CN107689473A - A kind of waveguide detection unit of magnetic pumping coupling mechanism - Google Patents
A kind of waveguide detection unit of magnetic pumping coupling mechanism Download PDFInfo
- Publication number
- CN107689473A CN107689473A CN201710680324.8A CN201710680324A CN107689473A CN 107689473 A CN107689473 A CN 107689473A CN 201710680324 A CN201710680324 A CN 201710680324A CN 107689473 A CN107689473 A CN 107689473A
- Authority
- CN
- China
- Prior art keywords
- waveguide
- magnetic pumping
- coupling mechanism
- detection unit
- magnetic
- 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.)
- Granted
Links
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
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
- H01P5/181—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers the guides being hollow waveguides
Landscapes
- Measuring Magnetic Variables (AREA)
- Waveguides (AREA)
Abstract
The present invention relates to a kind of waveguide detection unit of magnetic pumping coupling mechanism of microwave technical field, solve that existing waveguide coupling geophone volume weight is big, is difficult to integrate, the problems such as waveguide cavity needs special process to handle.The present invention replaces traditional electric field excitation to couple to realize the power monitoring to dominant waveguide mode using magnetic pumping coupling mechanism；Coaxial probe is replaced using plane probe ring, wave detector thickness can be greatly reduced；The metal package structure of discrete device is replaced using LTCC (LTCC) integrated molding structure.Physical dimension of the present invention is small, weight is low, ceramic monolithic structure without special surface processing and is easily integrated, suitable for miniaturization, highly integrated microwave and millimeter wave detecting circuit and system.
Description
Technical field
The present invention relates to the circuit arrangement for being used for microwave power monitoring in microwave circuit and system, and in particular to a kind of waveguide
Couple detection unit
Technical background
In recent years, with the rapid development of mobile communication, satellite communication and Radar Technology, increasing New technical use
In consumer level market, ever-increasing user's request brings the data bandwidth expansion of explosion type, advances existing communication equipment
The lifting of working frequency, for satellite communication, main flow, following 5G mobile communication are stepped into Ka frequency range broadband applications gradually
Also millimeter wave frequency band has been aimed at.
For millimeter-wave signal transmission, with the raising of working frequency and power, the interconnection for reducing each equipment room is damaged
Consumption is particularly important.Waveguide interconnection as hyperfrequency interconnection most important dependence, with insertion loss is low, stability is high, into
This low advantage.Waveguide coupling geophone is as a kind of waveguide device, it is possible to achieve and the low-loss of millimeter-wave signal monitors in real time,
Facilitate the debugging and maintenance of millimetre-wave circuit and system, be widely used in power amplification circuit monitoring and automatic growth control electricity
Road.
Conventional waveguide coupling detection unit is mostly based on two kinds of working methods, and one kind is directional couple detection, and one kind is spy
Pin direct-coupling detection.Waveguide main path signal is coupled to by the first detecting way by a certain percentage using low loss directional coupler
Output end, then detection output is carried out to coupled signal, because directional coupler minor matters length depends on quarter-wave, it is based on
Often volume weight is big for the waveguide wave detector that this method is realized, it is difficult to be integrated with existing equipment；Probe coupling detecting method be by
Coaxial feeder, which extends to, forms electric field excitation probe in rectangular waveguide, realize that certain power proportions export by adjusting probe location
Detection.But this method needs the independent matched use of coaxial wave detector, simultaneously because the limitation of coaxial configuration, it is difficult to realize
Miniaturization Design.For the highly integrated millimeter-wave systems application of lightweight, above two waveguide wave detector can not take into account performance with
Volume weight.
The content of the invention
The problem of being difficult to overcome for existing waveguide wave detector, the invention provides a kind of based on magnetic pumping coupling mechanism
Card form waveguide detection unit.
