CN1491457A - Coupling structure for SMA connector-NRD guide - Google Patents
Coupling structure for SMA connector-NRD guide Download PDFInfo
- Publication number
- CN1491457A CN1491457A CNA02805010XA CN02805010A CN1491457A CN 1491457 A CN1491457 A CN 1491457A CN A02805010X A CNA02805010X A CN A02805010XA CN 02805010 A CN02805010 A CN 02805010A CN 1491457 A CN1491457 A CN 1491457A
- Authority
- CN
- China
- Prior art keywords
- nrd
- sma connector
- pipeline
- waveguide
- nrd waveguide
- 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.)
- Pending
Links
- 230000008878 coupling Effects 0.000 title abstract 2
- 238000010168 coupling process Methods 0.000 title abstract 2
- 238000005859 coupling reaction Methods 0.000 title abstract 2
- 230000001629 suppression Effects 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 230000005672 electromagnetic field Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
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
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- 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
- H01P5/10—Coupling devices of the waveguide type for linking dissimilar lines or devices for coupling balanced lines or devices with unbalanced lines or devices
- H01P5/1022—Transitions to dielectric waveguide
Landscapes
- Waveguides (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The present invention is to feed the millimeter wave input from an SMA connector to a non-radiative dielectric waveguide ('NRD guide').The present invention provides a coupling structure of an SMA connector and an NRD guide conversion mode, which uses a semi-rigid in order to propagate millimeter wave or microwave from the SMA connector to the NRD guide, connects the SMA connector and the NRD guide with the semi-rigid and includes a mode suppressor in order to suppress unnecessary modes.
Description
Technical field
The invention provides and a kind ofly can be used in the above high-frequency range of 30GHz and be used for circuit in the frequency range that other expectations obtain, it uses a pipeline with the electric bridge form that a NRD (nonradiative dielectric waveguide) waveguide is connected with the SMA connector and realizes by suppressing unnecessary pattern at mode suppression device of NRD waveguide middle part insertion.
Background technology
Modern society is an information-intensive society, and is very strong to the requirement of high power capacity communication.We can find frequent computer network test and practice often, resemble high speed information transmission, video conference etc.In the optical communication field, large-scale communication is along with the development of optical fiber and semiconductor laser technique is put into effect, that is to say, in field of wireless communication, large-scale communication along with the communication apparatus of small-sized, light, high reliability in the application of millimeter wave band or pseudo millimeteric wave section and become possibility.
The NRD waveguide, it is compared with microstrip, and is radiationless, loss is little; It is compared with waveguide, and the assembly of transmission line and circuit is simpler.Rely on these high-quality characteristics, along with the development of communication apparatus, also active further in recent years to the developmental research of NRD waveguide.The NRD waveguide has caused popular extensive interest as a kind of transmission line and circuit element in millimere-wave band.Yet, according to the MMIC method of NRD wave guide principles, under the 50GHz available frequency range, owing to reduce at the wavelength of millimeter wave band, the massive losses that every 1m causes 60dB can appear.Therefore, use the MMIC method to be difficult under the high frequency situations and make up circuit.
Disclosure of the Invention
The present invention is connected a NRD waveguide by the pipeline that has the electric bridge form with a SMA connector, and suppress unnecessary pattern by insert a mode suppression device at NRD waveguide middle part, provide a kind of and can be used in the above high-frequency range of 30GHz and be used for the interior circuit of frequency range that other expectations obtain
The present invention is suitable for being applied in the frequency range of 10GHz most, also is fit to be applied to other frequency ranges.
Description of drawings
Fig. 1 is among the optimum embodiment of the present invention, the perspective view of SMA connector-NRD waveguide integrated structure, and wherein, millimeter wave is by SMA connector input NRD waveguide;
Fig. 2 is the distribution diagram of electromagnetic field between NRD waveguide and pipeline, and wherein, pipeline is between the levels conductive plate;
Fig. 3 is the sectional view of Figure 1A-A direction, and the A-A direction is vertical with pipeline among Fig. 1;
Fig. 4 is the sectional view of NRD waveguide B-B direction among Fig. 1, and wherein, the B-B direction is parallel with the levels conductive plate;
Fig. 5 is in the second embodiment of the invention, the perspective view of SMA connector-NRD waveguide combining structure, and wherein, a mode suppression device is inserted in the NRD waveguide middle part that the described cutting of the optimum embodiment of the present invention is opened;
Fig. 6 is the sectional view of Fig. 5 in the C-C direction, and wherein, the C-C direction is vertical with pipeline among Fig. 5;
Fig. 7 be NRD waveguide among Fig. 5 at the sectional view of D-D direction, wherein, the D-D direction is parallel to the levels conductive plate;
Fig. 8 is the decomposition section of mode suppression device, and wherein, the mode suppression device is inserted in the NRD waveguide middle part of Fig. 5;
Fig. 9 is the VSWR property list of SMA connector-NRD waveguide combining structure shown in Figure 8, and wherein, VSWR depends on the distance between NRD waveguide end and the pipeline, and is inserted in the length (t) of the part pipeline in the NRD waveguide corresponding to pipeline;
Figure 10 is the VSWR property list, and wherein, VSWR depends on the length (t) of the part pipeline that is inserted in the NRD waveguide.
