CN103872418A - Micro-strip one-to-two power divider - Google Patents
Micro-strip one-to-two power divider Download PDFInfo
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- CN103872418A CN103872418A CN201410111911.1A CN201410111911A CN103872418A CN 103872418 A CN103872418 A CN 103872418A CN 201410111911 A CN201410111911 A CN 201410111911A CN 103872418 A CN103872418 A CN 103872418A
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Abstract
The invention relates to a micro-strip one-to-two power divider. The micro-strip one-to-two power divider comprises a second U-shaped micro-strip line and a first micro-strip line connected to the center of the second U-shaped micro-strip line. The micro-strip one-to-two power divider is characterized in that the first micro-strip line extends by lambda/4 reversely, and the extending end is provided with a first short-circuit metal cylinder; alternatively, the two ends of the bottom of the second U-shaped micro-strip line respectively and reversely extend by a lambda/4 micro-strip line, and the extending ends are respectively provided with a second short-circuit metal cylinder; alternatively, two edges of the second U-shaped micro-strip line respectively and reversely extend by a lambda/4 micro-strip line, and the extending ends are respectively provided with a third short-circuit metal cylinder. By means of the micro-strip one-to-two power divider, corner cut of a traditional feeder line is avoided, energy can be intensively transmitted to an output port, and therefore gain and front efficiency of a micro-strip antenna array are obviously improved. The micro-strip one-to-two power divider has the advantage that insertion loss is reduced by about 0.9 dB at the 8 mm frequency band compared with a traditional one-to-two power divider.
Description
Technical field
The invention belongs to antenna technical field, be specifically related to a kind of micro-band one-to-two power splitter.
Background technology
Microstrip antenna is one of important way of realization of antenna, has low section, lightweight, easily conformal, easy making, low cost and easily and the advantage such as circuit is integrated, has a wide range of applications at wireless communication field.Microband antenna unit gain generally only has 6～8dB, in order to obtain larger gain, or in order to realize certain party tropism requirement, often adopts by micro-micro-strip array antenna forming with radiation element.
Microstrip antenna array parallel feed network is made up of one-to-two power splitter, and traditional power splitter Insertion Loss is larger, in the time that array element number is more, also corresponding increasing of required power splitter number, thus cause front gain and front radiation efficiency very low.
The larger reason of tradition one-to-two power splitter loss has two:
One, one-to-two power splitter, in T-shaped junction due to circuit discontinuity, makes energy emission larger.
Two, in feeding network, inevitably adopt right-angle turning to meet cabling requirement, at right-angle turning place, circuit discontinuity is also larger, thereby energy emission is larger.
In order to solve the energy emission problem of above-mentioned two positions, traditional power splitter adopts the method for corner cut more, makes the circuit transitions smooth of trying one's best by corner cut.But in fact, even if adopt the way of corner cut, the radiation of energy is still larger, this will cause circuit Insertion Loss to become large, the gain step-down of aerial array.When array element number more (as 16x16 unit), the number of one-to-two power splitter is also corresponding more, due to the stack of energy loss, makes antenna array gain and front radiation efficiency very low, and therefore large-scale microstrip array cannot be applied.
Summary of the invention
The technical problem solving
For fear of the deficiencies in the prior art part, the present invention proposes a kind of micro-band one-to-two power splitter, solves the large shortcoming of millimeter wave microstrip power splitter Insertion Loss, can be applied to the dual-use product scope that the large-scale array of 8mm frequency range is had relatively high expectations to gain.
Technical scheme
A kind of micro-band one-to-two power splitter, comprises concave shape the second microstrip line and the first microstrip line 1 that is connected to its center; It is characterized in that: by the first microstrip line 1 reverse extending λ/4, elongated end is provided with the first short circuit metal cylinder 2; Or by the second reverse extending λ/4, two ends, microstrip line concave shape bottom microstrip line 3, elongated end is provided with the second short circuit metal cylinder 4; Or by the second reverse extending λ/4, microstrip line concave shape both sides microstrip line 5, elongated end is provided with the 3rd short circuit metal cylinder 6.
In the time of the first microstrip line 1 reverse extending λ/4, by the second reverse extending λ/4, two ends, microstrip line concave shape bottom microstrip line 3; Or by the second reverse extending λ/4, microstrip line concave shape both sides microstrip line 5.
In the time of the second reverse extending λ/4, two ends, microstrip line concave shape bottom microstrip line 3, by the second reverse extending λ/4, microstrip line concave shape both sides microstrip line 5.
In the time of the second reverse extending λ/4, microstrip line concave shape both sides microstrip line 5, by the first microstrip line 1 reverse extending λ/41.
Beneficial effect
The micro-band one-to-two of the one power splitter that the present invention proposes, T-shaped junction and right-angle turning place to traditional one-to-two microstrip power divider improve;
One, abandon the structure of corner cut in T-shaped junction, adopt micro-band short-circuit line of reverse extending λ/4, make original T-shaped handing-over become cross handing-over, and connect short circuit metal column at reverse extending line end, make ripple that short circuit end reflection returns and incident wave with superimposed by this way, thereby reduce the radiation of the energy of junction.
Two, abandon the way of corner cut at right-angle turning place, adopt two sections of micro-band short-circuit lines of the reverse extending being perpendicular to one another, make original right-angle turning become cross structure, and connect short circuit metal column at reverse extending line end, make by this method corner circuit discontinuity reduce, energy reflection reduces.
The present invention program has avoided traditional feeder line " corner cut ", makes energy can intensively be transferred to output port, all increases significantly like this for gain and the front efficiency of micro-strip antenna array.Beneficial effect: reduce about 0.9dB compared to traditional one-to-two power splitter Insertion Loss in 8mm frequency range.
Brief description of the drawings
Fig. 1: the structural representation of the embodiment of the present invention 1;
Fig. 2: the structural representation of the embodiment of the present invention 2;
Fig. 3: the structural representation of the embodiment of the present invention 3;
1-the first microstrip line, 2-the first short circuit metal cylinder, 3-the second reverse extending λ/4, two ends, microstrip line concave shape bottom microstrip line, 4-the second short circuit metal cylinder 4,5-the second reverse extending λ/4, microstrip line concave shape both sides microstrip line, 6-the 3rd short circuit metal cylinder.
Embodiment
Now in conjunction with the embodiments, the invention will be further described for accompanying drawing:
The micro-supporter with one-to-two power splitter of the present invention is medium substrate, one side is metal floor, an other side is that merit is divided circuit, mainly comprise that microstrip feed line, impedance matching transforming section, the micro-band of cross junction λ/4 short circuit regulate section, two groups of micro-bands in right-angle turning place regulate section, five short circuit metal cylinders, two output port microstrip line compositions.
Embodiment 1: first propose to improve for the T-shaped junction of traditional one-to-two power splitter energy reflection problems, save corner cut, by micro-T-shaped junction band transformer section reverse extending λ/4(1), form cross handing-over, and add short circuit metal cylinder (2) at the end of reverse extending microstrip line, the discontinuity of circuit is reduced, form and improve 1 type power splitter, structure chart is shown in Fig. 1.The power splitter of this form and traditional power splitter are compared with 8mm frequency range, and Insertion Loss reduces about 0.39dB.Visible, improving 1 pattern has significant reduction for the energy loss of junction.
Embodiment 2: in order to reduce the energy emission of traditional one-to-two power splitter at right-angle turning place, take to be similar to improving one's methods of T-shaped junction, save corner cut in corner, reverse extending λ/4 microstrip lines (3), and add endways short circuit metal cylinder (4), form the power splitter of structure as shown in Figure 2, structure chart as shown in Figure 2.This form power splitter is compared with improving 1 type power splitter, and Insertion Loss reduces about 0.2dB, and improving as seen 2 type power splitters has had further reduction for energy loss.
