CN1588689A - Microwave power distributor made from lumped element left hand transmission line - Google Patents
Microwave power distributor made from lumped element left hand transmission line Download PDFInfo
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- CN1588689A CN1588689A CN 200410052746 CN200410052746A CN1588689A CN 1588689 A CN1588689 A CN 1588689A CN 200410052746 CN200410052746 CN 200410052746 CN 200410052746 A CN200410052746 A CN 200410052746A CN 1588689 A CN1588689 A CN 1588689A
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Abstract
The invention relates to a microwave power distributor produced by left-hand transmission line with lumped element structure. It consists of common microtrip line and left-hand transmission line and has three-line six-port with balanced structure and coupling action. The interval between liens is fixed according design requirement. The left-hand transmission line is produced by using printing circuit board technology to design and make unit interval of pattern structure according with useage requirement on medium copper coated board, to fit paster capacitor and paster inductor in vertical through-hole. By the invention, very wide frequency band that more than 30 percent of center frequency band and power loss is less than 0.5 dB to realize power distribution of two-port bisection, three-port trisection or three-port arbitrary scale.
Description
Technical field
The present invention relates to the microwave power distributor of the very wide three wire configuration of a kind of working band of the left hand microstrip transmission line material of using novel lamped element structure.
Background technology
The full name of microwave power distributor is a microwave power divider, can be widely used in various microwave circuits and the microwave apparatus.At present, for the microwave power distributor of middle low power, mostly be to adopt strip line or microstrip line construction, mainly contain little power divider with three ports.For three port power divider of not having the consumption reciprocity, three ports can not all mate simultaneously, so in order to realize that three ports mate simultaneously, it is designed to nonreciprocal element (as the microwave three-port circulator), perhaps has been designed to consumption element (as the resistive power splitter).But, the design of these two kinds of power splitters must be considered electrical length, promptly after centre frequency is determined, their physical dimension is also just determined, in case and operating frequency off-center frequency, the indexs such as the degree of balance of input vswr, isolation and two-way power output all will significantly become bad, so working band is very narrow.
2002, people such as C.Caloz, T.Itoh proposes to utilize transmission line theory structure left hand medium, imagination utilizes microstrip element (interdigitation electric capacity and spiral type inductance) to make artificial left hand microstrip transmission line (abbreviation left hand transmission line), this medium has negative refractive index, when electromagnetic wave is propagated in this medium, the Maxwell equation is still set up, but the direction of propagation of direction of wave travel and energy is opposite, promptly have negative phase velocity and positive group velocity, and can show some unusual electromagnetic propertys.United States Patent (USP) " to the electromagnetic wave guidance plane specific materials with radiation control " " Planar metamaterials for control ofelectromagnetic wave guidance and radiation " (US2004066251) has been introduced this novel artificial structural material metamaterials (left hand medium), and utilize this metamaterials (left hand medium) with specific performance, make microwave devices such as microwave phase shifter, micro-wave coupler, backward wave radiating antenna.But also metamaterials is not used to make microwave power distributor up to now.
Summary of the invention
The objective of the invention is to disclose a kind of wide frequency band that has, can realize that two ports are halved, three port trisections or three ports are in the power division of the arbitrary proportion of different frequency bands, and input vswr, isolation microwave power distributor of three wire configuration preferably all.
In order to achieve the above object, the discovery that studies for a long period of time of this left hand microstrip transmission line (left hand transmission line) that lamped element is constructed through us, when electromagnetic wave is propagated therein, its transmission characteristic has the moderate insertion loss and the bandwidth of broad, and physical dimension is less, through experiment repeatedly, found the microwave power distributor of following structure.It is by a common microstrip line and two left hand transmission lines, perhaps the microwave power distributor of three-way six ports of being made up of a left hand transmission line and two common microstrip lines with symmetrical structure and coupling.
The requirement of the use occasion that the size conforms in gap is different between the line between above-mentioned common microstrip line and the left hand transmission line.
Above-mentioned left hand transmission line is to adopt printed-board technology design, makes the graphic structure that meets instructions for use in the medium copper-clad plate, distinguishes affixed patch capacitor and chip inductor formation lamped element left hand transmission line between the cell gap (horizontal gap) of graphic structure with in the vertical through hole.
