CN108519961A - A kind of low-loss method of electric energy transfer based on waveguide - Google Patents
A kind of low-loss method of electric energy transfer based on waveguide Download PDFInfo
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- H—ELECTRICITY
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Abstract
The invention discloses a kind of low-loss method of electric energy transfer based on waveguide, is related to microwave transmission line field.Realize that the specific steps of the low-loss method of electric energy transfer based on waveguide include step 1：Analyze rectangular waveguide TE10The transmission characteristic of wave single mode transport；Step 2：Transimission power is sought to selected waveguide, and analyzes loss source；Step 3：The loss factor and waveguide transmission line for calculating waveguide transmission realize the efficiency of large capacity electric energy transmission, and are compared with conventional transmission line and coaxial line.The present invention is TE in the transmission mode that ensure that waveguide10In the case of wave single mode transport, power and its loss of waveguide transmission electromagnetic wave can be calculated by system terminal and simulation calculation appropriate, and compares traditional electric energy transmission line, realize low-loss transmission of the waveguide to electric energy.
Description
Technical field
The present invention relates to the low-loss method of electric energy transfer in microwave transmission line field more particularly to waveguide.
Background technology
Waveguide transmission electromagnetic wave is widely used in microwave transmission field, has in communication, radar and microwave detection system
Dabble.Waveguide transmission line is efficiently rapid with transmission compared to traditional transmission line, transimission power is big, advantages of simple structure and simple；
There are many kinds of transmission modes, wherein TE for rectangular waveguide10Under wave mode, waveguide fields inside is simple in structure, stablizes, and frequency is wide and is lost
The features such as small, thus in engineering almost without exception be operated in TE10Pattern.
Currently, it is a lot of for the research of waveguide transmission signal in the field of practical application, but for waveguide in large capacity electricity
Concern is less in terms of energy transmission, in order to transmit the electromagnetic wave of high band, prevents the radiation of electromagnetic wave, reduces insulation dielectric loss,
It is necessary using waveguide high efficiency of transmission electric energy.
The purpose of the present invention is to solve the above problems, and then provide a kind of low-loss electric energy transmission side based on waveguide
Method.
Invention content
Technical scheme of the present invention：A kind of low-loss method of electric energy transfer based on waveguide, is related to microwave transmission line field,
More particularly to the low-loss electric energy transmission in waveguide, it is characterised in that：The low-loss method of electric energy transfer based on waveguide
Specific steps include step 1：Analyze rectangular waveguide TE10The transmission characteristic of wave single mode transport；Step 2：Selected waveguide is asked
Transimission power is taken, and analyzes loss source；Step 3：The loss factor and waveguide transmission line for calculating waveguide transmission realize low-loss
The efficiency of electric energy transmission, and compared with conventional transmission line and coaxial line, analysis waveguide is as low-loss method of electric energy transfer
Possibility.
Preferably, the low-loss method of electric energy transfer based on waveguide is realized by a waveguide transmission system, it should
Waveguide transmission system includes driving source, waveguide transmission line, probe-microstrip transition structure and system terminal.
Preferably, the transmission line applied in the waveguide transmission system is rectangular waveguide transmission line, section is long
For a, width b, single mode transport, transmission mode TE can be realized10Wave, the propagation properties under the pattern meet two items
Part：（1）a≥2b；（2）Waveguide transmission frequency is more than cutoff frequency.
Preferably, being mounted with a ground connection bridge on the waveguide transmission line, ensure entire Transmission system ground connection environment
Shield effectiveness that is good and improving waveguide transmission built-in field.
Preferably, the probe-microstrip transition device, Probe medium is glass, and probe substrate is visited for fixed
Needle makes that probe is facilitated flexibly to move in waveguide cavity, reduces electromagnetic field environment in the waveguide cavity that system is brought due to high-frequency percussion
Variation, the electromagnetic field signal that probe detects is coupled in micro-strip by microstrip structure, and system terminal is transferred to by coaxial line
While ensure that the air-tightness of waveguide transmission system.
Preferably, the system terminal can measure transimission power, loss factor and the working frequency of waveguide transmission, really
The transmission mode for protecting waveguide is TE10Wave.
Beneficial effects of the present invention are：By calculate waveguide transmission line transimission power and loss factor, and with it is traditional
The efficiency of transmission of cable and coaxial line is made comparisons, and a kind of low-loss method of electric energy transfer based on waveguide is provided, and is realized pair
The low-loss electric energy of frequency electromagnetic waves transmits.
Description of the drawings
Fig. 1 is the structure chart of waveguide transmission line.
Fig. 2 is rectangular waveguide transmission line magnetic distribution figure.
Fig. 3 is the system structure diagram of the present invention.
Fig. 4 is the schematic diagram of probe-microstrip transition structure.
