CN206564308U - A kind of work device of Mini Microstrip four - Google Patents
A kind of work device of Mini Microstrip four Download PDFInfo
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- CN206564308U CN206564308U CN201720130958.1U CN201720130958U CN206564308U CN 206564308 U CN206564308 U CN 206564308U CN 201720130958 U CN201720130958 U CN 201720130958U CN 206564308 U CN206564308 U CN 206564308U
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Abstract
The utility model discloses a kind of work device of Mini Microstrip four, including input port, first, second, third and fourth output port, cross resonator, first, second, third and fourthth, five step electric impedance resonator, first and second split ring resonator with 1/2nd wavelength, with quarter-wave first short-circuit resonant device, the first open-circuit resonant device with 1/2nd wavelength；Cross resonator produces resonance in three different frequencies, three frequency three passages of correspondence, respectively first and second, four-way, three passages share same input port and cross resonator, and third channel is independently introduced using distributed couplings at the feeder line of input port.The utility model can realize good filtering characteristic and small size performance.
Description
Technical field
The utility model is related to the technical field of high-frequency element, refers in particular to a kind of work device of Mini Microstrip four.
Background technology
Due to the high speed development of radio communication in recent years, the either popularization of 4G technologies, the burning hot of Internet of Things or 5G
Arrive, all indicate wireless technology and a booming peak period will be welcome.Wireless communication system of today, is substantially
The system of multiplexing, for time division duplex, is arranged in different timeslices and can just solve problem as long as will receive with sending out, and for
Frequency Division Multiplex, then needs the special device of design to make the electromagnetism of different frequency to reduce the quantity of antenna so as to save cost
Ripple shares common antenna without causing interference mutually, and such device is exactly multiplexer.And with the development of the communication technology, wirelessly
Performance requirement also more and more higher, miniaturization, Wide stop bands, high isolation, easily low cost, the design communicated for multiplexer, all turns into
Evaluate one of standard of a multiplexer performance.
Multiplexer, is typically all along with several bandpass filters are constituted by a matching network.Bandpass filter is real
Existing frequency selection and matching network then realize isolating between matching and passage of each passage with port.With a four work devices
Exemplified by, if each passage of four works device is Chebyshev's band-pass response of three ranks, generally requires a matching network and add
Upper 12 resonators, it is so that the size for making multiplexer is larger and add production cost.And by making three bandpass filterings
The public three mould resonators of device, can reduce by two resonators, and common resonant device can also realize matching network
Function, the size of such four works device is possible to greatly reduce, and application surface also will be wider.
Prior art is investigated, it is specific as follows：
2013, Shi-Shan Luo, Ko-Wen Hsu, and Wen-Hua Tu et al. were in " Asia-Pacific
Microwave Conference Proceeding " on deliver entitled " ComPact and High-Isolation
Multimode resonator and step electric impedance resonator are used in MicrostriP QuadruPlexer " article, text, using distribution
Coupling, forms a four work devices, and the four works device compact conformation but the four works device median filter are only second order, smaller bandwidth and
Isolation and stopband characteristic are not all provided.
2013, Wei-Chung Hung, Ko-Wen Hsu, and Wen-Hua Tu et al. were in " 2013IEEE MTT-S
International Microwave SymPosium Digest " on deliver entitled " Wide-StoPband MicrostriP
QuadruPlexer Using Asymmetric StePPed-ImPedance Resonators " article, is hindered using ladder
Antiresonance device and distributed common feeder, form a four work devices, the structure has the characteristic of Wide stop bands but size is larger,
There is 0.18 λ2。
Generally speaking, the multiplexer combined at present by bandpass filter designs comparative maturity, with modern portable
The development of formula wireless electronic product, miniaturization, cost is low, high frequency becomes the mark of duplexer research to and micro-strip multiplexer
These requirements can just be met.In terms of miniaturization, the researcher of various countries all did many work, and one of which method is just
It is to use common resonant device.But wherein overwhelming majority research is all based on duplexer and done, in terms of multiplexer it is few again
Few, stopband characteristic is good simple and compact for structure less.
The content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art and shortcoming, it is proposed that a kind of work of Mini Microstrip four
Device, can realize good filtering characteristic and stopband characteristic, and compact conformation, with flexible design, small volume, cost it is low,
The advantages of Wide stop bands.
To achieve the above object, technical scheme provided by the utility model is：A kind of work device of Mini Microstrip four, including
Input port, the first output port, the second output port, the 3rd output port, the 4th output port, cross resonator,
The terraced electric impedance resonator of one step electric impedance resonator, the second step electric impedance resonator, the 3rd step electric impedance resonator, fourth order, the
Five step electric impedance resonators, first, second split ring resonator with 1/2nd wavelength, with quarter-wave first
Short-circuit resonant device, the first open-circuit resonant device with 1/2nd wavelength；The cross resonator can be different at three
Frequency produces resonance, and three frequency three passages of correspondence, respectively first passage, second channel, fourth lane, three passages are total to
With same input port and cross resonator, the centre frequency of three passages can be by adjusting the short of cross resonator
The length of road transversal and open stub is adjusted, and by independently being introduced using distributed couplings at the feeder line of input port
Third channel；Input port that the first passage is coupled successively by order, cross resonator, the first short-circuit resonant device, the
One open-circuit resonant device, the first output port are constituted, input port, cross resonance that the second channel is coupled successively by order
Device, the first step electric impedance resonator, the second step electric impedance resonator, the second output port are constituted, and the third channel is by order
The terraced electric impedance resonator of the input port that couples successively, the 3rd step electric impedance resonator, fourth order, the 5th step electric impedance resonator,
3rd output port is constituted, and the fourth lane is by the input port sequentially coupled successively, cross resonator, the first opening resonance
Ring, the second split ring resonator, the 4th output port are constituted.
The cross resonator, the first short-circuit resonant device, the first open-circuit resonant device, first, second, third and fourth, five stepped impedances
Resonator reduces size using bending structure.
Grounding through hole is offered on the cross resonator, the first short-circuit resonant device, is short-circuit end.
The first short-circuit resonant device, the first open-circuit resonant device are operated at 2.4GHz, first, second stepped impedance
Resonator basic mode is 3.5GHz, and the three, the four, the 5th step electric impedance resonator basic mode is to be opened in 4.2GHz, first, second
Mouth resonant ring is operated at 5.2GHz, and each passage is three rank Chebyshevs response.
Second output port, the 3rd output port use tap coupler structure.
The input port, the first output port, the second output port, the 3rd output port, the 4th output port are
50 ohm of impedance matching.
The utility model compared with prior art, has the following advantages that and beneficial effect：
1st, by introducing common resonant device, reduced while good filtering performance is realized resonator quantity and
The design of matching network is avoided, size is effectively reduced and shortens the design cycle, the structure is easier to application.
2nd, being used in mixed way by cross resonator and polytype resonator, is ensureing their fundamental resonance frequencies phases
With in the case of, their higher mode is set to stagger, so as to realize a preferable stopband characteristic, this in actual applications will
The suppression to high-frequency noise is realized well.
3rd, the Work tool of Mini Microstrip four of the present utility model has compared with low insertion loss, good with outer selectivity, and filtering is special
The characteristics of property is good.
4th, because the work device of Mini Microstrip four of the present utility model is microstrip structure, lightweight, cost is low, be adapted to industry batch
Amount production.
Brief description of the drawings
Fig. 1 is the structural representation of the work device of Mini Microstrip four of the present utility model.
Fig. 2 is the scattering parameter simulation result of the work device of Mini Microstrip four of the present utility model.
Fig. 3 is the parameters simulation result of the isolation strip of the work device of Mini Microstrip four of the present utility model.
Fig. 4 is the stopband characteristic simulation result of the work device of Mini Microstrip four of the present utility model.
Embodiment
The utility model is described further with reference to specific embodiment.
The work device of Mini Microstrip four that the present embodiment is provided is based primarily upon cross resonator, makes cross resonator point
Not in three different frequency resonance, it is set to be shared by three passbands, remaining one can be with passband independent design.It is each logical
Other resonators of band voluntarily can be selected and designed.
Shown in Figure 1, the work device of Mini Microstrip four of the present embodiment is produced on two-sided cover in the manner of a printed circuit board
On copper micro-strip plate, micro-strip plate is in addition simultaneously to cover copper earth plate.The work device of Mini Microstrip four of the present embodiment includes input
Mouth PORT1, the first output port PORT2, the second output port PORT3, the 3rd output port PORT4, the 4th output port
PORT5, cross resonator 1, the first step electric impedance resonator 2, the second step electric impedance resonator 3, the 3rd stepped impedance resonance
Device 7, fourth order ladder electric impedance resonator 8, the 5th step electric impedance resonator 9, the first split ring resonator with 1/2nd wavelength
10th, the second split ring resonator 11, with quarter-wave first short-circuit resonant device 4, first with 1/2nd wavelength
Open-circuit resonant device 5；Cross resonator 1 can produce resonance in three different frequencies, and three frequency three passages of correspondence divide
Not Wei first passage, second channel, fourth lane, three passages share same input port PORT1 and cross resonator
1, the centre frequencies of three passages can by adjust the short-circuit transversal 13 of cross resonator 2 and the length of open stub 14 come
Regulation, and by introducing third channel using distributed couplings at input port PORT1 feeder line；First passage is by order
The input port PORT1 that couples successively, cross resonator 1, the first short-circuit resonant device 4, the first open-circuit resonant device 5, port feedback
Line 6, the first output port PORT2 are constituted；Input port PORT1, cross resonator that second channel is coupled successively by order
1st, the first step electric impedance resonator 2, the second step electric impedance resonator 3, the second output port PORT3 are constituted, and third channel is by defeated
The terraced electric impedance resonator 8 of inbound port PORT1, cross resonator 1, the 3rd step electric impedance resonator 7, fourth order, the resistance of the 5th ladder
Antiresonance device 9, the 3rd output port PORT4 are constituted, and fourth lane is by input port PORT1, cross resonator 1, with two
The first split ring resonator 10, the second split ring resonator 11, output feeder 12, the 4th output port PORT5 structures of/mono- wavelength
Into.Wherein, the first short-circuit resonant device 4, the first open-circuit resonant device 5 are operated at 2.4GHz；First step electric impedance resonator 2,
Two step electric impedance resonators 3 are operated at 3.5GHz；The terraced electric impedance resonator the 8, the 5th of 3rd step electric impedance resonator 7, fourth order
Step electric impedance resonator 9 is operated at 4.2GHz；The first split ring resonator 10, second opening resonance with 1/2nd wavelength
Ring 11 is operated at 5.2GHz；Each passage is that the three rank Chebyshevs that passband ripple is 0.4321 respond.In design in order to
Make structure compacter, respectively to cross resonator 1, the first step electric impedance resonator 2, the second step electric impedance resonator the 3, the 3rd
The terraced electric impedance resonator 8 of step electric impedance resonator 7, fourth order, the 5th step electric impedance resonator 9, the first short-circuit resonant device 4, first
Open-circuit resonant device 5 has carried out appropriate bending.Third channel employs CT structures to improve passband rectangular degree, by using
Cross-couplings introduce transmission zero.Five port POs RT1, PORT2, PORT3, PORT4, PORT5 are 50 ohm of impedance
Matching, for ease of the welding of SMA, the port reservation feeder line of sufficient length, 6,12,15 be port feedline in figure, and second is defeated
Exit port PORT3, the 3rd output port PORT4, the 4th output port PORT5 obtain suitable end coupling using tap coupler structure
Close.Via is grounding through hole, it is necessary to be connected with scolding tin with covering copper earth plate, is short-circuit end.It is through measuring the four works device size
The λ of 0.4 λ × 0.22, total size is 0.088 λ2, wherein λ is that first channel central frequency goes out corresponding wavelength.
It is shown in Figure 2, it is shown that the scattering parameter simulation result of the above-mentioned work device of micro-strip four of the present embodiment, its centre frequency
Respectively 2.4Ghz, 3.5GHz, 4.2GHz, 5.2GHZ.Transverse axis represents the signal frequency of the work device of Mini Microstrip four, and the longitudinal axis is represented
Amplitude, includes the amplitude and return loss S11 amplitude of insertion loss (S21, S31, S41, S51), and wherein S11 is represented
PORT1 return loss, S21, S31, S41, S51 represent PORT2, PORT3 and PORT4, PORT5 insertion loss respectively.Insert
Enter the relation between the input power of loss one signal of expression and the power output of another port signal, its corresponding mathematics
Function is：Power output/input power (dB)=20*log | S21 |.Return loss represent the input power of the port signal with
Relation between the reflection power of signal, its corresponding mathematical function is as follows：Reflection power/incident power==20*log | S11
|.In the present embodiment, return loss can reach more than 20dB, and the centre frequency of first passage is 2.4GHz, and relative bandwidth is
5.4%, insertion loss is 2.38dB, and the centre frequency of second channel is 3.5GHz, and relative bandwidth is 12.6%, and insertion loss is
0.86dB, the centre frequency of third channel is 4.2GHz, and relative bandwidth is 5.5%, and insertion loss is 1.6dB, fourth lane
Centre frequency is 5.2GHz, and relative bandwidth is 4.4%, and insertion loss is 2dB.
It is shown in Figure 3, it is shown that the partial parameters emulation of the isolation strip of the above-mentioned work device of Mini Microstrip four of the present embodiment
As a result, in the range of 1~6GHz, the absolute value that S32 reaches has arrived more than 40dB, and S43 absolute value reaches more than 60dB, S52
Absolute value reach more than 40dB, S53 absolute value reaches more than 40dB.
It is shown in Figure 4, it is shown that the stopband characteristic of the above-mentioned work device of Mini Microstrip four of the present embodiment, can from figure
More than 3 times of fundamental frequency can be reached to its 20dB stopband, and are still had further by further optimizing resonator structure
Raising space.
Embodiment described above is only the preferred embodiment of the utility model, not limits implementation of the present utility model with this
Scope, therefore the change that all shape, principles according to the utility model are made, all should cover in protection domain of the present utility model.
Claims (6)
1. a kind of work device of Mini Microstrip four, it is characterised in that：Including input port, the first output port, the second output port,
3rd output port, the 4th output port, cross resonator, the first step electric impedance resonator, the second step electric impedance resonator,
The terraced electric impedance resonator of 3rd step electric impedance resonator, fourth order, the 5th step electric impedance resonator, the with 1/2nd wavelength
First, the second split ring resonator, with quarter-wave first short-circuit resonant device, the first open circuit with 1/2nd wavelength
Resonator；The cross resonator can produce resonance, three frequency three passages of correspondence, difference in three different frequencies
For first passage, second channel, fourth lane, three passages share same input port and cross resonator, and three lead to
The centre frequency in road can be adjusted by adjusting the short-circuit transversal of cross resonator and the length of open stub, and be passed through
At the feeder line of input port third channel is independently introduced using distributed couplings；The first passage is coupled successively by order
Input port, cross resonator, the first short-circuit resonant device, the first open-circuit resonant device, the first output port are constituted, and described second
Input port, cross resonator, the first step electric impedance resonator, the second ladder impedance resonance that passage is coupled successively by order
Device, the second output port constitute, the third channel by order couple successively input port, the 3rd step electric impedance resonator,
Fourth order ladder electric impedance resonator, the 5th step electric impedance resonator, the 3rd output port are constituted, and the fourth lane is by sequentially successively
Input port, cross resonator, the first split ring resonator, the second split ring resonator, the 4th output port of coupling are constituted.
2. the work device of a kind of Mini Microstrip four according to claim 1, it is characterised in that：The cross resonator, first
Short-circuit resonant device, the first open-circuit resonant device, first, second, third and fourth, five step electric impedance resonators are reduced using bending structure
Size.
3. the work device of a kind of Mini Microstrip four according to claim 1, it is characterised in that：The cross resonator,
Grounding through hole is offered on one short-circuit resonant device, is short-circuit end.
4. the work device of a kind of Mini Microstrip four according to claim 1, it is characterised in that：The first short-circuit resonant device,
First open-circuit resonant device is operated at 2.4GHz, and the first, second step electric impedance resonator basic mode is 3.5GHz, described the
3rd, the four, the 5th step electric impedance resonator basic modes are that first, second split ring resonator is operated at 5.2GHz, often in 4.2GHz
Individual passage is three rank Chebyshevs response.
5. the work device of a kind of Mini Microstrip four according to claim 1, it is characterised in that：Second output port,
Three output ports use tap coupler structure.
6. the work device of a kind of Mini Microstrip four according to claim 1, it is characterised in that：It is the input port, first defeated
Exit port, the second output port, the 3rd output port, the 4th output port are 50 ohm of impedance matching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201720130958.1U CN206564308U (en) | 2017-02-14 | 2017-02-14 | A kind of work device of Mini Microstrip four |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720130958.1U CN206564308U (en) | 2017-02-14 | 2017-02-14 | A kind of work device of Mini Microstrip four |
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| CN206564308U true CN206564308U (en) | 2017-10-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711556A (en) * | 2017-02-14 | 2017-05-24 | 华南理工大学 | Miniaturized microstrip quadruplexing device |
-
2017
- 2017-02-14 CN CN201720130958.1U patent/CN206564308U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711556A (en) * | 2017-02-14 | 2017-05-24 | 华南理工大学 | Miniaturized microstrip quadruplexing device |
| CN106711556B (en) * | 2017-02-14 | 2020-09-22 | 华南理工大学 | Miniaturized microstrip quadruplex ware |
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| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171017 Effective date of abandoning: 20200922 |