The code description of vitals in the chart
1 is the upper strata conductive plate
2 is lower floor's conductive plate
3 is the NRD waveguide
4 is the SMA connector
5 is pipeline
6 is the fixing metal face
7 is flagpole antenna
8 is the mould inhibitor
9 is metal (copper) film
10 are thin special teflon
T is the length of pipeline (conductor), and it is inserted in the NRD waveguide
W is the diameter of pipeline
Embodiment
The perspective view of the combining structure of SMA connector-NRD waveguide as shown in Figure 1, wherein, microwave and millimeter wave are input to SMA connector 4, then with its input NRD waveguide 3.Be imported into the ripple of SMA connector 4, pipeline 5 transmission along connecting SMA connector 4 and NRD waveguide 3 are transferred to NRD waveguide 3 then.The ripple of input radiate by flagpole antenna 7 after being sent to NRD waveguide 3.
The perspective view of the combining structure of SMA conveyer-NRD waveguide as shown in Figure 5, pipeline 5 plays a part shown in Figure 1ly among the figure, inserts a mode suppression device 8 at the NRD of cutting waveguide 3 middle parts to suppress unnecessary pattern in the incoming wave.
Fig. 2 represents that electromagnetic field is in NRD waveguide 3 be positioned at distribution condition between the pipeline 5 between the levels conductive plate 1,2.According to specific frequency, should keep specific distance between the levels conductive plate.Electromagnetic field shows as LSM pattern and LSE pattern in NRD waveguide 3, on the other hand, electromagnetic field shows as TE pattern and TM pattern in pipeline.
On/lower floor's conductive plate 1,2 has with ripple and is connected, and the ripple that transmits in pipeline is the TEM pattern, and electric field is along Y direction, and the magnetic field in the plane of Y=length/2 is along X-direction, therefore, NRD waveguide 3 can be connected with pipeline 5.
VSWR in following condition, can obtain minimum value 1.12 under the frequency range of 10GHz: as shown in Figure 3 and Figure 4, it is dark that pipeline 5 is inserted into NRD waveguide 3 to 2mm, and pipeline road along the line orientation is far away apart from the terminal 5mm of NRD waveguide; Space between the levels conductive plate is 12.2mm; The dielectric constant of NRD waveguide 3 is 2.56, and width is 10.5mm; The diameter of pipeline is 3mm.Can find: the degree of depth t to the distance (5mm) of NRD waveguide 3 ends and pipeline 5 insertion NRD waveguides 3 is very little to its influence.On the other hand, efficiency of transmission can obtain by the diameter of adjusting pipeline 5 to improve.
As shown in Figure 5, in second embodiment of the invention, NRD waveguide 3 is by cutting, and a mode suppression device 8 is plugged in the NRD waveguide 3, its effect is by suppressing the unnecessary pattern that NRD waveguide 3 produces, making the LSM mode wave of importing from pipeline 5 transmit smoothly.As shown in Figure 8, mode suppression device 8 has a metallic film 9 that is λ/4 chokes shapes at thin 10 devices of special teflon, and the gap of metallic film 9 grooves is 4mm, is equivalent to the length of λ/4, and w1 is 2mm.W2 is 12mm.In second embodiment of the invention.By plant mode suppression device 8, the unnecessary pattern that is produced by the NRD waveguide in the 10GHz frequency range can be inhibited.
As shown in Figure 9, the VSWR characteristic depends on the distance between NRD waveguide end and the pipeline 5, and is inserted in the length (t) of the part pipeline in the NRD waveguide corresponding to pipeline.When the distance that is positioned at NRD waveguide 3 ends when pipeline 5 was 5mm, the VSWR characteristic was normally lower.When the length t of pipeline 5 insertion NRD waveguides was 2mm, the VSWR characteristic was best.
VSWR performance plot as shown in figure 10, it depends on the length (t) of the part pipeline that is inserted in the NRD waveguide.As shown in Figure 9, when length t was 2mm, the VSWR characteristic was minimum.
Industrial applicibility
Explain as front, the present invention connects SMA connector and NRD waveguide by pipeline 3, with The time by in the NRD of cutting waveguide plant mode suppression device 8, can effectively suppress the NRD ripple Unnecessary pattern in leading.
