CN109298367A - A kind of waveguide transmission phase standard device and design method - Google Patents
A kind of waveguide transmission phase standard device and design method Download PDFInfo
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- CN109298367A CN109298367A CN201811375098.3A CN201811375098A CN109298367A CN 109298367 A CN109298367 A CN 109298367A CN 201811375098 A CN201811375098 A CN 201811375098A CN 109298367 A CN109298367 A CN 109298367A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
- G01R35/007—Standards or reference devices, e.g. voltage or resistance standards, "golden references"
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Abstract
This application discloses a kind of waveguide transmission phase standard device design methods, comprise the steps of, by standard waveguide broadside and narrow side size, are determined as phase standard device broadside and narrow side size；Calculate vacuum wavelength；According to broadside size and vacuum wavelength, channel combine is calculated；According to channel combine, calculating the phase standard device introducing dephased length initial value, the introducing phase shift size is 270 °~300 ° arbitrary integers；Using broadside size, narrow side size and the length initial value as initial parameter, by the length initial value stepping 1%, phase standard device phase distribution in working frequency range is calculated；Phase change is covered into -180 °~+180 ° corresponding length values, is determined as the length of phase standard device.Disclosed herein as well is a kind of waveguide transmission phase standard devices.Be not in the phase multicycle in working frequency range, be conducive to phase measurement, waveguide sheet form simple structure and convenient processing, at low cost, mounting flange, does not improve machining accuracy and phase calibration accuracy.
Description
Technical field
This application involves standard field more particularly to a kind of waveguide transmission phase standard device and design methods.
Background technique
Vector network analyzer is the instrument for measuring the Microwave Nets such as microwave amplifier, coupler, power splitter, isolator
Device is widely used in the links such as microwave device development, manufacture, calibration.Since vector network analyzer is there are systematic error,
It must be calibrated, for the align mode of testing instruments after calibration, be needed using a series of with fixed before the use
The inspection part of scale value tests to vector network analyzer.Examining part mainly includes reflection amplitudes standard, transmission amplitude mark
Quasi- device and transmission phase standard device.Wherein phase standard device mainly uses standard mismatch device to realize, transmission amplitude criteria device is main
It is realized using standard attenuator, transmission phase standard device mainly uses rationality matched transmission line to realize.In the millimeter of 50GHz or more
Wave frequency section, microwave transmission line form generally use rectangular waveguide transmission line.
Waveguide transmission phase standard device generallys use wide waveguide, narrow side size and the frequency range standard waveguide width side size phase
Same matched waveguide section realizes that length is usually 5cm.Use width side size wave identical with the frequency range standard waveguide size
It leads, main purpose is to make itself and the frequency range Wave guide system impedance matching, approximate ideal matched transmission line.Conventional transmission phase standard
The length selection of device waveguide segment does not specially require, and generally selecting length is 5cm, for higher millimeter wave frequency band such as 110GHz
When above, the multicycle will occur between -180 °~+180 ° in the phase that vector network analyzer measures waveguide segment generation, no
Conducive to the calculating of each frequency point phase theoretical value, also it is easy to make the phase value of each integer frequency point of each care to generate repetition.Meanwhile by
The standard value that phase shift is introduced in phase standard device is calculated by its physical length, traditional waveguide segment longer dimension,
And both ends need to want mounting flange, can reduce the accuracy of linear measure longimetry, to influence the accuracy of phase theoretical value calibration.
Summary of the invention
In view of this, the application provides a kind of waveguide transmission phase standard device and design method, existing phase standard is solved
The calibration accuracy of device phase is not high and the problem of multicycle occurs.
The embodiment of the present application provides a kind of waveguide transmission phase standard device design method comprising the steps of: by work frequency
The corresponding standard waveguide broadside of section and narrow side size, are determined as phase standard device broadside and narrow side size；According to the standard wave
The initial frequency of corresponding frequency band is led, vacuum wavelength is calculated；According to broadside size and vacuum wavelength, channel combine is calculated；According to leading
Interior wavelength, calculating the phase standard device introducing dephased length initial value, the introducing phase shift size is 270 °~300 °
Arbitrary integer；Using broadside size, narrow side size and the length initial value as initial parameter, by the length initial value stepping 1%, meter
Calculate phase standard device phase distribution in working frequency range；Phase change is covered into -180 °~+180 ° corresponding length values,
It is determined as the length of phase standard device.
The embodiment of the present application also provides a kind of waveguide transmission phase standard device, is designed by above-mentioned design method, working frequency range
For 110GHz~170GHz, corresponding standard waveguide is WR-06, and waveguide length is 3.822 millimeters, pin hole and screw hole location with
UG-387 standard flange is corresponding.
