CN103684332B - Distributed type adjustable negative group time-delay circuit - Google Patents
Distributed type adjustable negative group time-delay circuit Download PDFInfo
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- CN103684332B CN103684332B CN201310742621.2A CN201310742621A CN103684332B CN 103684332 B CN103684332 B CN 103684332B CN 201310742621 A CN201310742621 A CN 201310742621A CN 103684332 B CN103684332 B CN 103684332B
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- microstrip line
- negative group
- group time
- delay
- adjustable negative
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Abstract
The invention relates to a distributed type adjustable negative group time-delay circuit. The circuit structure is implemented by a distributed type microstrip line and a thin-film resistor. The distributed type adjustable negative group time-delay circuit effectively solves the problem that when in use most microwave devices generate positive group time-delay and then are deteriorated in system performance. The size of the negative group time-delay can be set according to specific needs, and thus achieving the adjustable function. The circuit structure strengthens insensitivity of resistance to temperature, and has good adaptability and high reliability. Meanwhile, the distributed type adjustable negative group time-delay circuit has wider bandwidth than RLC negative group time-delay circuit and active negative group time-delay circuit, and can achieve negative group time-delay function at different frequency bands; the distributed type adjustable negative group time-delay circuit can be widely applied to corresponding frequency band systems needing adjustable negative group time-delay.
Description
Technical field
The present invention relates to adjustable negative group time-delay, particularly a kind of distributed adjustable negative group time-delay.
Background technology
With the development of the systems such as microwave and millimeter wave communication, radar, especially mobile hand-held wireless communication terminal, individual soldier
Satellite mobile communication terminal, the military development with civilian multimode multiplex communication terminal, the requirement to device in system is all the more
Harsh.Wherein, a lot of microwave devices lead to systematic entirety can deteriorate so that terminal development speed due to producing positive group delay
Once slowed down.In recent years, many researcheres are puted forth effort to solve this problem both at home and abroad, and propose a series of solution, such as
Rlc bears group delay circuitry and active negative group delay circuitry, has promoted the development of negative group delay circuitry to a certain extent.But mesh
In front proposed method, shortcoming is more, as single in frequency range, bandwidth relative narrower, signal attenuation is larger, temperature sensitivity is big,
Unadjustable etc..
Content of the invention
Present invention aim at provide one kind to build using distributed original paper, there is negative group delay effect, structure is simple, can
The negative group delay of setting, the negative group delay that stabilized susceptibility is little, processing is simple, multiband, wider bandwidth, small volume, stability are high
Microwave circuit.
The technical scheme realizing the object of the invention is: a kind of distributed adjustable negative group time-delay, including input port
Port1, output port port2, input port coupling microstrip line, output port coupling microstrip line, n stage circuit units and n-1 level
Coupling microstrip line；Each of which stage circuit units include two sections of microstrip line tn-1 and tn-2 and a film resistor, tn-1 micro-strip
One end of line and coupling microstrip line connect, and one end of the other end of tn-1 microstrip line and tn-2 microstrip line connects, tn-2 microstrip line
The other end ground connection；One end of film resistor and tn-1 are connected with the junction point of tn-2, and the other end is grounded；N circuit unit it
Between by mate microstrip line connect；Input port port1 and output port port2 all connects 50 ohmages.
Compared with prior art, because the present invention is processed using distributed Microstrip line structure and film resistor, carried
The remarkable advantage coming is: it is adjustable that (1) bears group delay；(2) bandwidth is adjustable；(3) temperature sensitivity is low；(4) small volume；(5) easy
Processing；(6) stability is high；(7) frequency range is controlled；(8) suitability extensively, is applicable to the various systems harsh to performance requirement
In.
Brief description
Fig. 1 is a kind of distributed adjustable negative group time-delay structural representation of the present invention.
Fig. 2 is a kind of negative group delay performance chart of distributed adjustable negative group time-delay of the present invention.
Fig. 3 is a kind of signal s curve chart of distributed adjustable negative group time-delay of the present invention.
Fig. 4 is a kind of distributed adjustable negative group time-delay temperature-insensitive schematic diagram of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail.
In conjunction with Fig. 1, the present invention is a kind of distributed adjustable negative group time-delay, and here chooses the negative group delay electricity of l wave band
Road, as example, is described.This new distribution type adjustable negative group time-delay, including input port port1, output port
Port2, input port coupling microstrip line, output port coupling microstrip line, n stage circuit units and n-1 level coupling microstrip line；Wherein
Each stage circuit units include two sections of microstrip line tn-1 and tn-2 and a film resistor, and one end of tn-1 microstrip line and coupling are micro-
Band wire connects, and one end of the other end of tn-1 microstrip line and tn-2 microstrip line connects, the other end ground connection of tn-2 microstrip line；Thin film
One end of resistance and tn-1 are connected with the junction point of tn-2, and the other end is grounded；Pass through between n circuit unit to mate microstrip line even
Connect；Input port port1 and output port port2 all connects 50 ohmages.
The size of film resistor can be changed to the size of negative group delay, thus reaching adjustable function.
In conjunction with Fig. 2, result during selection n=2 can reach -6ns as explanation, now maximum negative group delay, and band is a width of
57mhz, and pass through to change the size of n, thus it is possible to vary the size of group delay.Change the value of film resistor, bandwidth can be adjusted again
Size, very easily adjustment circuit performance, to meet performance requirement.
In conjunction with Fig. 3, result during selection n=2 is only 20db as explanation, now the signal attenuation maximum of circuit, this
Result is far smaller than rlc circuit and active negative group delay circuitry.
In conjunction with Fig. 4, result during selection n=3 works as temperature change as explanation, now circuit for the insensitivity of temperature
When ± 5%, its signal attenuation knots modification is only 1.7db, and this result is far smaller than rlc circuit and active negative group delay circuitry, fills
The temperature-insensitive of the bright present invention that defends oneself.
In conjunction with Fig. 1, the distributed adjustable negative group time-delay of the present invention, its operation principle is summarized as follows: distributed adjustable negative
The basic model of group delay circuitry is a band elimination filter with negative group delay effect, when the microwave signal of input is through defeated
Inbound port port1 enters circuit, enters main circuit by input coupling, and the series n of main circuit can negative group delay as needed
Setting, this embodies one of advantage of the present invention to Shi great little.The two sections of microstrip line sizes comprising in main circuit, are according to required
The frequency range wanted sets, and for being compared to the negative group delay circuitry of rlc and active negative group delay circuitry, microstrip line is easier to process
With change its size, thus be easier to set its frequency range as requested.Big by the film resistor in every grade of circuit of change
Little, amount of bandwidth can be adjusted, realize bandwidth controlled.When, after n level circuit, signal passes through output matching again, exports end
Mouth port2, thus realize adjustable negative group delay function.
Main circuit in the distributed adjustable negative group time-delay of the present invention is realized by microstrip line, and processing is simple, stability
Good, reliability is high.Because microstrip line arrangement can be to be realized using different forms, so that volume significantly reduces.
In conjunction with Fig. 2,3,4, the distributed adjustable negative group time-delay of the present invention, this circuit structure chooses two main circuit lists
Unit, mid frequency is chosen at 1.96ghz, emulates this circuit and obtains negative group delay and is -6ns to the maximum, and signal attenuation maximum is only
20db, during temperature change ± 5%, its signal attenuation knots modification is only 1.7db, and above index is superior to like product, shows pole
Good performance.
Claims (4)
1. a kind of distributed adjustable negative group time-delay it is characterised in that: include input port port1, output port port2,
Input port coupling microstrip line, output port coupling microstrip line, n stage circuit units and n-1 level coupling microstrip line；Each of which level
Circuit unit includes two sections of microstrip line tn-1 and microstrip line tn-2 and a film resistor, and one end of microstrip line tn-1 and coupling are micro-
Band wire connects, and one end of the other end of microstrip line tn-1 and microstrip line tn-2 connects, the other end ground connection of microstrip line tn-2；Thin film
One end of resistance and microstrip line tn-1 are connected with the junction point of microstrip line tn-2, and the other end is grounded；Pass through between n circuit unit
Coupling microstrip line connects；Input port port1 and output port port2 all connects 50 ohmages.
2. distributed adjustable negative group time-delay according to claim 1 it is characterised in that: n series in n stage circuit units
Size determines, bandwidth width becomes positive correlation with the size of n, in microwave circuit field according to required negative group delay Time Bandwidth
The value of n is not more than 5.
3. distributed adjustable negative group time-delay according to claim 1 it is characterised in that: input port port1, output
Port port2, input port coupling microstrip line, output port coupling microstrip line, n stage circuit units are planar structure, adopt
The microstrip line of distributed constant is realized.
4. the distributed adjustable negative group time-delay according to claim 1 or 3 it is characterised in that: circuit structure can be in 1-
Negative group delay is realized in 10ghz frequency range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310742621.2A CN103684332B (en) | 2013-12-30 | 2013-12-30 | Distributed type adjustable negative group time-delay circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310742621.2A CN103684332B (en) | 2013-12-30 | 2013-12-30 | Distributed type adjustable negative group time-delay circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103684332A CN103684332A (en) | 2014-03-26 |
| CN103684332B true CN103684332B (en) | 2017-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310742621.2A Expired - Fee Related CN103684332B (en) | 2013-12-30 | 2013-12-30 | Distributed type adjustable negative group time-delay circuit |
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| CN (1) | CN103684332B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143971A (en) * | 2014-08-03 | 2014-11-12 | 王少夫 | Negative group delay circuit |
| CN104202009A (en) * | 2014-09-03 | 2014-12-10 | 王少夫 | Distributed matching circuit |
| CN104852700A (en) * | 2015-06-12 | 2015-08-19 | 王少夫 | Zero-adjustment group delay circuit |
| CN105978531A (en) * | 2016-05-09 | 2016-09-28 | 复旦大学 | Real time time-delay phase shifter based on negative group delay compensation |
| CN107546450B (en) * | 2017-07-23 | 2020-03-31 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Negative group delay circuit based on ferrite circulator |
| CN107508572B (en) * | 2017-08-07 | 2021-01-15 | 大连海事大学 | Broadband negative group time delay microwave circuit based on distributed parameter realization |
| CN112202419B (en) * | 2020-09-30 | 2023-12-08 | 大连海事大学 | Three-frequency negative group delay microwave circuit |
| CN112564671B (en) * | 2020-11-25 | 2023-01-31 | 电子科技大学 | In-band ultra-low group delay fluctuation filter |
-
2013
- 2013-12-30 CN CN201310742621.2A patent/CN103684332B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN103684332A (en) | 2014-03-26 |
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| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Dai Yongsheng Inventor after: Deng Liang Inventor after: Chen Xiangzhi Inventor after: Li Yan Inventor before: Deng Liang Inventor before: Chen Xiangzhi Inventor before: Li Yan Inventor before: Dai Yongsheng |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: DENG LIANG CHEN XIANGZHI LI YAN DAI YONGSHENG TO: DAI YONGSHENG DENG LIANG CHEN XIANGZHI LI YAN |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170201 Termination date: 20191230 |