CN204206139U - A kind of negative group delay circuitry - Google Patents
A kind of negative group delay circuitry Download PDFInfo
- Publication number
- CN204206139U CN204206139U CN201420432252.7U CN201420432252U CN204206139U CN 204206139 U CN204206139 U CN 204206139U CN 201420432252 U CN201420432252 U CN 201420432252U CN 204206139 U CN204206139 U CN 204206139U
- Authority
- CN
- China
- Prior art keywords
- microstrip line
- group delay
- coupler
- negative group
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000010295 mobile communication Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- Y02B60/50—
Landscapes
- Amplifiers (AREA)
- Microwave Amplifiers (AREA)
Abstract
The utility model discloses a kind of negative group delay circuitry, this circuit structure is by three-dB coupler, distributed Microstrip line and series connection
resonant element and complex impedance realize.The utility model can be widely used in 5G power of mobile communication amplifier front-end, radar antenna feed etc. to the strict place of signal performance requirement.Effectively can reduce the progression of circuit power amplifier, and passband external noise can be reduced, improve the stability of electronic circuit.Meanwhile, compare the negative group delay circuitry of other structures, the utility model stability is high, volume is little, processing is simple, applied widely.
Description
Technical field
The utility model belongs to communication and electronic application field, particularly in radio frequency and filter network, has important application.
Background technology
In the last few years, a series of research about group delay circuitry negative in radio frequency and filter network had been carried out both at home and abroad.Achieve a lot of achievement in research, be especially used in mobile communication technology, be used in power-amplifier front-end and radar antenna feed part, negative group delay circuitry effectively can solve that system linear degree is low, narrow bandwidth, problem that passband external noise is large.But its project organization can only use in specific frequency range, and bandwidth is less, signal attenuation is comparatively large, causes the number having to increase power amplifier, and make system bulk comparatively large, versatility is not strong.Simultaneously traditional negative group delay circuitry is due to the problem of its circuit structure, and make temperature sensitivity extremely strong, applicability is very limited.The utility model, for above problem, can effectively solve, and to meet system requirements, and stability is high, volume is little, processing is simple, applied widely.
Summary of the invention
The utility model provides a kind of and has negative group delay, structure is simple, multiband, volume are little, stability is high negative group delay circuitry.
The technical scheme realizing the utility model object is: a kind of negative group delay circuitry, comprises input port 1, output port 2,
the first main circuit unit that coupler, structure are identical and the second main circuit unit; Wherein each main circuit unit is by a complex impedance, two sections of microstrip lines and a series resonance unit composition; First main circuit unit is connected with coupler, complex impedance in unit
one end is connected with coupler, other end ground connection; Microstrip line
one end and impedance
connect, the other end and resonance
unit connects;
resonant element is by resistance R
1, inductance L
1, electric capacity C
1be in series, two ends respectively with microstrip line
and microstrip line
connect; Microstrip line
with
resonant element is connected; Second main circuit unit is connected with coupler, complex impedance in unit
one end is connected with coupler, other end ground connection; Microstrip line
one end and impedance
connect, the other end and resonance
unit connects;
resonant element is by resistance R
2, inductance L
2, electric capacity C
2be in series, two ends respectively with microstrip line
and microstrip line
connect; Microstrip line
with
resonant element is connected; Input port 1 and output port 2 all connect 50 ohmages.
Compared with prior art, the utility model provides a kind of and has negative group delay, structure is simple, multiband, volume are little, stability is high feature.
Accompanying drawing explanation
Fig. 1 is the negative group delay of the utility model one
series resonance unit.
Fig. 2 is the negative group delay of the utility model one
series resonance returns response.
Fig. 3 is the negative group delay of the utility model one
series resonance phase curve.
Fig. 4 is the negative group delay circuitry structural representation of the utility model one.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Composition graphs 1, Fig. 4, the utility model is a kind of negative group delay circuitry, comprises input port 1, output port 2,
the first main circuit unit that coupler, structure are identical and the second main circuit unit; Wherein each main circuit unit is by an impedance, two sections of microstrip lines and series resonance unit (as shown in Figure 1) composition, and series resonance unit returns response as shown in Figure 2, and its phase curve as shown in Figure 3; First main circuit unit is connected with coupler, unit internal impedance
one end is connected with coupler, other end ground connection; Microstrip line
one end and impedance
connect, the other end and resonance
unit connects;
resonant element is by resistance R
1, inductance L
1, electric capacity C
1be in series, two ends respectively with microstrip line
and microstrip line
connect; Microstrip line
with
resonant element is connected; Second main circuit unit is connected with coupler, unit internal impedance
one end is connected with coupler, other end ground connection; Microstrip line
one end and impedance
connect, the other end and resonance
unit connects;
resonant element is by resistance R
2, inductance L
2, electric capacity C
2be in series, two ends respectively with microstrip line
and microstrip line
connect; Microstrip line
with
resonant element is connected; Input port 1 and output port 2 all connect 50 ohmages.
When all Parameters variation, now maximum negative group delay reaches-10ns, and centre frequency is 3.62GHz, and bandwidth is 200MHz.This result, much smaller than conventional negative group delay circuitry, effectively can reduce the number of power amplifier, and result represents that utility model design performance is good, can meet the requirement of system.
The utility model is a kind of negative group delay circuitry, and composition graphs 4, its operation principle is summarized as follows: the agent structure that a kind of modified model bears group delay circuitry is made up of a 3dB coupler.After signal enters input main circuit, can by the microstrip line in adjustment main circuit and impedance
size, and series resonance unit (
) change institute's frequency range, utilize coupler principle, couple a signal to output port, thus achieve negative group delay effect, particularly in radio frequency and filter network, there is important application.
Claims (1)
1. a negative group delay circuitry, is characterized in that: comprise the first identical main circuit unit of input port 1, output port 2, three-dB coupler, structure and the second main circuit unit; Wherein each main circuit unit is by a complex impedance, two sections of microstrip lines and a series resonance unit composition; First main circuit unit is connected with coupler, unit internal impedance Z
1one end is connected with coupler, other end ground connection; Microstrip line T
1one end and impedance Z
1connect, the other end and resonance R
1l
1c
1unit connects; R
1l
1c
1resonant element is in series by resistance R1, inductance L 1, electric capacity C1, two ends respectively with microstrip line T
1with microstrip line T
2connect; Microstrip line T
2with R
1l
1c
1resonant element is connected; Second main circuit unit is connected with coupler, unit internal impedance Z
2one end is connected with coupler, other end ground connection; Microstrip line T
3one end and impedance Z
2connect, the other end and resonance R
2l
2c
2unit connects; R
2l
2c
2resonant element is in series by resistance R2, inductance L 2, electric capacity C2, two ends respectively with microstrip line T
3with microstrip line T
4connect; Microstrip line T4 and R
2l
2c
2resonant element is connected; Input port 1 and input port 2 all connect 50 ohmages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420432252.7U CN204206139U (en) | 2014-08-03 | 2014-08-03 | A kind of negative group delay circuitry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420432252.7U CN204206139U (en) | 2014-08-03 | 2014-08-03 | A kind of negative group delay circuitry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204206139U true CN204206139U (en) | 2015-03-11 |
Family
ID=52664050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420432252.7U Expired - Fee Related CN204206139U (en) | 2014-08-03 | 2014-08-03 | A kind of negative group delay circuitry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204206139U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143971A (en) * | 2014-08-03 | 2014-11-12 | 王少夫 | Negative group delay circuit |
| CN107546450A (en) * | 2017-07-23 | 2018-01-05 | 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 circuitry based on ferrite toroidal device |
| CN108777567A (en) * | 2018-05-23 | 2018-11-09 | 大连海事大学 | A Dual Frequency Negative Group Delay Microwave Circuit with Arbitrary Frequency Ratio |
-
2014
- 2014-08-03 CN CN201420432252.7U patent/CN204206139U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143971A (en) * | 2014-08-03 | 2014-11-12 | 王少夫 | Negative group delay circuit |
| CN107546450A (en) * | 2017-07-23 | 2018-01-05 | 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 circuitry based on ferrite toroidal device |
| 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 |
| CN108777567A (en) * | 2018-05-23 | 2018-11-09 | 大连海事大学 | A Dual Frequency Negative Group Delay Microwave Circuit with Arbitrary Frequency Ratio |
| CN108777567B (en) * | 2018-05-23 | 2022-02-11 | 大连海事大学 | A Dual Frequency Negative Group Delay Microwave Circuit with Arbitrary Frequency Ratio |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150311 Termination date: 20150803 |
|
| EXPY | Termination of patent right or utility model |