CN103117439A - Hairpin-type magneto-electric double-tunable microwave filter and tuning method thereof - Google Patents
Hairpin-type magneto-electric double-tunable microwave filter and tuning method thereof Download PDFInfo
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- CN103117439A CN103117439A CN2013100334506A CN201310033450A CN103117439A CN 103117439 A CN103117439 A CN 103117439A CN 2013100334506 A CN2013100334506 A CN 2013100334506A CN 201310033450 A CN201310033450 A CN 201310033450A CN 103117439 A CN103117439 A CN 103117439A
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Abstract
The invention discloses a hairpin-type magneto-electric double-tunable microwave filter and a tuning method thereof. The hairpin-type magneto-electric double-tunable microwave filter comprises an aluminum oxide substrate, an electromagnet, a microstrip line, and a magneto-electric laminating material structure. The magneto-electric laminating material structure includes a piezoelectric phase and a ferromagnetic phase from top to bottom. The piezoelectric phase and the ferromagnetic phase are adhered through epoxy resin. Two metal films Ag are plated on the upper and lower surfaces of the piezoelectric phase respectively to form electrodes. The piezoelectric phase is made of Pb-based lanthanum-doped zirconate titanate. The ferromagnetic phase is made of YIG (yttrium iron garnet). The metal microstrip line made on the upper surface of the aluminum oxide substrate by photoetching serves a signal transmission line. The metal microstrip line is hairpin-typed and is in axial symmetry with a lengthwise center line of the substrate as an axis of symmetry. The defects of tuning failure of the traditional filter in operating frequency, failure in precise adjustment of operating frequency and the like are overcome. The hairpin-type magneto-electric double-tunable microwave filter has the advantages of small size and magneto-electric double-tunability. The defects that the traditional magnetically-tunable microwave device is high in operation loss, long in response time and the like are overcome. The hairpin-type magneto-electric double-tunable microwave filter is widely applicable to wireless communication.
Description
Technical field
The present invention relates to a kind of miniaturization adjustable microwave device, particularly two adjustable microwave filter and the control methods thereof of a kind of hair fastener type magnetoelectricity.
Background technology
All the time, the quality of performance of filter affects the performance of wireless communication system to a great extent, and simultaneously, in most of the cases the size of filter is also the important decisive factor of wireless communication terminal size.In recent years, along with fast development and the progress of wireless communication industry, industry has had higher requirement to miniaturization and the multifunction of microwave filter.
The operating frequency of conventional filter is more single, can't regulate its working frequency range, also can't carry out fine adjustment to its working frequency points.In recent years, existing scholar attempts using Ferrite Material to carry out the design of filter, and principle is mainly to utilize the relatively high dielectric constant of ferrite medium effectively to reduce the size of microwave filter; Simultaneously because the ferrite medium is biased under the condition in magnetic field outside, the ferromagnetic resonance effect can occur, thereby the variation of energy in transmission line has been produced impact, thus affected the original performance of filter, therefore can add the operating frequency that bias magnetic field is regulated microwave filter by change.But because the coil that is used for applying bias magnetic field has limitation, the adjustable microstrip filter of this magnetic exists that device loss is large, the response time long, can produce the shortcomings such as huge noise, bigger error during work.Generally speaking, existing filter ubiquity working frequency range is non-adjustable or the adjustable working frequency band is single, loss is large, the deficiency such as fine adjustment in can't realizing among a small circle.
Summary of the invention
The objective of the invention is to overcome the defective of prior art, provide a kind of hair fastener type magnetoelectricity two adjustable microwave filters.
The two adjustable microwave filters of a kind of hair fastener type magnetoelectricity comprise magnetoelectricity laminate structure, alumina substrate; Magnetoelectricity laminate structure is respectively from top to bottom piezoelectric phase, ferromagnetic phase, and piezoelectric phase and ferromagnetic mutually by epoxy resin bonding is coated with respectively the layer of metal film on two surfaces up and down at piezoelectric phase; The upper surface of alumina substrate is provided with the metal micro-strip line of making by the photoetching corrosion method, this metal micro-strip line is used as signal transmssion line, metal micro-strip line comprises the little band of input port, the little band of output port, and the metal micro-strip of the U-shaped in the middle of input port and output port, inverted U-shaped and U-shaped, have the gap between 3 U-shapeds, consist of the hair fastener type; Magnetoelectricity laminate structure (1) is positioned at the centre of alumina substrate, with the two close inverted U-shaped arm phase pressings of 2 inverted U-shaped arms and two other U-shaped of metal micro-strip line.
