CN105449332A - 3dB electrical bridge - Google Patents
3dB electrical bridge Download PDFInfo
- Publication number
- CN105449332A CN105449332A CN201610050621.XA CN201610050621A CN105449332A CN 105449332 A CN105449332 A CN 105449332A CN 201610050621 A CN201610050621 A CN 201610050621A CN 105449332 A CN105449332 A CN 105449332A
- Authority
- CN
- China
- Prior art keywords
- road
- arm
- electric bridge
- sheet
- banded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
- G01R17/10—AC or DC measuring bridges
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention discloses a 3dB electrical bridge which comprises a first combiner disc and a second combiner disc used for being coupled with the first combiner disc. By means of excellent structural design, good electrical performance is achieved, the practicability of the 3dB electrical bridge is greatly improved, and the 3dB electrical bridge is simple in structure, not prone to damage and long in service life.
Description
Technical field
The present invention relates to a kind of 3dB electric bridge.
Background technology
In same frequency combiner, main component is exactly 3dB electric bridge, and 3dB electric bridge is a kind of electric device carrying out signal identical for two kinds of frequencies being coupled into a road signal and export; It requires that the degree of coupling is high, and accurately, frequency range is wide, is widely used in the communications industry, and 3dB in the market, for reaching wideband object, adopts different coupling line forms, causes the problems such as the return loss of each port is poor, other electric properties are low.
Summary of the invention
The object of the invention is to overcome above-described shortcoming, a kind of 3dB electric bridge is provided.
For achieving the above object, concrete scheme of the present invention is as follows: a kind of 3dB electric bridge include the first conjunction road dish and for first close road coil carry out being coupled second close road and coil;
Described first closes road dish includes annular arm, and also include the Zi He road sheet of the setting multiple triangular in shape that annularly arm is provided with, every height closes the center of circle of an angle towards annular arm of road sheet; Distance between often adjacent Liang Gezihe road sheet is all identical; Each described Zi He road sheet is provided with a banded dead slot near the side at annular arm center; The Zi He road sheet of top has extended upward first input end, and the Zi He road sheet of below is extended with the first output downwards;
Institute second closes road dish and includes disk arm, and the edge of described disk arm extends outward multiple banded arm matched with banded dead slot respectively, and the free end of banded arm is provided with one section of arc coupling arm; The left and right sides of described disk arm is all extended connecting rod, and the free end of left-side connecting bar is provided with the second input, and the free end of right-side connecting bar is provided with the second output;
The radius of described disk arm is greater than the minimum range in the center of circle of Zi He road sheet and annular arm; Described connecting rod is provided with the first via hole, and described annular arm is provided with second via hole corresponding with the first via hole; Also include and close road dish by first and close road and coil with second the card column be arranged in parallel, described card column is arranged in the first via hole and the second via hole.
Wherein, the two ends of described banded dead slot are arc.
Wherein, the number of described Zi He road sheet is six.
Wherein, the number of described Zi He road sheet is six.
Wherein, the diameter of described annular arm is 8cm-10cm.
Wherein, the diameter of described disk arm is 5cm-7cm.
Wherein, described Zi He road sheet is equilateral triangle, described Zi He road sheet be turned into L, the diameter of described disk arm is N, described L=N*0.759.
Wherein, the center of described disk arm is also provided with a circular hole;
Wherein, described disk arm is also provided with two T-slots be centrosymmetric;
Beneficial effect of the present invention is: by excellent structural design, achieves good electric property, and its practicality increases greatly, and its structure is simple, not easily bad, long service life.
Accompanying drawing explanation
Fig. 1 is the of the present invention first vertical view closing road dish;
Fig. 2 is the of the present invention second vertical view closing road dish;
Fig. 3 is vertical view of the present invention;
Fig. 4 is sectional view of the present invention;
Fig. 5 is the resolution chart of the phase difference when testing in working band between S21 and S31 two paths of the present invention.
Fig. 6 be the present invention in frequency range, the return loss resolution chart of each port;
Description of reference numerals in Fig. 1 to Fig. 6:
1-first closes road dish; 11-annular arm; 12-Zi He road sheet; The banded dead slot of 13-; 14-second via hole; 15-first input end; 16-first output;
2-second closes road dish; 21-disk arm; The banded arm of 22-; 23-arc coupling arm; 24-connecting rod; 25-first via hole; 26-second input; 27-second output; 28-T shape groove; 29-circular hole;
3-card column.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation, is not practical range of the present invention is confined to this.
