CN205122742U - Power distribution unit - Google Patents
Power distribution unit Download PDFInfo
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- CN205122742U CN205122742U CN201520900993.8U CN201520900993U CN205122742U CN 205122742 U CN205122742 U CN 205122742U CN 201520900993 U CN201520900993 U CN 201520900993U CN 205122742 U CN205122742 U CN 205122742U
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Abstract
The utility model discloses a power distribution unit, include: the annular chamber, input port sets up in the primary importance of annular chamber, output port group includes an output port and the 2nd output port at least, an output port sets up in the second place of annular chamber, the 2nd output port sets up on the third position of annular chamber, wherein, the second place with equivalent waveguide length between the primary importance is quarter wavelength, the third position with equivalent waveguide length between the primary importance is the three -wavelength of quarter wavelength or quartering, quarter wavelength does the fourth of the wavelength of the central frequency ripples of the first wave band that power distribution unit corresponds. The utility model provides an above -mentioned power distribution unit is arranged in solving that prior art exists, and waveguide power distribution unit can not satisfy the technical problem of the requirement of high isolation and integrated level simultaneously.
Description
Technical field
The utility model relates to electronic technology field, particularly a kind of power divider.
Background technology
At present, millimeter-wave technology extensive use in various electrical communication system, radar system.In order to ensure the transmission range that electromagnetic wave is larger, signal demand to be transmitted is through power amplification, at millimeter wave frequency band, the power output that single solid state device provides limits by device resistance or thermal effect usually, cannot practical application request be met, power synthetic technique therefore must be adopted to obtain the power output larger than individual devices.
Adopt the millimeter wave solid state source that power synthetic technique makes, due to all power device parallel operations, when a small amount of component failure, system still can work on, can not complete failure.Wherein, power divider is exactly one of Primary Component of power synthetic technique.Further, it is low that the waveguide power divider due to W-waveband has path loss, and combined coefficient is high, effective bandwidth advantages of higher, so be widely applied in the high-power synthetic technology of W-waveband assembly.
Wilkinson microstrip power divider continued to use by tradition W-waveband power divider, Wilkinson power divider structure is simple, compact, but microstrip circuit is larger in this frequency range loss, what is more important is in W-waveband, common thick-film resistor presents characteristics of distributed parameters, if be used as the isolation resistance of power divider, greatly can affect the performance of power divider, even if adopt the film resistor that cost is higher, under the centre frequency 94GHz frequency range of W-waveband, technique is also difficult to reach requirement, therefore Wilkinson microstrip power divider does not possess the isolation index of power divider substantially.Another conventional distribution network is the T-shaped joint of Waveguide branching, the problem that between the branched bottom that also there is Wilkinson power divider, isolation is low.A kind of conventional millimeter wave power distributor waveguide magic T is also had in prior art, although waveguide magic T can reach isolation index, but also there is a defect in waveguide magic T, input and two outputs are not in a plane, when the transition causing taking waveguide to micro-and chip assembling, integrated level is deteriorated, and can not meet system compact, light-weighted requirement.
Visible, the technical problem existed in prior art is: waveguide power divider can not meet the requirement of high-isolation and integrated level simultaneously.
Utility model content
The embodiment of the present application provides a kind of power divider, and exist in prior art for solving, waveguide power divider can not meet the technical problem of the requirement of high-isolation and integrated level simultaneously.
On the one hand, the embodiment of the present application provides a kind of power divider, comprising:
Annular chamber;
Input port, is arranged in the primary importance of described annular chamber;
Output port group, at least comprises the first output port and the second output port, and described first output port is arranged in the second place of described annular chamber, and described second output port is arranged on the 3rd position of described annular chamber;
Wherein, equivalent waveguide length between the described second place and described primary importance is quarter-wave, equivalent waveguide length between described 3rd position and described primary importance is quarter-wave or four/three-wavelength, and described quarter-wave is 1/4th of the wavelength of the centre frequency ripple of the first band that described power divider is corresponding.
Optionally, described power divider also comprises:
Isolated port, is arranged on the 4th position of described annular chamber, and described isolated port is used for the signal reflex entering described isolated port to return in described annular chamber;
Wherein, the equivalent waveguide length between described 4th position and the described second place is quarter-wave, and the equivalent waveguide length between described 4th position and described 3rd position is quarter-wave; Or
Equivalent waveguide length between described 4th position and the described second place is quarter-wave, and the equivalent waveguide length between described 4th position and described 3rd position is four/three-wavelength.
Optionally, described input port, described output port group and described isolated port are positioned at same plane.
Optionally, described first output port is connected with microstrip line transition structure.