A kind of waveguide detection unit of magnetic pumping coupling mechanism, including detector circuit, it is characterised in that：Also include being used for
Encapsulate the LTCC encapsulating structure of detector circuit；Described LTCC encapsulating structure includes substrate and opened up
Square wave guide cavity in substrate, square wave guide cavity is surrounded in two sides of substrate, be respectively printed with a ground plane, two
Interconnected between ground plane by conductive through hole；Described detector circuit include magnetic field excitation coupling probe, impedance transformer and
Detection chip；Magnetic field excitation coupling probe is placed in the narrow side side of square wave guide cavity, magnetic pumping ring one for magnetic pumping ring structure
End is connected with ground plane, and the other end is connected with the magnetic pumping signal input part of impedance transformer.
Further, circuit unit chamber is also opened up in substrate, impedance transformer and detection chip are placed in circuit unit chamber
It is interior.
Further, described magnetic pumping structure is annular.
Described circuit unit chamber is blind chamber, and screening cover is configured with the aperture position of blind chamber.
Compared with the prior art, tool has the advantage that the present invention：Swashed using plane probe magnetic field excitation instead of coaxial electric field
Encourage, substantially reduce the thickness of waveguide wave detector；Detector circuit is embedded in wave guide wall, waveguide wave detector is improved and integrates
Degree；LTCC integrative packagings realize wave-guide cavity wave structure and encapsulating structure simultaneously, are substantially reduced using ceramics instead of metal
The volume weight of waveguide wave detector.The waveguide wave detector thickness designed using the present invention is less than 5mm, and weight is less than 20g, and contrast is normal
Waveguide wave detector is advised, thickness and weight can reduce by more than 5 times, and without carrying out special process processing to metal wave guide cavity, be easy to
Assembling is integrated.
Brief description of the drawings
Fig. 1 is the planar structure schematic diagram of present example；
Fig. 2 is the stereochemical structure view of present example；
Fig. 3 is the detecting circuit figure in present example；
Fig. 4 is the fundamental diagram of magnetic field excitation coupling probe in present example；
Fig. 5 is present example middle impedance converter circuit figure.
Embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail.
Fig. 1,2,3 are embodiments of the invention.Card form waveguide inspection proposed by the present invention based on magnetic pumping coupling mechanism
Ripple unit is by the detecting circuit 1 based on magnetic pumping coupling mechanism, and for encapsulating the LTCC of detector circuit
(LTCC) encapsulating structure 2 forms；Described detector circuit 1 is mainly by magnetic field excitation coupling probe 3, impedance transformer 4, detection
Chip 5 forms；Described LTCC encapsulating structure 2 is mainly made up of ltcc substrate 10, connector 11, screening cover 12；
Described ltcc substrate 10 includes square wave guide cavity 13 and circuit unit chamber 14；Probe 3 in described detecting circuit 1 is located at
In the square wave guide cavity 13 of ltcc substrate 10, remaining circuit component is located at the circuit unit chamber of ltcc substrate 10 in detecting circuit 1
In 14.
Card form waveguide detection unit of the present invention is embedded into waveguide transmission system to be measured by positioning fixing hole 16
In.Square wave guide cavity 13 is the low damage transmission path of signal in Fig. 2, and waveguide cavity 13 can be used at Common platings or slurry coating processes
Reason, low-loss interconnection and shielding are realized in intracavitary.In two sides of ltcc substrate 10, around waveguide cavity 13, one is respectively printed with
Individual ground plane 15, interconnected by conductive through hole between two ground planes.Magnetic field excitation coupling probe 3 is placed in waveguide cavity 13,
And required signal is therefrom coupled out, coupled signal completes signal demodulator by the feed-in detection chip 5 of impedance transformer 4, most
Whole rectified signal exports via connector 11.
For the magnetic field excitation coupling probe 3 in specific implementation example, its operation principle can be illustrated by Fig. 4.Square in figure
The height of shape waveguide cavity 13 is b, and for square wave guide cavity, it is TE that it, which transmits main mould,10Cross star 17 in mould, Distribution of Magnetic Field such as Fig. 4
It is shown.Magnetic field excitation coupling probe 3 is realized in the form of magnetic pumping ring, is placed in the narrow side side of waveguide cavity, and its one end is grounded,
One end connects with rear end detecting circuit.Because magnetic pumping ring is perpendicular to magnetic direction, the magnetic field of alternation can in magnetic pumping ring shape
Into induced-current i, and its alternating electric field is perpendicular to the alternating magnetic field direction of waveguide.Magnetic field excitation coupling probe 3 shown in Fig. 4 can
To be printed on using low-loss slurry on ltcc substrate 10, it can realize that probe couples with radius r by changing its line thickness
The regulation of coefficient and working frequency.
For rectangular waveguide main mould TE10Mould, its wave impedance can be expressed as：
Wherein k0For wave number, η0For vacuum wave resistance, β is phase coefficient., can be with for above-mentioned magnetic field excitation coupling probe 3
Regard a micro-loop antenna as, need to optimize its characteristic impedance Z on the premise of the indexs such as the degree of coupling are ensured1, it is allowed to and rectangular waveguide
TE10Mould wave impedance ZwgMatch.When it is implemented, the change of wave detector working frequency can cause magnetic field excitation coupling probe 3
Characteristic impedance Z1Change.From microwave transmission principle, wave detector 5 can be understood as the terminal of magnetic field excitation coupling probe 3
Load, for different types of wave detector, its impedance value is also not quite similar, in order to realize that signal transmission is optimized, it is necessary to design
Impedance transformer 4 so that the impedance Z of magnetic field excitation coupling probe 31With wave detector impedance Z3Match.
Mainly it is made up of for the impedance transformer 4 in specific implementation example impedance matching circuit 6,7.Wherein 6 be micro-strip
Lines matching circuit, the purpose is to by the input impedance Z of magnetic field excitation coupling probe 31 *It is changed to Z2, for this example, Z2It can set
It is calculated as 50Ohm,
Electromagnetic simulation software known to radio frequency design teacher can be used in specific implementation, and optimization obtains optimal microstrip circuit knot
Structure.Hereafter, it is necessary to realize Z2To Z3Impedance conversion, for above-mentioned detection chip 5, its equivalent circuit can be reduced in Fig. 5
Resistance RvWith electric capacity CjParallel connection, when small-signal detection works, detection chip 5 is mainly reflected in high resistant characteristic, and impedance real part
RvMuch larger than imaginary impedance Cj.Under this condition, Z2To Z3Impedance conversion can be realized by parallel resistance 7a, 7b, this example
In, it is to be influenceed to reduce the parasitic parameter of resistance in itself using two 100Ohm resistance in parallel.So far have been completed from magnetic
Field excitation coupling probe 3 arrives the impedance matching of detection chip 5.
The radio-frequency power that magnetic field excitation coupling probe 3 is coupled out is converted into voltage signal by detection chip 5, and 8a, 8b are inspection
Ripple filter circuit, can filter out the High-frequency Interference of the output level of wave detector 5, and the electricity of kilohm magnitude may be selected in 8a in this example
Resistance, 8b are the electric capacity of hundred picofarad ranges, need during practical application binding signal frequency and signal type to select specific component values.
Ltcc substrate 10 in specific implementation can use the corresponding ceramic material of Dupont, Ferro or other companies to prepare；
All circuits use graphic printing technological forming in above-mentioned detector circuit 1, and detection chip 5, element 7a, 7b, 8a, 8b are used
Conducting resinl or solder(ing) paste are welded on ltcc substrate 10；Final detecting circuit exports through connector 11, the described class of connector 11
Type can be metal, resin, plastic or other material, and it is welded direct in figure three on microstrip line 9；Above-mentioned screening cover 12 directly covers
Cover on circuit unit chamber 14, can be fixed by the way of bonding or welding, its material can be metal, ceramics, resin etc.
Type.
