CN203690461U - Symmetric function optional space parallel coupled electromagnetic tunable microwave filter - Google Patents
Symmetric function optional space parallel coupled electromagnetic tunable microwave filter Download PDFInfo
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- CN203690461U CN203690461U CN201420005659.1U CN201420005659U CN203690461U CN 203690461 U CN203690461 U CN 203690461U CN 201420005659 U CN201420005659 U CN 201420005659U CN 203690461 U CN203690461 U CN 203690461U
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Abstract
The utility model discloses a symmetric function optional space parallel coupled electromagnetic tunable microwave filter. Two ends of a GGG substrate are connected with two ends of another GGG substrate through piezoelectric phase respectively. Ferromagnetic phase films grow on the GGG substrates, a metal microstrip line is made at the middle part of the upper surface of each ferromagnetic phase film by using film plating technology, and the two GGG substrates are in parallel and opposite layout. Metal films are respectively plated at the upper and lower surfaces of the piezoelectric phase. The two metal microstrip lines are provided with four ports, one port at one side is an input port, and two ports at the other side are output ports. According to the symmetric function optional space parallel coupled electromagnetic tunable microwave filter, disadvantages that a traditional filter is not adjustable in a working frequency band and a traditional magnetic tunable microwave device has large loss and long response time are overcome, functional selectivity of bandpass and bandstop is added by using multiple ports on the above basis, a characteristic of single performance of the bandpass and the bandstop in the use of the device is overcome, and the filter can be more widely and flexibly applied to the wireless communication.
Description
Technical field
The utility model relates to a kind of miniaturization magnetoelectricity adjustable microwave filter with two kinds of independent performances, particularly the optional space parallel of a kind of symmetric form function coupling magnetoelectricity adjustable microwave filter.
background technology
Along with fast development and the progress of wireless communication industry, miniaturization and the multifunction of industry to microwave filter had higher requirement.
In recent years, introduce piezoelectric, carry out the design of filter in conjunction with Ferrite Material, not only can realize the miniaturization of device, thereby can also realize the multifunction of device by regulating applied magnetic and electric fields to change device working frequency range, thereby become the focus of new device design.Utilize dielectric constant that ferrite medium is relatively high can effectively reduce the size of microwave filter; Utilize ferrite medium to be biased outside under the condition in magnetic field, ferromagnetic resonance effect can occur, the variation of energy in transmission line is exerted an influence, thereby affect the flexibility that the feature of the original performance of filter can improve device effectively; Simultaneously, thereby because can producing deformation under electric field action, piezoelectric affects connected ferromagnetic phase film deformation, the impact producing by it is equivalent to ferromagnetic phase film is applied to a magnetic field, and the intensity that changes so extra electric field can realize the drift of filter working frequency range.But existing filter, filtering performance is generally single, and when device moulding, its filtering performance is also just fixing, has no idea to apply more neatly in practice.
Utility model content
The purpose of this utility model is that to overcome conventional microwave filters filtering performance single, and the optional space parallel coupling of symmetric form function magnetoelectricity adjustable microwave filter is provided.
Symmetric form function washability space parallel coupling magnetoelectricity adjustable microwave filter, it comprises two piezoelectric phases, two ferromagnetic phase films, two GGG substrates and two strip metal microstrip lines;
The two ends of GGG substrate are connected with the two ends of another one GGG substrate by piezoelectric phase respectively, in described GGG substrate, growth has ferromagnetic phase film, adopt coating technique in the middle of the upper surface of ferromagnetic phase film, to make metal micro-strip line, two described parallel positioned opposite of GGG substrate; Two surfaces up and down of described piezoelectric phase are coated with respectively metallic film; Two described strip metal microstrip lines have four ports, and wherein a side port is input port, and two ports of an other side are output port.
Described piezoelectric phase, bonding with ferromagnetic phase film by epoxide-resin glue.
Described metallic film is silverskin, and piezoelectric phase adopts PZT material, and ferromagnetic phase film adopts YIG film material.
In the time being chosen in two ports in same metal micro-strip line respectively as input, output, described magnetoelectricity adjustable microwave filter has is with resistive energy; In the time selecting the conduct input respectively of two ports in same metal micro-strip line, output, described magnetoelectricity adjustable microwave filter has band general character energy.
