CN108258377B - T-shaped coaxial power divider - Google Patents
T-shaped coaxial power divider Download PDFInfo
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- CN108258377B CN108258377B CN201711345237.3A CN201711345237A CN108258377B CN 108258377 B CN108258377 B CN 108258377B CN 201711345237 A CN201711345237 A CN 201711345237A CN 108258377 B CN108258377 B CN 108258377B
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- 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
- H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
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Abstract
The invention relates to a T-shaped coaxial power divider, which comprises a first section of inner conductor I, a third section of inner conductor I and a second section of inner conductor I; the first section inner conductor I and the second section inner conductor I are fixedly connected, and the second section inner conductor I and the third section inner conductor I are fixedly connected; a second section inner conductor II and a third section inner conductor II which are coaxial with the first section inner conductor I and are cylindrical are nested on the periphery of the first section inner conductor I; the second section inner conductor II is positioned between the second section inner conductor I and the third section inner conductor II, and the end part, far away from the second section inner conductor I, of the second section inner conductor II is fixedly connected with one end part of the third section inner conductor II; a gap is formed between the second section inner conductor II and the second section inner conductor I, and the inner diameter of the third section inner conductor II is smaller than that of the second section inner conductor II. The coaxial power divider has high voltage resistance and strong breakdown resistance, is easy for port impedance matching, can be directly connected with a high-power device, and meets the use requirement of a high-power circuit.
Description
Technical Field
The invention belongs to the field of radar communication design, and particularly relates to a T-shaped coaxial power divider.
Background
The coaxial power divider is a device which divides one path of input signal energy into two paths or multiple paths of energy with equal or unequal outputs, and can also combine multiple paths of signal energy into one path of energy for output, and at the moment, the coaxial power divider is also called a combiner and is mainly applied to network communication. The power divider plays an important role in the field of modern radar communication design.
The traditional power divider mostly adopts a microstrip or strip line structure, has low voltage resistance and poor breakdown resistance, and is mostly suitable for low-power circuits. However, under the condition of high power, the power divider with the microstrip and strip line structure has weak adaptability, is easy to damage, and is difficult to adapt to the high-power circuit frequently used at the present stage.
Disclosure of Invention
According to the problems in the prior art, the invention provides the T-shaped coaxial power divider which has high withstand voltage and strong breakdown resistance, is easy for port impedance matching, can be directly connected with a high-power device, and meets the use requirement of a high-power circuit.
The invention adopts the following technical scheme:
a T-shaped coaxial power divider comprises a first section of columnar coaxial inner conductor I, a third section of coaxial inner conductor I and a second section of coaxial inner conductor I, wherein the diameters of the first section of columnar coaxial power divider I, the third section of coaxial inner conductor I and the second section of coaxial inner conductor I are sequentially increased; the second section inner conductor I is positioned between the first section inner conductor I and the third section inner conductor I, and the first section inner conductor I, the second section inner conductor I and the third section inner conductor I are sequentially connected;
the periphery of the first section of inner conductor I is sleeved with a second section of inner conductor II and a third section of inner conductor II which are coaxial with the first section of inner conductor I and are cylindrical; the second section inner conductor II is positioned between the second section inner conductor I and the third section inner conductor II, and the end part, far away from the second section inner conductor I, of the second section inner conductor II is fixedly connected with one end part of the third section inner conductor II; a gap is formed between the second section inner conductor II and the second section inner conductor I, and the inner diameter of the third section inner conductor II is smaller than that of the second section inner conductor II;
cylindrical outer conductors coaxial with the first section inner conductor I are arranged on the peripheries of the first section inner conductor I, the second section inner conductor I, the third section inner conductor I, the second section inner conductor II and the third section inner conductor II; a feeding port is formed between the first section of inner conductor I and the third section of inner conductor II, a first branch port is formed between the third section of inner conductor I and the outer conductor, and a second branch port is formed between the third section of inner conductor II and the outer conductor.
Preferably, the first section of inner conductor I, the second section of inner conductor I, the third section of inner conductor I, the second section of inner conductor II and the third section of inner conductor II are all bare copper conductors.
Further preferably, the diameter of the second section inner conductor I is equal to the outer diameter and the length of the second section inner conductor II; the diameter of the third section of inner conductor I is equal to the outer diameter and the length of the third section of inner conductor II.
More preferably, the diameter of the first section inner conductor i is rnx1, the width of the gap between the second section inner conductor ii and the second section inner conductor i is hf, the diameter of the second section inner conductor i and the outer diameter of the second section inner conductor ii are both rnx2 and hnx2, the inner diameter of the second section inner conductor ii is rwx1, the diameter of the third section inner conductor i and the third section inner conductor ii are rnx3 and hnx3, and the inner diameter of the outer conductor is rwx 2; the rnx1, hf, rnx2, hnx2, rwx1, rnx3, hnx3 and rwx2 can be adjusted in size.
The invention has the beneficial effects that:
1) the coaxial power divider comprises a first section of inner conductor I, a third section of inner conductor I, a second section of inner conductor II and a third section of inner conductor II; the structure form of the coaxial power divider is formed by nesting and connecting the conductors; the electromagnetic wave is divided into two parts through the gap between the second section inner conductor II and the second section inner conductor I, and the exposed inner conductor plays the roles of impedance matching and resonance frequency adjustment on the electromagnetic wave, so that the coaxial power divider disclosed by the invention has the function of dividing one path of input signal energy into two paths of energy. The power divider has high voltage resistance and strong breakdown resistance, is easy for port impedance matching, can be directly connected with a high-power device, and meets the use requirement of a high-power circuit.
2) In the coaxial power divider, the diameter of a first section of inner conductor I is rnx1, the width of a gap between a second section of inner conductor II and the second section of inner conductor I is hf, the diameter of the second section of inner conductor I and the outer diameter of the second section of inner conductor II are both rnx2 and the length of the second section of inner conductor II is hnx2, the inner diameter of the second section of inner conductor II is rwx1, the diameter of the third section of inner conductor I and the third section of inner conductor II are rnx3 and the length of the third section of inner conductor II is hnx3, and the inner diameter of the outer conductor is rwx 2; the impedance characteristics of the coaxial power divider can be adjusted by adjusting rnx1, hf, rnx2, hnx2, rwx1, rnx3, hnx3 and rwx2, so that different coaxial power dividers can be designed according to working requirements.
Drawings
Fig. 1 is a structural sectional view of the coaxial power divider of the present invention.
Fig. 2 is a parameter labeled diagram of the coaxial power divider of the present invention.
Fig. 3 is a signal diagram of the coaxial power divider according to the present invention.
Fig. 4 is a diagram of return loss S11 of the feed port of the coaxial power divider according to the embodiment of the present invention.
Fig. 5 is a transmission curve diagram of the first branch port and the second branch port of the coaxial power splitter according to the embodiment of the present invention.
Reference numerals: 1-first section inner conductor I, 2-second section inner conductor I, 3-third section inner conductor I, 4-second section inner conductor II, 5-third section inner conductor II, 6-outer conductor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a T-shaped coaxial power divider includes a first section of coaxial inner conductor i 1, a third section of coaxial inner conductor i 3, and a second section of coaxial inner conductor i 2, whose columnar diameters are sequentially increased; the second section inner conductor I2 is positioned between the first section inner conductor I1 and the third section inner conductor I3, and the first section inner conductor I1, the second section inner conductor I2 and the third section inner conductor I3 are sequentially connected;
a second section inner conductor II 4 and a third section inner conductor II 5 which are coaxial with the first section inner conductor I1 and are cylindrical are nested on the periphery of the first section inner conductor I1; the second section inner conductor II 4 is positioned between the second section inner conductor I2 and the third section inner conductor II 5, and the end part, far away from the second section inner conductor I2, of the second section inner conductor II 4 is fixedly connected with one end part of the third section inner conductor II 5; a gap is formed between the second section inner conductor II 4 and the second section inner conductor I2, and the inner diameter of the third section inner conductor II 5 is smaller than that of the second section inner conductor II 4;
the peripheries of the first section of inner conductor I1, the second section of inner conductor I2, the third section of inner conductor I3, the second section of inner conductor II 4 and the third section of inner conductor II 5 are provided with cylindrical outer conductors 6 which are coaxial with the first section of inner conductor I1; a feeding port is formed between the first section of inner conductor I1 and the third section of inner conductor II 5, a first branch port is formed between the third section of inner conductor I3 and the outer conductor 6, and a second branch port is formed between the third section of inner conductor II 5 and the outer conductor 6.
As shown in fig. 4, the first section inner conductor i 1, the second section inner conductor i 2, the third section inner conductor i 3, the second section inner conductor ii 4, and the third section inner conductor ii 5 are all bare copper conductors.
The diameter of the second section inner conductor I2 is equal to the outer diameter and the length of the second section inner conductor II 4; the diameter of the third section of inner conductor I3 is equal to the outer diameter and the length of the third section of inner conductor II 5.
The diameter of the first section inner conductor I1 is rnx1, the width of a gap between the second section inner conductor II 4 and the second section inner conductor I2 is hf, the diameter of the second section inner conductor I2 and the outer diameter of the second section inner conductor II 4 are both rnx2, and the length of the second section inner conductor I4 is hnx2, the inner diameter of the second section inner conductor II 4 is rwx1, the diameter of the third section inner conductor I3 and the diameter of the third section inner conductor II 5 are rnx3, the length of the third section inner conductor I3 is hnx3, and the inner diameter of the outer conductor 6 is rwx 2; the rnx1, hf, rnx2, hnx2, rwx1, rnx3, hnx3 and rwx2 can be adjusted in size.
The antenna of the present invention will be described below by way of example.
Example 1:
the working frequency band of the coaxial power divider of this embodiment is 1GHz to 1.1GHz, the impedance of the feed port is 50 ohms, and the impedance of the first branch port and the second branch port is 100 ohms.
As shown in fig. 2, the diameter rnx1 of the first section inner conductor i 1 of the coaxial power divider of the present embodiment is 1.75mm, and the gap width hf between the second section inner conductor ii 4 and the second section inner conductor i 2 is 10 mm; the diameter of the second section inner conductor i 2 and the outer diameter rnx2 of the second section inner conductor ii 4 are 7.6mm, the length hnx2 is 55mm, and the inner diameter rwx1 of the second section inner conductor ii 4 is 4 mm; the diameter rnx3 of the third section inner conductor i 3 and the third section inner conductor ii 5 is 3.3mm, the length hnx3 is 20mm, and the inner diameter rwx2 of the outer conductor 6 is 17.5 mm.
As shown in fig. 3, electromagnetic waves are fed from a feed port a between a first section of inner conductor i 1 and a third section of inner conductor ii 5, enter a gap between a second section of inner conductor ii 4 and the first section of inner conductor i 1 through a gap between the first section of inner conductor i 1 and the third section of inner conductor ii 5, and are divided into two parts through a gap between the second section of inner conductor ii 4 and the second section of inner conductor i 2, wherein the exposed inner conductors of the first section of inner conductor ii 4 and the first section of inner conductor i 1 play roles in impedance matching and resonance frequency adjustment for the electromagnetic waves; the electromagnetic waves in two directions are transmitted towards the direction close to the third section of inner conductor I3 and the third section of inner conductor II 5 respectively, finally the electromagnetic waves in one direction are output through a first branch port B between the third section of inner conductor I3 and the outer conductor 6, and the electromagnetic waves in the other direction are output through a second branch port C between the third section of inner conductor II 5 and the outer conductor 6, so that the function that the coaxial power divider of the embodiment divides one path of input signal energy into two paths of energy is realized.
The operation performance of the coaxial power divider of the present embodiment is described by simulation.
As shown in fig. 4, fig. 4 is a diagram of return loss S11 of the feed port of the coaxial power divider of the present embodiment. As can be seen from fig. 4, the return loss of the feed port of the coaxial power divider of this embodiment is below-23 dB in the relative bandwidth of greater than 10% in the operating frequency band of 1GHz to 1.1GHz, which indicates that the impedance of the feed port is very easy to match.
As shown in fig. 5, fig. 5 is a transmission curve diagram of a first branch port and a second branch port of a coaxial power divider according to an embodiment of the present invention. As can be seen from fig. 5, in the coaxial power divider of this embodiment, in the operating frequency band of 1GHz to 1.1GHz, the amplitudes of the first branch port and the second branch port are both within the range of 3.02dB ± 0.2dB, and the insertion loss fluctuation of the whole band is small; the amplitude of the first branch port and the second branch port at the central frequency of 1.06GHz is 3.02dB, and the theoretical value is 3dB, so the insertion loss of the power divider is only 0.02dB, and the insertion loss is very small, therefore, the coaxial power divider provided by the embodiment of the invention has excellent transmission performance, meets the design requirement on telecommunication, and can meet the use requirement of a high-power circuit.
In summary, the present invention provides a T-type coaxial power divider, which has high withstand voltage, strong breakdown resistance, and easy port impedance matching, and can be directly connected to a high-power device, thereby meeting the use requirements of a high-power circuit.