Embodiment 3: improving on the basis of 2 type power splitters, increasing a pair of micro-band and regulate line (5), and adopt endways short circuit metal cylinder (6), making corner become cross, power divider structure as shown in Figure 3.This is final one-to-two power splitter form of the present invention, and its Insertion Loss reduces again about 0.31dB compared to improving 2 type power splitters, reduces about 0.9dB compared to traditional form power splitter.
Claims (4)
1. a micro-band one-to-two power splitter, comprises concave shape the second microstrip line and the first microstrip line (1) that is connected to its center; It is characterized in that: by the first microstrip line (1) reverse extending λ/4, elongated end is provided with the first short circuit metal cylinder (2); Or by the second microstrip line concave shape bottom reverse extending λ/4, two ends microstrip lines (3), elongated end is provided with the second short circuit metal cylinder (4); Or by the second microstrip line concave shape both sides reverse extending λ/4 microstrip lines (5), elongated end is provided with the 3rd short circuit metal cylinder (6).
2. micro-band one-to-two power splitter according to claim 1, is characterized in that: in the time of the first microstrip line 1 reverse extending λ/4, by the second microstrip line concave shape bottom reverse extending λ/4, two ends microstrip lines (3); Or by the second microstrip line concave shape both sides reverse extending λ/4 microstrip lines (5).
3. micro-band one-to-two power splitter according to claim 1, is characterized in that: in the time of the second microstrip line concave shape bottom reverse extending λ/4, two ends microstrip lines (3), by the second reverse extending λ/4, microstrip line concave shape both sides microstrip line 5).
4. micro-band one-to-two power splitter according to claim 1, is characterized in that: in the time of the second microstrip line concave shape both sides reverse extending λ/4 microstrip lines (5), by the first microstrip line (1) reverse extending λ/4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410111911.1A CN103872418A (en) | 2014-03-25 | 2014-03-25 | Micro-strip one-to-two power divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410111911.1A CN103872418A (en) | 2014-03-25 | 2014-03-25 | Micro-strip one-to-two power divider |
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| Publication Number | Publication Date |
|---|---|
| CN103872418A true CN103872418A (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410111911.1A Pending CN103872418A (en) | 2014-03-25 | 2014-03-25 | Micro-strip one-to-two power divider |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2815333C1 (en) * | 2023-06-09 | 2024-03-13 | Акционерное общество "Научно-производственное предприятие "Пульсар" | Microstrip power divider with extended bandwidth |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4956621A (en) * | 1987-12-08 | 1990-09-11 | Harris Corporation | Three-state, two-output variable RF power divider |
| CN201466214U (en) * | 2009-02-24 | 2010-05-12 | 烟台宏益微波科技有限公司 | Ultrathin flat plate-type circular polarized antenna |
| CN101924265A (en) * | 2010-08-11 | 2010-12-22 | 安徽锦特微波电子有限公司 | Microwave and millimeter wave high-isolation power divider |
| CN201699114U (en) * | 2010-06-23 | 2011-01-05 | 中国科学院微电子研究所 | Microwave double-frequency power divider based on Gysel-type power divider |
-
2014
- 2014-03-25 CN CN201410111911.1A patent/CN103872418A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4956621A (en) * | 1987-12-08 | 1990-09-11 | Harris Corporation | Three-state, two-output variable RF power divider |
| CN201466214U (en) * | 2009-02-24 | 2010-05-12 | 烟台宏益微波科技有限公司 | Ultrathin flat plate-type circular polarized antenna |
| CN201699114U (en) * | 2010-06-23 | 2011-01-05 | 中国科学院微电子研究所 | Microwave double-frequency power divider based on Gysel-type power divider |
| CN101924265A (en) * | 2010-08-11 | 2010-12-22 | 安徽锦特微波电子有限公司 | Microwave and millimeter wave high-isolation power divider |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2815333C1 (en) * | 2023-06-09 | 2024-03-13 | Акционерное общество "Научно-производственное предприятие "Пульсар" | Microstrip power divider with extended bandwidth |
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Application publication date: 20140618 |