That is to say, according to the present invention, can in correlation technique, pass at the millimeter wave section with coaxial cable Defeated microwave and ripple. Furtherly, the diameter of pipeline is more little, and the efficient that suppresses unnecessary pattern is more high. Therefore, by regulating the diameter of pipeline, can low-loss ground transmission wave in required frequency range.
Aforesaid embodiments of the invention and advantage only are to the concrete a kind of narration implemented of the present invention, can not be considered as the restriction to range of application of the present invention.The present invention can be applied to the training equipment of other types easily.The description of this invention only is a kind of illustrative explanation, rather than to the restriction of interest field of the present invention.For the those skilled in the art in present technique field, can easy to do discovery equivalent technologies of the present invention, correction technique and deformation technology.So our claim wishes to contain the technique device of the described invention function of above-mentioned realization, be not only structural equivalent, also comprise equivalent configurations.
Claims (4)
- The coupled structure of 1 one kinds of SMA connector-NRD waveguides, it is used for the microwave and the millimeter wave of input SMA connector are transferred to the NRD waveguide, and therein, the SMA connector is connected by pipeline (5) with the NRD waveguide; The NRD waveguide is inserted a mode suppression device by cutting at the NRD of cutting waveguide middle part.
- The coupled structure of 2 SMA connector according to claim 1-NRD waveguides therein, can be controlled required frequency range by the diameter of adjusting pipeline.
- The coupled structure of 3 SMA connector according to claim 1-NRD waveguides, therein, described SMA connector is connected by pipeline (5) with the NRD waveguide.
- The coupled structure of 4 SMA connector according to claim 1-NRD waveguides, therein, described NRD waveguide is inserted a mode suppression device by cutting at the NRD of cutting waveguide middle part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2001/0008338 | 2001-02-20 | ||
| KR1020010008338A KR100358979B1 (en) | 2001-02-20 | 2001-02-20 | Coupling Structure for SMA Connector -NRD Guide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1491457A true CN1491457A (en) | 2004-04-21 |
Family
ID=19705984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA02805010XA Pending CN1491457A (en) | 2001-02-20 | 2002-02-07 | Coupling structure for SMA connector-NRD guide |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR100358979B1 (en) |
| CN (1) | CN1491457A (en) |
| WO (1) | WO2002067366A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064852A (en) * | 2013-03-19 | 2014-09-24 | 德克萨斯仪器股份有限公司 | Horn antenna for transmitting electromagnetic signals from a microstrip line to a dielectric waveguide |
| CN108172962A (en) * | 2017-12-21 | 2018-06-15 | 电子科技大学 | A kind of broadband circular waveguide directional coupler for microwave power measurement |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040041565A (en) * | 2004-04-27 | 2004-05-17 | 엔알디테크 주식회사 | NRD Guide Strip Line Converter |
| KR100725445B1 (en) * | 2004-09-07 | 2007-06-12 | 엔알디테크 주식회사 | NRD guide-Microstrip line Transition |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0738312A (en) * | 1993-07-16 | 1995-02-07 | Japan Energy Corp | Manufacture of millimeter wave device |
| JPH09219601A (en) * | 1996-02-14 | 1997-08-19 | Nissan Motor Co Ltd | Connection/installation structure of diode mounted substrate in nrd guide diode circuit |
| JP3869131B2 (en) * | 1998-10-08 | 2007-01-17 | 新日本無線株式会社 | NRD guide gun oscillator |
| JP3760051B2 (en) * | 1998-08-04 | 2006-03-29 | シャープ株式会社 | Frequency adjusting device for NRD guide millimeter wave oscillator |
-
2001
- 2001-02-20 KR KR1020010008338A patent/KR100358979B1/en not_active IP Right Cessation
-
2002
- 2002-02-07 CN CNA02805010XA patent/CN1491457A/en active Pending
- 2002-02-07 WO PCT/KR2002/000196 patent/WO2002067366A1/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064852A (en) * | 2013-03-19 | 2014-09-24 | 德克萨斯仪器股份有限公司 | Horn antenna for transmitting electromagnetic signals from a microstrip line to a dielectric waveguide |
| CN108172962A (en) * | 2017-12-21 | 2018-06-15 | 电子科技大学 | A kind of broadband circular waveguide directional coupler for microwave power measurement |
| CN108172962B (en) * | 2017-12-21 | 2021-03-26 | 电子科技大学 | Broadband circular waveguide directional coupler for microwave power measurement |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002067366A1 (en) | 2002-08-29 |
| KR20010044427A (en) | 2001-06-05 |
| KR100358979B1 (en) | 2002-11-01 |
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| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |