CN209200124U - A kind of direct current signal and microwave signal synthesizer - Google Patents
A kind of direct current signal and microwave signal synthesizer Download PDFInfo
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- CN209200124U CN209200124U CN201822152430.1U CN201822152430U CN209200124U CN 209200124 U CN209200124 U CN 209200124U CN 201822152430 U CN201822152430 U CN 201822152430U CN 209200124 U CN209200124 U CN 209200124U
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- direct current
- transmission line
- microwave signal
- microwave
- current signal
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Abstract
The utility model discloses a kind of direct current signals and microwave signal synthesizer, belong to signal processing technology field, including substrate, the substrate is equipped with transmission line, the transmission line includes direct current signal transmission line, microwave signal transmission route and direct current microwave signal synthetic line, the output end of the direct current signal transmission line and the output end of microwave signal transmission route simultaneously connect the rear input terminal with the direct current microwave signal synthetic line and connect, the utility model by using a kind of brand new form direct current signal and microwave signal synthesizer, to solve to have in the prior art using commercialization Bias-Tee bring performance, design, the problems such as cost.
Description
Technical field
The utility model belongs to signal processing technology field, especially a kind of direct current signal and microwave signal synthesizer.
Background technique
When manipulating to the quantum bit on Superconducting Quantum chip, direct current signal is needed with microwave signal by same
In a channel feed-in quantum bit, superconductive quantum bit works in the pole low temperature environment of 10mK or so, in feed-in quantum bit
Before, direct current signal and microwave signal need respectively by different low temperature line optimizations, synthesis side commonly used in the prior art
Formula is using commercialization Bias-Tee device, and Bias-Tee Chinese is bias device, is that one kind is not interfering other device premises to divide into
Set the three-terminal network of direct current biasing point.
It is using the problem of Bias-Tee device, commercial Bias-Tee device is using inductance, capacitor even resistance etc.
The mode of base components combination is realizing function, and nominal temperature use scope is minimum also only at -55 DEG C (218.15K) Zuo You,
Compared with the operating temperature 10mK of superconductive quantum bit, temperature difference is too big, under the conditions of extremely low temperature, commercial Bias-Tee performance
Great variety even component failure may occur, simultaneously as in commercialization Bias-Tee different type component used material
Material characteristic be also it is different, different components are even more multifarious at different temperatures, thus influence commercialization Bias-Tee
The factor of energy can also increase；It, at present can only be using design, extremely low temperature in certain temperature range meanwhile in product design process
Under the conditions of the method tested carry out product design, the test repeatedly under practical pole low temperature environment can bring great manpower, object
The consumption of power and financial resources, cost are very big.Component used in commercial Bias-Tee is per se with certain loss of signal, loss
Energy can also be converted to heat and distribute, when power consumption and heat reach certain degree, will change locating for quantum bit
Environment temperature, influence the performance of quantum bit, even resulting in entire chip cannot normally work.
Utility model content
The purpose of the utility model is to provide a kind of direct current signal of brand new form and microwave signal synthesizer, with
Solution is had in the prior art using problems such as commercialization Bias-Tee bring performance, design, costs.
The technical solution adopted in the utility model is as follows:
A kind of direct current signal and microwave signal synthesizer, including substrate, the substrate are equipped with transmission line, the biography
Defeated route includes direct current signal transmission line, microwave signal transmission route and direct current microwave signal synthetic line, the direct current letter
Number output end of transmission line and the output end of microwave signal transmission route and after connecing with the direct current microwave signal synthetic line
Input terminal connection.
Further, the substrate is silicon substrate.
Further, the material of the transmission line is metallic aluminium.
Further, the direct current signal transmission line includes the first coplanar waveguide transmission line.
Further, the direct current signal transmission line further includes the second coplanar waveguide transmission line, the second coplanar wave
Lead one end of transmission line and the input terminal of first coplanar waveguide transmission line and connect, second coplanar waveguide transmission line it is another
One end open circuit.
Further, the microwave signal transmission route includes interdigital capacitor.
Further, the direct current microwave signal synthetic line includes third coplanar waveguide transmission line.
Further, the length of first coplanar waveguide transmission line and the second coplanar waveguide transmission line is signal to be passed through
The a quarter of wavelength, the characteristic impedance of the third coplanar waveguide transmission line are 50 Ω.
Further, the output end of the direct current microwave signal synthetic line is connect with quantum chip.
Compared with prior art, the utility model is by using the side that transmission line is directly directly arranged on the substrate
Formula, the transmission line include the direct current signal transmission line, the microwave signal transmission route and direct current microwave letter
Number synthetic line, the direct current microwave signal after being respectively used to transmission direct current signal, microwave signal and synthesis, avoids using commercial
Bias-Tee bring problems, using the scheme of the utility model embodiment 1, with the advantages of have:
(1) mode that transmission line is set on substrate is directlyed adopt, avoids low temperature caused by using component uncertain
The problem of property；
(2) in Design Stage, since the synthesizer of the utility model does not use component, it is unique it needs to be determined that
It is the low-temperature characteristics of substrate, avoids using a variety of components, also there is no need to be tested verifying repeatedly, saves a large amount of labour
Cost.
(3) due to not using component, component bring excess loss and heat problem are avoided.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of direct current signal and microwave signal synthesizer in the utility model embodiment；
Fig. 2 is a kind of schematic diagram of direct current signal and microwave signal synthesizer in another embodiment of the utility model.
Specific embodiment
The embodiments described below with reference to the accompanying drawings are exemplary, is only used for explaining the utility model, and cannot solve
It is interpreted as limitations of the present invention.
Embodiment 1
In conjunction with attached drawing 1, the utility model embodiment 1 provides a kind of direct current signal and microwave signal synthesizer, including
Substrate 10, the substrate 10 are equipped with transmission line, and the transmission line includes direct current signal transmission line 20, microwave signal biography
Defeated route 30 and direct current microwave signal synthetic line 40, the output end and microwave signal transmission of the direct current signal transmission line 20
The output end of route 30 simultaneously connects the rear input terminal with the direct current microwave signal synthetic line 40 and is electrically connected.
Wherein, the direct current signal transmission line 20 is used for transmission direct current signal, and extraneous direct current signal passes through the direct current
The input terminal of signal transmission line 20 enters in the direct current signal transmission line 20；
Wherein, the microwave signal transmission route 30 is used for transmission microwave signal, and extraneous microwave signal passes through described straight micro-
The input terminal of wave signal transmission line 30 enters in the microwave signal transmission route 30；
Wherein, the direct current microwave signal synthetic line 40 is for synthesizing and transmitting direct current microwave signal, direct current microwave letter
It number is transferred in external device by the output end of direct current microwave signal synthetic line 40, wherein external device is quantum chip.
By using the mode that transmission line is directly directly arranged on the substrate 10, the transmission line includes described
Direct current signal transmission line 20, the microwave signal transmission route 30 and the direct current microwave signal synthetic line 40, are used respectively
Direct current microwave signal after transmission direct current signal, microwave signal and synthesis avoids all using commercialization Bias-Tee bring
More problems, using the scheme of the utility model embodiment 1, with the advantages of have:
(1) mode that transmission line is set on substrate is directlyed adopt, avoids low temperature caused by using component uncertain
The problem of property；
(2) in Design Stage, since the synthesizer of the utility model does not use component, it is unique it needs to be determined that
It is the low-temperature characteristics of substrate, avoids using a variety of components, also there is no need to be tested verifying repeatedly, saves a large amount of labour
Cost.
(3) due to not using component, component bring excess loss and heat problem are avoided.
Wherein, substrate 10 preferably uses silicon substrate, and structural behaviour is all more stable at low temperature for silicon substrate.
Embodiment 2
Further, in conjunction with attached drawing 1, on the basis of embodiment 1, the material of the transmission line is metallic aluminium.
The figure that the transmission line is made of metallic aluminium, at a temperature of extremely low temperature 10mK or so, aluminium is in superconduction
State without resistance, therefore will not generate additional loss of signal and heat.
Embodiment 3
On the basis of embodiment 1, as shown in Fig. 2, further, the direct current signal transmission line 20 includes first
Coplanar waveguide transmission line 21.
First coplanar waveguide transmission line 21 is used for transmission direct current signal, using coplanar wave guide transmission, have low-loss,
It is easy to the advantages of being connected with other elements, and manufacture craft is simple, at low cost.
Further, the direct current signal transmission line 20 further includes the second coplanar waveguide transmission line 22, and described second
The input terminal of 22 line of coplanar wave guide transmission and first coplanar waveguide transmission line 21 simultaneously connects, second coplanar waveguide transmission line
22 output end open circuit.
The open-end of second coplanar waveguide transmission line 22 is for the input terminal of the first coplanar waveguide transmission line 21
Impedance with the port junction of extraneous direct current signal input is in short-circuit condition for microwave signal, and short-circuit condition is using the
Two wavelength coplanar waveguide transmission lines 22 become the open-circuit condition of high impedance, at this point, the direct current signal transmission line 20 for
It is high impedance status for microwave signal, therefore inhibits microwave signal to enter the direct current signal transmission line 21 well
In, to inhibit microwave signal through the influence to ambient enviroment.
Embodiment 4
On the basis of embodiment 3, as shown in Fig. 2, further, the microwave signal transmission route 30 includes interdigital
Capacitor 31, since the interdigital capacitor 31 has " logical exchange, resistance direct current " characteristic, microwave signal can be low-loss by described
Interdigital capacitor 31, while direct current signal being inhibited to enter the direct current signal transmission line 20, to inhibit outside direct current signal
The influence of environment.
Embodiment 5
On the basis of embodiment 4, as shown in Fig. 2, further, including in the direct current microwave signal synthetic line 40
Third coplanar waveguide transmission line 41, the third coplanar waveguide transmission line 41 are used for transmission direct current microwave composite signal, using altogether
Face waveguide transmission, beneficial effect is with embodiment 3, and which is not described herein again.
Embodiment 6
On the basis of embodiment 5, as shown in Fig. 2, in practice when need by the microwave of direct current signal and 13Ghz believe
When number being synthesized, specifically, the length of first coplanar waveguide transmission line 21 and the second coplanar waveguide transmission line 22 is arranged
Frequency is the 1/4 of 13GHz microwave signal wavelength, and the characteristic impedance of the third coplanar waveguide transmission line 41 is set as 50 Ω.
First coplanar waveguide transmission line 21 and the second coplanar waveguide transmission line 22 are that respective frequencies are 13GHz
1/4 wavelength coplanar waveguide transmission line can be very good to inhibit the microwave signal of 13GHz to enter the direct current signal transmission line
In 21, thus effectively inhibit the microwave signal of 13GHz to the influence of ambient enviroment, the third coplanar waveguide transmission line 41
Characteristic impedance is 50 Ω, and the microwave signal for 13GHz is straightway.
The structure, features, and effects of the present invention is described in detail based on the embodiments shown in the drawings, with
Upper described is only the preferred embodiment of the utility model, but the present invention does not limit the scope of implementation as shown in the drawings, it is all according to
Change or equivalent example modified to equivalent change made by conception according to the utility model, still without departing from specification and figure
When showing covered spirit, it should be within the protection scope of the present utility model.
Claims (9)
1. a kind of direct current signal and microwave signal synthesizer, which is characterized in that including substrate, the substrate is equipped with transmission line
Road, the transmission line include direct current signal transmission line, microwave signal transmission route and direct current microwave signal synthetic line, institute
It states the output end of direct current signal transmission line and the output end of microwave signal transmission route and connects the rear and direct current microwave signal
The input terminal of synthetic line connects.
2. direct current signal according to claim 1 and microwave signal synthesizer, which is characterized in that the substrate is silicon substrate
Plate.
3. direct current signal according to claim 1 and microwave signal synthesizer, which is characterized in that the transmission line
Material is metallic aluminium.
4. direct current signal according to claim 1 and microwave signal synthesizer, which is characterized in that the direct current signal passes
Defeated route includes the first coplanar waveguide transmission line.
5. direct current signal according to claim 4 and microwave signal synthesizer, which is characterized in that the direct current signal passes
Defeated route further includes the second coplanar waveguide transmission line, one end of second coplanar waveguide transmission line and first co-planar waveguide
The input terminal of transmission line simultaneously connects, the other end open circuit of second coplanar waveguide transmission line.
6. direct current signal according to claim 5 and microwave signal synthesizer, which is characterized in that the microwave signal passes
Defeated route includes interdigital capacitor.
7. direct current signal according to claim 6 and microwave signal synthesizer, which is characterized in that the direct current microwave letter
Number synthetic line includes third coplanar waveguide transmission line.
8. direct current signal according to claim 7 and microwave signal synthesizer, which is characterized in that the first coplanar wave
The length for leading transmission line and the second coplanar waveguide transmission line is to a quarter by signal wavelength, the third co-planar waveguide
The characteristic impedance of transmission line is 50 Ω.
9. direct current signal according to claim 1 and microwave signal synthesizer, which is characterized in that the direct current microwave letter
The output end of number synthetic line is connect with quantum chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822152430.1U CN209200124U (en) | 2018-12-18 | 2018-12-18 | A kind of direct current signal and microwave signal synthesizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822152430.1U CN209200124U (en) | 2018-12-18 | 2018-12-18 | A kind of direct current signal and microwave signal synthesizer |
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| CN209200124U true CN209200124U (en) | 2019-08-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449552A (en) * | 2018-12-18 | 2019-03-08 | 合肥本源量子计算科技有限责任公司 | A kind of direct current signal and microwave signal synthesizer |
-
2018
- 2018-12-18 CN CN201822152430.1U patent/CN209200124U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449552A (en) * | 2018-12-18 | 2019-03-08 | 合肥本源量子计算科技有限责任公司 | A kind of direct current signal and microwave signal synthesizer |
| CN109449552B (en) * | 2018-12-18 | 2024-05-07 | 本源量子计算科技（合肥）股份有限公司 | DC signal and microwave signal synthesizer |
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