Advantage of the present invention is:
1. because the present invention adopts special left hand transmission line, this microstrip transmission line has in the lower frequency ranges, effective dielectric constant and effective permeability will be negative value simultaneously, the direction of phase velocity and group velocity will be opposite, and to have a phase-shift constant be zero, effective refractive index is the special nature of zero energy gap in other words, and therefore microwave power distributor of the present invention can be realized very wide frequency band, can reach more than 30% of center frequency-band.
2. because the present invention has adopted symmetrical structure, therefore need only and load different electric capacity, inductance value when the property transmission line design is made leftward, just can be easy to realize the adjusting of power division ratio and the adjusting of working band, realize the power division of two-port bisection, three port trisections, three port arbitrary proportions, and input vswr, isolation are all better.Power loss＜0.5dB, frequency range ∽ 40%.
3. because left hand transmission line of the present invention has adopted passive lamped element,, therefore can realize the adjusting of power division ratio and the adjusting of working band at an easy rate, to satisfy various different wave circuits and microwave apparatus needs as patch capacitor and inductance.
4. because the present invention adopts the microstrip coupled power division that realizes of lamped element, so more compact structure, design, make easilier, and have the characteristic that overcomes shortcomings such as existing microwave power distributor working band is very narrow.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is common microstrip line for the centre, and both sides are power splitters of the present invention that left hand transmission line constitutes
Fig. 3 is the middle left hand transmission line that is, both sides are power splitters of the present invention that common microstrip line constitutes
Scattering parameter when Fig. 4 is the output of three ports
Fig. 5 is the scattering parameters of three ports when different frequency bands is exported
Scattering parameter when Fig. 6 is the output of three ports
Label declaration in the accompanying drawing
The common microstrip line of 1-bottom Copper Foil 2-medium 3-left hand microstrip line 4-
Gap 8-cell gap between 5-chip inductor 6-patch capacitor 7-line
The 9-MSN joint
Embodiment
Microwave power divider of the present invention has two kinds of structures.A kind of is that the centre is a common microstrip line 4, and both sides are two left hand transmission lines 3, form symmetric form; Another kind is made up of a left hand transmission line in the middle of being positioned at 3 and two common microstrip lines 4 that are positioned at both sides.The size in gap 7 should meet the requirement of different use occasions between the line between common microstrip line 4 of while and the left hand transmission line 3.Left hand transmission line 3 of the present invention can simply be interpreted as between the horizontal gap of this microstrip line and vertical through hole in, loaded the form of patch capacitor 6 with the chip inductor 5 of parallel connection of series connection: specifically be on the top layer Copper Foil of medium copper-clad plate, to be designed to the vertical through hole that has cell gap 8 (horizontal gap) and connect top layer Copper Foil and bottom Copper Foil 1 by setting requirement, affixed with patch capacitor 6 and chip inductor 5 respectively by scolding tin, it is connected as a single entity.In six ports that form, mid line one end is an input port, and the other end is a straight-through port; Two ports up and down of input port the same side are coupling port, and the both sides up and down of straight-through port are isolated port.See also Fig. 1.Port A is an input port, and port B is a straight-through port, and port C and port E are coupling port, and port D and port F are isolated port.
Embodiment 1
See also Fig. 2.The present invention is by middle common microstrip line 4, and both sides are that the symmetrical structure form of left hand transmission line 3 constitutes.The medium copper-clad plate is made up of top layer Copper Foil, medium 2 and bottom Copper Foil 1, at first, carves a common microstrip line 4 at top layer Copper Foil middle part.Both sides scribe two left hand transmission lines 3 at common microstrip line about in the of 4.The width of every line is 2.945 millimeters, and coupling length is 30 millimeters, and gap 7 is 0.2 millimeter between the line between three lines.Then, the microstrip line length that is designed between electric capacity by the setting requirement on two left hand transmission lines 3 is 5 millimeters (comprising that cell gap 8 is 0.762 millimeter slit), and the patch capacitor 6 of loading is 2.0 pico farads, and chip inductor 5 is 3.9 nanohenrys.The affixed MSN joint 9 in per three port tops in both sides at last.A, C, E and B, D, the F that forms can realize port A input, exports at branches such as 2.1～2.75GHz scope inner port B, C, E.Promptly in six ports, port A is an input port, and port B is a straight-through port, and port C and E are coupling port, and port D and F are isolated port.This power splitter can be realized the trisection output of B, C, three ports of E in 2.1～2.75GHz scope as can be seen from Fig. 4.
In addition, changing the electric capacity, the inductance that load in Fig. 2 structure is 1.0 pico farads for loading capacitance in a left hand transmission line, and inductance is 1.8 nanohenrys, another middle loading capacitance is 5.0 pico farads, inductance is 8.2 nanohenrys, and coupling length is 100 millimeters, and other parameters are with example 1.Then can realize port A input, three port B, C, E export on 1.9～2.5Ghz, 1.2～1.7GHz, 2.6～3.7GHz frequency band respectively.The B of this power splitter, C, E port are exported on above-mentioned different frequency bands respectively as can be seen from Fig. 5.
Operation principle: according to the transmission line principle, in microstrip transmission line, load inductor-capacitor (L-C) element of lump, with the capacitances in series that loads, the inductance parallel connection that loads, constitute the left hand microstrip transmission line, this material has special transmission characteristic to electromagnetic wave, in lower frequency ranges, effective dielectric constant and effective permeability are negative value simultaneously, and the direction of phase velocity and group velocity will be opposite; And to have a phase-shift constant be zero, and effective refractive index is zero energy gap in other words.Because the coupling between left hand microstrip transmission line and the common microstrip line is that property microstrip transmission line phase-shift constant is to be coupled in zero the energy gap leftward, and this power splitter has symmetrical structure, so can realize that two ports are halved, the power division of three port trisections.If about load different electric capacity, inductance value in two left hand transmission lines, can be implemented in the power division of three port arbitrary proportions of different frequency bands.
Design principle: in the working range of 0.5GHz ~ 3GHz,, choose different electric capacity and inductance element, design the microwave power distributor that meets instructions for use according to mutual inductance value and the coupling capacitance between the microstrip line.
The scope of application: can be applicable in the various microwave circuits and microwave apparatus in the 3GHz scope.
Claims (3)
1. use the microwave power distributor of lamped element left hand transmission line making, it is characterized in that: it is by a common microstrip line (4) and two left hand transmission lines (3), perhaps the microwave power distributor of three-way six ports of being made up of a left hand transmission line (3) and two common microstrip lines (4) with symmetrical structure and coupling.
2. the microwave power distributor of making of the lamped element left hand transmission line according to claim 1, it is characterized in that: the size in gap (7) is set by the requirement of different use occasions between the line between above-mentioned common microstrip line (4) and the left hand transmission line (3).
3. the microwave power distributor of making of the lamped element left hand transmission line according to claim 1, it is characterized in that: above-mentioned left hand transmission line (3) is to adopt printed-board technology design, make the graphic structure that meets instructions for use in the medium copper-clad plate, distinguishes affixed patch capacitor (6) and chip inductor (5) between the cell gap (8) of graphic structure with in the vertical through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100527463A CN100459281C (en) | 2004-07-12 | 2004-07-12 | Microwave power distributor made from lumped element left hand transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100527463A CN100459281C (en) | 2004-07-12 | 2004-07-12 | Microwave power distributor made from lumped element left hand transmission line |
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| Publication Number | Publication Date |
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| CN1588689A true CN1588689A (en) | 2005-03-02 |
| CN100459281C CN100459281C (en) | 2009-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100527463A Expired - Fee Related CN100459281C (en) | 2004-07-12 | 2004-07-12 | Microwave power distributor made from lumped element left hand transmission line |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100546097C (en) * | 2006-05-31 | 2009-09-30 | 中国科学院电子学研究所 | Based on arbitrary dual-frequency power divider of composite right/left-handed transmission line and preparation method thereof |
| CN102163605A (en) * | 2010-12-28 | 2011-08-24 | 四川龙瑞微电子有限公司 | Microstrip network of microwave integrated circuit |
| CN102422487A (en) * | 2009-03-12 | 2012-04-18 | 雷斯潘公司 | Multiband composite right and left handed (CRLH) slot antenna |
| CN102522618A (en) * | 2011-12-29 | 2012-06-27 | 北京理工大学 | Active left-handed transmission line formed by lumped element and diode |
| CN104202033A (en) * | 2014-09-17 | 2014-12-10 | 王少夫 | Distributive correlator |
| CN107146937A (en) * | 2017-03-28 | 2017-09-08 | 许昌学院 | A kind of list based on microstrip line bears Meta Materials hetero-junctions |
| CN110416679A (en) * | 2019-07-30 | 2019-11-05 | 湖南赛博诺格电子科技有限公司 | Microwave circuit structure and its wiring method |
| CN115189112A (en) * | 2022-07-08 | 2022-10-14 | 郑州轻工业大学 | Bisection type six-wire-three-port magnetic electric power divider and measuring device thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5662816A (en) * | 1995-12-04 | 1997-09-02 | Lucent Technologies Inc. | Signal isolating microwave splitters/combiners |
| US6483397B2 (en) * | 2000-11-27 | 2002-11-19 | Raytheon Company | Tandem six port 3:1 divider combiner |
| US6593833B2 (en) * | 2001-04-04 | 2003-07-15 | Mcnc | Tunable microwave components utilizing ferroelectric and ferromagnetic composite dielectrics and methods for making same |
| US6859114B2 (en) * | 2002-05-31 | 2005-02-22 | George V. Eleftheriades | Metamaterials for controlling and guiding electromagnetic radiation and applications therefor |
-
2004
- 2004-07-12 CN CNB2004100527463A patent/CN100459281C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100546097C (en) * | 2006-05-31 | 2009-09-30 | 中国科学院电子学研究所 | Based on arbitrary dual-frequency power divider of composite right/left-handed transmission line and preparation method thereof |
| CN105226396A (en) * | 2009-03-12 | 2016-01-06 | 泰科电子服务股份有限公司 | The multi-band compound right hand and left hand (CRLH) slot antenna |
| CN102422487A (en) * | 2009-03-12 | 2012-04-18 | 雷斯潘公司 | Multiband composite right and left handed (CRLH) slot antenna |
| CN105226396B (en) * | 2009-03-12 | 2019-04-12 | 泰科电子服务股份有限公司 | Mostly with the compound right hand and left hand (CRLH) slot antenna |
| US9246228B2 (en) | 2009-03-12 | 2016-01-26 | Tyco Electronics Services Gmbh | Multiband composite right and left handed (CRLH) slot antenna |
| CN102422487B (en) * | 2009-03-12 | 2015-09-16 | 泰科电子服务股份有限公司 | The multi-band compound right hand and left hand (CRLH) slot antenna |
| CN102163605A (en) * | 2010-12-28 | 2011-08-24 | 四川龙瑞微电子有限公司 | Microstrip network of microwave integrated circuit |
| CN102163605B (en) * | 2010-12-28 | 2013-03-20 | 四川龙瑞微电子有限公司 | Microstrip network of microwave integrated circuit |
| CN102522618A (en) * | 2011-12-29 | 2012-06-27 | 北京理工大学 | Active left-handed transmission line formed by lumped element and diode |
| CN102522618B (en) * | 2011-12-29 | 2014-07-23 | 北京理工大学 | Active left-handed transmission line formed by lumped element and diode |
| CN104202033A (en) * | 2014-09-17 | 2014-12-10 | 王少夫 | Distributive correlator |
| CN107146937A (en) * | 2017-03-28 | 2017-09-08 | 许昌学院 | A kind of list based on microstrip line bears Meta Materials hetero-junctions |
| CN110416679A (en) * | 2019-07-30 | 2019-11-05 | 湖南赛博诺格电子科技有限公司 | Microwave circuit structure and its wiring method |
| CN115189112A (en) * | 2022-07-08 | 2022-10-14 | 郑州轻工业大学 | Bisection type six-wire-three-port magnetic electric power divider and measuring device thereof |
| CN115189112B (en) * | 2022-07-08 | 2024-05-14 | 郑州轻工业大学 | Bipartition six-line-three-port magneto-electric power divider and measuring device thereof |
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| Publication number | Publication date |
|---|---|
| CN100459281C (en) | 2009-02-04 |
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Granted publication date: 20090204 Termination date: 20110712 |