CN207409639U - A kind of three frequency four-port microstrip combiner of ultra wide band for mobile radio system - Google Patents
A kind of three frequency four-port microstrip combiner of ultra wide band for mobile radio system Download PDFInfo
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- CN207409639U CN207409639U CN201721395168.2U CN201721395168U CN207409639U CN 207409639 U CN207409639 U CN 207409639U CN 201721395168 U CN201721395168 U CN 201721395168U CN 207409639 U CN207409639 U CN 207409639U
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- 229910052802 copper Inorganic materials 0.000 claims abstract description 5
- 239000010949 copper Substances 0.000 claims abstract description 5
- 238000013461 design Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
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- 238000003466 welding Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model discloses a kind of three frequency four-port microstrip combiners of ultra wide band for mobile radio system, it is made of double-side printed-wiring board, the pcb board back side is whole face layers of copper, pcb board front circuit includes combining port, the first frequency dividing port, the second frequency dividing port, three frequency division port, 3G＆4G accesses and 5G accesses, wherein：The 3G＆4G accesses and 5G accesses are combined by T junction at combining port；The 5G accesses are made of a high-pass filter, and are connected to three frequency division port；The 3G＆4G accesses are made up of first low-pass filter, 3G＆4G low-frequency ranges access and 3G＆4G high band access three parts T junction；The 3G＆4G low-frequency ranges access is made of second low-pass filter, and is connected to the first frequency dividing port；The 3G＆4G high bands access is made of a bandpass filter, and is connected to the second frequency dividing port.
Description
Technical field
It is more particularly to a kind of for the super of mobile radio system the utility model is related to antenna and microwave technical field
Three frequency four-port microstrip combiner of broadband.
Background technology
With the development of mobile communication technology, it is more tired to have resulted in base station selection for the website dense deployment of existing base station
It is difficult.3G and 4G condition of multi-system coexistence will continue for an extended period of time.In order to reduce site cost, altogether antenna feeder scheme can be with for polyphyly
Solve the problems, such as cost of building a station well, therefore multifrequency antenna comes into being.
Combiner is the key components in Modern Communication System transceiver, its performance quality is directly related to whole
A communication system.
By using combiner, it can effectively realize the multiple signals of different system, share a set of broad-band antenna.And it is combined
Device is a core component of multifrequency antenna, and combiner built in existing antenna for base station mostly using micro-strip combiner scheme, is mainly
It is easy to process, it is at low cost, it is small, convenient for integrated.And traditional micro-strip combiner is all made of wave filter and match circuit,
However for multifrequency micro-strip combiner, the design of match circuit will become particularly complicated, and the presence of match circuit also increases
The size of combiner is added.Current micro-strip combiner, is substantially three port combiner of double frequency, and most important application scenarios are
The signal combining of two standards of TD-LTE of the TD-SCDMA and 4G systems of 3G systems, that is, usually said FAD frequency ranges are micro-
Band combiner.With the rapid development of 5G technologies and the announcement of 5G frequency spectrums, though it is foreseeable that will face quickly 5G systems and
The problem of 4G or even 3G shared by multiple systems antenna feeder resources, therefore, current three port combiner of double frequency, will be unable to use, and there is an urgent need for solutions
The certainly combining problem of more multiband.
Utility model content
In order to overcome deficiency of the prior art, the utility model provides a kind of ultra-wide for mobile radio system
Three frequency four-port microstrip combiner of band, solves the problems, such as 5G systems and 4G or even 3G shared by multiple systems antenna feeder resources.
In order to reach above-mentioned purpose of utility model, technical solution is as follows used by solving its technical problem：
A kind of three frequency four-port microstrip combiner of ultra wide band for mobile radio system, by double-side printed-wiring board
Be made, the pcb board back side be whole face layers of copper, pcb board front circuit include combining port, first frequency dividing port, second frequency dividing port,
Three frequency division port, 3G＆4G accesses and 5G accesses, wherein：
The 3G＆4G accesses and 5G accesses are combined by T junction at combining port；
The 5G accesses are made of a high-pass filter, and are connected to three frequency division port；
The 3G＆4G accesses are by first low-pass filter, 3G＆4G low-frequency ranges access and 3G＆4G high bands access three
Part is made up of T junction；
The 3G＆4G low-frequency ranges access is made of second low-pass filter, and is connected to the first frequency dividing port；
The 3G＆4G high bands access is made of a bandpass filter, and is connected to the second frequency dividing port.
