CN106654479A - Terahertz duplexer built by using waveguide filter - Google Patents
Terahertz duplexer built by using waveguide filter Download PDFInfo
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- CN106654479A CN106654479A CN201611237643.3A CN201611237643A CN106654479A CN 106654479 A CN106654479 A CN 106654479A CN 201611237643 A CN201611237643 A CN 201611237643A CN 106654479 A CN106654479 A CN 106654479A
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- waveguide
- filter
- pass filter
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
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Abstract
The invention provides a terahertz duplexer built by using a waveguide filter. The terahertz duplexer comprises a standard waveguide input end (17), a first standard waveguide output end (15), a second standard waveguide output end (16), a high-pass filter (19), a band-pass filter (18) and a T-shaped junction (20), wherein the standard waveguide input end (17) is formed by splicing an upper cavity (13) and a lower cavity (14); the standard waveguide input end (17) is connected with an input end of the T-shaped junction (20); an output end of the T-shaped junction (20) is connected with the high-pass filter (19) and the band-pass filter (18) in two paths; the output ends of the high-pass filter (19) and the band-pass filter (18) are connected with the first standard waveguide output end (15) and the second standard waveguide output end (16) respectively; and the cut-off frequency of the high-pass filter (19) is higher than an operating frequency range of the band-pass filter (18). The terahertz duplexer has the advantages of being small in volume and simple in structure, and is suitable for a microwave radiometer system of a small satellite platform.
Description
Technical field
The present invention relates to frequency splitting technology field, and in particular to the Terahertz duplexer that a kind of utilization waveguide filter builds.
Background technology
In recent years, in fields such as radio astronomy, Atmospheric Microwave remote sensing, both at home and abroad many Satellite-borne Detectors are gradually by work
Frequency upgrading is to terahertz wave band (electromagnetic wave of the frequency in the range of 0.1THz～10THz).For spaceborne terahertz emission meter,
Antenna system is its important component part, for the passive electromagnetic wave energy for receiving target emanation.At present, terahertz emission meter day
Linear system system is usual by the way of free space feed, i.e., quasi-optical feeding network.This needs a series of optical reflector, frequency
Separator, horn feed cascade, while coordinating solid surface antenna to realize the work of multiband.And it is directed to extreme weather observation imaging
Demand, it is necessary to which the microwave radiometer technology to being mounted in microsatellite platform launches research.Quasi-optical feedback widely used at present
Electric network, due to its complex structure, volume greatly, therefore it is certain tired to be applied to the radiometer system presence of microsatellite platform
It is difficult.
The content of the invention
It is an object of the present invention to design the duplexer of a kind of small volume, compact conformation realizing terahertz emission meter
The separation of system medium frequency, with reference to the construction featuress of above-mentioned radiometer system, it is proposed that what a kind of utilization waveguide filter built
Terahertz duplexer.The small volume of the Terahertz duplexer, simple structure, being associated in reception antenna rear end by level makes frequency point
From, and then realize the multiple channel operation of compact terahertz emission meter.
To achieve these goals, the invention provides a kind of Terahertz duplexer of utilization waveguide filter structure.
Described Terahertz duplexer includes standard waveguide input, band filter, high pass filter, T-shaped matching knot
Structure, two standard waveguide outfans；The Terahertz duplexer is divided into upper and lower two cavitys；Surface and lower chamber when upper cavity
Surface be brought into close contact and be screwed after, constitute whole duplexer；
Described upper cavity includes：It is first input waveguide mouth, the first output waveguide mouth, the 3rd output waveguide mouth, first high
Bandpass filter, the first band filter and the first T junction；Described lower chamber includes：Second input waveguide mouth, the second output wave
Lead mouth, the 4th output waveguide mouth, the second high pass filter, the second band filter and the second T junction；
The surface of described upper cavity is brought into close contact with the surface of lower chamber, wherein the first input waveguide mouth and the second input
Waveguide mouth constitutes standard waveguide input, and the first output waveguide mouth and the second output waveguide mouth constitute the first standard waveguide output
End, the 3rd output waveguide mouth and the 4th output waveguide mouth constitute the second standard waveguide outfan, the first high pass filter and second
High pass filter constitutes high pass filter, and the first band filter and the second band filter constitute band filter；First is T-shaped
Knot and the second T junction constitute T junction；
Described standard waveguide input is connected with the input of T junction, and the outfan point two-way connection of the T junction is high
It is defeated that the outfan of bandpass filter and band filter, the high pass filter and band filter connects respectively the first standard waveguide
Go out end and the second standard waveguide outfan；Operating frequency model of the cut-off frequency of the high pass filter higher than band filter
Enclose.
Used as the further improvement of above-mentioned technical proposal, described band filter is Stepped Impedance waveguide bandpass filtering
Device, its waveguide the widest part is 3.2mm, and the most narrow place of waveguide is 1mm.
Used as the further improvement of above-mentioned technical proposal, the length and width of the square-section of the high pass filter are respectively
0.93mm and 0.38mm.
Used as the further improvement of above-mentioned technical proposal, the T junction is H faces waveguide T junction.
As the further improvement of above-mentioned technical proposal, described standard waveguide input, the first standard waveguide outfan
Standard rectangular waveguide port is with the second standard waveguide outfan.
The present invention a kind of utilization waveguide filter build Terahertz duplexer advantage be：
The present invention has the advantages that small volume, simple structure using the Terahertz duplexer of waveguiding structure design, can be by
The terahertz signal of different frequency is separated, in can be used for compact feed system；Band logical filter is constituted using phase step type waveguide
Ripple device and high pass filter, so as to realize the separation of Terahertz frequency range signal, it is adaptable to the microwave radiometer of microsatellite platform
System.
Description of the drawings
Fig. 1 is that the upper and lower cavity body structure of the Terahertz duplexer that a kind of utilization waveguide filter of the present invention builds is illustrated
Figure.
Fig. 2 is the Terahertz duplexer combining structure schematic diagram that a kind of utilization waveguide filter of the present invention builds.
Accompanying drawing is identified：
1st, the first input waveguide mouth 2, the second input waveguide mouth
3rd, the first output waveguide mouth 4, the second output waveguide mouth
5th, the 3rd output waveguide mouth 6, the 4th output waveguide mouth
7th, the first high pass filter 8, the second high pass filter
9th, the first band filter 10, the second band filter
11st, the first T junction 12, the second T junction
13rd, upper cavity 14, lower chamber
15th, the first standard waveguide outfan 16, the second standard waveguide outfan
17th, standard waveguide input 18, band filter
19th, high pass filter 20, T junction
Specific embodiment
A kind of utilization waveguide filter of the present invention is built Terahertz duplex with reference to the accompanying drawings and examples
Device is described in detail.
As shown in figure 1, the invention provides a kind of Terahertz duplexer of utilization waveguide filter structure, the duplexer
Comprising upper cavity 13 and lower chamber 14；
The upper cavity 13 includes：First input waveguide mouth 1, the first output waveguide mouth 3, the 3rd output waveguide mouth 5, first
High pass filter 7, the first band filter 9 and the first T junction 11；
The lower chamber 14 includes the second input waveguide mouth 2, the second output waveguide mouth 4, the 4th output waveguide mouth 6, second
High pass filter 8, the second band filter 10 and the second T junction 12；
With reference to shown in Fig. 1,2, Terahertz duplexer is constituted after the upper cavity 13 and the surface fluid-tight engagement of lower chamber 14；Its
In the first input waveguide mouth 1 and the second input waveguide mouth 2 constitute standard waveguide input 17；First output waveguide mouth 3 and second
Output waveguide mouth 4 constitutes the first standard waveguide outfan 15；3rd output waveguide mouth 5 and the 4th output waveguide mouth 6 constitute second
Standard waveguide outfan 16；First high pass filter 7 and the second high pass filter 8 constitute high pass filter 19；First band logical is filtered
9 and second band filter of ripple device 10 constitutes band filter 18；First T junction 11 and the second T junction 12 constitute T junction 20；
Wherein, standard waveguide input 17 cascades the input of T junction 20；Respectively level is associated with height to the outfan of T junction 20
Bandpass filter 19 and band filter 18；The outfan of high pass filter 19 cascades the first standard waveguide outfan 15；Band logical is filtered
The outfan of ripple device 18 cascades the second standard waveguide outfan 16；The cut-off frequency of the high pass filter 19 is higher than band logical filter
The operating frequency range of ripple device 18.
In the present embodiment, when frequency is respectively the terahertz signal of 118GHz and 183GHz from standard waveguide input 17
After input, Jing T junctions 20 flow to band filter 18 and high pass filter 19；The mid frequency of the band filter 18 is
118GHz, its working band is 10GHz；Therefore it allows the terahertz signal of 118GHz via the second standard waveguide outfan 16
Output, while the terahertz signal for preventing 183GHz passes through；The cut-off frequency of the high pass filter 19 is 167GHz；Therefore its
The terahertz signal for allowing 183GHz is exported via the first standard waveguide outfan 15, while preventing the terahertz signal of 118GHz
Pass through；The working band of T junction 20 can be arranged on by 110GHz～190GHz according to the frequency of input signal.In the present embodiment
In, described band filter is Stepped Impedance waveguide bandpass filter, and its waveguide the widest part is 3.2mm, and the most narrow place of waveguide is
1mm, the band filter can be used to extract the low frequency signal in enter into duplexer two terahertz signals.The high pass filter
The length of the square-section of ripple device and wide respectively 0.93mm and 0.38mm, the high pass filter can be used for extraction and enter into duplexer
Two terahertz signals in high-frequency signal.Described T junction is H faces waveguide T junction, and T junction auxiliary realizes two signals
Separation.Described standard waveguide input, the first standard waveguide outfan and the second standard waveguide outfan are standard square
Shape waveguide port, standard waveguide port is convenient to dock with other modules.
Described duplexer realizes the separation of different frequency terahertz signal, whole circuit collection using guide filter mode
In Cheng Yi cavity module, there is small volume, simple structure, it is adaptable in compact feed system.
It should be noted last that, above example is only to illustrate technical scheme and unrestricted.Although ginseng
The present invention has been described in detail according to embodiment, it will be understood by those within the art that, the technical side to the present invention
Case is modified or equivalent, and without departure from the spirit and scope of technical solution of the present invention, it all should cover in the present invention
Right in the middle of.
Claims (5)
1. the Terahertz duplexer that a kind of utilization waveguide filter builds, it is characterised in that including upper cavity (13) and lower chamber
(14)；Described upper cavity (13) includes：First input waveguide mouth (1), the first output waveguide mouth (3), the 3rd output waveguide mouth
(5), the first high pass filter (7), the first band filter (9) and the first T junction (11)；Described lower chamber (14) includes：
Second input waveguide mouth (2), the second output waveguide mouth (4), the 4th output waveguide mouth (6), the second high pass filter (8), second
Band filter (10) and the second T junction (12)；
The surface of described upper cavity (13) is brought into close contact with the surface of lower chamber (14), wherein the first input waveguide mouth (1) and
Second input waveguide mouth (2) constitutes standard waveguide input (17), the first output waveguide mouth (3) and the second output waveguide mouth (4)
The first standard waveguide outfan (15) is constituted, the 3rd output waveguide mouth (5) and the 4th output waveguide mouth (6) constitute the second standard ripple
Outfan (16) is led, the first high pass filter (7) and the second high pass filter (8) constitute high pass filter (19), the first band logical
Wave filter (9) and the second band filter (10) constitute band filter (18)；First T junction (11) and the second T junction (12)
Constitute T junction (20)；
Described standard waveguide input (17) is connected with the input of T junction (20), and the outfan of the T junction (20) is divided to two
Road connection high pass filter (19) and band filter (18), the output of the high pass filter (19) and band filter (18)
End connects respectively the first standard waveguide outfan (15) and the second standard waveguide outfan (16)；The high pass filter (19)
Operating frequency range of the cut-off frequency higher than band filter (18).
2. the Terahertz duplexer that utilization waveguide filter according to claim 1 builds, it is characterised in that described band
Bandpass filter (18) is Stepped Impedance waveguide bandpass filter, and its waveguide the widest part is 3.2mm, and the most narrow place of waveguide is 1mm.
3. the Terahertz duplexer that utilization waveguide filter according to claim 1 builds, it is characterised in that the high pass
The length of the square-section of wave filter (19) and wide respectively 0.93mm and 0.38mm.
4. the Terahertz duplexer that utilization waveguide filter according to claim 1 builds, it is characterised in that described T
Type knot (20) is H faces waveguide T junction.
5. the Terahertz duplexer that utilization waveguide filter according to claim 1 builds, it is characterised in that described mark
Quasi-Waveguide input (17), the first standard waveguide outfan (15) and the second standard waveguide outfan (16) are standard rectangular ripple
Lead port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611237643.3A CN106654479A (en) | 2016-12-28 | 2016-12-28 | Terahertz duplexer built by using waveguide filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611237643.3A CN106654479A (en) | 2016-12-28 | 2016-12-28 | Terahertz duplexer built by using waveguide filter |
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| CN106654479A true CN106654479A (en) | 2017-05-10 |
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| CN201611237643.3A Pending CN106654479A (en) | 2016-12-28 | 2016-12-28 | Terahertz duplexer built by using waveguide filter |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611541A (en) * | 2017-08-28 | 2018-01-19 | 北京理工大学 | Terahertz waveguide duplexer based on bulk silicon MEMS technique and preparation method thereof |
| CN108183293A (en) * | 2017-12-11 | 2018-06-19 | 南京理工大学 | Plane micro-strip duplexer |
| CN109066026A (en) * | 2018-07-05 | 2018-12-21 | 南京信息工程大学 | A kind of Ka band dual channel duplexer suitable for multi-antenna array |
| CN109546275A (en) * | 2018-12-07 | 2019-03-29 | 中国船舶重工集团公司第七二四研究所 | A kind of high-performance isomery cavity Terahertz duplexer |
| CN111540990A (en) * | 2020-05-18 | 2020-08-14 | 中国人民解放军海军工程大学 | Microwave frequency-selecting device based on waveguide |
| CN114243246A (en) * | 2022-02-23 | 2022-03-25 | 电子科技大学 | Improved terahertz high-isolation E-surface power divider and application thereof |
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| CN102856615A (en) * | 2012-09-14 | 2013-01-02 | 电子科技大学 | Waveguide band-pass filter suitable for 380-390 GHz frequency range |
| CN104269587A (en) * | 2014-09-30 | 2015-01-07 | 电子科技大学 | Small-sized waveguide duplexer |
| CN105207624A (en) * | 2015-10-10 | 2015-12-30 | 中国科学院国家空间科学中心 | Terahertz frequency band local oscillation source based on frequency multiplication link circuit integrated structure |
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2016
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Patent Citations (3)
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| CN102856615A (en) * | 2012-09-14 | 2013-01-02 | 电子科技大学 | Waveguide band-pass filter suitable for 380-390 GHz frequency range |
| CN104269587A (en) * | 2014-09-30 | 2015-01-07 | 电子科技大学 | Small-sized waveguide duplexer |
| CN105207624A (en) * | 2015-10-10 | 2015-12-30 | 中国科学院国家空间科学中心 | Terahertz frequency band local oscillation source based on frequency multiplication link circuit integrated structure |
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| HUI-WEN YAO ET AL: ""Wide-Band Waveguide and ridge Waveguide T-Junctions for Diplexer Applications"", 《IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES》 * |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611541A (en) * | 2017-08-28 | 2018-01-19 | 北京理工大学 | Terahertz waveguide duplexer based on bulk silicon MEMS technique and preparation method thereof |
| CN108183293A (en) * | 2017-12-11 | 2018-06-19 | 南京理工大学 | Plane micro-strip duplexer |
| CN109066026A (en) * | 2018-07-05 | 2018-12-21 | 南京信息工程大学 | A kind of Ka band dual channel duplexer suitable for multi-antenna array |
| CN109066026B (en) * | 2018-07-05 | 2023-08-15 | 南京信息工程大学 | Ka-band double-channel duplexer applicable to multi-antenna array |
| CN109546275A (en) * | 2018-12-07 | 2019-03-29 | 中国船舶重工集团公司第七二四研究所 | A kind of high-performance isomery cavity Terahertz duplexer |
| CN111540990A (en) * | 2020-05-18 | 2020-08-14 | 中国人民解放军海军工程大学 | Microwave frequency-selecting device based on waveguide |
| CN111540990B (en) * | 2020-05-18 | 2021-03-09 | 中国人民解放军海军工程大学 | Microwave frequency-selecting device based on waveguide |
| CN114243246A (en) * | 2022-02-23 | 2022-03-25 | 电子科技大学 | Improved terahertz high-isolation E-surface power divider and application thereof |
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Application publication date: 20170510 |