CN106129573A - A kind of New type atom frequency marking microwave cavity - Google Patents
A kind of New type atom frequency marking microwave cavity Download PDFInfo
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- CN106129573A CN106129573A CN201610694090.8A CN201610694090A CN106129573A CN 106129573 A CN106129573 A CN 106129573A CN 201610694090 A CN201610694090 A CN 201610694090A CN 106129573 A CN106129573 A CN 106129573A
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- pole piece
- cylindrical cavity
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- cavity
- bubble
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/06—Cavity resonators
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Abstract
The invention discloses a kind of New type atom frequency marking microwave cavity, including cylindrical cavity and slotted-tube, slotted-tube includes the pole piece being set to one, boss and base, base is arranged on boss one end, pole piece number is the integer more than or equal to 2, pole piece is arranged on the boss other end, base through screws is fixed on cylindrical cavity one end, boss and pole piece are arranged in cylindrical cavity, the outer wall of boss fits tightly with the inwall of cylindrical cavity, optical filtering bubble it is provided with in boss, each pole piece is fitted tightly over absorption bubble and above and is evenly distributed on absorption bubble surrounding, space is left between pole piece and the inwall of cylindrical cavity, heater strip is wrapped in cylindrical cavity outer wall, the cylindrical cavity other end is provided with top cover, light cell it is provided with inside top cover.The present invention compared with prior art, has the following advantages and effect: simple and compact for structure, assembles, debugs easily, and reliability is high, and microwave field direction factor is big, and chamber Q-value is high, and frequency fine tuning is convenient, can be widely applied to high-performance Rb atom frequency marking.
Description
Technical field
The present invention relates to Rb atom frequency marking, be more particularly to a kind of New type atom frequency marking microwave cavity, this novel microwave
The feature that chamber has simple in construction, assembling is easy, reliability is high, is suitable for making high-performance Rb atom frequency marking.
Background technology
Along with the development of society's science and technology, many fields are required for more accurate and stable frequency time signal.Frequency marking skill
Developing rapidly of art so that atomic frequency standard, as a kind of more reliable clock frequency source, progressively instead of traditional mechanical watch
And crystal oscillator clock, play an important role in the fields such as time service, punctual, navigator fix, synchronous communication.Rb atom frequency marking due to
The features such as its combination property is good and volume is little, lightweight, low in energy consumption, it has also become current most widely used atomic frequency standard it
One.Rb atom frequency marking is made up of physical system and Circuits System two parts, and wherein microwave cavity is Rb atom frequency marking department of physics
The core component of system, affects the performance of Rb atom frequency marking to a great extent.
A kind of atomic frequency scale microwave cavity disclosed in this laboratory, by document Ganghua Mei, Miniatured
Microwave cavity for atomic frequencystandard [P] .US Patent:6225870B1,2001 is retouched
State.This chamber is absorbed bubble, heater strip etc. constituted by slotted-tube, dielectric ring, cylindrical cavity, rubidium.Wherein, slotted-tube is a upper end
Opening the metallic cylinder of several equidistant narrow slot, the tiles metal structure between adjacent narrow slot is pole piece.Pole piece can be equivalent to electricity
Sense, narrow slot can be equivalent to electric capacity, pole piece and narrow slot and constitute LC structure, occurs with the microwave signal from the outside feed-in of microwave cavity
Resonance, class TE needed for formation011Mode trickle wave field.Concrete, class TE is discussed011During microwave field distribution under pattern, the resonance in chamber
Inductance and the electric capacity of the main thus LC structure of frequency determine, are namely determined, as opened by every structural parameters of fluting tube chamber
Groove number, groove width, groove depth, pole piece thickness, the thickness of dielectric ring, length etc..The material of dielectric ring is usually dielectric constant more than 1
Nonmetal, it was found that this structure member of dielectric ring suffers from the drawback that 1, the dielectric constant of medium is subject in actual application
The impact of temperature, it may occur that small change, and then cause the irregular change of chamber frequency；2, the thermal coefficient of expansion of medium compares metal
Big, when resonator cavity is in the duty of continuous heating, medium can occur expanded by heating, extrudes fluting intimate contact therewith
Pipe metal pole piece so that it is deform upon, i.e. changes the structural parameters of fluting tube chamber, also can affect chamber frequency；3, rubidium clock permanent worker
In the case of work, the dielectric ring in resonator cavity can occur a certain degree of aging.These factors reduce rubidium clock long-term work
The long-time stability of rubidium clock also can be produced corresponding impact by reliability.
