CN204696220U - Based on the novel microstrip isolator of limit guided-mode structure and shielding construction - Google Patents
Based on the novel microstrip isolator of limit guided-mode structure and shielding construction Download PDFInfo
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- CN204696220U CN204696220U CN201520396859.9U CN201520396859U CN204696220U CN 204696220 U CN204696220 U CN 204696220U CN 201520396859 U CN201520396859 U CN 201520396859U CN 204696220 U CN204696220 U CN 204696220U
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Abstract
The utility model relates to microwave device field, it discloses a kind of novel microstrip isolator based on limit guided-mode structure and shielding construction, be made up of magnetic circuit (1), pad (2), permanent magnet (3), magnetic pole (4), ferrite substrate (5) and microstrip circuit (6); Described microstrip circuit (6) is produced on described ferrite substrate (5) surface; Described permanent magnet (3) is fixed in described magnetic circuit (1); Described magnetic circuit (1) is Semi-shielded structure; Described microstrip circuit (6) is limit guided-mode structure.The beneficial effects of the utility model are: by Semi-shielded structural design, and permanent magnet can be made to be utilized effectively, and improve the magnetization degree of ferrite substrate, reduce the volume of isolator, alleviate the weight of isolator.
Description
Technical field
The utility model relates to microwave device field, particularly a kind of novel microstrip isolator based on limit guided-mode structure and shielding construction.
Background technology
Microstrip isolator is that a kind of microwave signal forward that allows passes through and cuts off the passive device of reflected signal, and its effect limits the transmission direction of signal, and microwave signal can only one direction be transmitted.
At the end of the nineties in last century, design 6 ~ 18GHz microstrip isolator, adopt limit to lead Design of Membrane Structure (as shown in Figure 1).Namely ferrite substrate is under uniform DC magnetic fields, electromagnetic wave is propagated along the edge of microstrip line, a kind of short circuit-open ended border is utilized at an edge of microstrip line, at the upper outside reinforcement D.C. magnetic field of Short boundary, utilize ferromagnetic resonance to absorb and realize the strong attenuation of device to reverse transfer microwave signal, thus make the reverse loss of device comparatively large and obtain high nonreciprocal decay, absorb backward-wave, thus realize insulator functionality.
Existing 6 ~ 18GHz microstrip isolator is that (general volume is larger for Open architecture, be not less than 12mm*9.7mm*6mm), as one section of Engineering Master academic dissertation " 6 ~ 18GHz limit guided mode miniaturization microstrip isolator " of University of Electronic Science and Technology, permanent magnet is in ferrite substrate side, make strong magnetic field action in microstrip circuit ground connection edge by upper magnetic pole, realize the one-way transmission function of isolator.Permanent magnet is positioned over ferrite substrate side, makes the width of device larger; In order to apply enough strong D.C. magnetic field at microstrip circuit short circuit edge, two pieces of permanent magnets must be adopted could to meet the needs of device, making the thickness of device cannot be thinning; Meanwhile, to be positioned over the utilance in the mode magnetic field of ferrite substrate side not high for permanent magnet.
Summary of the invention
In order to solve the problems of the prior art, the utility model provides a kind of novel microstrip isolator based on limit guided-mode structure and shielding construction, solves the problem that in prior art, device volume is large.
The utility model solves the technical scheme that prior art problem adopts: a kind of novel microstrip isolator based on limit guided-mode structure and shielding construction of Design and manufacture, is made up of magnetic circuit, pad, permanent magnet, magnetic pole, ferrite substrate and microstrip circuit; Described microstrip circuit adopts thin film circuit manufacture craft to be produced on described ferrite substrate surface; Described magnetic circuit, pad, permanent magnet, magnetic pole and ferrite substrate are from top to bottom arranged in order; Described permanent magnet is fixed in described magnetic circuit; Described ferrite substrate is fixed in described magnetic circuit; Described magnetic pole connects described permanent magnet; Pad is provided with in described permanent magnet and described magnetic circuit; Described magnetic circuit is U-shaped shielding construction.
As further improvement of the utility model: described magnetic circuit is U-shaped shielding construction; Described microstrip circuit is limit guided-mode structure; Described permanent magnet is positioned at the bottom that the top of described magnetic circuit and described ferrite substrate are positioned at described magnetic circuit.
As further improvement of the utility model: described magnetic circuit and permanent magnet, magnetic pole together form magnetic loop to strengthen magnetic field.
As further improvement of the utility model: the both sides of described magnetic circuit carry out Partial Resection so that described microstrip circuit is connected with external circuit.
As further improvement of the utility model: be provided with gap between described magnetic pole and described ferrite substrate.
As further improvement of the utility model: described magnetic pole is irregular structure, is connected in the vertical direction with described permanent magnet.
As further improvement of the utility model: the installation dimension of the described novel microstrip isolator based on limit guided-mode structure and shielding construction is less, and width is not more than 6mm, is highly not more than 5.3mm, and length is not more than 12mm.
The beneficial effects of the utility model are: by Semi-shielded structural design, and permanent magnet can be made to be utilized effectively, and improve the magnetization degree of ferrite substrate, reduce the volume of isolator, alleviate the weight of isolator.
Accompanying drawing explanation
Fig. 1 is the utility model based on the novel microstrip isolator schematic diagram of limit guided-mode structure and shielding construction.
Fig. 2 is the utility model based on the novel microstrip isolator structural representation of limit guided-mode structure and shielding construction.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Based on a novel microstrip isolator for limit guided-mode structure and shielding construction, be made up of magnetic circuit 1, pad 2, permanent magnet 3, magnetic pole 4, ferrite substrate 5 and microstrip circuit 6; Described microstrip circuit 6 adopts thin film circuit manufacture craft to be produced on described ferrite substrate 5 surface; Described magnetic circuit 1, pad 2, permanent magnet 3, magnetic pole 4 and ferrite substrate 5 are from top to bottom arranged in order; Described permanent magnet 3 is fixed in described magnetic circuit 1; Described ferrite substrate 5 is fixed in described magnetic circuit; Described magnetic pole 4 connects described permanent magnet 3; Pad 2 is provided with in described permanent magnet 3 and described magnetic circuit 1; Described magnetic circuit (1) is U-shaped shielding construction.
Described magnetic circuit 1 is U-shaped shielding construction; Described microstrip circuit 6 is limit guided-mode structure; Described permanent magnet 3 is positioned at the bottom that the top of described magnetic circuit 1 and described ferrite substrate 5 are positioned at described magnetic circuit 1.
Described magnetic circuit 1 together forms magnetic loop to strengthen magnetic field with permanent magnet 3, magnetic pole 4.
The both sides of described magnetic circuit 1 carry out Partial Resection so that described microstrip circuit 6 is connected with external circuit.
As further improvement of the utility model: be provided with gap between described magnetic pole 4 and described ferrite substrate 5.
Described magnetic pole 4 is irregular structure, is connected in the vertical direction with described permanent magnet 3.
The installation dimension of the described novel microstrip isolator based on limit guided-mode structure and shielding construction is less, and width is not more than 6mm, is highly not more than 5.3mm, and length is not more than 12mm.
In one embodiment, magnetic circuit adopts U-shaped shielding construction, improves the magnetization degree of gyromagnetic ferrite substrate; Make the gauge of permanent magnet, upper magnetic pole etc. be reduced simultaneously, reduce the thickness of isolator; Permanent magnet is positioned over above ferrite substrate, reduces width (namely vertical with the transmission direction) size of isolator.
The utility model utilizes limit to lead Design of Membrane Structure principle, adopts shielding construction, and design isolated device, within the scope of C-band, X-band, Ku wave band superoctave, realizes isolation, matching feature.The utility model reduction device volume, to reduce costs etc. in have potential using value.
In the process of reality test, the effect of signal isolation should be realized within the scope of C-band, X-band, Ku wave band superoctave based on the novel microstrip isolator of limit guided-mode structure and shielding construction, realize based on limit guided-mode structure and Semi-shielded structure, isolator has the little advantage of volume, is easy to promote.
In one embodiment, while the novel microstrip isolator operating frequency leading membrane structure and shielding construction is 6 ~ 18GHz, its structure as shown in Figure 2, permanent magnet is positioned over above ferrite substrate, shorten the size in device widths direction greatly, the novel microstrip isolator Width (its width is about 6mm) more open limit guided-mode structure (width is about 9.7mm) of limit guided-mode structure and shielding construction shortens about 1/3.
Magnetic circuit not only serves the effect of support and uniform magnetic field, and due to its U-shaped structure, together form magnetic loop, play humidification to magnetic field with permanent magnet, magnetic pole, permanent magnet forms by one piece, reduces the height of device.Permanent magnet from before the ferrite substrate side that is positioned over change into and be positioned over above ferrite substrate, improve the magnetization degree of gyromagnetic ferrite substrate.Simultaneously because permanent magnet, upper magnetic pole equal thickness reduce all to some extent, reduce the thickness of isolator.Meanwhile, decrease the quantity of permanent magnet, improve the utilance of permanent magnet.The thickness of device is reduced.By the design to device architecture, change, permanent magnet is positioned over the top of ferrite substrate, substantially reduces the size of device widths, makes installation width dimensions reduce 1/3(3.5mm), reduce the volume of product; Meanwhile, the overall dimension of the element such as permanent magnet, magnetic pole also reduces about 1/4, reaches the object of weight reduction.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection range of the present utility model.
Claims (7)
1., based on a novel microstrip isolator for limit guided-mode structure and shielding construction, it is characterized in that: be made up of magnetic circuit (1), pad (2), permanent magnet (3), magnetic pole (4), ferrite substrate (5) and microstrip circuit (6); Described magnetic circuit (1), pad (2), permanent magnet (3), magnetic pole (4) and ferrite substrate (5) are from top to bottom arranged in order; Described microstrip circuit (6) is positioned at described ferrite substrate (5) surface; Described permanent magnet (3) is fixed in described magnetic circuit (1); Described ferrite substrate (5) is fixed in described magnetic circuit; Described magnetic pole (4) connects described permanent magnet (3); Pad (2) is provided with in described permanent magnet (3) and described magnetic circuit (1); Described magnetic circuit (1) is Semi-shielded structure.
2., according to claim 1 based on the novel microstrip isolator of limit guided-mode structure and shielding construction, it is characterized in that: described magnetic circuit (1) is U-shaped shielding construction; Described microstrip circuit (6) is limit guided-mode structure; Described permanent magnet (3) is positioned at the bottom that the top of described magnetic circuit (1) and described ferrite substrate (5) are positioned at described magnetic circuit (1).
3. according to claim 1 based on the novel microstrip isolator of limit guided-mode structure and shielding construction, it is characterized in that: described magnetic circuit (1) and permanent magnet (3), magnetic pole (4) together form magnetic loop to strengthen magnetic field.
4., according to claim 1 based on the novel microstrip isolator of limit guided-mode structure and shielding construction, it is characterized in that: the both sides of described magnetic circuit (1) carry out Partial Resection so that described microstrip circuit (6) is connected with external circuit.
5., according to claim 1 based on the novel microstrip isolator of limit guided-mode structure and shielding construction, it is characterized in that: between described magnetic pole (4) and described ferrite substrate (5), be provided with gap.
6., according to claim 1 based on the novel microstrip isolator of limit guided-mode structure and shielding construction, it is characterized in that: described magnetic pole (4) is irregular structure, be connected in the vertical direction with described permanent magnet (3).
7. according to claim 1 based on the novel microstrip isolator of limit guided-mode structure and shielding construction, it is characterized in that: the installation dimension of the described novel microstrip isolator based on limit guided-mode structure and shielding construction is less, width is not more than 6mm, is highly not more than 5.3mm, and length is not more than 12mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520396859.9U CN204696220U (en) | 2015-06-10 | 2015-06-10 | Based on the novel microstrip isolator of limit guided-mode structure and shielding construction |
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| CN201520396859.9U CN204696220U (en) | 2015-06-10 | 2015-06-10 | Based on the novel microstrip isolator of limit guided-mode structure and shielding construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900954A (en) * | 2015-06-10 | 2015-09-09 | 西南应用磁学研究所 | Novel microstrip isolator based on edge guided mode structure and shielding structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900954A (en) * | 2015-06-10 | 2015-09-09 | 西南应用磁学研究所 | Novel microstrip isolator based on edge guided mode structure and shielding structure |
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