CN205646094U - Ware is divided to small -size ultra wide band merit - Google Patents
Ware is divided to small -size ultra wide band merit Download PDFInfo
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- CN205646094U CN205646094U CN201620338907.3U CN201620338907U CN205646094U CN 205646094 U CN205646094 U CN 205646094U CN 201620338907 U CN201620338907 U CN 201620338907U CN 205646094 U CN205646094 U CN 205646094U
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- circuit
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- merit
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Abstract
The utility model provides a ware is divided to small -size ultra wide band merit, includes the circuit board and sets up the merit parallel circuit on the circuit board, the merit parallel circuit has the incoming signal span line and two the output signal span lines that are connected to output port that are connected to input port, and incoming signal span line and output signal span line are connected through a circuit node electricity, the signal transmission path length of incoming signal span line and output signal span line is 16 lambda - 19 lambda, the merit parallel circuit in, locate still to connect a signal transmission path length to be 13 lambda - 16 lambda's the circuit matching section that is used for matcing line impedance at the circuit node of connecting incoming signal span line and output signal span line. Reduced the size that the ware is divided to the merit, made in its the more environment that can be applied to. Overcome the unmatched problem of line capacitance inductive effect, impedance that signal transmission minor matters contraction in length leads to, guaranteed the merit and divided the ware performance.
Description
Technical field
This utility model relates to the power splitter of a kind of antenna, specifically a kind of small size ultra wideband power divider.
Background technology
Power splitter full name power divider, is a kind of a road input signal energy to be divided into two-way or the device of the equal or unequal energy of multiple-channel output, is the primary element in aerial array feeding network.Along with the development of technology, people are more and more higher to the requirement of device miniaturization, and the miniaturization of power splitter, broadband are always the research direction in industry.Impedance matching is a kind of duty common in radiotechnics, and it reflects the power transmission relation between input circuit and output circuit.When circuit realiration impedance matching, maximum power transmission will be obtained.Otherwise, when circuit impedance mismatch, not only can not get the power transmission of maximum, it is also possible to circuit is produced infringement.Radio circuit impedance variation is one cycle of 1/2 wavelength, and for realizing impedance matching, every section of minor matters length of most power splitter is set to 1/4 λ (wherein λ is radiation wavelength corresponding to a period of time mid frequency, lower same).For the miniaturization aspect of device, it is essentially all at present and studies in terms of microstrip line arrangement mode, board structure of circuit etc..But due to the restriction of minor matters length, power splitter size is the biggest, limits it and uses scene.
Utility model content
Technical problem to be solved in the utility model is to overcome the larger-size problem of power splitter, it is provided that the small size ultra wideband power divider that a kind of Performance Match is good.
This utility model be the technical scheme is that a kind of small size ultra wideband power divider by the above-mentioned technical problem of solution, including circuit board and setting merit parallel circuit on circuit boards, described merit parallel circuit has an input signal span line being connected to input port and two output signal span lines being connected to output port, input signal span line and output signal span line are electrically connected by a circuit node, the signal transmission path length of described input signal span line and output signal span line is 1/6 λ 1/9 λ, in described merit parallel circuit, the line matching section for terminated line impedance of a length of 1/3 λ 1/6 λ of signal transmission path it is further connected with at the circuit node connecting input signal span line and output signal span line.
The other end of described line matching section can also be short-circuit condition.
The periphery of described circuit board is provided with metal fixed frame, and the merit parallel circuit on circuit board is connected with outer, coaxial cable.
The signal transmission path length of described input signal span line and output signal span line is 1/8 λ.
A length of 1/4 λ of signal transmission path of described line matching section.
Described circuit board uses the form of PCB copper-clad plate, and merit parallel circuit is the printed circuit being arranged in PCB copper-clad plate.
The other end of described line matching section is connected with circuit board back copper sheet by metallization via, forms short-circuit condition.
The beneficial effects of the utility model are: the signal of power divider circuit is transmitted minor matters contraction in length is 1/6 λ 1/9 λ, thus decreases the board area arranged needed for circuit, reduces the size of power splitter so that it is in the more environment that can be applied to.Increasing by a segment length at the connection node of input signal span line and output signal span line is 1/3 λ 1/6 λ short circuit or open circuit minor matters, to change line impedance, increase alien frequencies isolation simultaneously, overcome line capacitance inductive effect, the problem of impedance mismatch that signal transmission minor matters contraction in length causes, it is ensured that power splitter performance.Power splitter uses metal fixed frame, and peripheral coaxial cable connects, and improves three rank performances of power splitter.Use the PCB copper-clad plate of Conventional dielectric constant as the pcb board material of circuit board, reduce cost.
Accompanying drawing explanation
Fig. 1 is the embodiment schematic diagram of a kind of power splitter.
Fig. 2 is the embodiment schematic diagram of a merit parallel circuit in power splitter.
Fig. 3 is the Smith chart that signal transmits that minor matters are 1/4 λ.
Fig. 4 is the Smith chart that signal transmission minor matters shorten to 1/8 λ.
Fig. 5 is to increase the Smith chart matching effect schematic diagram that circuit is mated by line matching section.
Labelling in figure: 1, merit parallel circuit, 2, metal fixed frame, 3, circuit board, 4, input signal span line, 5, output signal span line, 6, output signal span line, 7, line matching section, 8, metallization via.
Detailed description of the invention
Embodiment of the present utility model is illustrated below in conjunction with accompanying drawing.
As it is shown in figure 1, a kind of small size ultra wideband power divider, including circuit board 3 and the merit parallel circuit 1 that is arranged on circuit board 3, the circuit board in this embodiment is provided with two identical merit parallel circuits.Each merit parallel circuit 1 is as shown in Figure 2, there is an input signal span line 4 being connected to power splitter input port and two output signal span lines 5,6 being connected to output port, input signal span line and output signal span line electrically connected by a circuit node.The signal of telecommunication through input signal span line 4 is divided into two at this node, is assigned to output signal span line 5 and 6.Smith chart as shown in Figure 3, radio circuit impedance variation is one cycle of 1/2 wavelength, and in figure, stain is at 1/4 wavelength, is positioned at x-axis, without capacitor and inductor effect.Common power splitter only needs 1/4 Wavelength matched, just can realize the power splitter preferably mated.But this power splitter size can be bigger, it is difficult to meets miniature requirement.
The signal transmission path length of input signal span line 4 and output signal span line 5,6, in order to reduce power splitter size, is set to 1/6 λ 1/9 λ, preferably 1/8 λ by this utility model.Smith chart as shown in Figure 4,1/8 wavelength is positioned at above circle diagram at stain (or lower section, original position is different, can have any different).The reduction of signal transmission segment length causes merit parallel circuit to produce capacitor and inductor effect, and performance is not mated.Need to match center, Normal practice is to change its impedance, and lengthens 1/8 wavelength.But being so 1/4 Wavelength matched, become common power splitter, the miniaturization required with us is not inconsistent.General in microstrip circuitry, it is filtered by arranging short circuit minor matters.
In this utility model, propose circuit increases by one section of short-circuit line.In common antenna feeding circuit, short circuit minor matters primarily serve the effect of filtering.And after power splitter signal transmission path is shortened by this utility model, as shown in Figure 2, increasing by a segment signal path-length at the circuit node connecting input signal span line and output signal span line is 1/3 λ 1/6 λ, the preferably line matching section 7 of 1/4 λ, it is possible to realize 1/8 wave line impedance matching.After matched, as it is shown in figure 5, stain falls after rise to x-axis in Smith chart.
Described circuit board 3 can use the form of PCB copper-clad plate, merit parallel circuit 1 to be the printed circuit being arranged in PCB copper-clad plate.
The other end of described line matching section 7 can be connected with circuit board back copper sheet by metallization via 8, forms short-circuit condition, it is achieved short-circuit line matching section.
Metallization via 8 can also be removed, make the other end of line matching section 7 become open-circuit condition, it is achieved open-circuit line matching section.
The periphery of described circuit board 3 is provided with metal fixed frame 2, and the merit parallel circuit 1 on circuit board 3 is connected with outer, coaxial cable, to promote three rank performances of power splitter.
Claims (7)
1. a small size ultra wideband power divider, including circuit board (3) and the merit parallel circuit (1) that is arranged on circuit board (3), described merit parallel circuit (1) has an input signal span line (4) being connected to input port and two output signal span lines (5 being connected to output port, 6), input signal span line and output signal span line are electrically connected by a circuit node, it is characterized in that: described input signal span line (4) and output signal span line (5, 6) signal transmission path length is 1/6 λ 1/9 λ, in described merit parallel circuit (1), the line matching section (7) for terminated line impedance of a length of 1/3 λ 1/6 λ of signal transmission path it is further connected with at the circuit node connecting input signal span line and output signal span line.
2. a kind of small size ultra wideband power divider as claimed in claim 1, it is characterised in that: the other end of described line matching section (7) is short-circuit condition.
3. a kind of small size ultra wideband power divider as claimed in claim 1, it is characterised in that: the periphery of described circuit board (3) is provided with metal fixed frame (2), and the merit parallel circuit (1) on circuit board (3) is connected with outer, coaxial cable.
4. a kind of small size ultra wideband power divider as claimed in claim 1, it is characterised in that: the signal transmission path length of described input signal span line (4) and output signal span line (5,6) is 1/8 λ.
5. a kind of small size ultra wideband power divider as claimed in claim 1, it is characterised in that: a length of 1/4 λ of signal transmission path of described line matching section (7).
6. a kind of small size ultra wideband power divider as claimed in claim 1, it is characterised in that: described circuit board (3) uses the form of PCB copper-clad plate, and merit parallel circuit (1) is for be arranged on the printed circuit in PCB copper-clad plate.
7. a kind of small size ultra wideband power divider as claimed in claim 6, it is characterised in that: the other end of described line matching section (7) is connected with circuit board back copper sheet by metallization via (8), forms short-circuit condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620338907.3U CN205646094U (en) | 2016-04-21 | 2016-04-21 | Ware is divided to small -size ultra wide band merit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620338907.3U CN205646094U (en) | 2016-04-21 | 2016-04-21 | Ware is divided to small -size ultra wide band merit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205646094U true CN205646094U (en) | 2016-10-12 |
Family
ID=57062949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620338907.3U Withdrawn - After Issue CN205646094U (en) | 2016-04-21 | 2016-04-21 | Ware is divided to small -size ultra wide band merit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205646094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811065A (en) * | 2016-04-21 | 2016-07-27 | 广东通宇通讯股份有限公司 | Small-size ultra wideband power divider |
-
2016
- 2016-04-21 CN CN201620338907.3U patent/CN205646094U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811065A (en) * | 2016-04-21 | 2016-07-27 | 广东通宇通讯股份有限公司 | Small-size ultra wideband power divider |
| CN105811065B (en) * | 2016-04-21 | 2019-04-19 | 广东通宇通讯股份有限公司 | A kind of small size ultra wideband power divider |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161012 Effective date of abandoning: 20190419 |