Summary of the invention
It is an object of the invention to provide a kind of New type atom frequency marking microwave cavity, simple for structure, debugging is convenient, reliability
High.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of New type atom frequency marking microwave cavity, including cylindrical cavity, also includes slotted-tube, and slotted-tube includes the pole being set to one
Sheet, boss and base, base is arranged on boss one end, and pole piece number is the integer more than or equal to 2, pole piece be arranged on boss another
End, base through screws is fixed on cylindrical cavity one end, boss and pole piece and is arranged in cylindrical cavity, the outer wall of boss and cylinder
The inwall of cavity fits tightly, and is provided with optical filtering bubble in boss, and each pole piece is fitted tightly over absorption bubble and above and is evenly distributed on
Absorbing bubble surrounding, leave space between pole piece and the inwall of cylindrical cavity, heater strip is wrapped in cylindrical cavity outer wall, cylindrical cavity
The other end is provided with top cover, is provided with light cell inside top cover.
Being provided with step pipe and coupling ring inside top cover as above, step pipe is connected with coupling ring.
Being provided with metal bar on top cover as above, metal bar one end extends to absorb the space between bubble and top cover,
The metal bar other end is connected with the step frequency multiplier circuit module outside cylindrical cavity.
Cylindrical cavity sidewall as above offers screwed hole, is provided with chamber frequency fine setting screw rod in screwed hole, and chamber frequency is micro-
Screw rod one end is adjusted to extend to the space between pole piece and cylindrical cavity inwall.
The present invention compared with prior art, has the following advantages and effect: simple and compact for structure, assembles, debugs easily, can
High by property, microwave field direction factor is big, and chamber Q-value is high, and frequency fine tuning is convenient, can be widely applied to high-performance Rb atom frequency marking.
Accompanying drawing explanation
Fig. 1 is the slotted-tube structural representation of the present invention；
Fig. 2 is that the present invention utilizes magnetic-coupled structural representation；
Fig. 3 is the structural representation that the present invention utilizes electric coupling.
In figure: 1-slotted-tube, 2-cylindrical cavity, 3-top cover, 4-step pipe, 5-coupling ring, 6-light cell, 7-heater strip,
8-rubidium absorbs bubble, 9-rubidium filtering blobs, 10-chamber frequency fine setting screw rod, 11-screw；1a-the first pole piece, 1b-the second pole piece, 1c-the 3rd
Pole piece, 1d-the 4th pole piece, 1e-boss, 1f-base.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in further detail.