Specific implementation mode
Specific implementation mode one：Illustrate present embodiment in conjunction with Fig. 1 to Fig. 2, present embodiments provide for one kind being based on wave
The low-loss method of electric energy transfer led, the low-loss electric energy transmission being related in microwave transmission line field more particularly to waveguide are special
Sign is：The specific steps of the low-loss method of electric energy transfer based on waveguide include step 1：Analyze rectangular waveguide TE10
The transmission characteristic of wave single mode transport；Step 2：Transimission power is sought to selected waveguide, and analyzes loss source；Step 3：Measuring and calculating
The loss factor and waveguide transmission line of waveguide transmission realize the efficiency of low-loss electric energy transmission, and with conventional transmission line and coaxial line
It compares, possibility of the analysis waveguide as low-loss method of electric energy transfer；The rectangular waveguide transmission line, section are a length of
A, width b can realize single mode transport, transmission mode TE10Wave, the propagation properties under the pattern meet two items
Part：（1）a≥2b；（2）Waveguide transmission frequency is more than cutoff frequency；Electromagnetic wave is by waveguide wall surface electromagnetic field in the waveguide
The variation of amount has no actual fed electric current, according to TE come what is transmitted in waveguide cavity10The transmission characteristic of wave single mode transport, in waveguide
Field amount meets：
In formula, Hx, Hy, Hz are respectively the Distribution of Magnetic Field in x, y, z direction, and Ex, Ey, Ez distinguish field distribution on x, y, z direction, Hm
It is determined by excitation source strength, is given value, a is the inner wall length of waveguide sections, and β is phase constant.
Specific embodiment two：Illustrate present embodiment in conjunction with Fig. 1 to Fig. 3, one is mounted on the waveguide transmission line
A ground connection bridge ensures that entire Transmission system ground connection environment is good and improves the shield effectiveness of waveguide transmission built-in field；Institute
The probe stated-microstrip transition device, Probe medium are glass, and probe substrate makes to facilitate probe in waveguide for fixing probe
Intracavitary flexibly moves, and reduces the variation of electromagnetic field environment in the waveguide cavity that system is brought due to high-frequency percussion, and microstrip structure will
The electromagnetic field signal that probe detects is coupled in micro-strip, ensure that waveguide passes while being transferred to system terminal by coaxial line
The air-tightness of defeated system；The system terminal can measure transimission power, loss factor and the working frequency of waveguide transmission, it is ensured that
The transmission mode of waveguide is TE10Wave.
System terminal be the technical solution of the transimission power of waveguide transmission, loss and working frequency in measuring system include with
Lower step：
Step 1：System terminal connects low-power isolator first, adjusts microwave generator to a certain frequency, the spy of traverse measurement line
Pin position calculates attenuation, and can make attenuation curve；
Step 2：Change terminal into short-circuit piece, the probe location of traverse measurement line, point-to-point measurement is defeated in entire mobile range
Go out the relationship of electric current I and position L；
Step 3：Then terminal connects matched load, draws I-L-curve respectively, obtains maximum current value I1And minimum current value
I2, the wavelength X of waveguide transmission electromagnetic wave is obtained along measuring line longitudinal direction traveling probe and can measure at this time, according to formula f=c/ λ,
The measurement frequency of system can be calculated；
Step 4：Microwatt meter power supply is connected, after preheating zeroing, power meter probe is connected on coaxial line, wave can be measured
Lead the output power of transmission line；
Step 5：The measurement frequency of system is compared with the actual frequency of microwave generator, if error is in the reasonable scope,
Illustrate that waveguide realizes TE10Wave single mode transport is stable and whole system ground connection is good, the waveguide output power measured and transmission
Loss is more accurate；If difference is larger, should reexamine system air-tightness and ground connection bridge whether be grounded well, again into
Row measures.
Specific embodiment three：Present embodiment combination Fig. 2 is illustrated, and present embodiment is by passing waveguide and tradition
The feasibility of efficiently low damage transmission electric energy is realized in the efficiency comparative of defeated line transmission electric energy, analysis waveguide.
It selectes certain waveguide to be transmitted it after power and loss factor measuring and calculating, compared with conventional power cable.With
For BJ22 rectangular waveguides, BJ22 rectangular waveguide long sides a is 109.22mm, and short side b is 54.61mm, according to the survey of system terminal
It calculates, when driving source given frequency is 1.72 ~ 2.61GHz, it can be achieved that TE10Wave single mode transport, and the transmission of average transmission power P
Ranging from 0.0166 ~ 0.0108dB/m of ranging from 32.47 ~ 45.15kW, loss factor α, loss source, that is, wave guide wall generate
Joule losses, and inner cavity has no transmission electric current, dielectric loss is negligible.According to formula α=PDamage/ 2P finally, the biography of waveguide
Defeated efficiency 96.69% ~ 97.84%, this efficiency of transmission are obviously significantly larger than traditional cable transmission line, can realize to right under high frequency
The high efficiency low-loss transmission of electric energy.
Present embodiment is only to the exemplary description of this patent does not limit its scope of protection, people in the art
Member can also be changed its part, as long as it does not exceed the essence of this patent, within the protection scope of the present patent.
Claims (6)
1. a kind of low-loss method of electric energy transfer based on waveguide, it is related to low in microwave transmission line field more particularly to waveguide
Electric energy transmission is lost, it is characterised in that：The specific steps of the low-loss method of electric energy transfer based on waveguide include step
One：Analyze rectangular waveguide TE10The transmission characteristic of wave single mode transport；Step 2：Transimission power is sought to selected waveguide, and analyzes damage
Consume source；Step 3：The loss factor of measuring and calculating waveguide transmission and the efficiency of waveguide transmission line realization low-loss electric energy transmission, and with
Conventional transmission line and coaxial line compare, possibility of the analysis waveguide as low-loss method of electric energy transfer.
2. a kind of low-loss method of electric energy transfer based on waveguide according to claim 1, it is characterised in that：The base
It is realized by a waveguide transmission system in the low-loss method of electric energy transfer of waveguide, which includes driving source, wave
Lead transmission line, probe-microstrip transition structure and system terminal.
3. a kind of low-loss method of electric energy transfer based on waveguide according to claim 2, it is characterised in that：The wave
It is rectangular waveguide transmission line to lead the transmission line applied in Transmission system, and a length of a in section, width b can realize that single mode passes
It is defeated, transmission mode TE10Wave, the propagation properties under the pattern meet two conditions：（1）a≥2b；（2）Waveguide transmission
Frequency is more than cutoff frequency.
4. a kind of low-loss method of electric energy transfer based on waveguide according to claim 3, it is characterised in that：The wave
It leads and is mounted with a ground connection bridge on transmission line, ensure that entire Transmission system ground connection environment is good and improves electricity inside waveguide transmission
The shield effectiveness in magnetic field.
5. a kind of low-loss method of electric energy transfer based on waveguide according to claim 2, it is characterised in that：The spy
Needle-microstrip transition device, Probe medium are glass, and probe substrate makes to facilitate probe clever in waveguide cavity for fixing probe
Movement living, reduces the variation of electromagnetic field environment in the waveguide cavity that system is brought due to high-frequency percussion, microstrip structure visits probe
The electromagnetic field signal measured is coupled in micro-strip, ensure that waveguide transmission system while being transferred to system terminal by coaxial line
Air-tightness.
6. a kind of low-loss method of electric energy transfer based on waveguide according to claim 2, it is characterised in that：Described is
Terminal of uniting can measure transimission power, loss factor and the working frequency of waveguide transmission, it is ensured that the transmission mode of waveguide is TE10Wave.
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| CN201810351804.4A CN108519961A (en) | 2018-04-19 | 2018-04-19 | A kind of low-loss method of electric energy transfer based on waveguide |
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| CN201810351804.4A CN108519961A (en) | 2018-04-19 | 2018-04-19 | A kind of low-loss method of electric energy transfer based on waveguide |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224234A (en) * | 2018-11-26 | 2020-06-02 | 信思优有限公司 | Multi-port antenna integrated with low loss and flexible transmission line for millimeter wave frequency band |
| CN111313154A (en) * | 2020-02-25 | 2020-06-19 | 电子科技大学 | Radiation-resistant energy transmitter for microwave power transmission system |
| CN113109629A (en) * | 2021-04-23 | 2021-07-13 | 芜湖麦可威电磁科技有限公司 | High-power pulse microwave transmission feeder loss parameter accurate verification circuit and verification method |
| CN113109629B (en) * | 2021-04-23 | 2024-07-26 | 芜湖麦可威电磁科技有限公司 | High-power pulse microwave transmission feeder line loss parameter accurate verification circuit and verification method |
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| CN104064843A (en) * | 2014-06-09 | 2014-09-24 | 青岛东方循环能源有限公司 | Rectangular waveguide device for reducing microwave reflection |
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| CN104064843A (en) * | 2014-06-09 | 2014-09-24 | 青岛东方循环能源有限公司 | Rectangular waveguide device for reducing microwave reflection |
Non-Patent Citations (2)
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| （美）查尔斯·K.曼（C.K.MANN）等著；冉顺善译: "《仪器分析》", 28 February 1983, 化学工业出版社 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111224234A (en) * | 2018-11-26 | 2020-06-02 | 信思优有限公司 | Multi-port antenna integrated with low loss and flexible transmission line for millimeter wave frequency band |
| CN111313154A (en) * | 2020-02-25 | 2020-06-19 | 电子科技大学 | Radiation-resistant energy transmitter for microwave power transmission system |
| CN113109629A (en) * | 2021-04-23 | 2021-07-13 | 芜湖麦可威电磁科技有限公司 | High-power pulse microwave transmission feeder loss parameter accurate verification circuit and verification method |
| CN113109629B (en) * | 2021-04-23 | 2024-07-26 | 芜湖麦可威电磁科技有限公司 | High-power pulse microwave transmission feeder line loss parameter accurate verification circuit and verification method |
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