At least one above-mentioned technical solution that the embodiment of the present application uses can reach following the utility model has the advantages that by accurately setting
The length for counting phase standard device, substitutes traditional 5cm waveguide segment, and the phase shift for introducing it is covered just within the scope of design frequency
The phenomenon that -180 °~+180 ° of lid is not in the phase multicycle, conducive to the phase measurement of vector network analyzer.Waveguide piece shape
It is the transmission phase standard device simple structure and convenient processing of formula, at low cost, do not need mounting flange, effective raising Length-traceable
Accuracy, improve machining accuracy and phase and calibrate accuracy, to guarantee the reliability of phase theoretical value calculated result.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is a kind of waveguide transmission phase standard device design method flow diagram；
Fig. 2 is a kind of waveguide transmission phase standard device structural schematic diagram；
Fig. 3 is the phase-shift curve schematic diagram that waveguide transmission phase standard device shown in Fig. 2 introduces.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall in the protection scope of this application.
Below in conjunction with attached drawing, the technical scheme provided by various embodiments of the present application will be described in detail.
Fig. 1 is a kind of waveguide transmission phase standard device design method flow diagram provided by the embodiments of the present application.Include
Following steps:
Step 101: by the corresponding standard waveguide broadside of working frequency range and narrow side size, be determined as phase standard device broadside and
Narrow side size.
According to phase standard device working frequency range, corresponding standard waveguide broadside and narrow side size are determined.
The working frequency range of the transmission phase standard device designed as needed, inquires waveguide national standard, obtains design frequency range
The waveguide mouth width side size a of corresponding standard waveguide, narrow side size b.The phase standard device broadside and narrow side ruler for then needing to design
It is very little, the as broadside size a of standard waveguide and narrow side size b.
Step 102: according to the initial frequency of the standard waveguide corresponding frequency band, calculating vacuum wavelength.
For example, the corresponding standard waveguide of the design work frequency range is WR-10, WR-10 corresponding frequency band is 75GHz-
110GHz, then the initial frequency of the standard waveguide corresponding frequency band is just 75GHz, and so on.
Vacuum wavelength is the wavelength of the corresponding electromagnetic wave of the working frequency in a vacuum, and wavelength size is calculated by formula (1):
λ=c/f (1)
In formula:
λ --- vacuum wavelength；
C --- the light velocity；
F --- frequency.
Step 103: according to broadside size and vacuum wavelength, calculating channel combine.
According to vacuum medium wavelength, wavelength in pipe can be calculated by formula (2).
In formula:
λg--- channel combine；
A --- phase standard device waveguide broadside size.
Step 104: according to the channel combine, calculating the phase standard device and introducing dephased length initial value, institute
Stating and introducing phase shift size is 270 °~300 ° arbitrary integers.
Preferably, it is 285 ° that phase shift is introduced when calculating the length initial value.
It is integer that phase standard device, which introduces phase shift in the starting frequency point of working frequency, and size is 270 °~300 ° arbitrary integers
Degree, such as 270 °, 285 °, 296 °, 300 ° etc., according to experimental data and empirical value, it may be selected 285 °.Length initial value can be according to
It is calculated according to formula (3):
Step 105: using broadside size, narrow side size and the length initial value as initial parameter, being walked by the length initial value
Into 1%, phase standard device phase distribution in working frequency range is calculated.
Preferably, phase distribution of the phase standard device in working frequency range is calculated with electromagnetic simulation software.
HFSS can be selected in electromagnetic simulation software.
What broadside the size a, narrow side size b and step 104 determined using electromagnetic simulation software with step 101 was determined
Length initial value l is parameter, calculates phase standard device phase distribution in entire working frequency range.
Step 106: phase change being covered into -180 °~+180 ° corresponding length values, is determined as the length of phase standard device
Degree.
Observe phase standard device phase distribution situation in entire working frequency range, examine its whether cover -180 °~+
180°.If -180 °~+180 ° can be covered, using this value as design result, length initial value l is increased by 1% again if not covering
It is calculated, until its phase covers -180 °~+180 °.
At this point, broadside size, narrow side size and length all determine, waveguide transmission phase standard device parameter designing is completed.
Step 107: right on the phase standard device according to the corresponding standard flange pin of working frequency range and screw position
Position is answered to open up pin hole and screw hole.
According to the working frequency range, pin and screw position on corresponding standard flange and the standard flange are determined.
According to the standard flange pin and screw position, on the phase standard device corresponding position open up pin hole and
Screw hole obtains waveguide transmission phase standard device.
Preferably, the waveguide material is copper surface gold-plating.
For example, the common waveguide flange of the frequency range is UG-387 when working frequency range is 110GHz~170GHz, flange is found accurately
Upper corresponding pin and screw position.IEEE1785 can also be used as common Flange Standard and use.
It is long through waveguide on the phase standard device that design is completed according to pin and screw position on UG-387 standard flange
Degree opens up pin hole and screw hole, is used for connected vector Network Analyzer waveguide port.So far, waveguide transmission phase standard device is set
It counts into.
The design method is mainly used for millimeter wave frequency band, can be used for microwave frequency band.
It should be noted that the waveguide transmission phase standard device of the design is mainly used for examining vector network analyzer.
The present embodiment passes through the length of Exact Design phase standard device, substitutes traditional 5cm waveguide segment, the phase for introducing it
The phenomenon that moving and cover -180 °~+180 ° just within the scope of design frequency, being not in the phase multicycle is conducive to vector network
The phase measurement of analyzer.
Fig. 2 is a kind of waveguide transmission phase standard device structural schematic diagram.It is designed using method as described in Figure 1, working frequency range
For 110GHz~170GHz, corresponding standard waveguide is WR-06, and waveguide length is 3.822 millimeters, pin hole and screw hole location with
UG-387 standard flange is corresponding.Specific design procedure are as follows:
Step 101: being 110GHz~170GHz according to working frequency range, determine that corresponding standard is WR-06, broadside size
For 1.6510mm, narrow side is having a size of 0.8255mm.
Determine waveguide transmission phase standard device waveguide mouth width side size a=1.6510mm, narrow side size b=0.8255mm.
Step 102: being 110GHz according to the frequency range initial frequency, determine vacuum wavelength λ
λ=c/f=2.725mm
Step 103: according to λ=2.725mm, a=1.6510mm, determining channel combine λg
Step 104: calculating working frequency is 110GHz, λg=4.827mm introduces waveguide transmission phase when phase shift is 285 °
The length initial value of standard:
Step 105: using electromagnetic simulation software HFSS, phase shift is introduced to the transmission phase standard device and carries out emulation meter
It calculates, inputs parameter a=1.6510mm, b=0.8255mm, l=3.822mm.
Step 106: obtaining the frequency range through emulation and introduce phase shift figure, as shown in figure 3, -180 °~+180 ° of phase can be covered
Position range, then using this value as design result.
Step 107: working frequency range is 110GHz~170GHz, and corresponding common waveguide flange is UG-387.
According to UG-387 pin and screw position, through hole shown in front elevation position is opened up, wherein the cross in front
Hole is screw hole, and two concentric circle holes are pin hole.
The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art
For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of the claims of this application.
Claims (9)
1. a kind of waveguide transmission phase standard device design method, which is characterized in that comprise the steps of:
By the corresponding standard waveguide broadside of working frequency range and narrow side size, it is determined as phase standard device broadside and narrow side size；
According to the initial frequency of the standard waveguide corresponding frequency band, vacuum wavelength is calculated；
According to broadside size and vacuum wavelength, channel combine is calculated；
According to channel combine, the phase standard device is calculated in the dephased length initial value of introducing, the introducing phase shift size is
270 °~300 ° arbitrary integers；
Using broadside size, narrow side size and the length initial value as initial parameter, by the length initial value stepping 1%, institute is calculated
State phase standard device phase distribution in working frequency range；
Phase change is covered into -180 °~+180 ° corresponding length values, is determined as the length of phase standard device.
2. waveguide transmission phase standard device design method as described in claim 1, which is characterized in that also comprise the steps of, root
According to the corresponding standard flange pin of working frequency range and screw position, on the phase standard device corresponding position open up pin hole and
Screw hole.
3. waveguide transmission phase standard device design method as described in claim 1, which is characterized in that when calculating the length initial value
Introducing phase shift is 285 °.
4. waveguide transmission phase standard device as described in claim 1, which is characterized in that the waveguide material is copper surface gold-plating.
5. the waveguide transmission phase standard device design method as described in Claims 1 to 4 any one, which is characterized in that the side
Method is used for millimeter wave frequency band.
6. the waveguide transmission phase standard device design method as described in Claims 1 to 4 any one, which is characterized in that the side
Method is used for microwave frequency band.
7. any waveguide transmission phase standard device design method as described in Claims 1 to 4 any one, which is characterized in that use
Electromagnetic simulation software calculates phase distribution of the phase standard device in working frequency range.
8. a kind of waveguide transmission phase standard device, which is characterized in that designed by claim 1~7 any one design method, work
Making frequency range is 110GHz~170GHz, and corresponding standard waveguide is WR-06, and waveguide length is 3.822 millimeters.
9. waveguide transmission phase standard device as claimed in claim 8, which is characterized in that the pin hole and screw hole opened up in waveguide
Position, it is corresponding with UG-387 standard flange.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811375098.3A CN109298367B (en) | 2018-11-19 | 2018-11-19 | Waveguide transmission phase etalon and design method |
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| CN201811375098.3A CN109298367B (en) | 2018-11-19 | 2018-11-19 | Waveguide transmission phase etalon and design method |
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