CN104836005A - Miniaturized coaxial cavity power splitter - Google Patents
Miniaturized coaxial cavity power splitter Download PDFInfo
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- CN104836005A CN104836005A CN201510251204.7A CN201510251204A CN104836005A CN 104836005 A CN104836005 A CN 104836005A CN 201510251204 A CN201510251204 A CN 201510251204A CN 104836005 A CN104836005 A CN 104836005A
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Abstract
The present invention discloses a miniaturized coaxial cavity splitter which is characterized in that the miniaturized coaxial cavity power splitter comprises an outer conductor, a coaxial inner conductor arranged in the outer conductor, an input end coaxial connector which is connected to the inner conductor, and at least two output end coaxial connectors, along the axial direction of the inner conductor and the outer conductor, the inner conductor or the outer conductor is orderly divided into multiple levels of impedance conversion sections, the multiple levels of impedance conversion sections are orderly arranged along the input to output direction of the inner conductor, when the inner diameter of the outer conductor is not changed, the diameter of the inner conductor is alternately changed in large and small sizes, the multiple levels of impedance conversion sections are orderly arranged along the input to output direction of the inner conductor, and when the diameter of the inner conductor is not changed, the diameter of the outer conductor is alternately changed in small and large sizes. According to the power splitter, the length of the impedance conversion sections is much smaller than that of a multi-level quarter-wavelength impedance conversion section, the commonality of parts can be improved, the production cost is reduced, and the installation and debugging are convenient.
Description
Technical field
The present invention relates to cellular mobile communication field, particularly a kind of coaxial cavity power divider.
Background technology
Coaxial cavity power divider is a kind of common radio frequency passive device, and its function Shi Ba mono-road input radio frequency signal is divided into two-way or multiple-channel output radiofrequency signal, is mainly used in cellular mobile telecommunications outdoor base station and indoor distribution covering system.Because base station transmitting power is usually comparatively large, and chamber power divider has high power capacity, low-loss and broadband character, is thus widely used in mobile communication system.At present, the broadband system that mobile communication is made up of different systems, different frequency range, traditional chamber power divider will realize broadband and cover, then need to be made up of the cascade of multistage quarter-wave stepped impedance transformer.Usually, realize full frequency band 800MHz-2500MHz and cover, multistage quarter-wave chamber power divider needs level Four cascade, and length is generally at about 200mm; 698MHz-2700MHz chamber power divider then needs Pyatyi cascade, and length is at about 230mm.
Summary of the invention
A kind of structure that object of the present invention is exactly deficiency in order to solve prior art and provides is simple, and length is shorter, lighter in weight, and design margin is large, the miniaturized coaxial cavity body power splitter that rate of finished products is high.
The present invention adopts following technical solution to realize above-mentioned purpose: a kind of miniaturized coaxial cavity body power splitter, it is characterized in that, it comprises outer conductor, be arranged on outer conductor in and the inner wire coaxial with outer conductor, the input coaxial connector be connected with inner wire and at least two output coaxial connectors;
Along the axial direction of inner and outer conductor, inner wire or outer conductor are divided into some grades of transformer sections successively;
Input to transformer sections at different levels that outbound course sets gradually when outer conductor internal diameter is constant along inner wire, the diameter of inner wire is by the alternately change of small one and large one rule;
And/or inputing to transformer sections at different levels that outbound course sets gradually when inner wire diameter is constant along inner wire, the internal diameter of outer conductor is by the alternately change of one little one large rule.
Further illustrating as such scheme, described input coaxial connector and output coaxial connector are divided into the two ends of outer conductor, and input coaxial connector connects the input of inner wire, and output coaxial connector connects the output of inner wire.
In described some grades of transformer sections, the length of every one-level is all much smaller than quarter-wave, and the length of every one-level both can be identical, also can be different.
Preferably, described transformer section, under the constant condition of outer conductor internal diameter, by alternately changing adjacent two-stage inner wire diameter, forms the high low-impedance line type impedance transformer that some levels have low-pass characteristic.
Preferably, described transformer section, under the constant condition of inner wire diameter, by alternately changing adjacent two-stage outer conductor internal diameter, forms the high low-impedance line type impedance transformer that some levels have low-pass characteristic.
Preferably, described transformer section, by alternately changing adjacent two-stage inner wire diameter and outer conductor internal diameter, forms the high low-impedance line type impedance transformer that some levels have low-pass characteristic.
