CN101577357A - Strap-shaped linetype ferrite phase shifter - Google Patents
Strap-shaped linetype ferrite phase shifter Download PDFInfo
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- CN101577357A CN101577357A CNA2009100593523A CN200910059352A CN101577357A CN 101577357 A CN101577357 A CN 101577357A CN A2009100593523 A CNA2009100593523 A CN A2009100593523A CN 200910059352 A CN200910059352 A CN 200910059352A CN 101577357 A CN101577357 A CN 101577357A
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Abstract
A strap-shaped linetype ferrite phase shifter belongs to the technical field of micro-wave communication apparatuses and comprises: a rectangular cubic gyromagnetic ferrite material (1) which is internally cut with a cavity with communicated front and rear parts so as to form a closed magnetic loop, wherein the outer surface of the gyromagnetic ferrite material is printed with a silver electrode; and a rectangular medium substrate (2) the surface of which has two mutually parallel magnetizing current leads (3) and one bend type microstrip line used for shifting phase. The rectangular medium substrate is embedded in the cavity of the gyromagnetic ferrite material and insulating glue is filled between the periphery of the rectangular medium substrate and the gyromagnetic ferrite material. When the apparatus works, magnetizing current is exerted through the magnetizing current leads to magnetize the gyromagnetic ferrite, and the gyromagnetic ferrite works at remnant magnetism state after the magnetizing current is withdrawn; and microwave signals are connected between two terminal electrodes of the bend type microstrip line used for shifting phase to consequently generate nonreciprocal differential phase shift. The invention can strikingly reduce volume and mass of the ferrite phase shifter, thus being conducive to the realization for the integration of the phase shifter with other active/passive devices or components.
Description
Technical field
The invention belongs to the microwave communication device technical field, relate to a kind of miniaturization strip line type ferrite phase shifter.
Background technology
With respect to the phase shifter of forms such as PIN diode, MMIC, ferrite phase shifter has very big advantage aspect insertion loss and the average power.At present common ferrite phase shifter is distinguished from structure and mainly contained two big classes: the first adopts the form that loads ferrite hollow rectangle rod in waveguide; It two is the version that adopts printed microstrip line on ferrite substrate.Owing to the waveguide dimensions parameter will be determined by the electromagnetic wavelength of transmission, be difficult to compression in preceding a kind of structure, cause the volume and weight of phase shifter all bigger.Though the volume and weight of ferrite substrate and little band portion is little in then a kind of version,, also caused whole microstrip ferrite phase shifter volume bigger than normal for the magnetized ferrite substrate needs extra additional magnetization circuit and magnetic circuit.In addition, the performance of microstrip type ferrite phase shifter aspect phase shift degree and Insertion Loss is also relatively poor.Therefore, how when dwindling the volume and weight of ferrite phase shifter, can guarantee the phase shift performance that it is good again, become the big technical barrier that current ferrite phase shifter development is faced.
Summary of the invention
The invention provides a kind of strip line type ferrite phase shifter, this ferrite phase shifter can significantly dwindle the volume of ferrite phase shifter when taking into account the excellent properties of conventional ferrite phase shifter aspect insertion loss and average power.
Purpose of the present invention is achieved through the following technical solutions:
A kind of strip line type ferrite phase shifter as shown in Figure 1 to Figure 3, comprising:
Rectangle medium substrate 2, the internal cavities of its shape and gyromagnetic ferrite material 1 adapts.Described medium substrate 2 surfaces have two magnetizing current leads 3 that are parallel to each other and a phase shift bending-type microstrip line, and magnetizing current lead 3 is parallel to the long limit of rectangle medium substrate 2; Described phase shift is made of three sections microstrip lines that characteristic impedance equates with the bending-type microstrip line, the folding bending-type microstrip line 5 of serial connection U type in the middle of two sections orthoscopic microstrip lines 4 that are parallel to each other; Described two magnetizing current leads 3 and phase shift are parallel to each other with the orthoscopic microstrip line 4 of bending-type microstrip line and keep the wide spacing of orthoscopic microstrip line 4 microstrip lines more than 4 times.
Described rectangle medium substrate 2 is embedded in the cavity of described gyromagnetic ferrite material 1, fills insulating cement 7 around the rectangle medium substrate 2 and between the gyromagnetic ferrite material 1.
The cavity two ends of described gyromagnetic ferrite material 1 suitably spill a part of rectangle medium substrate 2, conveniently to draw magnetizing current lead 3 and the phase shift termination electrode with the bending-type microstrip line.
Need to prove:
In the technique scheme, described rectangle medium substrate 2 can be a ceramic substrate, also can be the organic polymer medium substrate; Described magnetizing current lead 3 and phase shift can adopt photoetching process to be made in rectangle medium substrate 2 surfaces with the bending-type microstrip line, also can adopt typography to be printed in rectangle medium substrate 2 surfaces.