Embodiment 1:
According to Fig. 1, Fig. 2, a kind of New type atom frequency marking microwave cavity includes slotted-tube 1, cylindrical cavity 2, top cover 3, step pipe
4, coupling ring 5, light cell 6, heater strip 7, absorption bubble, the bubble that filters, chamber frequency finely tune screw rod 10, screw 11.The present embodiment absorbs
Steeping and absorb bubble 8 for rubidium, the bubble that filters is rubidium filtering blobs 9.Wherein slotted-tube 1 includes the first pole piece 1a, the second pole piece being connected
1b, the 3rd pole piece 1c, the 4th pole piece 1d, boss 1e, base 1f.Base 1f is arranged on boss 1e one end, the first pole piece 1a, second
Pole piece 1b, the 3rd pole piece 1c, the 4th pole piece 1d are uniformly arranged on the boss 1e other end, with screw 11 by base 1f and cylindrical cavity
2 are connected, and are connected with cylindrical cavity 2 by top cover 3.The number forming groove between pole piece (1a, 1b, 1c, 1d) or pole piece can be
Integer more than or equal to 2.Groove equivalently-sized formed between each pole piece (1a, 1b, 1c, 1d), the first pole piece 1a, second
Pole piece 1b, the 3rd pole piece 1c, the 4th pole piece 1d size the most identical.The effect of boss 1e is to make slotted-tube 1 lower end outer wall and circle
The inwall of post cavity 2 keeps close contact, increases the mechanical firmness of resonator cavity.The first pole piece in slotted-tube 1 upper end simultaneously
1a, the second pole piece 1b, between the 3rd pole piece 1c, the 4th pole piece 1d and cylindrical cavity 2 inwall, leave space, create microwave field and deposit
Essential condition.Rubidium all fills appropriate metal rubidium and certain ingredients and the cushion gas of proportioning in absorbing bubble 8 and rubidium filtering blobs 9
Body.Rubidium absorbs bubble 8 close fits and inserts among slotted-tubes 1, is positioned at the first pole piece 1a, the second pole piece 1b, the 3rd pole piece 1c, the quadrupole
Region between sheet 1d, the first pole piece 1a, the second pole piece 1b, the 3rd pole piece 1c, the 4th pole piece 1d are evenly distributed on rubidium and absorb bubble 8
Surrounding, and absorb bubble with rubidium and 8 fit tightly；Rubidium filtering blobs 9 close fit is inserted among the boss 1e of slotted-tube 1.With integrated filter
Light mode is compared, and absorbs bubble and filters and steep separate separation optical filtering design and can realize more preferable filter effect, being conducive to improving former
The signal to noise ratio of sub-frequency discrimination signal, so that Rb atom frequency marking possesses high frequency stability.Heater strip 7 is wrapped in cylindrical cavity 2
Outer wall, is passed through DC current to heat cylindrical cavity 2.The heat slotted-tube base 1f conduction through being connected with cylindrical cavity 2 is to convex
Platform 1e, then conduct to pole piece, and then conduction absorbs bubble 8 to rubidium leakproof fit with it, heats rubidium metal therein, produces
The operation material rubidium vapor atomic of Rb atom frequency marking.This heat produced by heater strip 7 by metal fever road is conducted extremely
Rubidium absorbs the mode of heating of bubble 8, is conducive to improving the efficiency of heating surface, reduces heat power consumption, and it is equal to make rubidium absorb the Temperature Distribution of bubble 8
Even, the performance improving Rb atom frequency marking is good by this.Step pipe 4 compacting is welded in top cover 3 inner surface recesses, and with
Coupling ring 5 closely welds, and is linked to be an entirety, and outside radiofrequency signal is passed through step pipe 4 and coupled after match circuit
Ring 5 is fed in microwave cavity in magnetic-coupled mode, realizes the high order frequency of intracavity simultaneously.Cylindrical cavity 2 sidepiece has screw,
Equipped with chamber frequency fine setting screw rod 10 in hole, its length in the intracavity part of cylindrical cavity 2 can be changed by precession or back-out, with
Realize the fine setting of resonant frequency.Light cell 6 can be gluing in the inner surface of chamber top cover 3 with insulating sticky, is used for detecting rubidium and absorbs in bubble 8
The light absorption signal of rubidium vapor atomic.Slotted-tube 1, cylindrical cavity 2, top cover 3, chamber frequency fine setting screw rod 10 and screw 11 can be with without magnetic
Or low magnetic metal material processing.