Further, first low-pass filter and high-pass filter use 5 rank bandpass filters.
Further, second low-pass filter and bandpass filter use 3 rank wave filters.
Preferably, the open circuit minor matters use/4 step electric impedance resonators.
Further, the pcb board selects the high frequency plate of dielectric constant better performances between 2.5~3.5.
Further, the working frequency range of the 3G＆4G low-frequency ranges access is 690~960MHz, and the 3G＆4G high bands lead to
The working frequency range on road is 1700~2700MHz, and the working frequency range of the 5G accesses is 3300~3800MHz.
The utility model due to using the technology described above, is allowed to compared with prior art, have the following advantages that and accumulate
Pole effect：
A kind of three frequency four-port microstrip combiner of ultra wide band for mobile radio system disclosed in the utility model
With simple in structure, compact in design, the pcb board area used is small, design method is versatile, processing is simple, is suitble to high-volume
The features such as production and function admirable.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described.It is clear that the accompanying drawings in the following description is only some embodiments of the utility model,
For those skilled in the art, without creative efforts, other be can also be obtained according to these attached drawings
Attached drawing.In attached drawing：
Fig. 1 is in a kind of three frequency four-port microstrip combiner of ultra wide band for mobile radio system of the utility model
Pcb board front circuit distribution map；
Fig. 2 is in a kind of three frequency four-port microstrip combiner of ultra wide band for mobile radio system of the utility model
The dividing method figure of four frequency micro-strip combiners；
Fig. 3 is in a kind of three frequency four-port microstrip combiner of ultra wide band for mobile radio system of the utility model
Tri-frequency combiner schematic diagram；
Fig. 4 is in a kind of three frequency four-port microstrip combiner of ultra wide band for mobile radio system of the utility model
Electrical performance data figure.
【Primary symbols explanation】
1- is combined port；
2- first divides port；
3- second divides port；
4- three frequency divisions port；
201-3G＆4G accesses；
The first low-pass filters of 202-；
203-3G＆4G low-frequency range accesses；
204-3G＆4G high band accesses；
The second low-pass filters of 205-；
206- bandpass filters；
301-5G accesses；
302- high-pass filters.
Specific embodiment
Below with reference to the attached drawing of the utility model, the technical scheme in the embodiment of the utility model is carried out clear, complete
Whole description and discussion, it is clear that as described herein is only a part of example of the utility model, is not whole realities
Example, based on the embodiment in the utility model, those of ordinary skill in the art institute on the premise of creative work is not made
The every other embodiment obtained, belongs to the scope of protection of the utility model.
Embodiment one
As shown in Figure 1, this application discloses a kind of three frequency four-port microstrips of ultra wide band for mobile radio system
Combiner is made of double-side printed-wiring board, and the pcb board back side is whole face layers of copper, and pcb board front circuit includes combining port 1, the
One frequency dividing port 2, second divides port 3, three frequency division port 4,3G＆4G accesses 201 and 5G accesses 301, wherein：
The 3G＆4G accesses 201 and 5G accesses 301 are combined by T junction at combining port 1；
The 5G accesses 301 are made of a high-pass filter 302, and are connected to three frequency division port 4；
The 3G＆4G accesses 201 are by first low-pass filter 202,3G＆4G low-frequency ranges access 203 and 3G＆4G high frequencies
204 three parts of Duan Tonglu are made up of T junction；
The 3G＆4G low-frequency ranges access 203 is made of second low-pass filter 205, and is connected to the first frequency dividing end
Mouth 2；
The 3G＆4G high bands access 204 is made of a bandpass filter 206, and is connected to the second frequency dividing port 3.
The design method that the present embodiment uses is that frequency range is divided into two parts composition, 3G＆4G system frequency bands and 5G first
System frequency band, by this making frequency dividing access.Then two parts composition, i.e. low-frequency range access are further subdivided into 3G＆4G frequency dividing accesses
(690~960MHz) and high band access (1700~2700MHz).Specifically, the work of the 3G＆4G low-frequency ranges access 203
Frequency range is 690~960MHz, and the working frequency range of the 3G＆4G high bands access 204 is 1700~2700MHz, the 5G accesses
301 working frequency range is 3300~3800MHz.Wherein, the first frequency dividing port 2 corresponds to working frequency range as 690~960MHz, and second
It is 1700~2700MHz to divide port 3 and correspond to working frequency range, three frequency division port 4 correspond to working frequency range for 3300~
3800MHz。
Further, first low-pass filter 202 and high-pass filter 302 use 5 rank bandpass filters.It is described
Second low-pass filter 205 and bandpass filter 206 use 3 rank wave filters.Specifically, in order to ensure the normal of tri-frequency combiner
Work, the good isolation for realizing three roads frequency dividing are crucial.Needing the branch front end of secondary frequency dividing, it is necessary to assure have fairly good
Return loss, insertion loss and Out-of-band rejection.For this purpose, low-pass filter 202 and high-pass filter 302 use 5 rank band logicals
Wave filter designs, and higher exponent number can provide better Out-of-band rejection.Therefore, low-pass filter 202 and high-pass filter 302
There are 5 open circuit minor matters, bending handles to reduce pcb board area.On the premise of performance is ensured, similarly in order to reduce face
Product, the second low-pass filter 205 and bandpass filter 206 are designed using 3 ranks, therefore have 3 open circuit minor matters, minimum 2 minor matters.
Preferably, the open circuit minor matters use/4 step electric impedance resonators.In the present embodiment, utensil is filtered in order to allow
There is more flexible transmission zero, by all open circuit minor matters with entering/4 step electric impedance resonator (SIR, Stepped
Impendence Resonator, step electric impedance resonator) it realizes, transmission zero can be different by the twolink on SIR
Impedance ratio control, impedance ratio can also influence the total length of SIR, smaller impedance ratio can realize shorter length, because
This can flexibly control the length of open circuit minor matters.
Further, the pcb board selects the high frequency plate of dielectric constant better performances between 2.5~3.5.
In the present embodiment, for signal transmission, facilitate welding coaxial cable, port 2, the are divided in combining port 1, first
Pad is equipped at two divided-frequency port 3 and three frequency division port 4, for welding coaxial cable outer conductor, is combined port 1, first
It divides port 2, second and divides 4 welding cable cored wire of port 3 and three frequency division port, and pad pitch signal port face is about
1mm avoids short circuit.Several grounding through hole are equipped on pad simultaneously, good earth is formed with pcb board back side layers of copper.
Multifrequency micro-strip combiner is different from wideband microstrip combiner, in order to realize the good isolation of each branch and effective work
Make, using the mentality of designing divided step by step.The tri-frequency combiner of the present embodiment is one group using 3G＆4G frequency ranges, 5G frequency ranges
One group is individually for, then carries out second of frequency dividing again.By taking four frequency micro-strip combiners as an example, as shown in Fig. 2, by adjoining two
Frequency range is combined into one group, forms frequency dividing combining for the first time, is then divided combining for the second time by two groups again, finally obtains four frequencies and closes
Road device.Wherein used wave filter can use the open circuit SIR of λ/4 to realize.
Embodiment two
As shown in figure 3, in first time frequency dividing combining, 3G＆4G low-frequency ranges access (690~960MHz) can individually be made
For all the way, 3G＆4G high bands access (1700~2700MHz) and 5G accesses 301 (3300~3800MHz) composition are other all the way,
Then separated again when second divides again, 3G＆4G high bands access (1700~2700MHz) and 5G accesses finally still obtain 3
A port.Accordingly in this frequency dividing mode, in order to ensure the superperformance of the secondary frequency dividing of 301 branches, 301 branches employ
The terminal short circuit step electric impedance resonator SIR of the λ of 5 minor matters/4.And other three wave filters, be 3 minor matters the open circuit rank of λ/4
Terraced electric impedance resonator SIR.
In addition, as shown in fig. 4, it can be seen that, reflectance factor S11 is respectively less than -15dB in three frequency ranges, three passbands
Insertion loss S21 is respectively less than 1dB, and Out-of-band rejection is all higher than 30dB, this is for micro-strip combiner, function admirable.
The above is only the preferable specific embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, in the technical scope that any one skilled in the art discloses in the utility model, can be readily occurred in
Change or replacement, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should
It is subject to the protection scope in claims.
Claims (6)
1. a kind of three frequency four-port microstrip combiner of ultra wide band for mobile radio system, by double-side printed-wiring board system
Into the pcb board back side is whole face layers of copper, which is characterized in that pcb board front circuit includes combining port, the first frequency dividing port, second
Port, three frequency division port, 3G＆4G accesses and 5G accesses are divided, wherein：
The 3G＆4G accesses and 5G accesses are combined by T junction at combining port；
The 5G accesses are made of a high-pass filter, and are connected to three frequency division port；
The 3G＆4G accesses are by first low-pass filter, 3G＆4G low-frequency ranges access and 3G＆4G high band access three parts
It is made up of T junction；
The 3G＆4G low-frequency ranges access is made of second low-pass filter, and is connected to the first frequency dividing port；
The 3G＆4G high bands access is made of a bandpass filter, and is connected to the second frequency dividing port.
2. a kind of three frequency four-port microstrip of ultra wide band for mobile radio system according to claim 1 is combined
Device, which is characterized in that first low-pass filter and high-pass filter have 5 open circuit branches using 5 rank bandpass filters
Section.
3. a kind of three frequency four-port microstrip of ultra wide band for mobile radio system according to claim 1 is combined
Device, which is characterized in that second low-pass filter and bandpass filter have 3 open circuit minor matters using 3 rank wave filters.
4. a kind of three frequency four-port microstrip of ultra wide band for mobile radio system according to Claims 2 or 3 closes
Road device, which is characterized in that the open circuit minor matters are using the step electric impedance resonator of λ/4.
5. a kind of three frequency four-port microstrip of ultra wide band for mobile radio system according to claim 1 is combined
Device, which is characterized in that the pcb board selects the high frequency plate of dielectric constant better performances between 2.5~3.5.
6. a kind of three frequency four-port microstrip of ultra wide band for mobile radio system according to claim 1 is combined
Device, which is characterized in that the working frequency range of the 3G＆4G low-frequency ranges access be 690~960MHz, the 3G＆4G high bands access
Working frequency range for 1700~2700MHz, the working frequency range of the 5G accesses is 3300~3800MHz.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721395168.2U CN207409639U (en) | 2017-10-25 | 2017-10-25 | A kind of three frequency four-port microstrip combiner of ultra wide band for mobile radio system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721395168.2U CN207409639U (en) | 2017-10-25 | 2017-10-25 | A kind of three frequency four-port microstrip combiner of ultra wide band for mobile radio system |
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| CN207409639U true CN207409639U (en) | 2018-05-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107732399A (en) * | 2017-10-25 | 2018-02-23 | 上海安费诺永亿通讯电子有限公司 | A kind of frequency four-port microstrip combiner of ultra wide band three for mobile radio system |
| CN109346805A (en) * | 2018-08-29 | 2019-02-15 | 中国电子科技集团公司第二十九研究所 | A kind of extraction zero point microstrip filter |
| CN109713415A (en) * | 2018-12-26 | 2019-05-03 | 成都九洲迪飞科技有限责任公司 | A kind of micro-strip high-isolation binary channels combiner |
-
2017
- 2017-10-25 CN CN201721395168.2U patent/CN207409639U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107732399A (en) * | 2017-10-25 | 2018-02-23 | 上海安费诺永亿通讯电子有限公司 | A kind of frequency four-port microstrip combiner of ultra wide band three for mobile radio system |
| CN109346805A (en) * | 2018-08-29 | 2019-02-15 | 中国电子科技集团公司第二十九研究所 | A kind of extraction zero point microstrip filter |
| CN109713415A (en) * | 2018-12-26 | 2019-05-03 | 成都九洲迪飞科技有限责任公司 | A kind of micro-strip high-isolation binary channels combiner |
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Granted publication date: 20180525 |