The beneficial effect that the present invention adopts above-mentioned technical solution to reach is:
1, the present invention adopts the bandwidth according to required coaxial cavity power divider, preset the length of coaxial inner conductor progression and every one-level, then diameter at different levels is adjusted, thus optimize the impedance of low pass filter every one-level, its broad passband not only having met filter is required but also the resistance value meeting input and output has specified impedance to change the requirement of ratio; Because the length of the every one-level of low pass filter can be significantly smaller than quarter-wave, therefore under the condition that outer conductor internal diameter is identical, the impedance transformer length with low-frequency filter characteristics can than conventional multistage quarter wavelength impedance transducer design much shorter, known to test, total length shortens 20% ~ 30% than conventional design; Not only length is shorter, lighter in weight, and because its progression is more, design margin large, therefore rate of finished products is high.
2, the present invention can the length of control group transforming section, makes that two merits divide chamber power divider, three merits divide chamber power divider and four merits to divide the cavity length of chamber power divider identical, can improve the versatility of part, thus reduce production cost.
Accompanying drawing explanation
Fig. 1 is the inner conductor structure schematic diagram that 698MHz-2700MHz bis-merit of the present invention divides coaxial cavity power divider;
Fig. 2 is the assembly drawing that 698MHz-2700MHz bis-merit of the present invention coaxially divides chamber power divider;
Fig. 3 is the inner conductor structure schematic diagram that 698MHz-2700MHz tri-merit of the present invention divides coaxial cavity power divider;
Fig. 4 is the assembly drawing that 698MHz-2700MHz tri-merit of the present invention divides coaxial cavity power divider;
Fig. 5 is the inner conductor structure schematic diagram that 698MHz-2700MHz tetra-merit of the present invention divides coaxial cavity power divider;
Fig. 6 is the assembly drawing that 698MHz-2700MHz tetra-merit of the present invention divides coaxial cavity power divider.
Description of reference numerals: 1, outer conductor 2, inner wire 3, input coaxial connector 4, output coaxial connector 5, output coaxial connector 6, output coaxial connector 7, output coaxial connector.
Embodiment
The present invention is a kind of miniaturized coaxial cavity body power splitter, and it comprises outer conductor 1, is arranged in outer conductor 1 and the inner wire 2 coaxial with outer conductor, the input coaxial connector 3 be connected with inner wire and at least two output coaxial connectors; Along the axial direction of inner and outer conductor, inner wire or outer conductor are divided into some grades of transformer sections successively; Transformer sections at different levels that outbound course sets gradually are inputed to when outer conductor internal diameter is constant along inner wire, the diameter of inner wire is by the alternately change of small one and large one rule, and/or inputing to transformer sections at different levels that outbound course sets gradually when inner wire diameter is constant along inner wire, the internal diameter of outer conductor is by the alternately change of one little one large rule.
Input coaxial connector and output coaxial connector are divided into the two ends of outer conductor, and input coaxial connector connects the input of inner wire, and output coaxial connector connects the output of inner wire.In some grades of transformer sections, the length of every one-level is all less than quarter-wave, and the length of every one-level both can be identical, also can be different.
Two merits below by way of a 698MHz-2700MHz divide coaxial cavity power divider, three merits divide coaxial cavity power divider, four merits divide the execution mode of coaxial cavity power divider three specific embodiments to this patent to be described further.
Embodiment 1
As shown in Figure 1, Fig. 1 is the inner conductor structure schematic diagram that two merits divide coaxial cavity power divider.Two merits divide inner wire transformer section to have 10 grades.For the ease of design, we are set to the length of every one-level equal, are 12.9mm.From the input of inner wire to output by the alternately change of every grade of small one and large one rule of diameter.From input, every grade of diameter is followed successively by 7.8mm, 3.8mm, 9.6mm, 3.7mm, 10.3mm, 3.9mm, 10.7mm, 5.1mm, 10.3mm, 8mm.Fig. 2 is the assembly drawing that two merits divide coaxial cavity power divider, comprises outer conductor 1, inner wire 2, input coaxial connector 3 and two output coaxial connectors 4 and 5.Inner wire 2, by the unsettled inside cavity being fixed on outer conductor 1 of described three coaxial connectors, forms coaxial configuration.Signal is inputted by coaxial connector 3, then divides output in merits such as two output coaxial connectors 4 and 5.Actual measurement model machine standing wave VSWR≤1.2, Insertion Loss IR≤3.3dB, third order intermodulation PIM3≤-150dBc.
Embodiment 2
Fig. 3 is the inner conductor structure schematic diagram that three merits divide coaxial cavity power divider, and its transformer section has 12 grades, and every level length is 12.8mm, from the input of inner wire to output by the alternately change of every grade of small one and large one rule of diameter.From input, every grade of diameter is 7.8mm, 3.9mm, 9.8mm, 3.5mm, 10.7mm, 4.3mm, 11.3mm, 5.4mm, 11.6mm, 6.9mm, 11.5mm, 9.2mm.Fig. 4 is the assembly drawing that three merits divide coaxial cavity power divider, comprises outer conductor 1, inner wire 2, input coaxial connector 3 and three output coaxial connectors 4,5,6.Unsettled to be fixed on cavity 1 inner by three coaxial connectors for inner wire 2, forms coaxial configuration.Signal is inputted by coaxial connector 3, then in point outputs such as three output ports 4,5,6.Actual measurement model machine standing wave VSWR≤1.2, Insertion Loss IR≤5.1dB, third order intermodulation PIM3≤-150dBc.
Embodiment 3
Fig. 5 is the inner conductor structure schematic diagram that four merits divide chamber power divider, and its transformer section has 12 grades, and every level length is 12.8mm, from the input of inner wire to output by the alternately change of every grade of small one and large one rule of diameter.From input, every grade of diameter is 7.8mm, 4mm, 9.9mm, 3.8mm, 10.9mm, 4.8mm, 11.6mm, 6.1mm, 12mm, 7.8mm, 12mm, 10.3mm.Figure six is the assembly drawing that four merits divide coaxial cavity power divider, comprises outer conductor 1, inner wire 2, input coaxial connector 3 and four output coaxial connectors 4,5,6,7.Unsettled to be fixed on cavity 1 inner by four coaxial connectors for inner wire 2, forms coaxial configuration.Signal is inputted by coaxial connector 3, then in point outputs such as four output ports 4,5,6,7.Actual measurement model machine standing wave VSWR≤1.2, Insertion Loss IR≤6.4dB, third order intermodulation PIM3≤-150dBc.
The present invention adopts the operating frequency of this Technology design to be that two merits of 698MHz-2700MHz divide coaxial cavity power divider length can be as short as 150mm (not containing joint), and the former design length of this product is 200mm, and size reduces 25%; Operating frequency is that three merits of 698MHz-2700MHz divide chamber power divider and four merits to divide chamber power divider length can be as short as 175mm (not containing joint), and the former design length of this product is 230mm, and size reduces 24%.Sample actual measurement standing wave VSWR is all less than 1.20, and three rank passive intermodulation PIM3 are less than-150dBc, and power capacity is greater than 300W.Contraction in length is level about production cost not only, also facilitates Installation and Debugging.Therefore, can be widely used in radio communication and broadcast system.
The present invention adopts the principle of low pass filter design, according to the bandwidth of required coaxial cavity power divider, preset the length of coaxial inner conductor progression and every one-level, then diameter at different levels is adjusted, thus optimize the impedance of the every one-level of low pass filter, its broad passband not only having met filter is required but also the resistance value meeting input and output has specified impedance to change the requirement of ratio, the diameter at different levels of the inner wire as embodiment 1-embodiment 3 is all through strict design.Because the length of the every one-level of low pass filter can be significantly smaller than quarter-wave, therefore, under the condition that coaxial outer conductor internal diameter is identical, the impedance transformer length with low-frequency filter characteristics can than conventional multistage quarter wavelength impedance transducer design much shorter.But in actual applications, due to the restriction considering that high impedance line inner wire diameter can not be too thin, the impedance transformer length usually with low-frequency filter characteristics is shorter than conventional products by about 25%.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, and without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (6)
1. a miniaturized coaxial cavity body power splitter, is characterized in that, it comprises outer conductor, be arranged on outer conductor in and the inner wire coaxial with outer conductor, the input coaxial connector be connected with inner wire and at least two output coaxial connectors;
Input to transformer sections at different levels that outbound course sets gradually when outer conductor internal diameter is constant along inner wire, the diameter of inner wire is by the alternately change of small one and large one rule;
And/or inputing to transformer sections at different levels that outbound course sets gradually when inner wire diameter is constant along inner wire, the internal diameter of outer conductor is by the alternately change of one little one large rule.
2. a kind of miniaturized coaxial cavity body power splitter according to claim 1, it is characterized in that, described input coaxial connector and output coaxial connector are divided into the two ends of outer conductor, input coaxial connector connects the input of inner wire, and output coaxial connector connects the output of inner wire.
3. a kind of miniaturized coaxial cavity body power splitter according to claim 1, it is characterized in that, in described some grades of transformer sections, the length of every one-level is all less than quarter-wave.
4. a kind of miniaturized coaxial cavity body power splitter according to claim 1, it is characterized in that, described transformer section, under the constant condition of outer conductor diameter, by alternately changing adjacent two-stage inner wire diameter, forms the high low-impedance line type impedance transformer that some levels have low-pass characteristic.
5. a kind of miniaturized coaxial cavity body power splitter according to claim 1, it is characterized in that, described transformer section, under the constant condition of inner wire diameter, by alternately changing adjacent two-stage outer conductor internal diameter, forms the high low-impedance line type impedance transformer that some levels have low-pass characteristic.
6. a kind of miniaturized coaxial cavity body power splitter according to claim 1, is characterized in that, described transformer section, by alternately changing adjacent two-stage inner wire diameter and outer conductor internal diameter, forms the high low-impedance line type impedance transformer that N level has low-pass characteristic.
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| CN201510251204.7A CN104836005A (en) | 2015-05-15 | 2015-05-15 | Miniaturized coaxial cavity power splitter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365317A (en) * | 2018-05-16 | 2018-08-03 | 广东圣大电子有限公司 | A kind of ultra wide band multi-channel microwave power synthesizer |
| CN109004323A (en) * | 2018-07-26 | 2018-12-14 | 深圳市鸿图骏达科技有限公司 | A kind of power splitter |
| CN109346810A (en) * | 2018-09-28 | 2019-02-15 | 安徽蓝麦通信股份有限公司 | A kind of 1/6th wavelength of 5G ultra wide band miniaturization power splitter design method |
| CN110416842A (en) * | 2019-08-09 | 2019-11-05 | 江苏正恺电子科技有限公司 | A kind of coaxial cavity structure meeting the short physical length of long electrical length |
| CN116231259A (en) * | 2023-05-09 | 2023-06-06 | 中国科学院合肥物质科学研究院 | Coaxial impedance converter for reducing transmission line voltage and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030112101A1 (en) * | 2001-12-18 | 2003-06-19 | Kikuo Tsunoda | Low-pass filter |
| CN101098032A (en) * | 2007-07-09 | 2008-01-02 | 南京广顺网络通信设备有限公司 | Cavity type power divider |
| CN201360032Y (en) * | 2009-03-09 | 2009-12-09 | 安徽海特微波通信有限公司 | A short-stair coaxial power divider of impedance variable cavity |
-
2015
- 2015-05-15 CN CN201510251204.7A patent/CN104836005A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030112101A1 (en) * | 2001-12-18 | 2003-06-19 | Kikuo Tsunoda | Low-pass filter |
| CN101098032A (en) * | 2007-07-09 | 2008-01-02 | 南京广顺网络通信设备有限公司 | Cavity type power divider |
| CN201360032Y (en) * | 2009-03-09 | 2009-12-09 | 安徽海特微波通信有限公司 | A short-stair coaxial power divider of impedance variable cavity |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365317A (en) * | 2018-05-16 | 2018-08-03 | 广东圣大电子有限公司 | A kind of ultra wide band multi-channel microwave power synthesizer |
| CN108365317B (en) * | 2018-05-16 | 2023-10-03 | 广东圣大电子有限公司 | Ultra-wideband multipath microwave power synthesizer |
| CN109004323A (en) * | 2018-07-26 | 2018-12-14 | 深圳市鸿图骏达科技有限公司 | A kind of power splitter |
| CN109346810A (en) * | 2018-09-28 | 2019-02-15 | 安徽蓝麦通信股份有限公司 | A kind of 1/6th wavelength of 5G ultra wide band miniaturization power splitter design method |
| CN110416842A (en) * | 2019-08-09 | 2019-11-05 | 江苏正恺电子科技有限公司 | A kind of coaxial cavity structure meeting the short physical length of long electrical length |
| CN116231259A (en) * | 2023-05-09 | 2023-06-06 | 中国科学院合肥物质科学研究院 | Coaxial impedance converter for reducing transmission line voltage and preparation method thereof |
| CN116231259B (en) * | 2023-05-09 | 2023-06-30 | 中国科学院合肥物质科学研究院 | Coaxial impedance converter for reducing transmission line voltage and preparation method thereof |
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Application publication date: 20150812 |
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