CN202034461U - Periodic terahertz wave filter in I-shaped hollow-out structure - Google Patents
Periodic terahertz wave filter in I-shaped hollow-out structure Download PDFInfo
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- CN202034461U CN202034461U CN2011200933195U CN201120093319U CN202034461U CN 202034461 U CN202034461 U CN 202034461U CN 2011200933195 U CN2011200933195 U CN 2011200933195U CN 201120093319 U CN201120093319 U CN 201120093319U CN 202034461 U CN202034461 U CN 202034461U
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Abstract
The utility model discloses a periodic terahertz wave filter in an I-shaped hollow-out structure. The terahertz wave filter includes a signal input terminal, a signal output terminal, an I-shaped hollow-out structure transmission layer, and a base. The I-shaped hollow-out structure transmission layer is connected with the base, and the I-shaped hollow-out structure transmission layer includes an N times N number of I-shaped hollow-out period units. The I-shaped hollow-out period unit is formed by connecting an upper rectangular hollow-out structure, a middle rectangular hollow-out structure, and a lower rectangular hollow-out structure. A signal is inputted from the signal input terminal and then the signal passes through the I-shaped hollow-out structure transmission layer and the base to arrive to the signal output terminal to realize the signal filtering. The periodic terahertz wave filter in the I-shaped hollow-out structure has the advantages of high frequency selectivity, big bandwidth, simple structure, small volume, light weight, material saving, convenience in production, easy integration, and the like.
Description
Technical field
The utility model relates to filter, relates in particular to the THz wave filter of the I-shaped engraved structure of a kind of periodicity.
Background technology
Terahertz (THz) ripple is meant that frequency is 3000-30 μ m at 0.1T-10THz(wavelength) electromagnetic wave in the scope.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.THz wave is in the field of electronics to the photonic propulsion transition, and the integrated advantage of microwave communication with optical communication: at first THz wave is communicated by letter and can be obtained the bandwidth more much bigger than microwave communication, can effectively solve increasingly serious band resource problem of shortage.THz wave has good penetrability in addition, and it can penetrate materials such as flue dust, wall, carbon plate, cloth and pottery with very little decay, solved the limitation of optical communication in adverse circumstances such as flue dust.The transmission characteristic of THz wave has determined THz wave can be applied between inter-satellite, star ground and short-range wide-band mobile communication.Terahertz radar resolution height can become following High Accuracy Radar developing direction in addition.Along with quantum cascade laser, free electron laser, light wave difference frequency method and the appearance that produces more powerful continuous THz wave method by 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.
In the Terahertz system, the THz wave filter can be brought into play very important application when practical application.Research and that proposed both at home and abroad now THz wave filter construction 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 promotes the THz wave application is proposed.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and the THz wave filter of the I-shaped engraved structure of a kind of periodicity is provided.
Periodically the THz wave filter of I-shaped engraved structure comprises signal input part, signal output part, I-shaped engraved structure transport layer, matrix; I-shaped engraved structure transport layer links to each other with matrix, and I-shaped engraved structure transport layer comprises N * N I-shaped hollow out periodic unit, and I-shaped hollow out periodic unit is by last rectangle engraved structure, and middle rectangle engraved structure, following rectangle engraved structure connect and combine; Signal is imported from signal input part, passes through I-shaped engraved structure transport layer, matrix arriving signal output afterwards successively, realizes signal is carried out filtering.
The spacing of described two adjacent I-shaped hollow out periodic units is 200 ~ 240 μ m.Described upward the rectangle engraved structure is identical with following rectangle engraved structure structure, and size equates that the length of last rectangle engraved structure and following rectangle engraved structure is 120 ~ 160 μ m, and wide is 40 ~ 80 μ m.The length of rectangle engraved structure is 120 ~ 160 μ m in described, and wide is 40 ~ 80 μ m.The material of described matrix is the High Resistivity Si material, and the material of I-shaped engraved structure 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 schematic diagram of the I-shaped engraved structure of periodicity;
Fig. 2 is the structural representation of I-shaped engraved structure transport layer of the present utility model;
Fig. 3 is an I-shaped hollow out periodic unit structural representation of the present utility model
Fig. 4 is the performance curve of THz wave filter of the present utility model.