Described magnetoelectricity laminate structure ferromagnetic mutually for being grown in the suprabasil yttrium iron garnet YIG film of GGG, piezoelectric phase is lead zirconate titanate PZT.
Described metallic film is silver-colored film.
Apply external voltage by described metallic film.
The control method of the two adjustable microwave filters of a kind of described hair fastener type magnetoelectricity, when electromagnet applies external bias magnetic field to described filter, the ferromagnetic resonance effect occurs in ferromagnetic meeting, absorb energy from the metal micro-strip line of signal transmission, cause the service behaviour of described filter to change; Distance between size by electric current on regulating magnet and N, the S utmost point can change the intensity that is applied to filter upper offset magnetic field, thereby realizes the coarse adjustment to different operating frequency ranges or the frequency G hertz order of magnitude; Apply external voltage on the metallic film on two surfaces of piezoelectric phase, by the capacity effect between two metallic films, produce uniform electric field on the piezoelectric phase of magnetoelectricity laminate structures, by described electric field, thereby cause piezoelectric phase to produce deformation and affect ferromagnetic phase deformation, be about to its impact equivalence that produces for applying mutually a magnetic field to ferromagnetic, the intensity that changes so extra electric field can realize that the filter operating frequency is at the fine adjustment of the megahertz order of magnitude; By changing the positive negative direction of voltage, can realize the left and right skew of described filter operating frequency.
Compared with prior art, the invention has the beneficial effects as follows:
At first due to the magnetoelectricity laminate exist high-k (
10) and high magnetic permeability (
10) advantage, can realize the miniaturization of filter.Moreover the distance between the size by the electric current on regulating magnet and N, the S utmost point can change the intensity that is applied to magnetoelectricity laminate upper offset magnetic field, realizes the coarse adjustment to the microwave filter operating frequency.Can realize the fine adjustment of operating frequency in tens megahertzes by the external voltage that change is applied on the surface metal film of two of piezoelectric phase up and down.By changing the positive negative direction of voltage, can realize the left and right skew at stopband peak, and for different piezoelectrics, due to the characteristic of itself, direction and the side-play amount of performance of filter skew can there are differences also.The independence of working between flux control and electric field adjusting can the phase mutual interference.The present invention has overcome that traditional microwave device working frequency range is non-adjustable or the adjustable working frequency band is single, can't be in little band limits the shortcoming such as fine adjustment, be fit to the adjustable application in radio communication.Simultaneously, due to the two tunable characteristics of its magnetoelectricity, when this design has overcome traditional magnetic adjustable microwave device work, loss is large, the shortcomings such as the response time is long will be in the mobile communication of China, satellite communication, Medical Instruments, the arms remote control, there is very large application prospect in the fields such as safety system and Bluetooth technology.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the vertical view of the two adjustable microwave filters of hair fastener type magnetoelectricity.
Fig. 2 is the stereogram of the two adjustable microwave filters of hair fastener type magnetoelectricity.
Fig. 3 is the vertical view of traditional hair fastener type microstripline filter.
Fig. 4 is the performance map of traditional hair fastener type microstripline filter.
Fig. 5 is the structural representation of magnetoelectricity laminate structure in the two adjustable microwave filters of hair fastener type magnetoelectricity.
Fig. 6 is the magnetic adjustability schematic diagram of working frequency points of the present invention in the 2.6GHz-3.5GHz frequency range.
Fig. 7 is the electric adjustability schematic diagram of working frequency points of the present invention in the 2.96GHz-3.10GHz frequency range.
In figure, 1, magnetoelectricity laminate structure, 2, metal micro-strip line, 3, alumina substrate, 4, electromagnet, 11, metallic film, 12, piezoelectric phase, 13, ferromagnetic phase, 14, the GGG substrate.
Embodiment
As shown in Figure 1, 2, the two adjustable microwave filters of a kind of hair fastener type magnetoelectricity comprise magnetoelectricity laminate structure 1, alumina substrate 3; As shown in Figure 5, magnetoelectricity laminate structure 1 is respectively from top to bottom piezoelectric phase 12, ferromagnetic phase 13, and piezoelectric phase 12 mutually 13 by epoxy resin bonding, up and down two surfaces on respectively is coated with layer of metal film 11 at piezoelectric phase 12 with ferromagnetic; The upper surface of alumina substrate 3 is provided with the metal micro-strip line 2 of making by the photoetching corrosion method, this metal micro-strip line 2 is used as signal transmssion line, metal micro-strip line 2 comprises the little band of input port, the little band of output port, and the metal micro-strip of the U-shaped in the middle of input port and output port, inverted U-shaped and U-shaped, have the gap between 3 U-shapeds, consist of the hair fastener type; Magnetoelectricity laminate structure 1 is positioned at the centre of alumina substrate 3, with the two close inverted U-shaped arm phase pressings of 2 inverted U-shaped arms and two other U-shaped of metal micro-strip line 2.The two tunable filters of magnetoelectricity are applied magnetic field,, the below places respectively N, the S utmost point of electromagnet 4 thereon.
Described metallic film 11 is silver-colored film.
Described piezoelectric phase 12 is lead zirconate titanate PZT, and ferromagnetic phase 12 is yttrium iron garnet YIG, is grown in GGG substrate 14.
Described metallic film 11 is in applying external voltage.
The control method of a kind of hair fastener type magnetoelectricity pair adjustable microstrip filter, when the described filter of electromagnet 4 applies external bias magnetic field, the ferromagnetic resonance effect can occur in ferromagnetic phase 13, thereby can absorb energy from the microstrip line of signal transmission in the certain frequency scope or under a certain frequency, cause the service behaviour of described filter to change; The distance that is applied to by adjusting between the size of electric current of electromagnet 4 and N, the S utmost point can change the intensity that is applied to filter upper offset magnetic field, realizes the coarse adjustment to the G hertz order of magnitude of different operating frequency ranges or frequency; Apply external voltage on the metallic film 11 on two surfaces on piezoelectric phase 12, by the capacity effect between two metallic films 11, can produce uniform electric field on the piezoelectric phase 12 of magnetoelectricity laminate structures, by described electric field, thereby can make piezoelectric phase produce deformation and affect ferromagnetic phase deformation, be about to its impact equivalence that produces for applying mutually a magnetic field to ferromagnetic, the intensity that changes so extra electric field can realize that the filter operating frequency is at the fine adjustment of the megahertz order of magnitude; By changing the positive negative direction of voltage, can realize the left and right skew of described filter operating frequency.
As shown in Figure 1, at the upper surface of alumina substrate 1, by photoetching corrosion legal system preparation card type metal micro-strip line, its center line with the base length direction is symmetrical.The magnetoelectricity laminate structures 1 that shows as Fig. 2 and Fig. 5 be by epoxy resin with same size ferromagnetic mutually 13 and piezoelectric phase 12 be bonded together resulting; Simultaneously, plate respectively layer of metal film 11 for applying the electrode of external voltage on two surfaces up and down of piezoelectric phase, its material is selected silver usually.Two sides up and down that the N of electromagnet 4, S the two poles of the earth are positioned over respectively filter are used for applying external bias magnetic field.
Embodiment
Tradition hair fastener type microstripline filter as shown in Figure 3, size is larger, its performance map as shown in Figure 4, be the single-pass band filter of a 2.955GHz-2.965GHz, and its free transmission range is immutable.
The two adjustable microwave filters of the hair fastener type magnetoelectricity here as shown in Figure 1, 2, the alumina substrate of employing is of a size of 11.426mm * 6.0mm * 1.0mm.Ferromagnetic layer in the magnetoelectricity laminate structures and piezoelectric layer are selected respectively YIG and PZT bi-material.Wherein the YIG layer is of a size of 6.4mm * 2.0mm * 0.015mm, is grown on the GGG layer that is of a size of 6.4mm * 2.0mm * 0.2mm, and PZT is of a size of 6.4mm * 2.0mm * 0.5mm, passes through epoxy resin bonding between two-layer.Simultaneously, plate respectively one deck silver film on two surfaces up and down of PZT layer, silver-colored film is of a size of: 6.4mm * 2.0mm * 0.005mm.At the upper surface of alumina substrate, by the standby metal micro-strip line that is the hair fastener type of photoetching corrosion legal system, be used as the transmission line of signal.
During the two adjustable microwave filter work of hair fastener type magnetoelectricity, the input port input of microwave signal from Fig. 1, performance curve when we intercept filter and are operated in the 3GHz frequency range is studied as can be known: the magnetic adjustability signal as filter is shown in Figure 6, by applying the magnetic field of varying strength, the performance curve of described filter has produced drift, its insertion loss maximum can reach-23dB, and bandwidth of rejection is about 25MHz, has realized in the 2.6GHz-3.5GHz scope coarse adjustment to the filter working frequency range; Due to apply electric field on filter carry out electricity transfer the impact produce can equivalence for it has been applied the effect in magnetic field, but the movement tendency when therefore its performance increases and decreases with electric field strength should be roughly the same with the magnetic timing, filter electricity adjustability schematic diagram as shown in Figure 7, by changing intensity and the direction of extra electric field, the performance curve of filter has also produced drift, and its insertion loss maximum also can reach-23dB, has realized in the 2.95GHz-3.10GHz scope accurate adjustment to the filter working frequency range.
Claims (5)
1. the two adjustable microwave filters of hair fastener type magnetoelectricity, is characterized in that, it comprises magnetoelectricity laminate structure (1), alumina substrate (3); Magnetoelectricity laminate structure (1) is respectively from top to bottom piezoelectric phase (12), ferromagnetic phase (13), piezoelectric phase (12) and ferromagnetic (13) mutually are by epoxy resin bonding, are coated with respectively layer of metal film (11) on two surfaces up and down at piezoelectric phase (12); The upper surface of alumina substrate (3) is provided with the metal micro-strip line (2) of making by the photoetching corrosion method, this metal micro-strip line (2) is used as signal transmssion line, metal micro-strip line (2) comprises the little band of input port, the little band of output port, and the metal micro-strip of the U-shaped in the middle of input port and output port, inverted U-shaped and U-shaped, have the gap between 3 U-shapeds, consist of the hair fastener type; Magnetoelectricity laminate structure (1) is positioned at the centre of alumina substrate (3), with the two close inverted U-shaped arm phase pressings of 2 inverted U-shaped arms and two other U-shaped of metal micro-strip line (2).
2. two adjustable microwave filters of hair fastener type magnetoelectricity according to claim 1, it is characterized in that, the ferromagnetic phase (13) of described magnetoelectricity laminate structure (1) is for being grown in the yttrium iron garnet YIG film in GGG substrate (14), and piezoelectric phase (12) is lead zirconate titanate PZT.
3. the two adjustable microwave filters of hair fastener type magnetoelectricity according to claim 1, is characterized in that, described metallic film (11) is silver-colored film.
4. the two adjustable microwave filters of hair fastener type magnetoelectricity according to claim 1, is characterized in that, applies external voltage by described metallic film (11).
5. the control method of the two adjustable microwave filters of a hair fastener type magnetoelectricity according to claim 1, it is characterized in that, when electromagnet (4) applies external bias magnetic field to described filter, the ferromagnetic resonance effect can occur in ferromagnetic phase (13), absorb energy from the metal micro-strip line (2) of signal transmission, cause the service behaviour of described filter to change; Distance between size by the upper electric current of regulating magnet (4) and N, the S utmost point changes the intensity that is applied to filter upper offset magnetic field, thereby realizes the coarse adjustment to different operating frequency ranges or the frequency G hertz order of magnitude; Apply external voltage on the metallic film (11) on (12) two surfaces of piezoelectric phase, by the capacity effect between two metallic films (11), the uniform electric field of the upper generation of the piezoelectric phase (12) of magnetoelectricity laminate structures (1), by described electric field, thereby cause piezoelectric phase to produce deformation and affect ferromagnetic phase deformation, be about to its impact equivalence that produces for applying mutually a magnetic field to ferromagnetic, the intensity that changes so extra electric field can realize that filter work frequently
Rate is at the fine adjustment of the megahertz order of magnitude; By changing the positive negative direction of voltage, can realize the left and right skew of described filter operating frequency.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647124A (en) * | 2013-11-28 | 2014-03-19 | 宝电电子(张家港)有限公司 | A filter |
| CN103715486A (en) * | 2014-01-06 | 2014-04-09 | 中国计量学院 | Symmetrical function-optional spatially parallel coupling magnetoelectricity-adjustable microwave filter and method |
| CN108091975A (en) * | 2017-12-12 | 2018-05-29 | 广东曼克维通信科技有限公司 | Wave filter and its integrated form magnetic turnable resonator device |
| RU2666968C1 (en) * | 2017-12-12 | 2018-09-13 | Федеральное государственное бюджетное учреждение науки Институт радиотехники и электроники им. В.А. Котельникова Российской академии наук | Frequency filter of uhf signal on magnetic waves |
| RU2707756C1 (en) * | 2019-04-10 | 2019-11-29 | Федеральное государственное бюджетное учреждение науки Институт радиотехники и электроники им. В.А. Котельникова Российской академии наук | Controlled by electric field power divider on magnetostatic waves with filtration function |
| CN110783669A (en) * | 2019-10-22 | 2020-02-11 | 四川大学 | High-isolation filter based on conductive material and ferrite and preparation method thereof |
| RU2754086C1 (en) * | 2020-12-23 | 2021-08-26 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский национальный исследовательский государственный университет имени Н.Г. Чернышевского" | Filter-demultiplexer of microwave signal |
| CN113540717A (en) * | 2021-09-15 | 2021-10-22 | 成都威频科技有限公司 | Adjustable band-pass filter |
| RU2813745C1 (en) * | 2023-11-02 | 2024-02-16 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский национальный исследовательский государственный университет имени Н.Г. Чернышевского" | Controlled space-frequency filter of microwave signal on spin waves |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647124A (en) * | 2013-11-28 | 2014-03-19 | 宝电电子(张家港)有限公司 | A filter |
| CN103715486A (en) * | 2014-01-06 | 2014-04-09 | 中国计量学院 | Symmetrical function-optional spatially parallel coupling magnetoelectricity-adjustable microwave filter and method |
| CN103715486B (en) * | 2014-01-06 | 2016-01-20 | 中国计量学院 | Symmetric form function alternative spatial magnetoelectricity-amicrowave microwave filter and method |
| CN108091975A (en) * | 2017-12-12 | 2018-05-29 | 广东曼克维通信科技有限公司 | Wave filter and its integrated form magnetic turnable resonator device |
| RU2666968C1 (en) * | 2017-12-12 | 2018-09-13 | Федеральное государственное бюджетное учреждение науки Институт радиотехники и электроники им. В.А. Котельникова Российской академии наук | Frequency filter of uhf signal on magnetic waves |
| CN108091975B (en) * | 2017-12-12 | 2020-03-31 | 广东曼克维通信科技有限公司 | Filter and integrated magnetically adjustable resonance device thereof |
| RU2707756C1 (en) * | 2019-04-10 | 2019-11-29 | Федеральное государственное бюджетное учреждение науки Институт радиотехники и электроники им. В.А. Котельникова Российской академии наук | Controlled by electric field power divider on magnetostatic waves with filtration function |
| CN110783669A (en) * | 2019-10-22 | 2020-02-11 | 四川大学 | High-isolation filter based on conductive material and ferrite and preparation method thereof |
| RU2754086C1 (en) * | 2020-12-23 | 2021-08-26 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский национальный исследовательский государственный университет имени Н.Г. Чернышевского" | Filter-demultiplexer of microwave signal |
| CN113540717A (en) * | 2021-09-15 | 2021-10-22 | 成都威频科技有限公司 | Adjustable band-pass filter |
| CN113540717B (en) * | 2021-09-15 | 2021-12-03 | 成都威频科技有限公司 | Adjustable band-pass filter |
| RU2813745C1 (en) * | 2023-11-02 | 2024-02-16 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский национальный исследовательский государственный университет имени Н.Г. Чернышевского" | Controlled space-frequency filter of microwave signal on spin waves |
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Application publication date: 20130522 |