In summary, the above embodiment of the present invention, solves that existing waveguide wave detector volume weight is big, and processing technology is multiple
It is miscellaneous, it is difficult to the problem of integrating.Card form waveguide detection unit provided by the present invention based on magnetic pumping coupling mechanism, it is suitable extensively
For in high density, highly integrated waveguide transmission system and related application.
Particular embodiments described above, message explanation is carried out to the purpose of the present invention, technical scheme and beneficial effect,
Those skilled in the art should be appreciated that any modification made to present invention specific implementation, replacement, improvement etc., all should
Within protection scope of the present invention.
Claims (4)
1. a kind of waveguide detection unit of magnetic pumping coupling mechanism, including detector circuit, it is characterised in that：Also include being used to seal
Fill the LTCC encapsulating structure of detector circuit；Described LTCC encapsulating structure includes substrate and is opened in
Square wave guide cavity in substrate, square wave guide cavity is surrounded in two sides of substrate, is respectively printed with a ground plane, two connect
Interconnected between ground level by conductive through hole；Described detector circuit includes magnetic field excitation coupling probe, impedance transformer and inspection
Ripple chip；Magnetic field excitation coupling probe is placed in the narrow side side of square wave guide cavity, and magnetic pumping probe one end is connected with ground plane,
The other end is connected with the magnetic pumping signal input part of impedance transformer.
A kind of 2. waveguide detection unit of magnetic pumping coupling mechanism according to claim 1, it is characterised in that：In substrate
Circuit unit chamber is also opened up, impedance transformer and detection chip are placed in circuit unit intracavitary.
3. magnetic field excitation coupling probe according to claim 1 is characterized in that：Described magnetic pumping structure is annular.
A kind of 4. waveguide detection unit of magnetic pumping coupling mechanism according to claim 2, it is characterised in that：Described electricity
Road assembly chambeies are blind chamber, and screening cover is configured with the aperture position of blind chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710680324.8A CN107689473B (en) | 2017-08-10 | 2017-08-10 | Waveguide detection unit of magnetic excitation coupling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710680324.8A CN107689473B (en) | 2017-08-10 | 2017-08-10 | Waveguide detection unit of magnetic excitation coupling mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107689473A true CN107689473A (en) | 2018-02-13 |
| CN107689473B CN107689473B (en) | 2022-03-01 |
Family
ID=61153213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710680324.8A Active CN107689473B (en) | 2017-08-10 | 2017-08-10 | Waveguide detection unit of magnetic excitation coupling mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107689473B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289472A (en) * | 2019-07-15 | 2019-09-27 | 中国科学院近代物理研究所 | A kind of rectangle cavate power combiner |
| CN112034224A (en) * | 2020-08-25 | 2020-12-04 | 中国电子科技集团公司第三十六研究所 | Coupling detector |
| CN113687129A (en) * | 2021-09-10 | 2021-11-23 | 广东电网有限责任公司 | Real-time short-circuit current calculation method and device for switching line |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1393660A (en) * | 2001-06-30 | 2003-01-29 | 三星电子株式会社 | Microwave oven with magnetic field tester |
| CN201974468U (en) * | 2011-03-24 | 2011-09-14 | 电子科技大学 | Transmission type detector for waveguide signal power detection |
| CN104051434A (en) * | 2014-05-28 | 2014-09-17 | 西安电子科技大学 | Packaging structure for integrating VCO and waveguide antenna |
| CN105977595A (en) * | 2016-06-06 | 2016-09-28 | 中国电子科技集团公司第三十八研究所 | Terminal connection feed-backward type rectangular waveguide-microstrip transition device |
| JP2016178415A (en) * | 2015-03-19 | 2016-10-06 | 三菱電機株式会社 | High-frequency detection circuit |