Embodiment 2:
According to Fig. 1, Fig. 3, a kind of New type atom frequency marking microwave cavity include slotted-tube 1, cylindrical cavity 2, top cover 3, probe 5,
Light cell 6, heater strip 7, absorption bubble, the bubble that filters, chamber frequency finely tune screw rod 10, screw 11.Wherein slotted-tube 1 includes being connected
First pole piece 1a, the second pole piece 1b, the 3rd pole piece 1c, the 4th pole piece 1d, boss 1e, base 1f.Absorbing bubble in the present embodiment is
Rubidium absorbs bubble 8, and the bubble that filters is rubidium filtering blobs 9.Base 1f is arranged on boss 1e one end, the first pole piece 1a, the second pole piece 1b, the 3rd
Pole piece 1c, the 4th pole piece 1d are uniformly arranged on the boss 1e other end, are connected with cylindrical cavity 2 by base 1f with screw 11, will
Top cover 3 is connected with cylindrical cavity 2.The number of the groove formed between pole piece (1a, 1b, 1c, 1d) or pole piece is greater than or equal to 2
Integer.The groove (1a, 1b, 1c, 1d) of the formation between each pole piece equivalently-sized, each pole piece (1a, 1b, 1c, 1d)
Size is the most identical.The effect of boss 1e is to make slotted-tube 1 lower end outer wall keep close contact with the inwall of cylindrical cavity 2, increases
The mechanical firmness of resonator cavity.Simultaneously the first pole piece 1a in slotted-tube 1 upper end, the second pole piece 1b, the 3rd pole piece 1c, the quadrupole
Leave space between sheet 1d and cylindrical cavity 2 inwall, create the essential condition that microwave field exists.Rubidium absorbs bubble 8 and rubidium filters
Appropriate metal rubidium and certain ingredients and the buffer gas of proportioning is all filled in bubble 9.Rubidium absorb bubble 8 close fits insert slotted-tubes 1 it
In, the first pole piece 1a, the second pole piece 1b, region between the 3rd pole piece 1c, the 4th pole piece 1d, the first pole piece 1a,
Two pole piece 1b, the 3rd pole piece 1c, the 4th pole piece 1d are evenly distributed on rubidium and absorb the surrounding of bubble 8, and closely paste with rubidium absorption bubble 8
Close；Rubidium filtering blobs 9 close fit is inserted among the boss 1e of slotted-tube 1.Compared with integrated filtering mode, absorb bubble and the bubble point that filters
The separation optical filtering design opened can realize more preferable filter effect, is conducive to improving the signal to noise ratio of atom frequency discrimination signal, so that rubidium
Atomic frequency standard possesses high frequency stability.Heater strip 7 is wrapped in cylindrical cavity 2 outer wall, is passed through DC current to heat cylinder
Cavity 2.The heat slotted-tube base 1f through being connected with cylindrical cavity 2 conducts to boss 1e, then conducts to pole piece, and then conduction is extremely
Rubidium leakproof fit with it absorbs bubble 8, heats rubidium metal therein, and the operation material rubidium producing Rb atom frequency marking steams
Gas atom.This heat conduction produced by heater strip 7 by metal fever road absorbs the mode of heating of bubble 8 to rubidium, is conducive to carrying
The high efficiency of heating surface, reduces heat power consumption, and makes rubidium absorb the uniformity of temperature profile of bubble 8, and the performance improving Rb atom frequency marking is by this
It is beneficial to.Different from embodiment 1, in the present embodiment, step pipe is not as a structural member of microwave cavity, and is mounted in
In step frequency multiplier circuit module outside microwave cavity, its microwave signal produced feed-in microwave by the way of probe 5 is with electric coupling
Intracavity.Probe 5 is that to have the ganoid rigid metal of certain diameter and length the most excellent, is fixed on top cover by insulation viscose glue
On 3, and with chamber outside the outfan of step frequency multiplier circuit module closely weld.Cylindrical cavity 2 sidepiece has screw, in hole equipped with
Chamber frequency fine setting screw rod 10, can change its length in the intracavity part of cylindrical cavity 2, to realize resonance by precession or back-out
The fine setting of frequency.Light cell 6 can be gluing in the inner surface of chamber top cover 3 with insulating sticky, is used for detecting rubidium steam in rubidium absorption bubble 8 former
The light absorption signal of son.Slotted-tube 1, cylindrical cavity 2, top cover 3, chamber frequency fine setting screw rod 10 and screw 11 can be with without magnetic or low magnetic gold
Belong to materials processing.
Embodiment described above is only that the purpose of the present invention is done a preferable illustration, is not limiting as this
Bright.Described embodiment, in line with the spirit of this invention and principle, is done suitable by those skilled in the art
When amendment or supplement or use similar method to substitute, should be included within the scope of the present invention.
Claims (4)
1. a New type atom frequency marking microwave cavity, including cylindrical cavity (2), it is characterised in that also include slotted-tube (1), fluting
Pipe (1) includes pole piece, boss (1e) and the base (1f) being set to one, and base (1f) is arranged on boss (1e) one end, pole piece
Number is the integer more than or equal to 2, and pole piece is arranged on boss (1e) other end, and base (1f) is fixed on cylinder by screw (11)
Cavity (2) one end, it is interior that boss (1e) and pole piece are arranged on cylindrical cavity (2), and the outer wall of boss (1e) is interior with cylindrical cavity (2)
Wall fits tightly, and is provided with optical filtering bubble in boss (1e), and each pole piece is fitted tightly over absorption bubble and above and is evenly distributed on absorption
Bubble surrounding, leaves space between the inwall of pole piece and cylindrical cavity (2), heater strip (7) is wrapped in cylindrical cavity (2) outer wall, circle
Post cavity (2) other end is provided with top cover (3), and top cover (3) inner side is provided with light cell (6).
A kind of New type atom frequency marking microwave cavity the most according to claim 1, it is characterised in that described top cover (3) inner side
Being provided with step pipe (4) and coupling ring (5), step pipe (4) is connected with coupling ring (5).
A kind of New type atom frequency marking microwave cavity the most according to claim 1, it is characterised in that set on described top cover (3)
Being equipped with metal bar, metal bar one end extends to absorb the space between bubble and top cover (3), the metal bar other end and cylindrical cavity
(2) outside step frequency multiplier circuit module connects.
4. according to any one New type atom frequency marking microwave cavity described in claim 1 or 2 or 3, it is characterised in that described circle
Post cavity (2) sidewall offers screwed hole, is provided with chamber frequency fine setting screw rod (10), frequency fine setting screw rod (10) one end, chamber in screwed hole
Extend to the space between pole piece and cylindrical cavity (2) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610694090.8A CN106129573B (en) | 2016-08-19 | 2016-08-19 | A kind of New type atom frequency marking microwave cavity |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610694090.8A CN106129573B (en) | 2016-08-19 | 2016-08-19 | A kind of New type atom frequency marking microwave cavity |
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| CN106129573A true CN106129573A (en) | 2016-11-16 |
| CN106129573B CN106129573B (en) | 2019-01-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110504963A (en) * | 2019-08-19 | 2019-11-26 | 中国科学院武汉物理与数学研究所 | A kind of rectangle atomic frequency scale microwave cavity |
| WO2023082125A1 (en) * | 2021-11-11 | 2023-05-19 | 上海华为技术有限公司 | Resonant cavity, rubidium clock and communication apparatus |
| CN116979963A (en) * | 2023-09-25 | 2023-10-31 | 中国科学院精密测量科学与技术创新研究院 | A thickening integrated form bubble body structure for reducing rubidium atomic frequency standard atmospheric pressure influence |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110504963A (en) * | 2019-08-19 | 2019-11-26 | 中国科学院武汉物理与数学研究所 | A kind of rectangle atomic frequency scale microwave cavity |
| WO2023082125A1 (en) * | 2021-11-11 | 2023-05-19 | 上海华为技术有限公司 | Resonant cavity, rubidium clock and communication apparatus |
| CN116979963A (en) * | 2023-09-25 | 2023-10-31 | 中国科学院精密测量科学与技术创新研究院 | A thickening integrated form bubble body structure for reducing rubidium atomic frequency standard atmospheric pressure influence |
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