CN104218295A - Waveguide ring bridge - Google Patents
Waveguide ring bridge Download PDFInfo
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- CN104218295A CN104218295A CN201410510885.XA CN201410510885A CN104218295A CN 104218295 A CN104218295 A CN 104218295A CN 201410510885 A CN201410510885 A CN 201410510885A CN 104218295 A CN104218295 A CN 104218295A
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Abstract
The invention relates to a waveguide ring bridge. The waveguide ring bridge comprises four cuboid waveguides and a hollow cylinder structure, wherein the cylinder structure serves as a waveguide ring, the four waveguides form a diverging bridge with the cylinder structure serving as the center, two waveguides serving as input waveguide ports and the other two waveguides serving as output waveguide ports are arranged in a staggered mode, and the adjacent waveguide serving as an input waveguide port and the waveguide serving as an output waveguide port are oppositely arranged with the cylinder structure serving as the center. According to the waveguide ring bridge, the cuboid waveguides are used for replacing a micro-strip line to obtain the waveguide ring bridge on the basis of a micro-strip ring bridge. The waveguide ring bridge is simple in structure, easy to machine and capable of ensuring the machining accuracy for reducing the insertion loss as much as possible, has high isolation and power capacity by combining the advantages of the micro-strip line ring bridge and the waveguide structure in performance, and improves the reflection coefficient.
Description
Technical field
The present invention relates to passive four port networks be applied in radio physics, microwave and electromagnetic field technology field, be particularly applied to a kind of wave guide ring electric bridge in power distributing network.
Background technology
Along with the continuous progress of science and technology, in various radar, navigation, wireless communications application, the demand of people to the electromagnetic wave utilization of resources just constantly increases, this makes people ceaselessly seek to utilize the electromagnetic wave of more high band, current millimeter-wave technology is just obtaining unprecedented development, and the electronic system of various millimeter wave frequency band is just progressively applied.Power amplifier is as a very important assembly in electronic system, and its power output is the problem that people are concerned about all the time.In millimere-wave band, in order to reach larger power output, usually adopt the method for power combing.As a kind of comparatively conventional assembly, ring-shape bridge has been widely used in the power division comprise network of various 90 °, 180 °, and its good isolation makes it can be applied in the structure of power division and power combing.The planar structure of what current ring-shape bridge great majority adopted is microstrip line, its volume is little, and is easy to integrated with other device, but is also faced with the problem that loss is large, power capacity is little.
Summary of the invention
The present invention adopts waveguide to achieve a kind of wave guide ring electric bridge structure, thus can obtain larger power capacity, and has less Insertion Loss.
In order to realize the function of homophase power division, the present invention adopts following technical scheme:
A kind of wave guide ring electric bridge, it is characterized in that: the column structure comprising four rectangular-shaped waveguides and a hollow, column structure is as waveguide ring, four waveguides are centered by column structure, form the electric bridge of divergent shape, wherein two waveguides are as input waveguide port, two other waveguide as output waveguide port, as the waveguide of input waveguide port and the alternate setting of waveguide of output waveguide port; Wherein, an adjacent waveguide as input waveguide port and a waveguide as output waveguide port is had to arrange in 180 ° centered by column structure; The shape of described rectangular-shaped waveguide is all identical, and each waveguide is connected with the side of column structure by identical end face.
The cross section of the column structure of described hollow is circular, has carried out the distribution of electromagnetic field, cancels out each other in the column structure of hollow, realizes the function that power division exports.
In four waveguides, between the first input waveguide port and the first output waveguide port, angle is 60 °, and between the first input waveguide port and the second input waveguide port, angle is 60 °, and between the second input waveguide port and the second output waveguide port, angle is 60 °.
The size of described waveguide determines according to working frequency range, 1.5 times that the central circumference of column structure (i.e. the circumference that half place between the inside and outside circle of the annular of column structure is corresponding) is operation wavelength.
The specific works process of the waveguide ring electric bridge of this structure is as follows:
When electromagnetic wave is from the first input waveguide port input, electromagnetic wave through waveguide loop coupling to the first output waveguide port, the second output waveguide port, the electromagnetic wave phase place of two output waveguide ports is identical, so the first input waveguide port is homophase input waveguide port, the second input waveguide port no-output;
When electromagnetic wave is from the second input waveguide port input, electromagnetic wave through waveguide loop coupling to the first output waveguide port, the second output waveguide port, at this moment the electromagnetic wave phase phasic difference 180 ° of two output waveguide ports, i.e. anti-phase output, so the second input waveguide port is anti-phase input waveguide port, and the first input waveguide port no-output.
One of them waveguide is provided with pin post, pin post is used for Optimized Matching, reduces reflection coefficient.Pin post is metal cylinder structure, and whole wave guide ring electric bridge can be processed by miller.
Beneficial effect of the present invention is as follows:
Structure of the present invention is simply easy to processing, is convenient to ensure that machine adds precision, thus reduction Insertion Loss little as far as possible; In performance, present invention incorporates the advantage of microstrip line ring-shape bridge and waveguiding structure, there is higher isolation and power capacity, further improve reflection coefficient; Adopt the method in the present invention, can realize the power division of millimeter wave, in Q-band, the reflection of ring-shape bridge is less than-20dB, and the transmission coefficient of output port is all greater than-3.4dB, and isolation is greater than 20dB, export phase unbalance degree to be less than ± 5 °.
Accompanying drawing explanation
Fig. 1 is cross section structure schematic diagram of the present invention
Fig. 2 is perspective view of the present invention
Fig. 3 is working signal schematic diagram of the present invention
Wherein, Reference numeral is: 1 input waveguide port, 2 output waveguide ports, 3 output waveguide ports, 4 input waveguide ports, 5 pin posts, 6 waveguide rings.
Embodiment
As shown in Figure 1-2, based on the principle of microstrip line ring-shape bridge, form a wave guide ring electric bridge by the column structure of four rectangular-shaped waveguides and a hollow.
An end face of each waveguide is all connected with the side of column structure; Four waveguides take column structure as the electric bridge be formed centrally in connecting in divergent shape, wherein column structure is as waveguide ring 6, two waveguides are as input waveguide port one, 4, two other waveguide as output waveguide port 2,3, as the waveguide of input waveguide port and the alternate setting of waveguide of output waveguide port.
The cross section of the column structure of described hollow is circular, has carried out the distribution of electromagnetic field, cancels out each other in the column structure of hollow, realizes the function that power division exports.
The detailed process of described homophase power division is: electromagnetic wave inputs from the homophase input waveguide port one of ring-shape bridge and transmits along rectangular waveguide, power division is carried out in waveguide and waveguide ring 6 interface, because interface is symmetrical, therefore electromagnetic wave divides that success rate is equal, two bundles of phase 180 °, transmits in opposite direction in waveguide ring 6.When two bundle electromagnetic waves arrive the interface of waveguide ring 6 and second, third waveguide respectively, electromagnetic wave to be coupled to separately in rectangular waveguide and to output to output waveguide port 2,3, wherein a road electromagnetic wave transmits the transmission path of half wavelength more than another road electromagnetic wave, this effect is superimposed upon on anti-phase electromagnetic wave and makes electromagnetic wave become homophase, therefore obtain constant power homophase electromagnetic wave in two-way waveguide to export, realize homophase power dividing function.The electromagnetic transmission be not coupled is to the 4th waveguide, and because two bundle electromagnetic transmissions also differ half wavelength to the path of the 4th waveguide, and interface can cause the relative phase shift of 180 ° to two bundle electromagnetic waves, and therefore in the 4th waveguide, power output is zero.According to above analysis, and in conjunction with waveguide lossless characteristic, can calculate, two output port power outputs are 1/2nd of input power.
The concrete of described anti-phase power division crosses appellation: electromagnetic wave inputs from the anti-phase input waveguide port 4 of ring-shape bridge and transmits along rectangular waveguide, power division is carried out in waveguide and waveguide ring 6 interface, because interface is symmetrical, therefore electromagnetic wave divides that success rate is equal, two bundles of phase 180 °, transmits in opposite direction in waveguide ring 6.When two bundle electromagnetic waves arrive the interface of waveguide ring 6 and second, third waveguide respectively, electromagnetic wave to be coupled to separately in rectangular waveguide and to output to output waveguide port 2,3, because the electromagnetic power of two bundles is equal, phase place is contrary, and have passed through the transmission path of the same length, what therefore obtain is that the anti-phase electromagnetic wave of constant power exports, and realizes anti-phase power dividing function.The electromagnetic transmission be not coupled is to the 4th waveguide, because two bundle electromagnetic transmissions also differ half wavelength to the path of the 4th waveguide, and interface can cause the relative phase shift of 180 ° to two bundle electromagnetic waves, therefore in the 4th rectangular waveguide, power output is zero.According to above analysis, and in conjunction with waveguide lossless characteristic, can calculate, two output port power outputs are 1/2nd of input power.
Input waveguide port one, 4 and output waveguide port 2,3 totally four waveguides, be the rectangular-shaped waveguiding structure that sectional dimension is identical, the longitudinal cross-section of column structure 6 is identical with the face size of four waveguides 1,2,3,4.
The cross section of the column structure of described hollow is circular, has carried out the distribution of electromagnetic field, cancels out each other in the column structure of hollow, realizes the function that power division exports.In four waveguides, between the first input waveguide port and the first output waveguide port, angle is 60 °, and between the first input waveguide port and the second input waveguide port, angle is 60 °, and between the second input waveguide port and the second output waveguide port, angle is 60 °.
As shown in Figure 3, the specific works process of the waveguide ring electric bridge of this structure is as follows:
When electromagnetic wave is from the first input waveguide port one input, electromagnetic wave is coupled to the first output waveguide port 2, second output waveguide port 3 through waveguide ring 6, the electromagnetic wave phase place of two output waveguide ports is identical, so the first input waveguide port one is homophase input waveguide port, the second input waveguide port 4 no-output;
When electromagnetic wave inputs from the second input waveguide port 4, electromagnetic wave is coupled to the first output waveguide port 2, second output waveguide port 3 through waveguide ring 6, at this moment the electromagnetic wave phase phasic difference 180 ° of two output waveguide ports, i.e. anti-phase output, so the second input waveguide port 4 is anti-phase input waveguide port, and the first input waveguide port one no-output.
The size of described waveguide determines according to working frequency range, and the central circumference of column structure is 1.5 times of operation wavelength.
One of them waveguide described is provided with pin post 5, and pin post 5 is used for Optimized Matching, reduces reflection coefficient.Pin post 5 is metal cylinder structure, and whole wave guide ring electric bridge can be processed by miller.
Claims (7)
1. a wave guide ring electric bridge, it is characterized in that: the column structure comprising four rectangular-shaped waveguides and a hollow, column structure is as waveguide ring (6), four waveguides are centered by column structure, form the electric bridge of divergent shape, wherein two waveguides are as input waveguide port (1,4), two other waveguide as output waveguide port (2,3), as the waveguide of input waveguide port and the alternate setting of waveguide of output waveguide port; Wherein, an adjacent waveguide as input waveguide port and a waveguide as output waveguide port is had to arrange in 180 ° centered by column structure.
2. a kind of wave guide ring electric bridge according to claim 1, is characterized in that: the shape of described rectangular-shaped waveguide is all identical, and each waveguide is connected with the side of column structure by identical end face.
3. a kind of wave guide ring electric bridge according to claim 1, is characterized in that: the cross section of the column structure of described hollow is circular, completes the distribution of electromagnetic field, cancels out each other in the column structure of hollow, realizes power division and exports.
4. a kind of wave guide ring electric bridge according to claim 1, it is characterized in that: in four waveguides, between first input waveguide port and the first output waveguide port, angle is 60 °, between first input waveguide port and the second input waveguide port, angle is 60 °, and between the second input waveguide port and the second output waveguide port, angle is 60 °.
5. a kind of wave guide ring electric bridge according to claim 1, is characterized in that: the size of described waveguide determines according to working frequency range, and the central circumference of column structure is 1.5 times of operation wavelength.
6. a kind of wave guide ring electric bridge according to claim 1, is characterized in that: a waveguide in four waveguides is provided with pin post (5), and described pin post (5) is metal cylinder structure.