Embodiment
Shown in Fig. 1 ~ 4, periodically the THz wave filter of I-shaped engraved structure comprises signal input part 1, signal output part 2, I-shaped engraved structure transmitting layer 3, matrix 5; I-shaped engraved structure transmitting layer 3 links to each other with matrix 5, I-shaped engraved structure transmitting layer 3 comprises N * N I-shaped hollow out periodic unit 4, I-shaped hollow out periodic unit 4 is by last rectangle engraved structure 6, and middle rectangle engraved structure 8, following rectangle engraved structure 7 connect and combine; Signal passes through I-shaped engraved structure 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 I-shaped hollow out periodic units 4 is 200 ~ 240 μ m.Described upward rectangle engraved structure 6 is identical with following rectangle engraved structure 7 structures, and size equates that the length of last rectangle engraved structure 6 and following rectangle engraved structure 7 is 120 ~ 160 μ m, and wide is 40 ~ 80 μ m.The length of rectangle engraved structure 8 is 120 ~ 160 μ m in described, and wide is 40 ~ 80 μ m.The material of described matrix 5 is the High Resistivity Si material, and the material of I-shaped engraved structure transmitting layer 3 is a copper.
Embodiment 1, and it is as follows to set each parameter value:
Structure number N is 80, and structural cycle is 220 μ m, and the length of last rectangle engraved structure 6 and following rectangle engraved structure 7 is 140 μ m, and wide is 60 μ m.The length of middle rectangle engraved structure 8 is 150 μ m, and wide is 60 μ m.The matrix of this filter is the High Resistivity Si material, and the transport layer structure is a copper material, and center frequency points is 0.9THz, and the return loss S11 of this point is-30.5dB that insertion loss S21 is-0.2dB.
Claims (5)
1. the THz wave filter of the I-shaped engraved structure of periodicity is characterized in that comprising signal input part (1), signal output part (2), I-shaped engraved structure transport layer (3), matrix (5); I-shaped engraved structure transport layer (3) links to each other with matrix (5), I-shaped engraved structure transport layer (3) comprises N * N I-shaped hollow out periodic unit (4), I-shaped hollow out periodic unit (4) is by last rectangle engraved structure (6), middle rectangle engraved structure (8), following rectangle engraved structure (7) connection combines; Signal passes through I-shaped engraved structure 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 the I-shaped engraved structure of a kind of periodicity according to claim 1, the spacing that it is characterized in that described two adjacent I-shaped hollow out periodic units (4) are 200 ~ 240 μ m.
3. the THz wave filter of the I-shaped engraved structure of a kind of periodicity according to claim 1, it is characterized in that described last rectangle engraved structure (6) is identical with following rectangle engraved structure (7) structure, size equates, the length of last rectangle engraved structure (6) and following rectangle engraved structure (7) is 120 ~ 160 μ m, and wide is 40 ~ 80 μ m.
4. the THz wave filter of the I-shaped engraved structure of a kind of periodicity according to claim 1 is characterized in that the length of described middle rectangle engraved structure (8) is 120 ~ 160 μ m, and wide is 40 ~ 80 μ m.
5. the THz wave filter of the I-shaped engraved structure of a kind of periodicity according to claim 1, the material that it is characterized in that described matrix (5) is the High Resistivity Si material, the material of I-shaped engraved structure transport layer (3) is a copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200933195U CN202034461U (en) | 2011-04-01 | 2011-04-01 | Periodic terahertz wave filter in I-shaped hollow-out structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200933195U CN202034461U (en) | 2011-04-01 | 2011-04-01 | Periodic terahertz wave filter in I-shaped hollow-out structure |
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| Publication Number | Publication Date |
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| CN202034461U true CN202034461U (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200933195U Expired - Fee Related CN202034461U (en) | 2011-04-01 | 2011-04-01 | Periodic terahertz wave filter in I-shaped hollow-out structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019153456A1 (en) * | 2018-02-11 | 2019-08-15 | 深圳市太赫兹科技创新研究院有限公司 | Terahertz band-pass filter |
| CN110212272A (en) * | 2019-06-10 | 2019-09-06 | 上海师范大学 | The filter resonance unit and preparation method of CO Terahertz characteristic spectral line detection |
-
2011
- 2011-04-01 CN CN2011200933195U patent/CN202034461U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019153456A1 (en) * | 2018-02-11 | 2019-08-15 | 深圳市太赫兹科技创新研究院有限公司 | Terahertz band-pass filter |
| CN110212272A (en) * | 2019-06-10 | 2019-09-06 | 上海师范大学 | The filter resonance unit and preparation method of CO Terahertz characteristic spectral line detection |
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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: 20111109 Termination date: 20120401 |