CN208690468U - Two road combiner of broadband based on single layer strip lines configuration - Google Patents
Two road combiner of broadband based on single layer strip lines configuration Download PDFInfo
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- CN208690468U CN208690468U CN201821547051.6U CN201821547051U CN208690468U CN 208690468 U CN208690468 U CN 208690468U CN 201821547051 U CN201821547051 U CN 201821547051U CN 208690468 U CN208690468 U CN 208690468U
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Abstract
The utility model discloses a kind of two road combiner of broadband based on single layer strip lines configuration.The utility model combiner include metal cavity and with a common end and be respectively provided with it is several open circuit stepped impedance resonance structures two metal bands；Each open circuit stepped impedance resonance structure is symmetrically arranged with the identical dielectric piece of thickness above and below, two metal band supports are fixed in the metal cavity by these dielectric pieces, it is air between the rest part and metal cavity of two metal bands, the dielectric constant of the dielectric piece is greater than the dielectric constant of air；This two metal bands respectively constitute a single layer strip lines configuration low-pass filter and a single layer strip lines configuration high-pass filter together with dielectric piece, air and metal cavity.Compared with prior art, the utility model has big bandwidth, and high power is small in size, and low cost, production is simple, exempts from the advantages of debugging, facilitating mass production.
Description
Technical field
The utility model relates to a kind of combiner more particularly to a kind of two tunnel of broadband combinings based on single layer strip lines configuration
Device belongs to microwave device technical field.
Background technique
With the extensive use and development of the communication technology, as component indispensable in communication system, combiner quilt
Be widely used in modern wireless communications networks, base station, antenna system, tower put and indoor radio frequency covering system in, have
A large amount of combiner.The major function of combiner is that the radiofrequency signal of two or more different frequencies is synthesized signal all the way,
The radiofrequency signal all the way comprising two or more different frequencies is either separated into individual signal.With to wireless communication networks
The continuous improvement of network capacity requirement, more and more frequency spectrum resources, which are planned, to come into operation, therefore also also proposed to combiner
New requirement: broadband, high power, low-loss is small in size, light-weight, low cost, convenient for mass production, etc..
The design of current most of combiners is in such a way that multiple cavities bandpass filter couples common end.However,
When frequency band is too wide, cavity band-pass filter is relatively difficult to achieve, therefore, just becomes preferable using strip line low pass or high-pass filter
Design scheme.Currently, having the design for having used strip line low pass and high pass on a small quantity in broadband combiner in the market.Its
In have 2 road combiner of wideband using single circuit, 2 tunnel of the wide-band combining for the high low pass mode that also useful odt circuit is realized
Device.Single circuit has many advantages, such as that production is simple, at low cost, is a kind of good design scheme；However its achievable bandwidth
It is limited.The 2 achievable bandwidth of road combiner of existing single circuit form are generally 698-960MHz and 1700-2200MHz,
It is unsatisfactory for the frequency requirement of most of countries and regions, because existing frequency planning has contained low frequency end
The 2700MH of 600MHz and front end.In addition, existing strip lines configuration filter generallys use the knot of pcb board covering metal coating
Structure, it is difficult to support high-power applications.
In conclusion the radio spectrum resources constantly extended put forward new requirements broadband combiner, new combiner
It is required that the broader frequency band of covering, there is higher power capacity, while will also have small in size, light-weight, low cost, convenient for a large amount of raw
The characteristic of production.
Utility model content
The technical problem to be solved by the utility model is to overcome the shortage of prior art, provide a kind of band-like based on single layer
The two road combiner of broadband of cable architecture has big bandwidth, and high power is small in size, and low cost, production is simple, exempts to debug, convenient big
The advantages of amount production.
Broadband two road combiner of the utility model based on single layer strip lines configuration, including metal cavity and have one
Common end and two metal bands for being respectively provided with several open circuit stepped impedance resonance structures；Each open circuit stepped impedance resonance knot
Structure is symmetrically arranged with the identical dielectric piece of thickness above and below, these dielectric pieces are solid by two metal band supports
It is air, the dielectric piece between the rest part and metal cavity of two metal bands due in the metal cavity
Dielectric constant be greater than air dielectric constant；This two metal bands are together with dielectric piece, air and metal cavity
Respectively constitute a single layer strip lines configuration low-pass filter and a single layer strip lines configuration high-pass filter.
Preferably, the material of the metal band is copper.
Preferably, two metal bands are formed by one piece of metal plate is integrally formed.
Preferably, the material of the dielectric piece is polytetrafluoroethylene (PTFE).
Preferably, each open circuit stepped impedance resonance structure offers corresponding installation with corresponding dielectric on piece
Through-hole, can will be opened a way stepped impedance resonance structure and dielectric piece phase by the dielectric column being adapted to the installation through-hole
To fixation.
Preferably, the metal band with a thickness of 1~2mm.
Compared with prior art, technical solutions of the utility model have the advantages that
The utility model is combined using single layer strip lines configuration high-pass and low-pass filter, constructs single belt using metal band
Shape cable architecture filter, and the resonator parts use of single layer strip lines configuration filter than circuit rest part more Gao Jie electricity
The medium of constant on the one hand can effective expansible combiner while having many advantages, such as small in size, light-weight, inexpensive
On the other hand power capacity greatly improved in work bandwidth.
Detailed description of the invention
Fig. 1 is the structural representation of the metal band part of two road combiner of the utility model broadband in specific embodiment
Figure；
Fig. 2 is the schematic perspective view of two road combiner of the utility model broadband in specific embodiment；
Fig. 3 is the explosive view of two road combiner of the utility model broadband in specific embodiment；
Fig. 4 is the transmission line circuit model of two road combiner of the utility model broadband in specific embodiment；
Fig. 5 is the S- parameter response curve of two road combiner of the utility model broadband in specific embodiment.
It is marked in figure containing the following drawings:
1, metal band, 2, metal band, 3, common end, 4, input terminal, 5, input terminal, 6, open circuit stepped impedance resonance knot
Structure, 7, installation through-hole, 8, cover board, 9, bottom plate, 10, sheet of PTFE, 11, PTFE column.
Specific embodiment
In order to meet the broader frequency band of covering proposed to combiner, there is higher power capacity, while also to have body
Product is small, light-weight, low cost, and convenient for the requirement of mass production, the thinking of the utility model is using with small in size, weight
Gently, the design scheme that the single layer strip lines configuration high and low pass filter of the advantages that inexpensive combines；Simultaneously to structure carry out into
One step is improved, and constructs single layer strip lines configuration filter using with certain thickness metal band, to improve power capacity, and
The medium of the more high dielectric constant than circuit rest part is used in the resonator parts of single layer strip lines configuration filter, to mention
The covered bandwidth of high combiner institute.
Specifically, the two road combiner of broadband based on single layer strip lines configuration that the utility model is proposed, including gold
Belong to cavity and with a common end and be respectively provided with it is several open circuit stepped impedance resonance structures two metal bands；Each
Open circuit stepped impedance resonance structure is symmetrically arranged with the identical dielectric piece of thickness above and below, these dielectric pieces will
Two metal band supports are fixed in the metal cavity, are empty between the rest part and metal cavity of two metal bands
Gas, the dielectric constant of the dielectric piece are greater than the dielectric constant of air；This two metal bands and dielectric piece, air
And metal cavity respectively constitutes a single layer strip lines configuration low-pass filter and a single layer strip lines configuration high pass together
Filter.
From a cost perspective, the material of the metal band is preferably the copper that silver is covered on copper or surface, the dielectric
The material of piece is preferably PTFE(polytetrafluoroethylene (PTFE), also known as Teflon).
In order to simplify production technology, further reduce the cost, two metal bands are preferably passed through by one piece of metal plate
The integral forming techniques such as punching press, cutting are prepared.
Considering power capacity and other electric properties, the thickness of the metal band are preferably 1~2mm.
Dielectric piece can be used bonding agent and be adhesively fixed on open circuit stepped impedance resonance structure upper and lower surface, but in this way
It will lead to dielectric thickness to be not easy accurately to control to influence electric property.It is fixed for the ease of installation, it is preferable that each open circuit rank
Terraced impedance resonance structure offers corresponding installation through-hole with corresponding dielectric on piece, can by with the installation through-hole
The dielectric column of adaptation is relatively fixed by open circuit stepped impedance resonance structure and dielectric piece.
For the ease of public understanding, with a specific embodiment and carry out the technical side to the utility model in conjunction with attached drawing below
Case is described in detail:
The intended pass-band of bis- road combiner of the present embodiment Zhong will reach 617-960MHz/1695-2700MHz.The combining
Device is made of a low-pass filter and a high-pass filter connection common end, and structure is as shown in FIG. 1 to 3.Such as Fig. 1
Shown, the main part of high pass and low-pass filter is cut by the uniform metal plate (with a thickness of 1~2mm) of one piece of thickness
The metal band 1 and metal band 2 with a common end 3, the other end of metal band 1 and metal band 2 is respectively to close
Two input terminals of road device: input terminal 4 and input terminal 5.Open circuit there are three being respectively set on metal band 1 and metal band 2
Stepped impedance resonance structure 6, by selecting the parameter of suitable open circuit stepped impedance resonance structure 6, metal band 1 and metal strip
Band 2 is respectively formed low-pass filter and high-pass filter.In open circuit stepped impedance resonance structure 6, common end 3, input terminal 4, defeated
Enter and be provided with installation through-hole 7 on end 5, installation fixation can be carried out by the dielectric column being adapted to installation through-hole 7.
As shown in Figure 2 and Figure 3, open circuit stepped impedance resonance structure 6 is sandwiched between the sheet of PTFE 10 of two pieces of same thickness,
The size shape of sheet of PTFE 10 and the size shape of open circuit stepped impedance resonance structure 6 are adapted, covering open circuit ladder resistance just
Antiresonance structure 6, and the other parts of metal band 1 and metal band 2 then expose in air.Entire component shown in FIG. 1
It is fixed in the metal cavity that one is made of cover board 8 and bottom plate 9, sheet of PTFE 10 plays dielectric constant required for offer
And the double action of component shown in support Fig. 1.In addition, also by PTFE column compatible with installation through-hole 7 in combiner
Portion's component is fixed, to guarantee the stability of structure.It can be seen that this six open circuit stepped impedance resonance structures 6 and cover board
8, bottom plate 9, sheet of PTFE 10 together form the strip lines configuration using PTFE as medium, and its of metal band 1 and metal band 2
Its part then constitutes the strip lines configuration using air as medium, the chamber of two kinds of strip lines configurations together with cover board 8, bottom plate 9, air
Body height is also different.Therefore, the low-pass filter in the utility model combiner and high-pass filter are respectively by two kinds of single belts
Shape cable architecture is constituted.In addition, high-pass filter therein is realized using the secondary passband of low-pass filter.
In traditional design methods, the structure of identical dielectric constant and housing depth is generally used, when frequency band is broadening,
Open circuit stepped impedance resonance structure in metal band 1 and 2 will significantly increase, and be overlapped with remaining circuit, thus cannot achieve
Single circuit.In the utility model combiner, it is greater than air using dielectric constant is added in open circuit stepped impedance resonance structure
The solid dielectric piece of dielectric constant and the method for reducing housing depth, can reduce the size of open circuit stepped impedance resonance structure,
Open circuit stepped impedance resonance structure is limited within limits, simple single circuit is achieved.
Fig. 4 shows the transmission line circuit model of above-mentioned combiner, on the basis of Fig. 4 circuit model, according to design objective,
By electromagnetic-field simulation and optimization, the detailed construction parameter of available combiner.Fig. 5 shows the S- parameter response of combiner
Curve.It finds after actual measurement, the passband of the combiner has reached 617-960MHz/1695-2700MHz, the water of the remote super prior art
It is flat, and there is high power, small in size, low cost, production is simple, exempts from the advantages of debugging, facilitating mass production.
Claims (6)
1. a kind of two road combiner of broadband based on single layer strip lines configuration, which is characterized in that including metal cavity and have
One common end and two metal bands for being respectively provided with several open circuit stepped impedance resonance structures；Each open circuit stepped impedance is humorous
Vibration structure is symmetrically arranged with the identical dielectric piece of thickness above and below, these dielectric pieces are by two metal band branch
Support is fixed in the metal cavity, is air between the rest part and metal cavity of two metal bands, and the insulation is situated between
The dielectric constant of matter piece is greater than the dielectric constant of air；This two metal bands and dielectric piece, air and metal cavity
A single layer strip lines configuration low-pass filter and a single layer strip lines configuration high-pass filter are respectively constituted together.
2. two road combiner of broadband as described in claim 1, which is characterized in that the material of the metal band is copper.
3. two road combiner of broadband as described in claim 1, which is characterized in that two metal bands are whole by one piece of metal plate
It is body formed to form.
4. two road combiner of broadband as described in claim 1, which is characterized in that the material of the dielectric piece is polytetrafluoroethyl-ne
Alkene.
5. two road combiner of broadband as described in claim 1, which is characterized in that each open circuit stepped impedance resonance structure and corresponding
Dielectric on piece offer corresponding installation through-hole, can will be opened by the dielectric column being adapted to the installation through-hole
Road stepped impedance resonance structure and dielectric piece are relatively fixed.
6. two road combiner of broadband as described in claim 1, which is characterized in that the metal band with a thickness of 1~2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821547051.6U CN208690468U (en) | 2018-09-21 | 2018-09-21 | Two road combiner of broadband based on single layer strip lines configuration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821547051.6U CN208690468U (en) | 2018-09-21 | 2018-09-21 | Two road combiner of broadband based on single layer strip lines configuration |
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| Publication Number | Publication Date |
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| CN208690468U true CN208690468U (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821547051.6U Expired - Fee Related CN208690468U (en) | 2018-09-21 | 2018-09-21 | Two road combiner of broadband based on single layer strip lines configuration |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109066031A (en) * | 2018-09-21 | 2018-12-21 | 江苏贝孚德通讯科技股份有限公司 | Two road combiner of broadband based on single layer strip lines configuration |
| CN110867633A (en) * | 2019-10-30 | 2020-03-06 | 苏州灿勤通讯技术有限公司 | Novel filter |
-
2018
- 2018-09-21 CN CN201821547051.6U patent/CN208690468U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109066031A (en) * | 2018-09-21 | 2018-12-21 | 江苏贝孚德通讯科技股份有限公司 | Two road combiner of broadband based on single layer strip lines configuration |
| CN110867633A (en) * | 2019-10-30 | 2020-03-06 | 苏州灿勤通讯技术有限公司 | Novel filter |
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Granted publication date: 20190402 |