| CN106848519A (en) * | 2017-01-17 | 2017-06-13 | 电子科技大学 | A kind of integrated suspended substrate stripline of medium of artificial complex media filling |
-
2017
- 2017-08-10 CN CN201710680324.8A patent/CN107689473B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1393660A (en) * | 2001-06-30 | 2003-01-29 | 三星电子株式会社 | Microwave oven with magnetic field tester |
| CN201974468U (en) * | 2011-03-24 | 2011-09-14 | 电子科技大学 | Transmission type detector for waveguide signal power detection |
| CN104051434A (en) * | 2014-05-28 | 2014-09-17 | 西安电子科技大学 | Packaging structure for integrating VCO and waveguide antenna |
| JP2016178415A (en) * | 2015-03-19 | 2016-10-06 | 三菱電機株式会社 | High-frequency detection circuit |
| CN105977595A (en) * | 2016-06-06 | 2016-09-28 | 中国电子科技集团公司第三十八研究所 | Terminal connection feed-backward type rectangular waveguide-microstrip transition device |
| CN106848519A (en) * | 2017-01-17 | 2017-06-13 | 电子科技大学 | A kind of integrated suspended substrate stripline of medium of artificial complex media filling |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289472A (en) * | 2019-07-15 | 2019-09-27 | 中国科学院近代物理研究所 | A kind of rectangle cavate power combiner |
| CN112034224A (en) * | 2020-08-25 | 2020-12-04 | 中国电子科技集团公司第三十六研究所 | Coupling detector |
| CN112034224B (en) * | 2020-08-25 | 2023-07-14 | 中国电子科技集团公司第三十六研究所 | Coupling detector |
| CN113687129A (en) * | 2021-09-10 | 2021-11-23 | 广东电网有限责任公司 | Real-time short-circuit current calculation method and device for switching line |
| CN113687129B (en) * | 2021-09-10 | 2023-12-29 | 广东电网有限责任公司 | Real-time short-circuit current calculation method and device for switching line |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107689473B (en) | 2022-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101496279B (en) | Transitions device | |
| CN108711665A (en) | Rectangular waveguide micro-strip hermetic seal transition circuit | |
| CN201383535Y (en) | Rectangular waveguide-substrate integrated waveguide signal conversion and power divider | |
| CN102437398A (en) | Adaptor having surface-mountable antenna with waveguide connector function, and arrangement comprising the antenna device | |
| CN105493343B (en) | Planar transmission line waveguide adaptor | |
| CN109921164B (en) | Non-contact ridge waveguide microstrip coupling slit probe transition circuit | |
| CN110233320A (en) | Present formula suspended stripline waveguide transitions structure in side | |
| CN107689473A (en) | A kind of waveguide detection unit of magnetic pumping coupling mechanism | |
| CN107342459B (en) | Transition probe structure of thin-film microstrip antenna | |
| CN110311196A (en) | The 5G double-passband filter of suspended substrate stripline is integrated based on medium | |
| CN108493550A (en) | A kind of efficient broadband magnetic coupling type waveguide-microstrip transformation structure | |
| CN107275735B (en) | Novel coaxial microstrip converter | |
| CN109361045B (en) | Miniaturized broadband high-power coupler | |
| CN105164850A (en) | Directional coupler | |
| CN111430850A (en) | Coaxial microstrip-to-coaxial connector applicable to cavity filter and assembling method | |
| CN214848990U (en) | Gradual change directional coupler | |
| CN108808202A (en) | Highly reliable close coupling directional coupler based on RF coaxial structure | |
| CN105789810A (en) | Broadband halfmode corrugated substrate integrated waveguide coupler and design method thereof | |
| CN206340652U (en) | Radio frequency vertical transition structure comprising ceramic micro-strip | |
| CN208433502U (en) | Highly reliable close coupling directional coupler based on RF coaxial structure | |
| CN114709579B (en) | Waveguide package of on-chip integrated terahertz function chip | |
| CN206272580U (en) | Directive overrurrent relay coupler and RF front-end module | |
| CN112993505B (en) | Terahertz wire-jumping-free coplanar waveguide single chip and system-level circuit low-insertion-loss packaging structure | |
| CN109888491A (en) | Three beam antenna systems based on SIW | |
| CN115411481A (en) | Waveguide type integrated UTC-PD device |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |