CN202167588U - Terahertz wave filter with periodical hollow structures - Google Patents
Terahertz wave filter with periodical hollow structures Download PDFInfo
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- CN202167588U CN202167588U CN2011200677343U CN201120067734U CN202167588U CN 202167588 U CN202167588 U CN 202167588U CN 2011200677343 U CN2011200677343 U CN 2011200677343U CN 201120067734 U CN201120067734 U CN 201120067734U CN 202167588 U CN202167588 U CN 202167588U
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- wave filter
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Abstract
The utility model discloses a Terahertz wave filter with periodical hollow structures. The Terahertz wave filter comprises a signal input terminal, a signal output terminal, a hollow transmission layer, a substrate, shuttle-shaped hollow structures, and ring-shaped arc hollow structures; the hollow transmission layer comprises N*N periodical hollow units, and is connected with the substrate; each periodical hollow unit comprises three mutually crossed shuttle-shaped hollow structures and six ring-shaped arc hollow structures; the ring-shaped arc hollow structures are respectively arranged at the two ends of the shuttle-shaped hollow structures; and a signal is inputted from the signal input end, and passes through the hollow transmission layer and the substrate in sequence, then is transmitted to the signal output end, thus the filtering of the signal is realized. The Terahertz wave filter provided by the utility model has the advantages of high frequency selectivity, broad bandwidth, simple structure, small size, light weight, material conservation, convenience in manufacture, easiness in integration and the like.
Description
Technical field
The utility model relates to filter, relates in particular to a kind of THz wave filter of periodicity engraved structure.
Background technology
Between microwave and infrared radiation, the amount of information of this wave band accounts for about 50% of gross information content to THz wave in universe in electromagnetic spectrum.Until the eighties in 20th century, to THz wave each side The Characteristic Study with understand also very limitedly, thereby be called as so-called between far infrared and the millimeter wave " Terahertz space ".In the last few years, the research of the actual generating technique in Terahertz source had obtained very big progress.Produce the appearance of more powerful continuous THz wave method along with QCL, free electron laser, light wave difference frequency method and through optical rectification etc.; And the progress of the Terahertz detection aspects such as research of superhet and direct detector, Terahertz Technology becomes the focus of broad research in the world wide gradually.A lot of in the world at present countries all carry out the research of Terahertz aspect energetically, and a lot of at home colleges and universities and research institute are engaged in Terahertz research.
The Terahertz system mainly is made up of radiation source, sensitive detection parts and various function element.In practical application,, improve the performance of system, thereby the THz wave filter there is important use in reality because the restriction of applied environment noise and application need etc. need filtering unwanted frequency scope and noise.
THz wave filter construction current domestic and international research and that proposed is mainly based on structures such as photonic crystal, surface plasmas; These structures are often very complicated; And difficult in the actual fabrication process, cost is higher, requires also high to processing technology and processing environment.So press for development simple in structure, that size is little, the THz wave filter of being convenient to processing and fabricating supports the THz wave application is proposed.
Summary of the invention
The purpose of the utility model is the deficiency that overcomes prior art, and a kind of THz wave filter of periodicity engraved structure is provided.
Periodically the THz wave filter of engraved structure comprises signal input part, signal output part, hollow out transport layer, matrix, fusiformis engraved structure, circular arc engraved structure; The hollow out transport layer links to each other with matrix, and the hollow out transport layer comprises N * N hollow out periodic unit, and the hollow out periodic unit comprises three cross one another fusiformis engraved structures and six circular arc engraved structures, and fusiformis engraved structure two ends are respectively equipped with the circular arc engraved structure; Signal is imported from signal input part, passes through hollow out transport layer, matrix arriving signal output afterwards successively, realizes signal is carried out filtering.
The spacing of described two adjacent hollow out periodic units is 80～120 μ m.Described six circular arc engraved structures are equidistantly arranged, and its spacing is 4～8 μ m, and the annular internal diameter of circular arc engraved structure is 24～36 μ m, and annular external diameter is 40～56 μ m.The material of described matrix is the High Resistivity Si material, and the material of hollow out transport layer is a copper.
The utlity model has the frequency selectivity height, bandwidth is big, simple in structure, size is little, volume is little, in light weight, economical with materials, be convenient to make and be easy to advantages such as integrated.
Description of drawings
Fig. 1 is the THz wave Filter Structures sketch map of periodicity engraved structure;
Fig. 2 is the structural representation of the hollow out transport layer of the utility model;
Fig. 3 is the structural representation of the hollow out periodic unit of the utility model;
Fig. 4 is the THz wave performance of filter curve of periodicity engraved structure.
Embodiment
Shown in Fig. 1～3, periodically the THz wave filter of engraved structure comprises signal input part 1, signal output part 2, hollow out transmitting layer 3, matrix 5, fusiformis engraved structure 6, circular arc engraved structure 7; The hollow out transmitting layer 3 links to each other with matrix 5; The hollow out transmitting layer 3 comprises N * N hollow out periodic unit 4; Hollow out periodic unit 4 comprises three cross one another fusiformis engraved structures 6 and six circular arc engraved structures 7, and fusiformis engraved structure 6 two ends are respectively equipped with circular arc engraved structure 7; Signal passes through hollow out transmitting layer 3, matrix 5 arriving signal output 2 afterwards successively from signal input part 1 input, realizes signal is carried out filtering.
The spacing of described two adjacent hollow out periodic units 4 is 80～120 μ m.Described six circular arc engraved structures 7 are equidistantly arranged, and its spacing is 4～8 μ m, and the annular internal diameter of circular arc engraved structure 7 is 24～36 μ m, and annular external diameter is 40～56 μ m, and the width of circular arc engraved structure is identical with the width of fusiformis engraved structure.The material of described matrix 5 is the High Resistivity Si material, and the material of hollow out transmitting layer 3 is a copper.
Structure number N=80, a=90 μ m, annular external diameter r=42 μ m, fusiformis engraved structure width w=8 μ m, the spacing g=6 μ m of the circular arc engraved structure of equidistantly arranging.Periodically the matrix of the THz wave filter of engraved structure is the High Resistivity Si material, and the transport layer structure is a copper material.Use THz-TDS to record this filter center Frequency point and be 1.98THz, the return loss S11 of this point is-39dB that inserting loss S21 is-0.8dB that bandwidth is 0.5THz.
Claims (4)
1. the THz wave filter of a periodicity engraved structure is characterized in that comprising signal input part (1), signal output part (2), hollow out transport layer (3), matrix (5), fusiformis engraved structure (6), circular arc engraved structure (7); Hollow out transport layer (3) links to each other with matrix (5); Hollow out transport layer (3) comprises N * N hollow out periodic unit (4); Hollow out periodic unit (4) comprises three cross one another fusiformis engraved structures (6) and six circular arc engraved structures (7), and fusiformis engraved structure (6) two ends are respectively equipped with circular arc engraved structure (7); Signal passes through hollow out transport layer (3), matrix (5) arriving signal output (2) afterwards successively from signal input part (1) input, realizes signal is carried out filtering.
2. the THz wave filter of a kind of periodicity engraved structure according to claim 1, the spacing that it is characterized in that described two adjacent hollow out periodic units (4) are 80～120 μ m.
3. the THz wave filter of a kind of periodicity engraved structure according to claim 1; It is characterized in that equidistantly arrangement of described six circular arc engraved structures (7); Its spacing is 4～8 μ m; The annular internal diameter of circular arc engraved structure (7) is 24～36 μ m, and annular external diameter is 40～56 μ m.
4. the THz wave filter of a kind of periodicity engraved structure according to claim 1, the material that it is characterized in that described matrix (5) is the High Resistivity Si material, the material of hollow out transport layer (3) is a copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200677343U CN202167588U (en) | 2011-03-15 | 2011-03-15 | Terahertz wave filter with periodical hollow structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200677343U CN202167588U (en) | 2011-03-15 | 2011-03-15 | Terahertz wave filter with periodical hollow structures |
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| Publication Number | Publication Date |
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| CN202167588U true CN202167588U (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200677343U Expired - Fee Related CN202167588U (en) | 2011-03-15 | 2011-03-15 | Terahertz wave filter with periodical hollow structures |
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| CN (1) | CN202167588U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022601A (en) * | 2012-12-24 | 2013-04-03 | 中国计量学院 | Arc-groove THz-wave filter |
| CN103515711A (en) * | 2013-10-23 | 2014-01-15 | 哈尔滨工业大学 | Infrared radiation transmitting microstrip antenna based on random metallic mesh |
| CN103515709A (en) * | 2013-10-23 | 2014-01-15 | 哈尔滨工业大学 | Infrared radiation transmitting microstrip antenna based on random mesh and infrared transmitting semiconductor |
| CN109149029A (en) * | 2018-08-20 | 2019-01-04 | 中国计量大学 | The Terahertz tunable filter that period metal structure is interacted with graphene |
-
2011
- 2011-03-15 CN CN2011200677343U patent/CN202167588U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022601A (en) * | 2012-12-24 | 2013-04-03 | 中国计量学院 | Arc-groove THz-wave filter |
| CN103515711A (en) * | 2013-10-23 | 2014-01-15 | 哈尔滨工业大学 | Infrared radiation transmitting microstrip antenna based on random metallic mesh |
| CN103515709A (en) * | 2013-10-23 | 2014-01-15 | 哈尔滨工业大学 | Infrared radiation transmitting microstrip antenna based on random mesh and infrared transmitting semiconductor |
| CN109149029A (en) * | 2018-08-20 | 2019-01-04 | 中国计量大学 | The Terahertz tunable filter that period metal structure is interacted with graphene |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20130315 |