Claims (4)
1. A T-shaped coaxial power divider is characterized in that: the coaxial cable comprises a columnar first section inner conductor I (1), a third section inner conductor I (3) and a second section inner conductor I (2), wherein the diameters of the first section inner conductor I, the third section inner conductor I and the second section inner conductor I are sequentially increased; the second section of inner conductor I (2) is positioned between the first section of inner conductor I (1) and the third section of inner conductor I (3), and the first section of inner conductor I (1), the second section of inner conductor I (2) and the third section of inner conductor I (3) are sequentially connected;
the periphery of the first section of inner conductor I (1) is sleeved with a second section of inner conductor II (4) and a third section of inner conductor II (5) which are coaxial with the first section of inner conductor I and are cylindrical; the second section inner conductor II (4) is positioned between the second section inner conductor I (2) and the third section inner conductor II (5), and the end part, far away from the second section inner conductor I (2), of the second section inner conductor II (4) is fixedly connected with one end part of the third section inner conductor II (5); a gap is formed between the second section inner conductor II (4) and the second section inner conductor I (2), and the inner diameter of the third section inner conductor II (5) is smaller than that of the second section inner conductor II (4);
the peripheries of the first section of inner conductor I (1), the second section of inner conductor I (2), the third section of inner conductor I (3), the second section of inner conductor II (4) and the third section of inner conductor II (5) are provided with cylindrical outer conductors (6) which are coaxial with the first section of inner conductor I (1); a feeding port is formed between the first section of inner conductor I (1) and the third section of inner conductor II (5), a first branch port is formed between the third section of inner conductor I (3) and the outer conductor (6), and a second branch port is formed between the third section of inner conductor II (5) and the outer conductor (6).
2. A T-type coaxial power divider as defined in claim 1, wherein: the first section of inner conductor I (1), the second section of inner conductor I (2), the third section of inner conductor I (3), the second section of inner conductor II (4) and the third section of inner conductor II (5) are all exposed copper conductors.
3. A T-type coaxial power divider as claimed in claim 1 or 2, characterized in that: the diameter of the second section inner conductor I (2) is equal to the outer diameter of the second section inner conductor II (4), and the lengths of the second section inner conductor I (2) and the second section inner conductor II (4) are equal; the diameter of the third section of inner conductor I (3) is equal to the outer diameter of the third section of inner conductor II (5), and the length of the third section of inner conductor I (3) is equal to the length of the third section of inner conductor II (5).
4. A T-type coaxial power divider as defined in claim 3, wherein: the diameter of the first section of inner conductor I (1) is rnx1, the width of a gap between the second section of inner conductor II (4) and the second section of inner conductor I (2) is hf, the diameter of the second section of inner conductor I (2) and the outer diameter of the second section of inner conductor II (4) are rnx2, the lengths of the second section of inner conductor I (2) and the second section of inner conductor II (4) are hnx2, the inner diameter of the second section of inner conductor II (4) is rwx1, the diameter of the third section of inner conductor I (3) and the outer diameter of the third section of inner conductor II (5) are rnx3, the length of the third section of inner conductor I (3) and the length of the third section of inner conductor II (5) are hnx3, and the inner diameter of the outer conductor (6) is rwx 2; the rnx1, hf, rnx2, hnx2, rwx1, rnx3, hnx3 and rwx2 can be adjusted in size.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711345237.3A CN108258377B (en) | 2017-12-15 | 2017-12-15 | T-shaped coaxial power divider |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711345237.3A CN108258377B (en) | 2017-12-15 | 2017-12-15 | T-shaped coaxial power divider |
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| CN108258377A CN108258377A (en) | 2018-07-06 |
| CN108258377B true CN108258377B (en) | 2020-04-14 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201345406Y (en) * | 2009-01-20 | 2009-11-11 | 段廷逵 | Chamber power divider |
| CN204577547U (en) * | 2015-05-19 | 2015-08-19 | 深圳市浩丰科技股份有限公司 | A kind of communication cavity component |
| CN104900958A (en) * | 2014-10-06 | 2015-09-09 | 合肥佳瑞林电子技术有限公司 | Power divider |
| RU2621887C1 (en) * | 2016-03-21 | 2017-06-07 | Акционерное общество "Научно-производственная фирма "Микран" | Ultra-wideband microstrip power divider |
-
2017
- 2017-12-15 CN CN201711345237.3A patent/CN108258377B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201345406Y (en) * | 2009-01-20 | 2009-11-11 | 段廷逵 | Chamber power divider |
| CN104900958A (en) * | 2014-10-06 | 2015-09-09 | 合肥佳瑞林电子技术有限公司 | Power divider |
| CN204577547U (en) * | 2015-05-19 | 2015-08-19 | 深圳市浩丰科技股份有限公司 | A kind of communication cavity component |
| RU2621887C1 (en) * | 2016-03-21 | 2017-06-07 | Акционерное общество "Научно-производственная фирма "Микран" | Ultra-wideband microstrip power divider |
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| CN108258377A (en) | 2018-07-06 |
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