Around the rectangle medium substrate 2 and the effect of filling insulating cement between the gyromagnetic ferrite material 1 be to guarantee to insulate between microstrip line and the Ferrite Material, simultaneously medium substrate and gyromagnetic ferrite material are bonded to an integral body.
In addition, the overall dimension of gyromagnetic ferrite material and the size of internal cavity all can change flexibly according to the design needs, in addition, are convenient processing, and all right angle corner angle also can carry out suitable chamfering.
Described transposition should be determined by emulation with the width of bending-type microstrip line, to guarantee that its characteristic impedance remains 50 Ω in project organization, wherein the folding bending-type microstrip line 5 of U type is formed by connecting by some identical quatrter-wavelength line bendings, and the length of orthoscopic microstrip line 4 is also greater than quarter-wave.
The live width of magnetizing current lead 3 is not particularly limited.Select for use the material of gyromagnetic ferrite and the material of dielectric layer also to be not particularly limited, all can change flexibly according to application demand.
The present invention compares with existing microstrip-type ferrite phase shifter, does not need additional magnetization circuit and magnetic core loop again, and volume and quality can be dwindled significantly, are more conducive to realize the integrated of phase shifter and other active/passive device and assembly.In addition, the structural design of strip line is also lower than the loss of microstrip-type ferrite phase shifter.
Description of drawings
Fig. 1 is a gyromagnet rectangle cube schematic cross-section in the strip line type ferrite phase shifter provided by the invention.
Fig. 2 is strip line type ferrite phase shifter medium substrate provided by the invention and surperficial microstrip circuit structural representation.
Fig. 3 is the perspective view of strip line type ferrite phase shifter provided by the invention.
Embodiment
Below in conjunction with concrete an enforcement and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Concrete embedded its centre frequency of dielectric layer strip line type ferrite phase shifter of implementing is about 9.2GHz, and bandwidth is inserted loss＜2dB greater than 300MHz in the bandwidth, standing-wave ratio VSWR≤1.5, and phase-shift phase surpasses 270 degree.And the length and width of this ferrite phase shifter and height only are about 24mm, 15mm and 5.5mm, are significantly less than the conventional waveguide type and the ferrite phase shifter of microstrip type.
Fig. 1～Fig. 3 is this embedded dielectric layer strip line type ferrite phase shifter part and whole structural representation.Primary structure comprises:
Gyromagnet lithium ferrite material 1, its ectosome size is respectively long 22mm, wide 15mm, high 5.5mm, the rectangle cube cavity that connects before and after inside has, the size of cavity is respectively long 22mm, wide 10mm, high 1.5mm.Gyromagnet lithium ferrite material 1 forms a closed magnetic loop.Gyromagnetic ferrite material 1 is printed with silver electrode 6 as grounding electrode around the outer surface of its internal cavities.
Rectangle medium substrate 2 adopts organic polymer medium substrate or ceramic dielectric substrate, and its size is respectively long 24mm, wide 10mm, high 0.5mm.Photoetching electrode pattern includes two magnetizing current leads that are parallel to each other and a phase shift bending-type microstrip line as shown in Figure 2 on it; Phase shift is made of the folding bending-type microstrip line of the U type of two sections orthoscopic microstrip lines that are parallel to each other and middle serial connection with the bending-type microstrip line.The live width of microstrip line will guarantee that the characteristic impedance of little band is 50 Ω.Magnetizing current lead and phase shift are parallel to each other with the orthoscopic microstrip line of bending-type microstrip line and keep the wide spacing of orthoscopic microstrip line more than 4 times, and magnetizing current lead and phase shift all are parallel to the long limit of rectangle dielectric layer with the bending-type microstrip line.
After rectangle medium substrate 2 being embedded into the cavity of gyromagnet lithium ferrite material 1, make its long limit expose identical length from the cavity two ends respectively, 1mm has been exposed at two ends respectively in this specific embodiment, introduces and draw magnetizing current and microwave signal to make things convenient for phase shifter.The lower surface of dielectric layer is adjacent to ferrite, solidifies after the embedding insulation sealing in the high space of the 1mm that reserves between upper surface and the ferrite.The complete structure of phase shifter as shown in Figure 3.
As mentioned above, just can realize the present invention preferably.This strip line type ferrite phase shifter is when work, gyromagnet lithium ferrite material 1 is around outer surface silver electrode 6 ground connection of its internal cavities, apply the impulse magnetization electric current of identical size respectively by two magnetizing current leads, can make closed gyromagnetic ferrite loop magnetization, can make gyromagnetic ferrite work in the remnant magnetism state of appointment after removing magnetizing current, and can change ferritic remnant magnetism state by the size of adjusting the impulse magnetization electric current.Connect coaxially or microstrip-fed respectively with two termination electrodes of bending-type microstrip line in phase shift, microwave signal will produce nonreciprocal differential phase shift.With the microstrip-type ferrite phase shifter of routine, the present invention has removed extra additional magnetization circuit and magnetic core loop, and volume and weight can significantly reduce.Adopt the structural design of strip line also lower simultaneously than the loss of microstrip-type structure.