7. a kind of wave guide ring electric bridge according to claim 1, is characterized in that: the specific works process of described waveguide ring electric bridge is as follows:
When electromagnetic wave is from the first input waveguide port input, electromagnetic wave is coupled to the first output waveguide port, the second output waveguide port through waveguide ring (6), the electromagnetic wave phase place of two output waveguide ports is identical, so the first input waveguide port is homophase input waveguide port, the second input waveguide port no-output;
When electromagnetic wave is from the second input waveguide port input, electromagnetic wave is coupled to the first output waveguide port, the second output waveguide port through waveguide ring (6), at this moment the electromagnetic wave phase phasic difference 180 ° of two output waveguide ports, i.e. anti-phase output, so the second input waveguide port is anti-phase input waveguide port, and the first input waveguide port no-output.
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| CN201410510885.XA CN104218295A (en) | 2014-09-29 | 2014-09-29 | Waveguide ring bridge |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161809A (en) * | 2015-08-19 | 2015-12-16 | 南京理工大学 | High-isolation 3-decibel hybrid ring applying different guided wave structures for sum and difference branch |
| CN105337013A (en) * | 2015-11-13 | 2016-02-17 | 太原理工大学 | Zero-refractive-index-material-based waveguide power divider |
| CN109860999A (en) * | 2018-12-10 | 2019-06-07 | 清华大学 | Waveguide excitation Terahertz microstrip antenna |
| CN110752439A (en) * | 2019-11-15 | 2020-02-04 | Oppo广东移动通信有限公司 | Antenna module and terminal |
| CN110797642A (en) * | 2019-11-15 | 2020-02-14 | Oppo广东移动通信有限公司 | Antenna module and terminal |
| CN110829023A (en) * | 2019-11-15 | 2020-02-21 | Oppo广东移动通信有限公司 | Antenna module and terminal |
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| US20060109063A1 (en) * | 2004-11-23 | 2006-05-25 | Kyocera America, Inc. | Matching for ring hybrid |
| US20110227667A1 (en) * | 2008-11-26 | 2011-09-22 | Hiroshi Uchimura | Waveguide type rat-race circuit and mixer using same |
| CN103956555A (en) * | 2014-05-06 | 2014-07-30 | 北京遥测技术研究所 | Ka frequency band miniaturization waveguide three-path equipower distribution synthesizer |
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2014
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| US20060109063A1 (en) * | 2004-11-23 | 2006-05-25 | Kyocera America, Inc. | Matching for ring hybrid |
| US20110227667A1 (en) * | 2008-11-26 | 2011-09-22 | Hiroshi Uchimura | Waveguide type rat-race circuit and mixer using same |
| CN103956555A (en) * | 2014-05-06 | 2014-07-30 | 北京遥测技术研究所 | Ka frequency band miniaturization waveguide three-path equipower distribution synthesizer |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161809A (en) * | 2015-08-19 | 2015-12-16 | 南京理工大学 | High-isolation 3-decibel hybrid ring applying different guided wave structures for sum and difference branch |
| CN105161809B (en) * | 2015-08-19 | 2018-03-09 | 南京理工大学 | With poor branch road using Bu Tong guided wave structure 3 decibels of mixing rings of high isolation |
| CN105337013A (en) * | 2015-11-13 | 2016-02-17 | 太原理工大学 | Zero-refractive-index-material-based waveguide power divider |
| CN105337013B (en) * | 2015-11-13 | 2018-07-17 | 太原理工大学 | A kind of waveguide power distributor based on zero refraction materials |
| CN109860999A (en) * | 2018-12-10 | 2019-06-07 | 清华大学 | Waveguide excitation Terahertz microstrip antenna |
| CN110752439A (en) * | 2019-11-15 | 2020-02-04 | Oppo广东移动通信有限公司 | Antenna module and terminal |
| CN110797642A (en) * | 2019-11-15 | 2020-02-14 | Oppo广东移动通信有限公司 | Antenna module and terminal |
| CN110829023A (en) * | 2019-11-15 | 2020-02-21 | Oppo广东移动通信有限公司 | Antenna module and terminal |
| CN110829023B (en) * | 2019-11-15 | 2021-11-02 | Oppo广东移动通信有限公司 | Antenna module and terminal |
| CN110752439B (en) * | 2019-11-15 | 2021-11-12 | Oppo广东移动通信有限公司 | Antenna module and terminal |
| CN110797642B (en) * | 2019-11-15 | 2021-11-12 | Oppo广东移动通信有限公司 | Antenna module and terminal |
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Application publication date: 20141217 |