Compared with prior art, the beneficial effects of the utility model are:
First the utility model has adopted piezoelectric phase PZT and ferromagnetic phase film YIG, there is the advantage of high-k and high magnetic permeability, and the utility model has adopted GGG substrate that ferromagnetic phase film YIG the grows substrate as filter, simplifies the structure, and is of value to the miniaturization that realizes filter.The utility model is chosen different ports can make filter produce band resistance and the logical different filtering performance of band, and the intensity of the bias magnetic field applying by adjusting, realizes the coarse adjustment to microwave filter operating frequency.Be applied to external voltage on upper and lower two the surface metal films of piezoelectric phase and can realize the fine adjustment of operating frequency by change.Between the filtering performance that selection different port produces, and the independence of working between flux control and electric field adjusting, can phase mutual interference.The utility model has not only overcome the shortcoming that traditional microwave device working frequency range is non-adjustable or adjustable working frequency band is single, when the work of tradition magnetic adjustable microwave device, loss is large, the shortcomings such as the response time is long, and the shortcoming such as traditional magnetoelectricity tunable filter performance is single, realizing on the basis of magnetic electric field-tunable working frequency range, the filter of band resistance and the logical two kinds of performances of band is integrated, flexibility and the multi-functional availability of device are improved, be more suitable for the application about the adjustable aspect of frequency range in radio communication, there is very large novelty, there is very large application prospect in the field such as movement and satellite communication in China.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the optional space parallel coupling of symmetric form function magnetoelectricity adjustable microwave filter construction schematic diagram;
Fig. 2 is the optional space parallel coupling of symmetric form function magnetoelectricity adjustable microwave filter cutaway view;
Fig. 3 is the magnetic field tunable performance figure under the resistive energy of the optional space parallel coupling magnetoelectricity adjustable microwave filter band of symmetric form function;
Fig. 4 is the electric field tunable performance figure under the resistive energy of the optional space parallel coupling magnetoelectricity adjustable microwave filter band of symmetric form function;
Fig. 5 be the optional space parallel of the symmetric form function coupling magnetoelectricity adjustable microwave filter band general character can under magnetic field tunable performance figure;
Fig. 6 be the optional space parallel of the symmetric form function coupling magnetoelectricity adjustable microwave filter band general character can under electric field tunable performance figure;
In figure, metallic film 1, piezoelectric phase 2, ferromagnetic phase film 3, GGG substrate 4, metal micro-strip line 5.
Embodiment
As shown in Figure 1, 2, the optional space parallel coupling of a kind of symmetric form function magnetoelectricity adjustable microwave filter, it comprises 2,2 ferromagnetic phase films 3 of 2 piezoelectric phases, GGG substrate 4 and metal micro-strip line 5; The two ends of GGG substrate 4 are connected with the two ends of another one GGG substrate 4 by piezoelectric phase 2 respectively, in described GGG substrate 4, growth has ferromagnetic phase film 3, adopt coating technique in the middle of the upper surface of ferromagnetic phase film 3, to make metal micro-strip line 5, two described parallel positioned opposite of GGG substrate 4; Two surfaces up and down of described piezoelectric phase 2 are coated with respectively metallic film 1; 2 described strip metal microstrip lines 5 have 4 ports, and wherein a side port is input port, and 2 ports of an other side are output port.Total is symmetrical with the center line of base length direction.
Described piezoelectric phase 2, bonding with ferromagnetic phase film 3 by epoxide-resin glue.
Described metallic film 1 is silverskin, and piezoelectric phase 2 adopts PZT material, and ferromagnetic phase film 3 adopts YIG film material.
In the time being chosen in two ports in same metal micro-strip line 5 respectively as input, output, described magnetoelectricity adjustable microwave filter has is with resistive energy; In the time selecting the conduct input respectively of two ports in same metal micro-strip line 5, output, described magnetoelectricity adjustable microwave filter has band general character energy.
A kind of function of symmetric form function washability space parallel coupling magnetoelectricity adjustable microwave filter is selected and magnetoelectricity control method, while applying external bias magnetic field to described magnetoelectricity adjustable microwave filter, can there is ferromagnetic resonance effect in ferromagnetic phase film 3, when two ports conduct input being respectively chosen on same microstrip line, when output, ferromagnetic phase film 3 absorbs energy from the metal micro-strip line 5 at port place, a certain band energy is absorbed thereby device has and is with resistive energy, and when two ports conduct input being respectively chosen on different microstrip lines, when output, ferromagnetic phase film 3 absorbs the energy of a certain frequency range from the metal micro-strip line 5 at input place, energy is coupled and exports this frequency band signals with the metal micro-strip line 5 at output place by ferromagnetic phase film 3 and piezoelectric phase 2, so filter has band general character energy, by regulating the intensity of bias magnetic field, thereby realize the coarse adjustment to different operating frequency ranges or the frequency G hertz order of magnitude, on 2 two surperficial metallic films 1 of piezoelectric phase, apply external voltage, by the capacity effect between two metallic films 1, produce uniform electric field, by described electric field, thereby cause piezoelectric phase 2 to produce deformation and affect ferromagnetic phase film 3 deformation, the impact that is about to produce is equivalent to ferromagnetic phase film 3 is applied to a magnetic field, and the intensity that changes so extra electric field can realize the fine adjustment of filter operating frequency at 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.
Embodiment
As shown in Figure 1, 2, the GGG substrate of employing is of a size of 3mm × 6mm × 0.4mm to symmetric form function washability space parallel coupling magnetoelectricity adjustable microwave filter, and its epontic YIG layer is of a size of 2.5mm × 6mm × 0.1mm.Piezoelectric phase and ferromagnetic phase film are selected respectively PZT and YIG bi-material, and PZT is of a size of 0.5275mm × 3mm × 0.1mm, pass through epoxy resin bonding between two-layer.Meanwhile, plate respectively one deck silver film on two surfaces up and down of PZT layer, silver-colored film is of a size of: 0.5275mm × 3mm × 0.05mm.The centre of the YIG film upper surface on GGG, by adopting coating technique making metal micro-strip line and be used as the transmission line of signal.
When the work of symmetric form function washability space parallel coupling magnetoelectricity adjustable microwave filter, example as shown in Figure 1, microwave signal is inputted from port one.When choosing with the port 2 of port one on same bar microstrip line as output, the tunability of filter described in the utility model under magnetic field be as shown in Figure 3: present-5dB of filter bandwidth is about the resistive energy of being with of 130MHz, all can reach-18dB of its insertion loss maximum left and right; By applying respectively magnetic field H=1500Oe, H=1600Oe, the H=1700Oe of three varying strengths, Stopband Performance curve has produced drift, the change of every 100Oe externally-applied magnetic field causes the working frequency range nearly 77MHz ~ 92MHz that drifts about, and has realized the coarse adjustment to filter band resistance working frequency range.Filter is carried out to electricity adjust the impact that produces can be equivalent to the effect that it has been applied to magnetic field owing to applying electric field, therefore movement tendency when its performance increases and decreases with electric field strength should be can timing roughly the same with magnetic, tunability schematic diagram under electric field is as shown in Figure 4: keep 1650Oe size constant, change intensity and the direction of extra electric field, present-5dB of filter bandwidth is about 135MHz and is with resistive energy, and also can reach-17dB of its insertion loss maximum left and right; By changing intensity and the direction of extra electric field, the band resistance working frequency range of filter has produced drift near corresponding frequency range in the time applying 1650Oe magnetic field, the change of every 5kV/cm electric field makes the working frequency range about 45MHz ~ 50MHz that drifts about, and has realized the accurate adjustment to filter band resistance working frequency range.When choosing from port one the port 3 on different microstrip lines as output, along with the variation of externally-applied magnetic field, the service behaviour of filter and changing as shown in Figure 5: signal is exported from port 3, and present-5dB of filter bandwidth is about the band general character energy of 525MHz ~ 625MHz left and right; When applying magnetic field H=1000Oe, H=1100Oe, the H=1200Oe of three varying strengths, performance curve can produce drift with changes of magnetic field, the change of every 100Oe externally-applied magnetic field causes working frequency range to move about 225MHz ~ 250MHz, has realized the coarse adjustment of passband working frequency range; Under electric field adjusting, as shown in Figure 6: keep externally-applied magnetic field 1150Oe size constant, present-5dB of filter bandwidth is about the band general character energy of 555MHz ~ 600MHz left and right; The intensity of extra electric field and direction change, the band resistance working frequency range of filter has produced drift near corresponding frequency range in the time applying 1150Oe magnetic field, the change of every 5kV/cm electric field regulates working frequency range to be offset about 123MHz, has realized the accurate adjustment to the logical working frequency range of filter band.
Claims (3)
1. the optional space parallel of a symmetric form function coupling magnetoelectricity adjustable microwave filter, is characterized in that, it comprises two piezoelectric phases, two ferromagnetic phase films, two GGG substrates and two strip metal microstrip lines;
The two ends of GGG substrate are connected with the two ends of another one GGG substrate by piezoelectric phase respectively, in described GGG substrate, growth has ferromagnetic phase film, adopt coating technique in the middle of the upper surface of ferromagnetic film film, to make metal micro-strip line, two described parallel positioned opposite of GGG substrate; Two surfaces up and down of described piezoelectric phase are coated with respectively metallic film; Two described strip metal microstrip lines have four ports, and wherein a side port is input port, and two ports of an other side are output port.
2. microwave filter according to claim 1, is characterized in that, described piezoelectric phase is bonding with ferromagnetic phase film by epoxide-resin glue.
3. microwave filter according to claim 1, is characterized in that, described metallic film is silverskin, and piezoelectric phase adopts PZT material, and ferromagnetic phase film adopts YIG film material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420005659.1U CN203690461U (en) | 2014-01-06 | 2014-01-06 | Symmetric function optional space parallel coupled electromagnetic tunable microwave filter |
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| CN201420005659.1U CN203690461U (en) | 2014-01-06 | 2014-01-06 | Symmetric function optional space parallel coupled electromagnetic tunable microwave filter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| RU2745541C1 (en) * | 2020-08-06 | 2021-03-26 | Федеральное государственное бюджетное учреждение науки Институт радиотехники и электроники им. В.А. Котельникова Российской академии наук | Electric field-controlled functional element of magnonics |
-
2014
- 2014-01-06 CN CN201420005659.1U patent/CN203690461U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| RU2745541C1 (en) * | 2020-08-06 | 2021-03-26 | Федеральное государственное бюджетное учреждение науки Институт радиотехники и электроники им. В.А. Котельникова Российской академии наук | Electric field-controlled functional element of magnonics |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140702 Effective date of abandoning: 20160120 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140702 Effective date of abandoning: 20160120 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |