CN204167456U - Ultra wideband power divider - Google Patents
Ultra wideband power divider Download PDFInfo
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- CN204167456U CN204167456U CN201420675715.2U CN201420675715U CN204167456U CN 204167456 U CN204167456 U CN 204167456U CN 201420675715 U CN201420675715 U CN 201420675715U CN 204167456 U CN204167456 U CN 204167456U
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Abstract
The utility model discloses a kind of ultra wideband power divider, it is characterized in that: comprising: printed board (1), isolation resistance (2), housing (3), cover plate, joint (4) and more piece 1/4 wavelength impedance transformers (5); The inner chamber that described housing (3) milling becomes and cover plate for sealing composition cavity, described cavity internal fixtion has described printed board (1), described printed board (1) is provided with the microstrip circuit be made up of described isolation resistance (2) and more piece 1/4 wavelength impedance transformers (5), described joint (4) comprises input adapter (6) and out splice going splice (7), the input of described microstrip circuit is provided with described input adapter (6), and the output of described microstrip circuit is provided with some described out splice going splices (7).A kind of ultra wideband power divider that the utility model provides, the wide covering of full frequency band, miniaturization, good performance indexes, reasonable in design, cost are low.
Description
Technical field
The utility model relates to a kind of ultra wideband power divider, particularly relates to a kind of Wilkinson type ultra wideband power divider, belongs to the technical fields such as radar, aircraft, guided missile, electronic countermeasures and microwave measurement.
Background technology
1-18GHz/2-18GHz broadband power divider is the critical component of the microwave equipment such as phased array radar, multichannel trunking traffic machine, being widely used in radar, aircraft, naval vessels, guided missile, satellite, electronic countermeasures and microwave measurement field, is indispensable critical component in airborne radar, ground radar, electronic countermeasures and early warning system.Along with the development of military equipment, high-end to frequency, especially in 1-18GHz broadband, the application of highly reliable microwave power distributor is also more and more wider, and demand rapidly increases.Particularly in Modern Microwave Measurement and electronic warfare system, for improving adaptability and the multi signal capturing ability of equipment, often selecting broadband system to be used as system schema, now power splitter being proposed to the requirement of the wide covering of full frequency band.Meet the broadband power divider of system performance requirements to improve the progress of self-ability to provide the auxiliary items and adaptation complete machine by applying new design, keeping the technology synchronized development of same same kind of products at abroad, is the inexorable trend of power splitter development.
Also it is pointed out that the development along with microwave technology, more and more higher requirement be it is also proposed to the Miniaturization Design of broadband power divider, and modern microwave technology is also towards the trend development of mass production.The utility model is theoretical and carried out the exploration of novelty based on power splitter, designs the miniaturized power splitter of ultra broadband in applicable modern microwave field.
Utility model content
Technical problem to be solved in the utility model is, provides the ultra wideband power divider of the wide covering of a kind of high-performance, full frequency band; Further, it is little that the utility model also has volume, the feature that longitudinal size is little.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of ultra wideband power divider, is characterized in that: comprising: printed board, isolation resistance, housing, cover plate, joint and more piece 1/4 wavelength impedance transformers; The inner chamber that described housing milling becomes and cover plate for sealing composition cavity, described cavity internal fixtion has described printed board, described printed board is provided with the microstrip circuit be made up of described isolation resistance and more piece 1/4 wavelength impedance transformers, described joint comprises input adapter and out splice going splice, the input of described microstrip circuit is provided with described input adapter, the output of described microstrip circuit is provided with some described out splice going splices, and the corner of output 50 ohm microstrip is provided with corner cut.
2-18GHz/1-18GHz wave band can be covered to make power splitter bandwidth of operation, have employed more piece impedance transformation structure, the i.e. setting of multistage micro-band conversion joint and multiple isolation resistance, realize two/tetra-tunnel merits by one-to-two, the simple form of two point four to divide, such design effectively can ensure the consistency of each road amplitude and phase place.
Printed board selects dielectric constant low and on-deformable medium substrate, ensures that the wide size of microstrip line is suitable like this, and the electrical property caused to reduce error declines.Joint pin and soldering of printed boards face should ensure as far as possible in one plane (error is within 0.05mm), avoid excessive gap on the impact of power splitter standing wave and Insertion Loss index.
Described 1/4 wavelength impedance transformers is circular arc, and some described 1/4 wavelength impedance transformers are by the arrangement of more piece 1/4 wavelength impedance transformers cascade connection type.
1/4 wavelength impedance transformers circular arc replaces straight line to reduce the longitudinal size of power splitter, and drastically increase the flexibility of power splitter design, its standing wave index is also very good simultaneously, achieves the Miniaturization Design of power splitter.
The vertical equity cross sectional shape of described cavity is identical with the more piece impedance transformer cascade shape of described 1/4 wavelength impedance transformers, and 1/4 wavelength impedance transformers described in more piece to be centrosymmetric arrangement along described cavity longitudinal centre line.
The vertical equity cross sectional shape of described cavity is identical with the shape that described 1/4 wavelength impedance transformers more piece cascade is formed.
The design principle of described cavity is the decline of the power splitter performance index that the design as far as possible reducing housing causes.Therefore consider that the version of inside cavity should ensure with whole microstrip circuit shape tendency in design similar, the distance that cavity boundary wall is identical with the spacing basic guarantee of power splitter every one-level 1/4 wavelength impedance transformers simultaneously.Namely ensure electromagnetic wave when propagating in the paths can not because of the cutting off of cavity, stop, the shape such as sudden change causes electromagnetic wave to occur multipath tolerant and diffraction, especially avoid occurring resonance problems, cause power splitter performance index to decline.According to waveguide resonant cavity theory, when the transverse direction of resonant cavity or longitudinal size equal the odd-multiple of half-wavelength corresponding to a certain frequency just, cavity resonant will occur.
In addition, the seal of strict guarantee inner chamber answered by the cover plate of power splitter, the leakage of anti-stop signal.
Described isolation resistance comprises high-frequency film resistance.
Isolation resistance is the Primary Component of microwave power distributor, and its effect provides good output port coupling and isolation.Using maximum in RF/Microwave electronic circuit is film patch resistance, in radio frequency applications, the equivalent electric circuit more complicated of resistance, not only there is resistance, also have lead-in inductance and parasitic capacitance, its character is no longer pure resistance, but in impedance operator, the characteristic that resistor will present with frequency change on high frequency.Because internal parasitic capacitances, inductance and wiring parasitic capacitance inductive effect can cause the high-end isolation of frequency significantly to decline.Therefore conventional, electric-resistance cannot meet performance index, therefore adopt high-frequency film resistance, and namely in the scope of 1-18GHz, Approximate Equivalent is a pure resistance.The technique of simultaneously welding is it should be noted that reduce the accumulating amount of the weld solder of resistive surface electrode and microstrip line, to reduce the impact of parasitic parameter as far as possible.For ensureing the consistency of resistance welded position, need to arrange weld labeling position line, to meet pinpoint requirement as far as possible.Circular arc type broadband power divider multi-stage cascade, the impact of welding gap size on high-end standing wave at every grade of welding kesistance place is obvious, can be optimized by the Sizes adjustment gap size of isolation resistance and obtain the better power splitter of performance, especially the welding gap of afterbody is slightly larger, effectively can improve the standing wave of high band.
On described input adapter and the equal opening of out splice going splice and described housing, the joint fuse of described input and output joint directly welds with described microstrip circuit input and output side 50 ohm microstrip surface, wait the number of the described out splice going splice of somatotype power splitter be 2 integer power times.。
Described isolation resistance and described 1/4 wavelength impedance transformers often save output weld and are provided with weld labeling position line.
Isolation resistance is provided with between adjacent described 1/4 wavelength impedance transformers.
Described 1/4 wavelength impedance transformers comprises the superposed microstrip line connecting adjacent isolation resistance and the microstrip line being positioned at bottom.
In material object actual measurement process, export the deterioration that 50 ohm line (i.e. the output of described microstrip circuit) can cause power splitter standing wave index around the corner usually, need to cut in corresponding position, to improve standing wave.
A kind of ultra wideband power divider that the utility model provides, microstrip line adopts the setting of more piece 1/4 wavelength impedance transformers cascade, achieves the wide covering of full frequency band of power splitter; The vertical equity cross sectional shape of corner cut, circular arc 1/4 wavelength impedance transformers, cavity is identical with the shape that 1/4 wavelength impedance transformers cascade is formed, more piece impedance transformer is that neutral symmetric form is arranged and the setting of high-frequency film resistance achieves the high-performance of power splitter; The setting of circular arc 1/4 wavelength impedance transformers also achieves the miniaturization of power splitter.A kind of ultra wideband power divider that the utility model provides, the wide covering of full frequency band, miniaturization, good performance indexes, reasonable in design, cost be low, be convenient to batch production.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model 2-18GHz bis-road power splitter;
Fig. 2 is the structural representation of the utility model 2-18GHz tetra-road power splitter;
Fig. 3 is the structural representation of the utility model 1-18GHz bis-road power splitter.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figures 1 to 3, a kind of ultra wideband power divider, is characterized in that: comprising: printed board 1, isolation resistance 2, housing 3, cover plate, joint 4 and more piece 1/4 wavelength impedance transformers 5; The inner chamber that described housing 3 milling becomes and cover plate for sealing composition cavity, described cavity internal fixtion has described printed board 1, described printed board 1 is provided with the microstrip circuit be made up of described isolation resistance 2 and more piece 1/4 wavelength impedance transformers 5, described joint 4 comprises input adapter 6 and out splice going splice 7, the input of described microstrip circuit is provided with described input adapter 6, the output of described microstrip circuit is provided with some described out splice going splices 7, and output 50 ohm microstrip corner is provided with corner cut 8.
Described microstrip circuit is saved by some microstrip type impedance transformations and forms, and microstrip type impedance transformation joint 5 comprises 1/4 wavelength circular arc impedance transformation line and often saves the isolation resistance terminal of output, and 1/4 wavelength impedance transformation line forms a class semicircle relatively.
Described 1/4 wavelength impedance transformers 5 is circular arc, and more piece 1/4 wavelength impedance transformers 5 presses cascade connection type arrangement.
The longitudinal cross-section shape of described cavity is identical with the more piece impedance transformer cascade shape of described microstrip circuit, and described microstrip circuit to be centrosymmetric arrangement along described cavity longitudinal centre line.
Described isolation resistance 2 is high-frequency film resistance.
Described input adapter 6 and out splice going splice 7 are all on opening and described housing 3, the joint fuse of described out splice going splice 7 directly welds with described microstrip circuit output 50 ohm microstrip surface, divide Deng somatotype the number of the described out splice going splice 7 of device be the integer power of 2 doubly, the number of described out splice going splice 7 is 2 or 4 or 8.
Described isolation resistance 2 often saves output weld with described 1/4 wavelength impedance transformers 5 and is provided with weld labeling position line.
As shown in Figure 3, microstrip type impedance transformation saves the design of linearly type arrangement, object reduces impedance transformation save irregular change when not limiting power splitter longitudinal size and cause power splitter index to decline, and the design of linear structure, effectively improves the performance of power splitter.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (6)
1. a ultra wideband power divider, is characterized in that: comprising: printed board (1), isolation resistance (2), housing (3), cover plate, joint (4) and more piece 1/4 wavelength impedance transformers (5); The inner chamber that described housing (3) milling becomes and cover plate for sealing composition cavity, described cavity internal fixtion has described printed board (1), described printed board (1) is provided with the microstrip circuit be made up of described isolation resistance (2) and more piece 1/4 wavelength impedance transformers (5), described joint (4) comprises input adapter (6) and out splice going splice (7), the input of described microstrip circuit is provided with described input adapter (6), the output of described microstrip circuit is provided with some described out splice going splices (7), and the corner of output 50 ohm microstrip is provided with corner cut (8).
2. ultra wideband power divider according to claim 1, is characterized in that: described 1/4 wavelength impedance transformers (5) is circular arc, and some described 1/4 wavelength impedance transformers (5) are arranged by more piece 1/4 wavelength impedance transformers cascade connection type.
3. ultra wideband power divider according to claim 1, it is characterized in that: the vertical equity cross sectional shape of described cavity is identical with the shape that the more piece cascade of described 1/4 wavelength impedance transformers (5) is formed, more piece 1/4 wavelength impedance transformers (5) to be centrosymmetric arrangement along described cavity longitudinal centre line.
4. ultra wideband power divider according to claim 1, is characterized in that: described isolation resistance (2) comprises high-frequency film resistance.
5. ultra wideband power divider according to claim 1, it is characterized in that: described input adapter (6) and out splice going splice (7) are all on opening and described housing (3), the joint fuse of described out splice going splice (7) directly welds with described microstrip circuit output 50 ohm microstrip surface, wait the number of the described out splice going splice (7) of somatotype power splitter be 2 integer power times.
6. ultra wideband power divider according to claim 1, is characterized in that: described isolation resistance (2) and described 1/4 wavelength impedance transformers (5) are often saved output weld and be provided with weld labeling position line.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420675715.2U CN204167456U (en) | 2014-11-12 | 2014-11-12 | Ultra wideband power divider |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420675715.2U CN204167456U (en) | 2014-11-12 | 2014-11-12 | Ultra wideband power divider |
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| CN204167456U true CN204167456U (en) | 2015-02-18 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226365A (en) * | 2015-10-20 | 2016-01-06 | 成都威频通讯技术有限公司 | A kind of 16 points of power splitter Miniaturization Designs |
| CN106505287A (en) * | 2016-12-21 | 2017-03-15 | 丹阳特瑞莱电子有限公司 | A kind of power splitter of pressure-adjustable |
| RU2707244C1 (en) * | 2019-05-27 | 2019-11-25 | Акционерное общество "Научно-производственная фирма "Микран" | Ultra-wideband stripline power divider |
| CN110854497A (en) * | 2019-10-21 | 2020-02-28 | 武汉滨湖电子有限责任公司 | P, L dual-waveband ultra-wideband air stripline power distribution network |
| CN111834728A (en) * | 2020-08-13 | 2020-10-27 | 郝艺益 | Broadband unequal-dividing power divider of coplanar waveguide circuit |
| CN112713378A (en) * | 2020-12-04 | 2021-04-27 | 西安电子科技大学 | Ultra-wideband miniaturized power divider, design method and multi-channel communication network terminal |
| CN115084820A (en) * | 2022-07-22 | 2022-09-20 | 成都辰天信息科技有限公司 | Ultra-wideband power divider |
| CN115313007A (en) * | 2022-04-12 | 2022-11-08 | 河北军澍电子科技有限公司 | Ultra-wideband miniaturized microstrip power divider |
| CN115313009A (en) * | 2022-09-08 | 2022-11-08 | 重庆两江卫星移动通信有限公司 | Multichannel power divider and equipment for low-earth-orbit satellite communication and power divider system |
-
2014
- 2014-11-12 CN CN201420675715.2U patent/CN204167456U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226365A (en) * | 2015-10-20 | 2016-01-06 | 成都威频通讯技术有限公司 | A kind of 16 points of power splitter Miniaturization Designs |
| CN106505287A (en) * | 2016-12-21 | 2017-03-15 | 丹阳特瑞莱电子有限公司 | A kind of power splitter of pressure-adjustable |
| RU2707244C1 (en) * | 2019-05-27 | 2019-11-25 | Акционерное общество "Научно-производственная фирма "Микран" | Ultra-wideband stripline power divider |
| CN110854497A (en) * | 2019-10-21 | 2020-02-28 | 武汉滨湖电子有限责任公司 | P, L dual-waveband ultra-wideband air stripline power distribution network |
| CN111834728A (en) * | 2020-08-13 | 2020-10-27 | 郝艺益 | Broadband unequal-dividing power divider of coplanar waveguide circuit |
| CN112713378A (en) * | 2020-12-04 | 2021-04-27 | 西安电子科技大学 | Ultra-wideband miniaturized power divider, design method and multi-channel communication network terminal |
| CN115313007A (en) * | 2022-04-12 | 2022-11-08 | 河北军澍电子科技有限公司 | Ultra-wideband miniaturized microstrip power divider |
| CN115084820A (en) * | 2022-07-22 | 2022-09-20 | 成都辰天信息科技有限公司 | Ultra-wideband power divider |
| CN115313009A (en) * | 2022-09-08 | 2022-11-08 | 重庆两江卫星移动通信有限公司 | Multichannel power divider and equipment for low-earth-orbit satellite communication and power divider system |
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