Claims (7)
1, a kind of strip line type ferrite phase shifter comprises:
Gyromagnetic ferrite material (1), the profile of described gyromagnetic ferrite material (1) are a rectangle cube, the rectangle cube cavity that connects before and after its inside has; Described gyromagnetic ferrite material (1) forms a closed magnetic loop around its internal cavities; Described gyromagnetic ferrite material (1) is printed with silver electrode (6) as grounding electrode around the outer surface of its internal cavities;
Rectangle medium substrate (2), the internal cavities of its shape and gyromagnetic ferrite material (1) adapts; Described medium substrate (2) surface has two magnetizing current leads (3) that are parallel to each other and a phase shift bending-type microstrip line, and magnetizing current lead (3) is parallel to the long limit of rectangle medium substrate (2); Described phase shift is made of three sections microstrip lines that characteristic impedance equates with the bending-type microstrip line, the folding bending-type microstrip line (5) of serial connection U type in the middle of two sections orthoscopic microstrip lines (4) that are parallel to each other; Described two magnetizing current leads (3) and phase shift are parallel to each other with the orthoscopic microstrip line (4) of bending-type microstrip line and keep the wide spacing of orthoscopic microstrip line (4) microstrip line more than 4 times;
Described rectangle medium substrate (2) is embedded in the cavity of described gyromagnetic ferrite material (1), and rectangle medium substrate (2) on every side and fill insulating cement (7) between the gyromagnetic ferrite material (1).
2, strip line type ferrite phase shifter according to claim 1, it is characterized in that, the cavity two ends of described gyromagnetic ferrite material (1) suitably spill a part of rectangle medium substrate (2), conveniently to draw magnetizing current lead (3) and the phase shift termination electrode with the bending-type microstrip line.
3, strip line type ferrite phase shifter according to claim 1 and 2 is characterized in that, described rectangle medium substrate (2) is a ceramic substrate.
4, strip line type ferrite phase shifter according to claim 1 and 2 is characterized in that, described rectangle medium substrate (2) organic polymer medium substrate.
5, strip line type ferrite phase shifter according to claim 1 and 2 is characterized in that, described magnetizing current lead (3) and phase shift adopt photoetching process to be made in rectangle medium substrate (2) surface with the bending-type microstrip line.
6, strip line type ferrite phase shifter according to claim 1 and 2 is characterized in that, described magnetizing current lead (3) and phase shift adopt typography to be printed in rectangle medium substrate (2) surface with the bending-type microstrip line.
7, according to the described arbitrary strip line type ferrite phase shifter of claim 1-6, it is characterized in that, described transposition should guarantee that with the width of bending-type microstrip line its characteristic impedance is 50 Ω, wherein the folding bending-type microstrip line (5) of U type is formed by connecting by some identical quatrter-wavelength line bendings, and the length of orthoscopic microstrip line (4) is also greater than quarter-wave.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2009100593523A CN101577357A (en) | 2009-05-20 | 2009-05-20 | Strap-shaped linetype ferrite phase shifter |
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| CNA2009100593523A CN101577357A (en) | 2009-05-20 | 2009-05-20 | Strap-shaped linetype ferrite phase shifter |
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| CN101577357A true CN101577357A (en) | 2009-11-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514541A (en) * | 2015-12-25 | 2016-04-20 | 清华大学 | Ferrite type phase shifter and accelerator |
| CN106329036A (en) * | 2016-08-29 | 2017-01-11 | 电子科技大学 | LTCC-based microstrip line ferrite phase shifter |
| US11528728B2 (en) | 2016-06-20 | 2022-12-13 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Information transmission method and device |
-
2009
- 2009-05-20 CN CNA2009100593523A patent/CN101577357A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514541A (en) * | 2015-12-25 | 2016-04-20 | 清华大学 | Ferrite type phase shifter and accelerator |
| CN105514541B (en) * | 2015-12-25 | 2018-06-15 | 清华大学 | Ferrite-type phase shifter and accelerator |
| US11528728B2 (en) | 2016-06-20 | 2022-12-13 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Information transmission method and device |
| CN106329036A (en) * | 2016-08-29 | 2017-01-11 | 电子科技大学 | LTCC-based microstrip line ferrite phase shifter |
| CN106329036B (en) * | 2016-08-29 | 2019-06-21 | 电子科技大学 | A kind of microstrip line ferrite phase shifter based on LTCC |
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Application publication date: 20091111 |