Optionally, described first output port is connected with the annular chamber of next stage power divider.
Optionally, described annular chamber comprises:
Loop configuration;
Cylinder, is positioned at the center of described loop configuration, wherein, can form described annular chamber by described loop configuration and described cylinder, transmits described annular chamber to make the signal inputted from described input port.
On the other hand, the embodiment of the present application also provides a kind of power divider, comprising:
Part I;
Part II;
Cylinder;
Wherein, described Part I and described Part II fasten, and form a cavity body structure, described cylinder is positioned at the center of described cavity body structure, with the input port forming an annular chamber and be connected with described annular chamber and output port group; Described input port is positioned in the primary importance of described annular chamber; Described output port group, at least comprises the first output port and the second output port, and described first output port is positioned in the second place of described annular chamber, and described second output port is positioned on the 3rd position of described annular chamber; Equivalent waveguide length between the described second place and described primary importance is quarter-wave, equivalent waveguide length between described 3rd position and described primary importance is quarter-wave or four/three-wavelength, and described quarter-wave is 1/4th of the wavelength of the centre frequency ripple of the first band that described power divider is corresponding.
Optionally, described power divider also comprises:
Isolated port, is positioned on the 4th position of described annular chamber, and described isolated port is used for the signal reflex entering described isolated port to return in described annular chamber;
Wherein, the equivalent waveguide length between described 4th position and the described second place is quarter-wave, and the equivalent waveguide length between described 4th position and described 3rd position is quarter-wave; Or
Equivalent waveguide length between described 4th position and the described second place is quarter-wave, and the equivalent waveguide length between described 4th position and described 3rd position is four/three-wavelength.
Optionally, described input port, described output port group and described isolated port are positioned at same plane.
Optionally, described first output port is connected with microstrip line transition structure; Or
Described first output port is connected with the annular chamber of next stage power divider.
Above-mentioned one or more technical scheme in the embodiment of the present application, at least has one or more technique effects following:
In the scheme of 1, the embodiment of the present application, power divider comprises: annular chamber, be arranged on the input port in primary importance, the second output port being arranged on the first output port in the second place and being arranged on the 3rd position, wherein, equivalent waveguide length between the described second place and described primary importance is quarter-wave, and the equivalent waveguide length between described 3rd position and described primary importance is quarter-wave or four/three-wavelength.When input port input signal, the first output port and the second output port isolated port each other, and by the length of equivalent waveguide between adjustment port, the signal phase difference between the first output port and the second output port can be adjusted.
Visible, in the scheme of the application, there is between output port good interport isolation, and input port, output port and annular chamber are all positioned at same plane, easily integrated, and then solve and exist in prior art, waveguide power divider can not meet the technical problem of the requirement of high-isolation and integrated level simultaneously, meet the high-isolation of power divider and the requirement of integrated level by disc waveguide power divider.
In the scheme of 2, the embodiment of the present application, because input port and output port are positioned at same plane, output port can connect microstrip line transition structure, or as the input of next stage power divider.Further, disc waveguide power divider can directly be integrated in system cavity, and then effectively reduces entire system volume and weight.
Accompanying drawing explanation
Fig. 1 is the front view of disc waveguide power divider in the embodiment of the present application;
Fig. 2 is the end view of disc waveguide power divider in the embodiment of the present application;
Fig. 3 is the front view of another disc waveguide power divider in the embodiment of the present application;
Fig. 4 is the typical electrical bridge construction schematic diagram of hybrid ring in the embodiment of the present application;
Fig. 5 is the power splitting/synthesis network schematic diagram of disc waveguide power divider in the embodiment of the present application;
Fig. 6 is the echo parameter characteristic schematic diagram of disc waveguide power divider in the embodiment of the present application;
Fig. 7 is the isolation schematic diagram between the output port of disc waveguide power divider in the embodiment of the present application;
Fig. 8 is the phase place schematic diagram of the output signal of the output port of disc waveguide power divider in the embodiment of the present application;
Fig. 9 is the magnetic distribution schematic diagram in the embodiment of the present application in disc waveguide power divider;
Figure 10 is the processing structure schematic diagram of the lower chamber of disc waveguide power divider in the embodiment of the present application;
Figure 11 is the processing structure schematic diagram of the upper cavity of disc waveguide power divider in the embodiment of the present application.
Embodiment
In the technical scheme that the embodiment of the present application provides, based on disc waveguide principle, solve in prior art by disc waveguide power divider, waveguide power divider can not meet the technical problem of the requirement of high-isolation and integrated level simultaneously, meets the high-isolation of power divider and the requirement of integrated level by disc waveguide power divider.
Below in conjunction with accompanying drawing, the main of the embodiment of the present application technical scheme is realized principle, embodiment and be explained in detail the beneficial effect that should be able to reach.
As depicted in figs. 1 and 2, the embodiment of the present application provides a kind of power divider, comprising:
Annular chamber 1;
Input port 2, is arranged in the primary importance of described annular chamber 1;
Output port group, at least comprise the first output port 3 and the second output port 4, described first output port 3 is arranged in the second place of described annular chamber 1, and described second output port 4 is arranged on the 3rd position of described annular chamber 1;
Wherein, equivalent waveguide length between the described second place and described primary importance is quarter-wave, equivalent waveguide length between described 3rd position and described primary importance is quarter-wave or four/three-wavelength, and described quarter-wave is 1/4th of the wavelength of the centre frequency ripple of the first band that described power divider is corresponding.
In the embodiment of the present application, the service band of power divider is W-waveband, and respective frequencies is at 75 ~ 100GHz, and centre frequency 94GHz, corresponding wavelength is 3.2mm, is also referred to as 3mm ripple.When then equivalent waveguide length is quarter-wave, equivalent waveguide length is 0.8mm, and when equivalent waveguide length is four/three-wavelength, equivalent waveguide length is 2.4mm.
In the embodiment of the present application, annular chamber 1 comprises: loop configuration 10 and cylinder 11, and wherein, cylinder 11 is positioned at the center of described loop configuration 10.Then can form described annular chamber 1 by described loop configuration 10 and described cylinder 11, transmit described annular chamber 1 to make the signal inputted from described input port 2.
In specific implementation process, cylinder 11 can be metal cylinder, and in actual applications, the central entity in annular chamber 1 generally adopts copper post, and annular chamber 1 remainder is air chamber ideally.
In the embodiment of the present application, the principle of disc waveguide power divider is the typical electrical bridge construction according to hybrid ring, as shown in Figure 4, quarter-wave equivalent waveguide is differed between each adjacent port in disc waveguide, when 1 port input, 2 ports and 3 ports export constant-amplitude signal, and 4 ports are that isolated port does not export.2 ports and 3 ports isolation end each other, and two-port signal phase difference can be adjusted by the length of waveguide between port.
Then in the embodiment of the present application, equivalent waveguide length between first output port 3 and input port 2 is quarter-wave, equivalent waveguide length between second output port 4 and input port 2 can be quarter-wave, as shown in Figure 1, now, the signal that first output port 3 and the second output port 4 export is constant-amplitude signal in the same way, and phase difference value is 0; Equivalent waveguide length between second output port 4 and input port 2 also can be four/three-wavelength, and as shown in Figure 3, then the signal that the first output port 3 and the second output port 4 export is reverse constant-amplitude signal, phase 180 degree.
Further, in the embodiment of the present application, described power divider also comprises:
Isolated port 5, is arranged on the 4th position of described annular chamber 1, and described isolated port 5 is for returning the signal reflex entering described isolated port 5 in described annular chamber 1.Owing to employing the short circuit face of four/wavelength, the signal entering isolated port 5 is all reflexed in annular chamber 1, in specific implementation process, also just no longer need matched load, and then improve application and easy intensity.
Specifically, equivalent waveguide length between described 4th position and the described second place is quarter-wave, equivalent waveguide length between described 4th position and described 3rd position is quarter-wave, namely the equivalent waveguide length between isolated port 5 and the first output port 3 is quarter-wave, equivalent waveguide length between isolated port 5 and the second output port 4 is also quarter-wave, as shown in Figure 1.
In another kind of optional embodiment, equivalent waveguide length between described 4th position and the described second place is quarter-wave, equivalent waveguide length between described 4th position and described 3rd position is four/three-wavelength, namely the equivalent waveguide length between isolated port 5 and the first output port 3 is quarter-wave, equivalent waveguide length between isolated port 5 and the second output port 4 is four/three-wavelength, as shown in Figure 3.
In the embodiment of the present application, annular chamber 1, input port 2, output port group and isolated port 5 are all positioned at same plane, are convenient to connect microstrip line transition structure.In addition, the first output port 3 and the second output port 4 can also as the input ports of next stage power divider, and the signal exported by the first output port 3 or the second output port 4 is as the input signal of next stage power divider.
Next, the simulation result of the power divider in the embodiment of the present application is introduced.
Specifically, the port position of power divider as shown in Figure 1, setting centre frequency is 94GHz, system effect bandwidth is 92GHz-96GHz, 3 D electromagnetic simulation software AnsoftHFSS is adopted to carry out building model and simulation, as shown in Figure 5, be the power splitting/synthesis network of the disc waveguide power divider in the embodiment of the present application.
Wherein, in passband 92GHz-96GHz, power divider two output port signal S12, S13 are between-2.99dB to-3.07dB, and in-band insertion loss is within 0.07dB, and two-way unevenness is less than 0.08dB.
As shown in Figure 6, be the echo parameter characteristic schematic diagram of disc waveguide power divider, wherein, the return loss S11 of Power divider input port 2 is below-22dB, and the return loss at center frequency point 94GHz place is-25.35dB.
As shown in Figure 7, be the isolation schematic diagram between output port.Wherein, the isolation of the first output port 3 and the second output port 4 is between 27dB-36dB.
As shown in Figure 8, be the phase relation between the first output port 3 and the second output port 4, both differ 180 degree.
As shown in Figure 9, be the magnetic distribution schematic diagram in disc waveguide power divider, isolated port does not have signal to export.
From above-mentioned simulation result, the advantages such as the ring-like waveguide power divider in the embodiment of the present application has high-isolation, bandwidth, Insertion Loss is low, volume is little, unevenness is little, are applicable to the fields such as millimeter wave communication, radar, guidance, electronic countermeasures.
The embodiment of the present application also provides a kind of power divider, comprising:
Part I;
Part II;
Cylinder;
Wherein, described Part I and described Part II fasten, and form a cavity body structure, described cylinder is positioned at the center of described cavity body structure, with the input port forming an annular chamber and be connected with described annular chamber and output port group; Described input port is positioned in the primary importance of described annular chamber; Described output port group, at least comprises the first output port and the second output port, and described first output port is positioned in the second place of described annular chamber, and described second output port is positioned on the 3rd position of described annular chamber; Equivalent waveguide length between the described second place and described primary importance is quarter-wave, equivalent waveguide length between described 3rd position and described primary importance is quarter-wave or four/three-wavelength, and described quarter-wave is 1/4th of the wavelength of the centre frequency ripple of the first band that described power divider is corresponding.
Specifically, for convenience of processing and later stage assembling, be divided into by power divider two parts to process, be respectively upper and lower two cavitys, wherein, Part I is lower chamber, as shown in Figure 10, be the processing structure schematic diagram of lower chamber, Part II is upper cavity, as shown in figure 11, be the processing structure schematic diagram of upper cavity.
Process separately the copper post that middle groups circularizes cavity configuration again, when assembling, copper post and shop bolt are first fixed on lower chamber, then upper cavity is slowly coordinated installation.
In order to matching standard ring flange, disc waveguide power divider can be integrated in power divider module in the size of 90mm*72mm*20mm; Further, power divider directly can also be integrated in system cavity, each port can directly connect microstrip line transition structure, and then realizes miniaturized, lightweight and the high characteristic of degree easy of integration.
Optionally, described power divider also comprises:
Isolated port, is positioned on the 4th position of described annular chamber, and described isolated port is used for the signal reflex entering described isolated port to return in described annular chamber;
Wherein, the equivalent waveguide length between described 4th position and the described second place is quarter-wave, and the equivalent waveguide length between described 4th position and described 3rd position is quarter-wave; Or
Equivalent waveguide length between described 4th position and the described second place is quarter-wave, and the equivalent waveguide length between described 4th position and described 3rd position is four/three-wavelength.
Optionally, described input port, described output port group and described isolated port are positioned at same plane.
Optionally, described first output port is connected with microstrip line transition structure; Or
Described first output port is connected with the annular chamber of next stage power divider.
By the one or more technical schemes in the embodiment of the present application, following one or more technique effect can be realized:
In the scheme of 1, the embodiment of the present application, power divider comprises: annular chamber, be arranged on the input port in primary importance, the second output port being arranged on the first output port in the second place and being arranged on the 3rd position, wherein, equivalent waveguide length between the described second place and described primary importance is quarter-wave, and the equivalent waveguide length between described 3rd position and described primary importance is quarter-wave or four/three-wavelength.When input port input signal, the first output port and the second output port isolated port each other, and by the length of equivalent waveguide between adjustment port, the signal phase difference between the first output port and the second output port can be adjusted.
Visible, in the scheme of the application, there is between output port good interport isolation, and input port, output port and annular chamber are all positioned at same plane, easily integrated, and then solve and exist in prior art, waveguide power divider can not meet the technical problem of the requirement of high-isolation and integrated level simultaneously, meet the high-isolation of power divider and the requirement of integrated level by disc waveguide power divider.
In the scheme of 2, the embodiment of the present application, because input port and output port are positioned at same plane, output port can connect microstrip line transition structure, or as the input of next stage power divider.Further, disc waveguide power divider can directly be integrated in system cavity, and then effectively reduces entire system volume and weight.
Although described preferred embodiment of the present utility model, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the utility model scope.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (10)
1. a power divider, is characterized in that, comprising:
Annular chamber;
Input port, is arranged in the primary importance of described annular chamber;
Output port group, at least comprises the first output port and the second output port, and described first output port is arranged in the second place of described annular chamber, and described second output port is arranged on the 3rd position of described annular chamber;
Wherein, equivalent waveguide length between the described second place and described primary importance is quarter-wave, equivalent waveguide length between described 3rd position and described primary importance is quarter-wave or four/three-wavelength, and described quarter-wave is 1/4th of the wavelength of the centre frequency ripple of the first band that described power divider is corresponding.
2. power divider as claimed in claim 1, it is characterized in that, described power divider also comprises:
Isolated port, is arranged on the 4th position of described annular chamber, and described isolated port is used for the signal reflex entering described isolated port to return in described annular chamber;
Wherein, the equivalent waveguide length between described 4th position and the described second place is quarter-wave, and the equivalent waveguide length between described 4th position and described 3rd position is quarter-wave; Or
Equivalent waveguide length between described 4th position and the described second place is quarter-wave, and the equivalent waveguide length between described 4th position and described 3rd position is four/three-wavelength.
3. power divider as claimed in claim 2, it is characterized in that, described input port, described output port group and described isolated port are positioned at same plane.
4. power divider as claimed in claim 1, it is characterized in that, described first output port is connected with microstrip line transition structure.
5. power divider as claimed in claim 1, it is characterized in that, described first output port is connected with the annular chamber of next stage power divider.
6. power divider as claimed in claim 1, it is characterized in that, described annular chamber comprises:
Loop configuration;
Cylinder, is positioned at the center of described loop configuration, wherein, can form described annular chamber by described loop configuration and described cylinder, transmits described annular chamber to make the signal inputted from described input port.
7. a power divider, is characterized in that, comprising:
Part I;
Part II;
Cylinder;
Wherein, described Part I and described Part II fasten, and form a cavity body structure, described cylinder is positioned at the center of described cavity body structure, with the input port forming an annular chamber and be connected with described annular chamber and output port group; Described input port is positioned in the primary importance of described annular chamber; Described output port group, at least comprises the first output port and the second output port, and described first output port is positioned in the second place of described annular chamber, and described second output port is positioned on the 3rd position of described annular chamber; Equivalent waveguide length between the described second place and described primary importance is quarter-wave, equivalent waveguide length between described 3rd position and described primary importance is quarter-wave or four/three-wavelength, and described quarter-wave is 1/4th of the wavelength of the centre frequency ripple of the first band that described power divider is corresponding.
8. power divider as claimed in claim 7, it is characterized in that, described power divider also comprises:
Isolated port, is positioned on the 4th position of described annular chamber, and described isolated port is used for the signal reflex entering described isolated port to return in described annular chamber;
Wherein, the equivalent waveguide length between described 4th position and the described second place is quarter-wave, and the equivalent waveguide length between described 4th position and described 3rd position is quarter-wave; Or
Equivalent waveguide length between described 4th position and the described second place is quarter-wave, and the equivalent waveguide length between described 4th position and described 3rd position is four/three-wavelength.
9. power divider as claimed in claim 8, it is characterized in that, described input port, described output port group and described isolated port are positioned at same plane.
10. power divider as claimed in claim 7, it is characterized in that, described first output port is connected with microstrip line transition structure; Or
Described first output port is connected with the annular chamber of next stage power divider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520900993.8U CN205122742U (en) | 2015-11-12 | 2015-11-12 | Power distribution unit |
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| CN201520900993.8U CN205122742U (en) | 2015-11-12 | 2015-11-12 | Power distribution unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111063975A (en) * | 2019-12-17 | 2020-04-24 | 南京理工大学 | Ka-band GYSEL power divider based on ridge gap waveguide |
| CN114824717A (en) * | 2022-04-21 | 2022-07-29 | 中国电子科技集团公司第十三研究所 | Trisection power divider with isolation and microwave transmitting system |
-
2015
- 2015-11-12 CN CN201520900993.8U patent/CN205122742U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111063975A (en) * | 2019-12-17 | 2020-04-24 | 南京理工大学 | Ka-band GYSEL power divider based on ridge gap waveguide |
| CN114824717A (en) * | 2022-04-21 | 2022-07-29 | 中国电子科技集团公司第十三研究所 | Trisection power divider with isolation and microwave transmitting system |
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