CN104868853B - A kind of Terahertz frequency mixer with radio frequency fillet - Google Patents
A kind of Terahertz frequency mixer with radio frequency fillet Download PDFInfo
- Publication number
- CN104868853B CN104868853B CN201510291076.9A CN201510291076A CN104868853B CN 104868853 B CN104868853 B CN 104868853B CN 201510291076 A CN201510291076 A CN 201510291076A CN 104868853 B CN104868853 B CN 104868853B
- Authority
- CN
- China
- Prior art keywords
- radio frequency
- fillet
- frequency
- quartz substrate
- intermediate channel
- 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.)
- Expired - Fee Related
Links
Landscapes
- Waveguides (AREA)
- Waveguide Connection Structure (AREA)
Abstract
The invention provides a kind of Terahertz frequency mixer with radio frequency fillet, including quartz substrate (1), intermediate channel (2) and radio frequency fillet (3)；The quartz substrate (1) is arranged in intermediate channel (2), forms one section of transmission line；The radio frequency fillet (3) is the groove of frequency mixer upper surface；Including extension (4) and semi-circular segments (5)；The extension (4) connects with intermediate channel (2), is the extension of intermediate channel (2), and the semi-circular segments (5) are half of cylinder, connect to forming an entirety with the extension (4)；The radio frequency fillet (3) not only makes the position of quartz substrate (1) have glue unnecessary after adjustment space, and quartz substrate (1) daub also to have discharge space.The Terahertz frequency mixer with radio frequency fillet of the present invention, not only can provide glue unnecessary behind space, and circuit board daub for the position adjustment of circuit board also has discharge space.
Description
Technical field
The present invention relates to THz devices field, more particularly to a kind of Terahertz frequency mixer with radio frequency fillet.
Background technology
Superhet possesses very high sensitivity and frequency spectrum precision, can be used for from 0.1THz until 2.5THz
Terahertz detection.Frequency mixer is located at the front end of receiver, under the driving of local oscillation signal, high-frequency signal is converted to disposable
Intermediate-freuqncy signal, principal mode have superconduction-insulation-super conducting mixer, thermoelectron radiation frequency mixer and Schottky diode mixing
Device.Compared with first two frequency mixer, Schottky diode frequency mixer can work at room temperature, structure is compacter, performance more
Plus it is reliable, therefore the first choice as spaceborne millimeter wave radiometer.
The key problem of Terahertz mixer design is how to realize radiofrequency signal, local oscillation signal, intermediate-freuqncy signal to Xiao Te
The matching of based diode.Wherein radiofrequency signal, the frequency of local oscillation signal are higher, and corresponding transmission line is all waveguiding structure.Two poles
Pipe is welded on quartz substrate, and corresponding transmission line is suspension microstrip structure.Then, radio frequency, local oscillation signal reach diode
A waveguide to the conversion for suspending micro-strip can all be passed through before.This converting member is the quartzy base by being placed on intermediate channel
Piece and waveguide channels intersect vertically realization.
The size of the cavity of terahertz wave band device is smaller, typically in centimetres.In frequency 0.1THz until 1THz
When, cavity typically makes the square module of the 2cm length of sides, the length 2mm width 0.2mm depth 0.2mm of intermediate channel, quartzy base
The length 2mm width 0.2mm depth 0.05mm of piece.Quartz substrate is installed to one section of transmission line of composition in intermediate channel, and precision will
Ask comparison high, locally reach 10um, it is necessary to the technique filled using micro-group.Transmission line is using suspension microstrip circuit compared to micro-strip electricity
Road, has broader coupling bandwidth, lower loss, and this is the reason for transmission line is typically using suspension micro-strip in intermediate channel.
Suspension micro-strip requires that dielectric circuit plate is not contacted with ground, keeps vacant state, this brings difficulty to the installation of circuit board.Separately
On the one hand, the formation of raceway groove needs to use Precision Machining in cavity, even if being 0.1mm milling cutter using diameter, 0.2mm width
Also unavoidably there is obvious fillet the end of raceway groove.The presence of fillet causes in kind incomplete same with ideal model.It is existing
The radio frequency ground connection for having the quartz substrate in technology mainly has two kinds.One kind is, by pressing spun gold to realize, radio frequency to be connected by spun gold
The circuit of ground connection and ground.The fillet of trench ends in this mode is not adversely affected, but technique is relative complex, middle
The length of raceway groove also can be longer.Another is, by the way that daub is realized at radio frequency ground connection, to be grounded by conductive gemel connection radio frequency
Circuit and ground.The fillet of trench ends in this mode can influence the placement of circuit board.
The content of the invention
The fillet problem occurred in intermediate channel it is an object of the invention to overcome existing Terahertz frequency mixer, it is contemplated that
Intermediate channel end is radio frequency ground connection, it is only necessary to ensure that earth terminal is fully contacted with ground.Then, set in the end of intermediate channel
A radio frequency fillet is counted, actively goes to produce a larger fillet, including an extension and a semi-circular segments using milling cutter；Prolong
Long section is used for the adjustment of the position of circuit board, and semi-circular segments are used to deposit the surplus glue discharged when circuit board daub is installed；So as to
A kind of simple in construction, dependable performance, and the Terahertz frequency mixer with radio frequency fillet for being conducive to circuit board to install are provided.
To achieve these goals, the invention provides a kind of Terahertz frequency mixer with radio frequency fillet, including quartz
Substrate 1, intermediate channel 2 and radio frequency fillet 3；The quartz substrate 1 is arranged in intermediate channel 2, forms one section of transmission line；It is described
Radio frequency fillet 3 is the groove of frequency mixer upper surface；Including extension 4 and semi-circular segments 5；The extension 4 and the phase of intermediate channel 2
Connect, be the extension of intermediate channel 2, the semi-circular segments 5 are half of cylinder, connect to forming an entirety with the extension 4；Institute
Stating radio frequency fillet 3 not only makes the position of quartz substrate 1 have glue unnecessary after adjustment space, and the daub of quartz substrate 1 also to have
Discharge space.
In above-mentioned technical proposal, the diameter of the semi-circular segments 5 is equal to the width of intermediate channel 2, and the depth of semi-circular segments 5 is equal to
The depth of intermediate channel 2.
In above-mentioned technical proposal, described quartz substrate 1 is just faced outwardly, by reverse side daub, the two ends of quartz substrate 1
Intermediate frequency micro-strip 6 and radio frequency ground connection 8；It is respectively installed on the intermediate frequency step 9 and radio frequency step 11 of intermediate channel 2；In quartz substrate 1
The suspension micro-strip 7 at end correspond to the deep trouth 10 of intermediate channel 2, form one section of suspension microstrip circuit.
In above-mentioned technical proposal, the front of the quartz substrate 1 is to cover copper face, and the thickness sum of its thickness and daub is equal to
The depth of intermediate frequency step 9.
In above-mentioned technical proposal, the intermediate frequency step 9 is identical with the depth of radio frequency step 11, the depth ratio of the deep trouth 10
The depth of intermediate frequency step 9 is big.
In above-mentioned technical proposal, the intermediate frequency micro-strip 6 and radio frequency ground connection 8 are designed according to microstrip circuit, and front is circuit, instead
Face contacts ground.
In above-mentioned technical proposal, the suspension micro-strip 7 is according to suspension microstrip circuit design, and front is circuit, and reverse side does not connect
Tread surface.
In above-mentioned technical proposal, the intermediate frequency step 9 and radio frequency step 11 respectively form a platform at the two ends of intermediate channel 2
Rank, for microstrip circuit patch install；The suspension that the deep trouth 10 is used to suspend micro-strip 7 is installed.
The advantage of the invention is that：The Terahertz frequency mixer with radio frequency fillet of the present invention, can be not only circuit board
Position adjustment unnecessary glue behind space, and circuit board daub be provided also have discharge space.
Brief description of the drawings
Fig. 1 is the front view of the Terahertz frequency mixer with radio frequency fillet of the present invention；
Fig. 2 is the side view of the Terahertz frequency mixer with radio frequency fillet of the present invention；
Fig. 3 is the schematic diagram of the radio frequency fillet of the Terahertz frequency mixer with radio frequency fillet of the present invention；
Fig. 4 is quartz substrate and the structural representation of intermediate channel of the Terahertz frequency mixer with radio frequency fillet of the present invention
Figure.
Brief description of the drawings：
1st, quartz substrate 2, intermediate channel 3, radio frequency fillet
4th, extension 5, semi-circular segments 6, intermediate frequency micro-strip
7th, suspension micro-strip 8, radio frequency ground connection 9, intermediate frequency step
10th, deep trouth 11, radio frequency step
Embodiment
The present invention is described in more detail with specific embodiment below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, a kind of Terahertz frequency mixer with radio frequency fillet, including quartz substrate 1, intermediate channel 2
With radio frequency fillet 3；The quartz substrate 1 is arranged in intermediate channel 2, forms one section of transmission line；The radio frequency fillet 3 is mixing
The groove of device upper surface；Including extension 4 and semi-circular segments 5；
As shown in figure 3, the extension 4 connects with intermediate channel 2, and it is the extension of intermediate channel 2, the semi-circular segments 5
For half of cylinder, connect to forming an entirety with the extension 4；The radio frequency fillet 3 not only has the position of quartz substrate 1
Unnecessary glue also has discharge space after adjustment space, and the daub of quartz substrate 1.
The diameter of the semi-circular segments 5 is equal to the width of intermediate channel 2, and depth is equal to the depth of intermediate channel 2.In this implementation
In example, the length of the intermediate channel 2 is 2mm, and width is 0.2mm, and depth is 0.2mm；The length of the extension 4 is
0.05mm, the diameter of semi-circular segments 5 is 0.2mm.
As shown in figure 4, just facing outwardly for described quartz substrate 1, passes through reverse side daub, the intermediate frequency at the two ends of quartz substrate 1
Micro-strip 6 and radio frequency ground connection 8；It is respectively installed on the intermediate frequency step 9 and radio frequency step 11 of intermediate channel 2；The middle-end of quartz substrate 1
Suspension micro-strip 7 correspond to the deep trouth 10 of intermediate channel 2, form one section of suspension microstrip circuit.
The front of the quartz substrate 1 is to cover copper face, and the thickness sum of its thickness and daub is equal to the depth of intermediate frequency step 9
Degree, so, the front meeting of quartz substrate 1 and the flush with outer surface of frequency mixer cavity；The transmission line of intermediate channel 2 is that two ends are micro-
Band, centre are the circuit forms for suspending micro-strip.
In the present embodiment, the thickness of quartz substrate 1 is 50um, and the thickness of glue is 25um；The depth of intermediate frequency step 9 is
75um。
Depth in the intermediate channel 2 is different, and the intermediate frequency step 9 is identical with the depth of radio frequency step 11, the depth
The depth of the depth ratio intermediate frequency step 9 of groove 10 is big, and in the present embodiment, the depth of the intermediate frequency step 9 and radio frequency step 11 is
75um, the depth of deep trouth 10 is 120um.
The intermediate frequency micro-strip 6 and radio frequency ground connection 8 are designed according to microstrip circuit, and front is circuit, reverse side contact ground.
The suspension micro-strip 7 is according to suspension microstrip circuit design, and front is circuit, and reverse side is not in contact with the ground.
The intermediate frequency step 9 and radio frequency step 11 respectively form a step at the two ends of intermediate channel 2, for microstrip circuit
Patch install；The suspension that the deep trouth 10 is used to suspend micro-strip 7 is installed.
It should be noted last that, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although ginseng
The present invention is described in detail according to embodiment, it will be understood by those within the art that, to the technical side of the present invention
Case is modified or equivalent substitution, and without departure from the spirit and scope of technical solution of the present invention, it all should cover in the present invention
Right among.
Claims (8)
1. a kind of Terahertz frequency mixer with radio frequency fillet, including quartz substrate (1), intermediate channel (2) and radio frequency fillet
(3)；Characterized in that, the quartz substrate (1) is arranged in intermediate channel 2, one section of transmission line is formed；The radio frequency fillet
(3) it is the groove of frequency mixer upper surface；Including extension (4) and semi-circular segments (5)；The extension (4) and intermediate channel (2) phase
Connect, be the extension of intermediate channel (2), the semi-circular segments (5) are half of cylinder, connect to forming one with the extension (4)
It is overall；It is many after adjustment space, and quartz substrate (1) daub that the radio frequency fillet (3) not only has the position of quartz substrate (1)
Remaining glue also has discharge space.
2. the Terahertz frequency mixer according to claim 1 with radio frequency fillet, it is characterised in that the semi-circular segments (5)
Diameter be equal to the width of intermediate channel (2), the depth of semi-circular segments (5) is equal to the depth of intermediate channel (2).
3. the Terahertz frequency mixer according to claim 1 with radio frequency fillet, it is characterised in that described quartz substrate
(1) just face outwardly, by reverse side daub, quartz substrate (1) two ends are that intermediate frequency micro-strip (6) and radio frequency are grounded (8), wherein, institute
State intermediate frequency micro-strip (6) to be installed on the intermediate frequency step (9) of intermediate channel (2), the radio frequency ground connection (8) is installed to intermediate channel
(2) on radio frequency step (11)；The suspension micro-strip (7) of quartz substrate (1) middle-end correspond to the deep trouth (10) of intermediate channel (2),
Form one section of suspension microstrip circuit.
4. the Terahertz frequency mixer according to claim 3 with radio frequency fillet, it is characterised in that the quartz substrate
(1) front is to cover copper face, and the thickness sum of the thickness for covering copper face and daub is equal to the depth of intermediate frequency step (9).
5. the Terahertz frequency mixer according to claim 3 with radio frequency fillet, it is characterised in that the intermediate frequency step
(9) identical with the depth of radio frequency step (11), the depth of the depth ratio intermediate frequency step (9) of the deep trouth (10) is big.
6. the Terahertz frequency mixer according to claim 3 with radio frequency fillet, it is characterised in that the intermediate frequency micro-strip
(6) designed with radio frequency ground connection (8) according to microstrip circuit, front is circuit, reverse side contact ground.
7. the Terahertz frequency mixer according to claim 3 with radio frequency fillet, it is characterised in that the suspension micro-strip
(7) according to suspension microstrip circuit design, front is circuit, and reverse side is not in contact with the ground.
8. the Terahertz frequency mixer according to claim 3 with radio frequency fillet, it is characterised in that the intermediate frequency step
(9) and radio frequency step (11) intermediate channel (2) two ends respectively formed a step, for microstrip circuit patch install；Institute
State the suspension installation that deep trouth (10) is used to suspend micro-strip (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510291076.9A CN104868853B (en) | 2015-05-29 | 2015-05-29 | A kind of Terahertz frequency mixer with radio frequency fillet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510291076.9A CN104868853B (en) | 2015-05-29 | 2015-05-29 | A kind of Terahertz frequency mixer with radio frequency fillet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104868853A CN104868853A (en) | 2015-08-26 |
| CN104868853B true CN104868853B (en) | 2017-10-03 |
Family
ID=53914422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510291076.9A Expired - Fee Related CN104868853B (en) | 2015-05-29 | 2015-05-29 | A kind of Terahertz frequency mixer with radio frequency fillet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104868853B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7376403B1 (en) * | 2005-04-25 | 2008-05-20 | Sandia Corporation | Terahertz radiation mixer |
| CN104579176A (en) * | 2015-01-07 | 2015-04-29 | 电子科技大学 | Subharmonic harmonic mixer based on coplanar waveguide transmission lines |
| CN104660171B (en) * | 2015-01-07 | 2017-12-15 | 电子科技大学 | A kind of sub-harmonic mixer of modified based on coplanar waveguide transmission line |
-
2015
- 2015-05-29 CN CN201510291076.9A patent/CN104868853B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104868853A (en) | 2015-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201383535Y (en) | Rectangular waveguide-substrate integrated waveguide signal conversion and power divider | |
| US7268737B1 (en) | High gain broadband planar antenna | |
| US20170310005A1 (en) | Radio frequency unit | |
| CN105048967A (en) | 340GHz eighth harmonic mixer | |
| CN104158495A (en) | Novel hybrid integrated circuit for terahertz mixer | |
| CN108493628A (en) | A kind of novel substrate integration wave-guide polar duplex antenna system | |
| CN111371410A (en) | Terahertz quartic harmonic mixer | |
| CN105356020A (en) | Quarter-wavelength step-impedance resonator-based band-pass filter and design method | |
| CN105375906A (en) | Amplitude limiting unit circuit, installation device, single-stage amplitude limiting circuit, and amplitude limiting device | |
| CN105743533A (en) | High-temperature non-pressure seamless sintering technology-based miniaturized millimeter wave transmitting and receiving assembly | |
| CN104852690B (en) | A kind of Terahertz frequency mixer | |
| CN104868853B (en) | A kind of Terahertz frequency mixer with radio frequency fillet | |
| CN204464433U (en) | For the braodband directional coupler of 4G mobile communication | |
| CN101471477A (en) | Coupler for passive cavity filter | |
| CN104980111B (en) | A kind of Terahertz frequency mixer with the adjustable waveguide short face in position | |
| CN103943963A (en) | Dual polarization slot antenna based on SIW technology | |
| CN106207346A (en) | A kind of alleviating distention in middle-JIAO frequency millimeter wave fundamental wave mixing circuit of low local oscillation power | |
| CN102694265A (en) | Micro-strip scoop-type feed slit surface wave excitation antenna | |
| CN1949589B (en) | Half module substrate integrated wave guide ring electric bridge | |
| CN104466336A (en) | Broadband directional coupler used for 4G mobile communication | |
| CN206412485U (en) | A kind of antenna for carrying match circuit | |
| CN103152066B (en) | Multi-chip integrated E band reception module | |
| EP3846340B1 (en) | Device for mixing or multiplying frequency | |
| CN203660031U (en) | Coaxial microstrip converter | |
| CN106771659A (en) | A kind of waveguide broad-band wave detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100190 No. two south of Zhongguancun, Haidian District, Beijing 1 Patentee after: NATIONAL SPACE SCIENCE CENTER, CAS Address before: 100190 No. two south of Zhongguancun, Haidian District, Beijing 1 Patentee before: Space Science & Applied Research Centre, Chinese Academy of Sciences |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171003 Termination date: 20210529 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |