CN205028994U - Ware is divided to ultra wide band merit based on T type branch - Google Patents
Ware is divided to ultra wide band merit based on T type branch Download PDFInfo
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- CN205028994U CN205028994U CN201520830564.8U CN201520830564U CN205028994U CN 205028994 U CN205028994 U CN 205028994U CN 201520830564 U CN201520830564 U CN 201520830564U CN 205028994 U CN205028994 U CN 205028994U
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- microstrip line
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- shaped branch
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Abstract
The utility model discloses a ware is divided to ultra wide band merit based on T type branch, this merit divides the ware to include upper microstrip structure, isolated component, middle medium base plate and underlying metal floor, upper strata microstrip structure is by input section's transmission line, T type branch, three I/O (IO) port component, the merit divides the ware through increasing a transfer mode, makes the bandwidth widen, obtains the free transmission range and arrives 3.5GHz for 1.7GHz, be greater than 15dB at two output port with resistance and electric capacity messenger isolation, through using short circuit minor matters line, additionally produce a transmission zero, symmetrical structure makes the merit to divide branch homophases such as ware output.
Description
Technical field
The utility model relates to technology for radio frequency field, particularly relates to a kind of ultra wideband power divider based on T-shaped branch.
Background technology
During existing power divider, input signal power is divided into a kind of multiport microwave network that equal or unequal a few road exports.Along with the fast development of wireless communication technology, the carrier frequency of various communication system improves constantly, the high-frequency electron device of miniaturized low-power consumption and circuit design microwave technology is played advantage, actual requirement is reached in order to make the gain of system, the transmission of many ripples must be realized, namely power is distributed.Power splitter is widely used in the feed system of antenna, receives both at home and abroad extensively research.In the past few decades, have in a large number about the research of power divider.The focus of research is to widen frequency band, reduces area, double frequency response and harmonics restraint.
Nineteen sixty, EmestJ.Wilkinson delivered in the paper of AnN-wayhybridPowerDivider by name describe a kind ofly all to mate at all of the port, low-loss, high-isolation, the N port power divider of homophase and Wilkinson power divider.Its evolution process experienced by initial coaxial form, till now the form of widely used microstrip line and strip line, also has the air strip line be back to use under high-power and aircoaxial form in addition.
But the communication technology is maked rapid progress now, military scientific and technological fast development, adds encouragement and competition between the current communications industry, and traditional Wilkinson power splitter, owing to only can work in single frequency band or odd harmonic, is far not by far up to the mark.
The narrow bandwidths of traditional Wilkinson power divider limits its application in broadband system.In order to widen bandwidth of operation further, with the Wide Band Power distributor of more piece, can namely increase the number of λ g/4 line segment and corresponding isolation resistance.But the consequence of design is like this exactly cause the size of circuit too huge, for the integrated of later device is made troubles, is unfavorable for the processing in later stage.
Summary of the invention
For solving the problems of the technologies described above, the purpose of this utility model is to provide a kind of ultra wideband power divider based on T-shaped branch, and this power splitter size is little, bandwidth is 1.7GHz to 3.5GHz, and in operating frequency, isolation is greater than 15dB, and point phase place such as output signal power is identical.
The purpose of this utility model is realized by following technical scheme:
A kind of ultra wideband power divider based on T-shaped branch, comprise: upper-layer micro-strip structure, isolated component, intermediate medium substrate and underlying metal floor, upper-layer micro-strip structure is arranged on the upper surface of intermediate medium substrate, and underlying metal floor is arranged on the lower surface of intermediate medium substrate;
Described upper-layer micro-strip structure comprises input transmission line, T-shaped branch, short branch line and input/output end port; The mid portion of described input transmission line is set to the larger low-impedance line of width; Described short branch line is arranged on the junction of input transmission line and T-shaped branch; Isolated component is provided with between described output port.
Compared with prior art, one or more embodiment of the present utility model can have the following advantages by tool:
Utilize importation that the larger low-impedance line of width is set, realize bimodulus power splitter, add bandwidth, reduce circuit size;
The isolated component connected between output port comprises electric capacity and resistance, adds isolation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the ultra wideband power divider based on T-shaped branch;
Fig. 2 is the size marking figure of the ultra wideband power divider based on T-shaped branch;
Fig. 3 is S
23parameter, S
11parameter, S
31parameter and S
21the experimental result picture of parameter;
Fig. 4 is S
31parameter and S
21the experimental result picture of parameter phase difference and amplitude difference.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with embodiment and accompanying drawing, the utility model execution mode is described in further detail.
As shown in Figure 1, for the ultra wideband power divider structure based on T-shaped branch, comprise upper-layer micro-strip structure, isolated component, intermediate medium substrate and underlying metal floor, upper-layer micro-strip structure is arranged on the upper surface of intermediate medium substrate, and underlying metal floor is arranged on the lower surface of intermediate medium substrate;
Described upper-layer micro-strip structure comprises input transmission line, T-shaped branch, short branch line and input/output end port; The mid portion of described input transmission line is set to the larger low-impedance line of width; Described short branch line is arranged on the junction of input transmission line and T-shaped branch; Isolated component is provided with between described output port.
Above-mentioned larger low-impedance line, can be used for realizing bimodulus power splitter, increases bandwidth; Above-mentioned short circuit branch line is arranged on the junction of input transmission line and T-shaped branch, is used for producing transmission zero, realizes the control to bandwidth.
Above-mentioned input transmission line is connected with the main transmission line of T-shaped branch, wherein has two output ports to be positioned on two branch lines of T-shaped branch, and symmetrical up and down.
Above-mentioned input transmission line is formed by connecting in turn by the first microstrip line 1, second microstrip line 2, the 3rd microstrip line 3, the 4th microstrip line 4 and the 5th microstrip line 5;
Described short branch line is formed by connecting in turn by the 6th microstrip line 6, the 7th microstrip line 7, the 8th microstrip line 8 and the 9th microstrip line 9, and wherein one end of the 9th microstrip line is by metallization via hole 18 ground connection;
Described T-shaped branch is made up of main transmission line and two symmetrical branch lines, comprises the 11 microstrip line the 11, the 12 microstrip line the 12, the 13 microstrip line the 13, the 14 microstrip line the 14, the 15 microstrip line the 15, the 16 microstrip line the 16 and the 17 microstrip line 17; One end of 16 microstrip line is connected with the first output port, and one end of the 17 microstrip line is connected with the second output port.
Above-mentioned isolated component is connected between the 12 microstrip line and the 13 microstrip line, and isolated component comprises the identical resistance 19 of two resistances and an electric capacity 20; Described resistance is separately positioned on the two ends of electric capacity.
The half of the guide wavelength corresponding to frequency of the transmission zero that the length of above-mentioned short branch line produces for this short branch line.
As shown in Figure 2, be the design of the splitters such as the broadband that the present embodiment provides, following (but being not limited in this size): the W of physical circuit size Selection
1=W
3=W
5=W
8=W
10=1.86mm, W
2=1.8mm, W
4=3.4mm, W
6=2mm, W
7=0.6mm, W
9=1.6mm, L
1=8.1mm, L
2=4.5mm, L
3=0.1mm, L
4=9.78mm, L
5=0.6mm, L
6=1mm, L
7=2.4mm, L
8=10mm, L
9=2.1mm, L
10=6.2mm, L
11=2mm, L
12=9.64mm, L
13=4.46mm, L
14=3.4mm, r
1=0.15mm.In the design, the loading capacitance value C of isolated component is 1.3pF, resistance value R
1=R
2be 30 Ω, medium substrate used is Rogers4003.Circuit integrity is of a size of 32.5mm × 14.6mm.
Be illustrated in figure 3 S
23parameter, S
11parameter, S
31parameter and S
21the experimental result picture of parameter, known, bandwidth is 1.7GHz to 3.5GHz and isolation is greater than 15dB.Two-port output signal decile in passband.
As shown in Figure 4, for being S
31parameter and S
21the experimental result picture of parameter phase difference, known, two output signal homophases.
The ultra wideband power divider based on T-shaped branch that above-described embodiment provides, has broadband, isolation is high, volume is little excellent properties, is applicable to being applied in the radio-frequency front-end of wireless communication system.
Although the execution mode disclosed by the utility model is as above, the execution mode that described content just adopts for the ease of understanding the utility model, and be not used to limit the utility model.Technical staff in any the utility model art; under the prerequisite not departing from the spirit and scope disclosed by the utility model; any amendment and change can be done what implement in form and in details; but scope of patent protection of the present utility model, the scope that still must define with appending claims is as the criterion.
Claims (5)
1. the ultra wideband power divider based on T-shaped branch, comprise upper-layer micro-strip structure, isolated component, intermediate medium substrate and underlying metal floor, upper-layer micro-strip structure is arranged on the upper surface of intermediate medium substrate, and underlying metal floor is arranged on the lower surface of intermediate medium substrate; It is characterized in that,
Described upper-layer micro-strip structure comprises input transmission line, T-shaped branch, short branch line and input/output end port; The mid portion of described input transmission line is set to the larger low-impedance line of width; Described short branch line is arranged on the junction of input transmission line and T-shaped branch; Isolated component is provided with between described output port.
2. as claimed in claim 1 based on the ultra wideband power divider of T-shaped branch, it is characterized in that, described input transmission line is connected with the main transmission line of T-shaped branch, wherein has two output ports to be positioned on two branch lines of T-shaped branch, and symmetrical up and down.
3., as claimed in claim 1 based on the ultra wideband power divider of T-shaped branch, it is characterized in that,
Described input transmission line is formed by connecting in turn by the first microstrip line, the second microstrip line, the 3rd microstrip line, the 4th microstrip line and the 5th microstrip line;
Described short branch line is formed by connecting in turn by the 6th microstrip line, the 7th microstrip line, the 8th microstrip line and the 9th microstrip line, and wherein one end of the 9th microstrip line is by metallization via hole ground connection;
Described T-shaped branch is made up of main transmission line and two symmetrical branch lines, comprises the 11 microstrip line, the 12 microstrip line, the 13 microstrip line, the 14 microstrip line, the 15 microstrip line, the 16 microstrip line and the 17 microstrip line; One end of 16 microstrip line is connected with the first output port, and one end of the 17 microstrip line is connected with the second output port.
4., as claimed in claim 1 based on the ultra wideband power divider of T-shaped branch, it is characterized in that, described isolated component is connected between the 12 microstrip line and the 13 microstrip line, and isolated component comprises the electric capacity resistance identical with two resistances; Described resistance is separately positioned on the two ends of electric capacity.
5. as claimed in claim 1 based on the ultra wideband power divider of T-shaped branch, it is characterized in that, the half of the guide wavelength corresponding to the transmission zero frequency that the length of described short branch line produces for this short branch line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520830564.8U CN205028994U (en) | 2015-10-22 | 2015-10-22 | Ware is divided to ultra wide band merit based on T type branch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520830564.8U CN205028994U (en) | 2015-10-22 | 2015-10-22 | Ware is divided to ultra wide band merit based on T type branch |
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|---|---|
| CN205028994U true CN205028994U (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520830564.8U Expired - Fee Related CN205028994U (en) | 2015-10-22 | 2015-10-22 | Ware is divided to ultra wide band merit based on T type branch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915074A (en) * | 2016-04-25 | 2016-08-31 | 华南理工大学 | Broadband high-efficiency microwave rectifier |
| CN107275740A (en) * | 2017-05-31 | 2017-10-20 | 南京邮电大学 | It is a kind of that there is the dual-frequency power divider for transmitting null character |
-
2015
- 2015-10-22 CN CN201520830564.8U patent/CN205028994U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915074A (en) * | 2016-04-25 | 2016-08-31 | 华南理工大学 | Broadband high-efficiency microwave rectifier |
| CN105915074B (en) * | 2016-04-25 | 2018-10-09 | 华南理工大学 | A kind of efficient microwave rectifier of broadband |
| CN107275740A (en) * | 2017-05-31 | 2017-10-20 | 南京邮电大学 | It is a kind of that there is the dual-frequency power divider for transmitting null character |
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| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20181022 |