As shown in Figures 1 to 6, a kind of 3dB electric bridge described in the present embodiment, include the first conjunction road dish 1 and for first close road coil 1 carry out being coupled second close road and coil 2; Described first closes road dish 1 includes annular arm 11, and also include the Zi He road sheet 12 of the setting multiple triangular in shape that annularly arm 11 is provided with, every height closes the center of circle of an angle towards annular arm 11 of road sheet 12; Distance between often adjacent Liang Gezihe road sheet 12 is all identical; Each described Zi He road sheet 12 is provided with a banded dead slot 13 near the side at annular arm 11 center; The Zi He road sheet 12 of top has extended upward first input end 15, and the Zi He road sheet 12 of below is extended with the first output 16 downwards; Institute second closes road dish 2 and includes disk arm 21, and the edge of described disk arm 21 extends outward multiple banded arm 22 matched with banded dead slot 13 respectively, and the free end of banded arm 22 is provided with one section of arc coupling arm 23; The left and right sides of described disk arm 21 is all extended connecting rod 24, and the free end of left-side connecting bar 24 is provided with the second input 26, and the free end of right-side connecting bar 24 is provided with the second output 27; The radius of described disk arm 21 is greater than the minimum range in the center of circle of Zi He road sheet 12 and annular arm 11; Described connecting rod 24 is provided with the first via hole 25, and described annular arm 11 is provided with second via hole 14 corresponding with the first via hole 25; Also include and close road dish 1 and second by first and close road and coil 2 card columns be arranged in parallel 3, described card column 3 is arranged in the first via hole 25 and the second via hole 14, through more than 500 times experiments and analog simulation, finally determine this planform, by the actual test of final network analyzer, the phase difference of its input and output is at 90 degree, inclined value is no more than ± and 3 degree, as described in Figure 5, the phase difference in working band between S21 and S31 two paths is less than 3 °, and its amplitude balance is about 0.02dB.Return loss, as described in Figure 6.In 450MHz frequency range, the return loss of each port is all below-30dB, and namely standing-wave ratio VSWR is less than 1.1, namely show, the electric bridge of this structure not only achieves the scheme of small size, and has the electric property that communicates preferably, meets the major parameter requirement of 450M frequency.
A kind of 3dB electric bridge described in the present embodiment, the two ends of described banded dead slot 13 are arc.A kind of 3dB electric bridge described in the present embodiment, the number of described Zi He road sheet 12 is six; A kind of 3dB electric bridge described in the present embodiment, the number of described Zi He road sheet 12 is six.This structure and quantity are the optimal values and quantity that find in actual test, and this numerical value and quantity all have obvious lifting to properties.
A kind of 3dB electric bridge described in the present embodiment, the diameter of described annular arm 11 is 8cm-10cm.A kind of 3dB electric bridge described in the present embodiment, the diameter of described disk arm 21 is 5cm-7cm.Find in the middle of reality test, during this angular range value, the phase difference of its input of this electric bridge and output is highly stable at about 90 degree, and inclined value is no more than ± and 3 degree.
A kind of 3dB electric bridge described in the present embodiment, the center of described disk arm 21 is also provided with a circular hole 29; Can effectively increase isolation of the present invention, its isolation, in the middle of reality test, reaches below-30dB.
A kind of 3dB electric bridge described in the present embodiment, described disk arm 21 is also provided with two T-slots be centrosymmetric 28; It can improve the degree of coupling further, Loss reducing.
A kind of 3dB electric bridge described in the present embodiment, described Zi He road sheet 12 is equilateral triangle, described Zi He road sheet 12 be turned into L, the diameter of described disk arm 21 is N, described L=N*0.759.When optimum configurations becomes these data, its effect is more excellent, and the degree of coupling is higher, and Loss reducing clearly.
The above is only a preferred embodiment of the present invention, therefore all equivalences done according to structure, feature and the principle described in patent claim of the present invention change or modify, and are included in the protection range of patent application of the present invention.
Claims (8)
1. a 3dB electric bridge, is characterized in that: include the first conjunction road dish (1) and for first close that road coils that (1) carry out being coupled second close road and coil (2):; Described second closes road dish (2) includes disk arm (21).
2. a kind of 3dB electric bridge according to claim 1, is characterized in that: described first closes road dish (1) includes annular arm (11);
Described first closes Zi He road sheet (12) that road dish (1) also includes the setting multiple triangular in shape that annularly arm (11) is provided with, and every height closes the center of circle of an angle towards annular arm (11) on road sheet (12); Distance between often adjacent Liang Gezihe road sheet (12) is all identical; Each described Zi He road sheet (12) is provided with a banded dead slot (13) near the side at annular arm (11) center; Zi He road sheet (12) of top has extended upward first input end (15), and Zi He road sheet (12) of below is extended with the first output (16) downwards;
The edge of described disk arm (21) extends outward multiple banded arm (22) matched with banded dead slot (13) respectively, and the free end of banded arm (22) is provided with one section of arc coupling arm (23); The left and right sides of described disk arm (21) is all extended connecting rod (24), and the free end of left-side connecting bar (24) is provided with the second input (26), and the free end of right-side connecting bar (24) is provided with the second output (27);
The radius of described disk arm (21) is greater than the minimum range in the center of circle of Zi He road sheet (12) and annular arm (11); Described connecting rod (24) is provided with the first via hole (25), and described annular arm (11) is provided with second via hole (14) corresponding with the first via hole (25); Also include and to close road dish (1) and second by first and close road and coil the card column (3) that (2) be arranged in parallel, described card column (3) is arranged in the first via hole (25) and the second via hole (14).
3. a kind of 3dB electric bridge according to claim 2, is characterized in that: the two ends of described banded dead slot (13) are arc.
4. a kind of 3dB electric bridge according to claim 2, is characterized in that: the number of described Zi He road sheet (12) is six.
5. a kind of 3dB electric bridge according to claim 2, is characterized in that: the number of described Zi He road sheet (12) is six.
6. a kind of 3dB electric bridge according to claim 2, is characterized in that: the diameter of described annular arm (11) is 8cm-10cm.
7. a kind of 3dB electric bridge according to claim 2, is characterized in that: the diameter of described disk arm (21) is 5cm-7cm.
8. a kind of 3dB electric bridge according to claim 2, is characterized in that: described Zi He road sheet (12) is equilateral triangle, described Zi He road sheet (12) be turned into L, the diameter of described disk arm (21) is N, described L=N*0.759.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050621.XA CN105449332A (en) | 2016-01-26 | 2016-01-26 | 3dB electrical bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050621.XA CN105449332A (en) | 2016-01-26 | 2016-01-26 | 3dB electrical bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105449332A true CN105449332A (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610050621.XA Pending CN105449332A (en) | 2016-01-26 | 2016-01-26 | 3dB electrical bridge |
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| Country | Link |
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| CN (1) | CN105449332A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461887A (en) * | 2017-05-25 | 2018-08-28 | 东莞质研工业设计服务有限公司 | A kind of double same frequency combiners of coupling |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203456571U (en) * | 2013-09-09 | 2014-02-26 | 深圳国人通信有限公司 | 3dB bridge |
| CN203932273U (en) * | 2014-04-08 | 2014-11-05 | 吴俊伟 | A kind of have a same frequency combiner of disturbing mutually the 3dB of portion electric bridge |
| CN204441437U (en) * | 2014-12-31 | 2015-07-01 | 合肥昌顺电子科技有限公司 | A kind of base station 3DB electric bridge |
-
2016
- 2016-01-26 CN CN201610050621.XA patent/CN105449332A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203456571U (en) * | 2013-09-09 | 2014-02-26 | 深圳国人通信有限公司 | 3dB bridge |
| CN203932273U (en) * | 2014-04-08 | 2014-11-05 | 吴俊伟 | A kind of have a same frequency combiner of disturbing mutually the 3dB of portion electric bridge |
| CN204441437U (en) * | 2014-12-31 | 2015-07-01 | 合肥昌顺电子科技有限公司 | A kind of base station 3DB electric bridge |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461887A (en) * | 2017-05-25 | 2018-08-28 | 东莞质研工业设计服务有限公司 | A kind of double same frequency combiners of coupling |
| CN108461887B (en) * | 2017-05-25 | 2019-10-08 | 山西宇翔信息技术有限公司 | A kind of double same frequency combiners of coupling |
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Application publication date: 20160330 |
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