CN204948027U - Terahertz even solid-state frequency multiplier - Google Patents
Terahertz even solid-state frequency multiplier Download PDFInfo
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- CN204948027U CN204948027U CN201520705550.3U CN201520705550U CN204948027U CN 204948027 U CN204948027 U CN 204948027U CN 201520705550 U CN201520705550 U CN 201520705550U CN 204948027 U CN204948027 U CN 204948027U
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- terahertz
- schottky diode
- waveguide
- pass filter
- frequency multiplier
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Abstract
A kind of Terahertz even solid-state frequency multiplier disclosed in the utility model, aim to provide a kind of structure simple, efficiency is high, effectively can provide the frequency multiplier of terahertz signal.The utility model is achieved by following technical proposals: external radio-frequency signal is inputted by standard rectangular waveguide (1), enters Schottky diode (3) by subtracting wide waveguide (2).Schottky diode carries out frequency conversion to input first-harmonic, produces even-order harmonic, then enters Terahertz band pass filter (4), filter clutter, by means of only the even-order harmonic component needed.The outside DC feedback low pass filter (5) that passes through carries out feed excitation to Schottky diode (3), promotes the operating efficiency of Schottky diode.The even harmonics frequencies signal produced exports finally by standard waveguide (6).The utility model solves the difficult problem that terahertz signal source efficient, stable in engineer applied realizes.
Description
Technical field
The utility model is the even solid-state frequency multiplier about being applied to image objects, environmental monitoring, medical diagnosis, radio astronomy, broadband mobile communication, safety inspection, anti-terrorism detection, near space communication/satellite communication and radar detection etc. and a kind of Terahertz frequency range in the closely related field of national economy and social development.
Background technology
THz wave (THz) generally refers to the electromagnetic wave of frequency within the scope of 0.1-10THz, the electromagnetic radiation region of suitable wide region between millimeter wave and infrared light.Terahertz frequency range frequency multiplier and frequency mixer are the Key Circuit of Terahertz system receiving and transmitting front end, and their performance determines the performance of Terahertz system.The position of the special electromagnetic wave spectrum residing for THz wave, it has much superior characteristic, has very important science and using value, makes it obtain countries in the world and pays close attention to greatly.Current, the contradiction of high speed business demand that radio communication is faced with limited spectrum resources and increases rapidly.The Terahertz resource of frequency range is enriched, residing frequency range position is just in time in scientific technological advance relatively preferably between microwave and millimeter wave and infrared optical, form " blank " relatively fallen behind, there is the advantages such as message capacity is large, system bulk is little, good confidentiality.THz communication technology, except meeting ground short distance high capacity communication demand, can also be used for the aspect such as space communication, acquisition of signal, and the development THz communication technology has important actual application value and wide application prospect.Therefore, carry out THz communication technology research very urgent, be badly in need of the THz communication technology that development has independent intellectual property right, for the development of resources of Terahertz frequency range and application lay the foundation.
In the application of the THz wave communication technology, high-quality and reliable and stable THz source play vital effect, and the quality of its performance is related to the quality of whole Terahertz system solid-state front end service behaviour.And the mode obtaining terahertz signal source at present mainly contains: one is utilize the devices such as snowslide pipe, gunn pipe, carcinotron oscillator directly to shake generation continuous wave output power, and two is utilize frequency multiplication mode to obtain higher frequency signal.A kind of front method can obtain great power output, but bulky, the life-span is short, unstable properties, and need very high supply power voltage etc. to lack all limit its application.Then a kind of method can be chosen due to its output frequency on the N subharmonic of incoming frequency, and thus required input signal source can be selected to make in the frequency range of Technical comparing maturation, thus the frequency stability needed for guarantee provides condition with characteristic of making an uproar mutually.
At present owing to lacking stable, reliable terahertz signal source, the development of Terahertz Technology is very restricted, and therefore researches and develops high performance novel Terahertz frequency multiplier and has very positive and important meaning.With regard to the research conditions of domestic current Terahertz Technology, lack and there is the low and portable frequency multiplier of high power, cost to obtain the main factor that terahertz signal source is the application of restriction THz wave technology.Therefore, develop high, that cost the is low development of THz wave frequency multiplier to THz wave technology of power and play vital effect.And our times various countries all carry out the research and development of Terahertz frequency range in brute force, seize the communication resource of Terahertz frequency range.Under the traction of application demand, external existing multiple seminar has carried out the research adopting millimeter wave solid-state circuit frequency multiplication to realize THz source.This technology mainly utilizes microwave, the millimetre-wave generator that frequency is lower, then employing utilizes the method for Schottky diode frequency multiplication to obtain THz source, and this is also the main method obtaining THz source at present both at home and abroad.Present Domestic mainly studies Terahertz secondary solid-state frequency multiplier and No. three solid-state frequency multipliers, then concern is lacked to high order solid-state frequency multiplier, this just causes the lifting along with Terahertz frequency range, required local frequency is more and more higher, also more and more higher to the requirement of local oscillator input, thus cause the significantly lifting of cost.The research of Terahertz efficient even solid-state frequency multiplier technology contributes to reducing the requirement to local oscillator input, effectively reduces cost, thus meets growing Terahertz frequency range demand.
Utility model content
The utility model object is the problem of the Terahertz even harmonics frequencies signal source lacking efficient stable for prior art, and provide a kind of structure simple, working band is wide, the Terahertz even solid-state frequency multiplier of efficient stable.
Above-mentioned purpose of the present utility model can be achieved by the following technical programs, a kind of Terahertz even solid-state frequency multiplier, comprise standard input rectangular waveguide 1, Schottky diode 3, DC feedback low pass filter 5, it is characterized in that: external radio-frequency signal enters Schottky diode 3 by standard rectangular waveguide 1 through subtracting wide waveguide 2, Schottky diode carries out frequency conversion to input first-harmonic, produce even-order harmonic, through Terahertz band pass filter 4, the clutter outside required even-order harmonic component is filtered again, produced even harmonics frequencies signal is exported by standard waveguide 6.
The utility model has following beneficial effect compared to other Terahertz solid-state frequency multiplier structure:
Low to the requirement of local oscillator input frequency signal.The utility model have employed the mode of even frequency multiplication to produce order harmonic frequencies component, and compared to other Terahertz low order solid-state frequency multiplier version, the frequency requirement of required local oscillator input signals is lower, also more easily realizes.
Structure is more simple, reliable, and efficiency is higher, more stable.The utility model have employed balance type structure form, effectively can eliminate odd harmonics, exports this harmonic wave even.At diode output by increasing Terahertz band pass filter, can effectively filter first-harmonic or low-order harmonic component, simultaneously by the impedance matching of output waveguide, thus realize stable power stage, this is the guided wave structure formed very difficult realization of existing Terahertz.And if need to adopt the mode of secondary frequency multiplication to produce frequency signal, Terahertz band pass filter can be removed, just can well produce second harmonic component.The utility model solves the difficult problem that terahertz signal source efficient, stable in engineer applied realizes.
The utility model, by the distance of adjustment Terahertz band pass filter 4 to Schottky diode 3, can improve the power that filter exports required even harmonics frequencies component, suppress the output of assorted harmonics frequency component further.
The utility model adopts low local frequency to input, and realizes even harmonics frequencies component and exports, have high efficiency, stable feature, thus promote the efficiency of the launching and receiving of terahertz signal.
The radiofrequency signal that utility model is specially adapted to realize 0.1THz ~ 0.5THz Terahertz frequency range exports.
Accompanying drawing explanation
Fig. 1 is the STRUCTURE DECOMPOSITION schematic diagram of the even solid-state frequency multiplier of the utility model Terahertz frequency range.
In figure: 1 standard input rectangular waveguide, 2 subtract wide waveguide, 3 Schottky diodes, 4 Terahertz band pass filters, 5 DC feedback low pass filters, 6 outputting standard rectangular waveguides.
Embodiment
Consult Fig. 1.In embodiment described below, Terahertz even solid-state frequency multiplier comprises: standard input rectangular waveguide 1, subtract wide waveguide 2, Schottky diode 3, Terahertz band pass filter 4, DC feedback low pass filter 5, outputting standard rectangular waveguide 6, wherein, standard input rectangular waveguide 1 front end is connected and subtracts wide waveguide 2, Schottky diode 3 to be connected Terahertz band pass filter 4 and DC feedback low pass filter 5 by subtracting wide waveguide 2 cavity, outputting standard rectangular waveguide 6 is perpendicular through subtracting wide waveguide 2 cavity, connect firmly between Terahertz band pass filter 4 and DC feedback low pass filter 5.Schottky diode 3 be welded on subtract wide waveguide 2 chamber central circuit substrate on.Schottky diode two ends pin is welded on to subtract on wide wave guide wall and forms ground connection.Schottky diode 3 is multitube opposing series configuration form.Input signal is with TE
10mould is directly coupled to Schottky diode pair, by reducing the width of cavity, making formed to subtract the characteristic that wide waveguide has high pass filter, thus suppressing the fundamental frequency signal of input to continue to propagate.Be reflected back when fundamental signal arrives and subtracts the short circuit face of wide waveguide, be again coupled to Schottky diode to upper.The position of Schottky diode is in the middle part subtracting wide waveguide, when practical application, should according to concrete input fundamental frequency, and by emulating thus determining that Schottky diode is in the final position subtracted in wide waveguide.
External radio-frequency signal is inputted by standard rectangular waveguide 1, Schottky diode 3 is entered by subtracting wide waveguide 2, Schottky diode carries out frequency conversion to input first-harmonic, produce even-order harmonic, then enter Terahertz band pass filter 4, the clutter outside required even-order harmonic component is filtered; External dc power DC carries out feed excitation by DC feedback low pass filter 5 pairs of Schottky diodes 3, promotes the operating efficiency of Schottky diode.The even harmonics frequencies signal produced exports finally by standard waveguide 6.Adjustment subtracts the distance of wide waveguide 2 short circuit face to Schottky diode 3, and Schottky diode 3 is to the distance of standard input waveguide mouth, thus the reflection coefficient of adjustment input port, improve standing wave.
Concrete enforcement can adopt following steps:
(1), according to Terahertz circuit band requirement, determine the size inputting rectangular waveguide, select suitable dielectric substrate broadband, thus the width subtracting wide waveguide can be determined, utilize microwave circuit CASE(Computer Aided Software Engineering), to Terahertz band pass filter to the distance of Schottky diode and subtract wide waveguide length setting needed for transmission characteristic design object, by the Optimized Program of software, thus determine the parameter inputting each unit.
(2), to output, comprise DC feedback low pass filter, outputting standard rectangular waveguide, carry out matching optimization.Utilize microwave circuit CASE(Computer Aided Software Engineering), to the transmission characteristic design object needed for filter to the distance of output waveguide and the size setting of middle microstrip transmission line, by the Optimized Program of software, thus determine the parameter inputting each unit.
(3), by importation and output carry out associative simulation, determine the structure of last Terahertz frequency range solid-state frequency multiplier.
Claims (6)
1. a Terahertz even solid-state frequency multiplier, comprise standard input rectangular waveguide (1), Schottky diode (3), DC feedback low pass filter (5), it is characterized in that: external radio-frequency signal enters Schottky diode (3) by standard rectangular waveguide (1) through subtracting wide waveguide (2), Schottky diode carries out frequency conversion to input first-harmonic, produce even-order harmonic, through Terahertz band pass filter (4), the clutter outside required even-order harmonic component is filtered again, produced even harmonics frequencies signal is exported by standard waveguide (6).
2. Terahertz even solid-state frequency multiplier as claimed in claim 1, it is characterized in that: subtract wide waveguide (2) waveguide short face to the distance of Schottky diode (3) and Schottky diode (3) to the distance of standard input waveguide mouth by adjustment, thus the reflection coefficient of adjustment input port, improve standing wave.
3. Terahertz even solid-state frequency multiplier as claimed in claim 1, it is characterized in that: standard input rectangular waveguide (1) front end is connected and subtracts wide waveguide (2), Schottky diode (3) to be connected Terahertz band pass filter (4) and DC feedback low pass filter (5) by subtracting wide waveguide (2) cavity, outputting standard rectangular waveguide (6), perpendicular through subtracting wide waveguide (2) cavity, connects firmly between Terahertz band pass filter (4) and DC feedback low pass filter (5).
4. Terahertz even solid-state frequency multiplier as claimed in claim 1, is characterized in that: Schottky diode (3) be welded on subtract wide waveguide (2) chamber central circuit substrate on.
5. Terahertz even solid-state frequency multiplier as claimed in claim 1, is characterized in that: Schottky diode two ends pin is welded on to subtract on wide wave guide wall and forms ground connection.
6. Terahertz even solid-state frequency multiplier as claimed in claim 1, is characterized in that: the diode pair that Schottky diode (3) is multitube opposing series configuration form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520705550.3U CN204948027U (en) | 2015-09-13 | 2015-09-13 | Terahertz even solid-state frequency multiplier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520705550.3U CN204948027U (en) | 2015-09-13 | 2015-09-13 | Terahertz even solid-state frequency multiplier |
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| CN204948027U true CN204948027U (en) | 2016-01-06 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359861A (en) * | 2017-06-01 | 2017-11-17 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | High-order odd harmonic THz sources frequency multiplier |
| CN107483018A (en) * | 2017-07-10 | 2017-12-15 | 中国电子科技集团公司第十三研究所 | Terahertz even balanced type frequency multiplier |
| CN109870831A (en) * | 2019-03-25 | 2019-06-11 | 电子科技大学 | A kind of direct modulator of containment portion loaded type adjustable metal line THz wave |
| CN110932672A (en) * | 2019-11-18 | 2020-03-27 | 东南大学 | Full-band terahertz quadrupler module |
| CN111030600A (en) * | 2018-10-09 | 2020-04-17 | 中国科学院国家空间科学中心 | Active bias terahertz harmonic mixer |
| CN113315473A (en) * | 2021-05-28 | 2021-08-27 | 中电科思仪科技股份有限公司 | Terahertz frequency doubling source and working method thereof |
-
2015
- 2015-09-13 CN CN201520705550.3U patent/CN204948027U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359861A (en) * | 2017-06-01 | 2017-11-17 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | High-order odd harmonic THz sources frequency multiplier |
| CN107359861B (en) * | 2017-06-01 | 2023-06-13 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | High-order odd harmonic THz source frequency multiplier |
| CN107483018A (en) * | 2017-07-10 | 2017-12-15 | 中国电子科技集团公司第十三研究所 | Terahertz even balanced type frequency multiplier |
| CN111030600A (en) * | 2018-10-09 | 2020-04-17 | 中国科学院国家空间科学中心 | Active bias terahertz harmonic mixer |
| CN111030600B (en) * | 2018-10-09 | 2023-05-16 | 中国科学院国家空间科学中心 | Active bias terahertz harmonic mixer |
| CN109870831A (en) * | 2019-03-25 | 2019-06-11 | 电子科技大学 | A kind of direct modulator of containment portion loaded type adjustable metal line THz wave |
| CN110932672A (en) * | 2019-11-18 | 2020-03-27 | 东南大学 | Full-band terahertz quadrupler module |
| CN110932672B (en) * | 2019-11-18 | 2020-07-24 | 东南大学 | Full-band terahertz quadrupler module |
| CN113315473A (en) * | 2021-05-28 | 2021-08-27 | 中电科思仪科技股份有限公司 | Terahertz frequency doubling source and working method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20190913 |
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| CF01 | Termination of patent right due to non-payment of annual fee |