| CN215184483U (en) | Box body and power amplifier comprising same and used for coaxial conversion of Ka frequency band waveguide | |
| KR101713769B1 (en) | Spatial power combiner based on coaxial waveguide | |
| CN111725597B (en) | Dielectric transmission line coupler, dielectric transmission line coupling assembly and network equipment | |
| CN208256990U (en) | A kind of spring self-lock formula radio frequency (RF) coaxial connector | |
| CN112713378A (en) | Ultra-wideband miniaturized power divider, design method and multi-channel communication network terminal | |
| CN110429361B (en) | Dual-mode dual-frequency coaxial cavity filter | |
| KR200381659Y1 (en) | Wide-band directional coupler | |
| CN114039183B (en) | Coplanar waveguide-rectangular waveguide converter | |
| CN113708036B (en) | Signal transmission assembly | |
| WO2022001914A1 (en) | Coupler, transceiver module, and communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Sun Linlin Inventor after: Zhang Haozhe Inventor after: Li Ping Inventor before: Zhang Haozhe Inventor before: Li Ping |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |