CN203242730U - Micro-strip substrate type isolator - Google Patents
Micro-strip substrate type isolator Download PDFInfo
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- CN203242730U CN203242730U CN 201320296806 CN201320296806U CN203242730U CN 203242730 U CN203242730 U CN 203242730U CN 201320296806 CN201320296806 CN 201320296806 CN 201320296806 U CN201320296806 U CN 201320296806U CN 203242730 U CN203242730 U CN 203242730U
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- microstrip
- substrate
- permanent magnet
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Abstract
The utility model discloses a micro-strip substrate type isolator which comprises a base, a ferrite substrate, a micro-strip circuit, a ceramic plate, a permanent magnet and a radio frequency resistor chip, wherein the micro-strip circuit is arranged on the upper surface of the ferrite substrate, the micro-strip circuit is connected with the radio frequency resistor chip, the ceramic plate and the permanent magnet are arranged on the micro-strip circuit, and the ferrite substrate and the radio frequency resistor chip are fixed on the base. According to the micro-strip substrate type isolator, the ferrite substrate is longitudinally magnetized by the permanent magnet, which enables the edge of the ferrite substrate to be magnetized uniformly and enables the isolator to meet the requirement for working in a higher frequency range; and the micro-strip substrate type isolator is simple in structure and suitable for surface mounting and micro circuit integration.
Description
Technical field
The utility model relates to a kind of isolator, relates in particular to a kind of microstrip substrate formula isolator, belongs to the microwave communication field.
Background technology
Along with developing rapidly of microwave communication, the application of microwave electron equipment is increasingly extensive, overall performance also improves a lot, ferrite isolator index is wherein also had higher requirement, embedded isolator can not satisfy the demand of many systems paster substantially, and existing SMD isolator can not satisfy the needs of high-frequency range because operating frequency range is lower.
The utility model content
Technical problem to be solved in the utility model provides a kind of microstrip substrate formula isolator, can satisfy the job requirement of lower frequency range, and simple in structure, is applicable to surface mount and microcircuit is integrated.
The utility model is to solve the problems of the technologies described above the technical scheme that adopts to provide a kind of microstrip substrate formula isolator, comprise ferrite substrate and microstrip circuit, described microstrip circuit is arranged on the upper surface of ferrite substrate, wherein, described microstrip circuit is connected with the radio-frequency resistance chip, be provided with potsherd and permanent magnet on the described microstrip circuit, described ferrite substrate and radio-frequency resistance chip are fixed on the base.
Above-mentioned microstrip substrate formula isolator, wherein, the central axis overlaid of the disc centre axis of described microstrip circuit, the disc centre axis of potsherd and permanent magnet.
Above-mentioned microstrip substrate formula isolator, wherein, described radio-frequency resistance chip is circumscribed radio-frequency resistance chip, described circumscribed radio-frequency resistance chip is weldingly connected by a pin of solder(ing) paste and microstrip circuit.
Above-mentioned microstrip substrate formula isolator, wherein, described microstrip circuit is by the upper surface of photoetching plating at described ferrite substrate.
Above-mentioned microstrip substrate formula isolator, wherein, the two sides of described potsherd is glued together by epoxy resin layer and microstrip circuit, permanent magnet respectively.
Above-mentioned microstrip substrate formula isolator, wherein, described permanent magnet is the samarium cobalt permanent magnet body.
Above-mentioned microstrip substrate formula isolator, wherein, described base is the iron-nickel alloy base.
The utility model contrast prior art has following beneficial effect: the microstrip substrate formula isolator that the utility model provides, by permanent magnet longitudinal magnetized ferrite substrate, so that the magnetization of ferrite substrate edge evenly, thereby satisfy the job requirement of lower frequency range, and simple in structure, be applicable to surface mount and microcircuit is integrated.
Description of drawings
Fig. 1 is the utility model microstrip substrate formula isolator decomposition texture schematic diagram;
Fig. 2 is the utility model microstrip substrate formula isolator package assembly schematic diagram.
Among the figure:
1 base, 2 radio-frequency resistance chips, 3 microstrip circuits
4 ferrite substrates, 5 potsherds, 6 permanent magnets
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Fig. 1 is the utility model microstrip substrate formula isolator decomposition texture schematic diagram; Fig. 2 is the utility model microstrip substrate formula isolator package assembly schematic diagram.
See also Fig. 1 and Fig. 2, the microstrip substrate formula isolator that the utility model provides comprises ferrite substrate 4 and microstrip circuit 3, described microstrip circuit 3 is arranged on the upper surface of ferrite substrate 4, wherein, described microstrip circuit 3 is connected with radio-frequency resistance chip 2, be provided with potsherd 5 and permanent magnet 6 on the described microstrip circuit 3, described ferrite substrate 4 and radio-frequency resistance chip 2 are fixed on the base 1.
The microstrip substrate formula isolator that the utility model provides, described ferrite substrate 4 Curie temperature are high, and temperature stability is good.Permanent magnet 6 longitudinal magnetized ferrite substrates 4, the magnetization of ferrite substrate edge evenly.In order further to guarantee the magnetization of ferrite substrate edge evenly, the best overlaid of central axis of the disc centre axis of described microstrip circuit 3, the disc centre axis of potsherd 5 and permanent magnet 6.Simultaneously, described ferrite substrate 4 upper surfaces can be taked polishing, utilize chemical method degreasing and foreign particle, and the physical method effects on surface activates, removes absorption, guarantee the adhesive force of circuit rete.
The microstrip substrate formula isolator that the utility model provides, permanent magnet 6 is preferably the samarium cobalt permanent magnet body; Described base 1 is made by magnetic metal materials processing, is preferably the alloy of iron or iron, such as the iron-nickel alloy base.The concrete connection of the microstrip substrate formula isolator critical piece that the utility model provides is as follows: described microstrip circuit 3 is electroplated at described ferrite substrate 3 upper surfaces by photoetching technique, be applicable to surface mounting technology, and be connected with microwave circuit by the gold wire bonding technology.Radio-frequency resistance chip 2 is used for absorbing reflected microwave signal, described radio-frequency resistance chip 2 is welded on the base 1 by solder(ing) paste, radio-frequency resistance chip 2 welds with 3 one pins of microstrip circuit, and radio-frequency resistance chip 2 adopts external form can better absorb reflected microwave signal.Described potsherd 5 is glued on the microstrip circuit 3 by epoxy resin, best so that the central axis overlaid of the disk of the central axis of potsherd 5 and microstrip circuit 3 during sticker, described permanent magnet 6 is glued on the potsherd 5 by epoxy resin, the best overlaid of the central axis of the disk of the central axis of described permanent magnet 6 and potsherd 5 is so that permanent magnet 6 longitudinal magnetized ferrite substrate 4 more equably; Described ferrite substrate 4 is welded on the iron-nickel alloy base 1 by solder(ing) paste; ground connection is good; and because base 1 is suitable with the thermal coefficient of expansion of ferrite substrate 4; can when welding, protect ferrite substrate 4; reduce the risk that causes the ferrite substrate cracking owing to welding, improved the reliability of product.
The key technical indexes such as the following table of the microstrip substrate formula isolator that the utility model provides:
| Frequency range | 8.5-10.5GHz |
| Forward loss | ≤0.5dB |
| Reverse isolation | ≥18dB |
| Standing-wave ratio | ≤1.30 |
| Temperature range | -55℃～+85℃ |
| Joint form | W→W |
| Overall dimension | 7.0×10.0×4.5mm |
In sum, the microstrip substrate formula isolator that the utility model provides is by permanent magnet 6 longitudinal magnetized ferrite substrates 4, so that the magnetization of ferrite substrate 4 edges evenly, thereby satisfy the job requirement of lower frequency range, and simple in structure, be applicable to surface mount and microcircuit is integrated.
Although the utility model discloses as above with preferred embodiment; so it is not to limit the utility model; any those skilled in the art; within not breaking away from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection range of the present utility model is worked as with being as the criterion that claims were defined.
Claims (7)
1. microstrip substrate formula isolator, comprise ferrite substrate (4) and microstrip circuit (3), described microstrip circuit (3) is arranged on the upper surface of ferrite substrate (4), it is characterized in that, described microstrip circuit (3) is connected with radio-frequency resistance chip (2), be provided with potsherd (5) and permanent magnet (6) on the described microstrip circuit (3), described ferrite substrate (4) and radio-frequency resistance chip (2) are fixed on the base (1).
2. microstrip substrate formula isolator as claimed in claim 1 is characterized in that, the disc centre axis of the disc centre axis of described microstrip circuit (3), potsherd (5) and the central axis overlaid of permanent magnet (6).
3. microstrip substrate formula isolator as claimed in claim 1, it is characterized in that, described radio-frequency resistance chip (2) is circumscribed radio-frequency resistance chip, and described circumscribed radio-frequency resistance chip is weldingly connected by a pin of solder(ing) paste and microstrip circuit (3).
4. microstrip substrate formula isolator according to claim 1 is characterized in that, described microstrip circuit (3) is by the upper surface of photoetching plating in described ferrite substrate (4).
5. microstrip substrate formula isolator according to claim 1 is characterized in that, the two sides of described potsherd (5) is glued together by epoxy resin layer and microstrip circuit (3), permanent magnet (6) respectively.
6. microstrip substrate formula isolator according to claim 1 is characterized in that, described permanent magnet (6) is the samarium cobalt permanent magnet body.
7. microstrip substrate formula isolator according to claim 1 is characterized in that, described base (1) is the iron-nickel alloy base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320296806 CN203242730U (en) | 2013-05-28 | 2013-05-28 | Micro-strip substrate type isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320296806 CN203242730U (en) | 2013-05-28 | 2013-05-28 | Micro-strip substrate type isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203242730U true CN203242730U (en) | 2013-10-16 |
Family
ID=49319992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320296806 Expired - Fee Related CN203242730U (en) | 2013-05-28 | 2013-05-28 | Micro-strip substrate type isolator |
Country Status (1)
| Country | Link |
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| CN (1) | CN203242730U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069162A (en) * | 2016-11-29 | 2017-08-18 | 北京无线电测量研究所 | A kind of microstrip circulator for being conducive to second harmonic to suppress |
| CN107834138A (en) * | 2017-10-26 | 2018-03-23 | 苏州华博电子科技有限公司 | A kind of composite ceramic-based microstrip isolator |
| WO2019095791A1 (en) * | 2017-11-15 | 2019-05-23 | 深圳市华扬通信技术有限公司 | Microwave ferrite device |
-
2013
- 2013-05-28 CN CN 201320296806 patent/CN203242730U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069162A (en) * | 2016-11-29 | 2017-08-18 | 北京无线电测量研究所 | A kind of microstrip circulator for being conducive to second harmonic to suppress |
| CN107834138A (en) * | 2017-10-26 | 2018-03-23 | 苏州华博电子科技有限公司 | A kind of composite ceramic-based microstrip isolator |
| WO2019095791A1 (en) * | 2017-11-15 | 2019-05-23 | 深圳市华扬通信技术有限公司 | Microwave ferrite device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20190528 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |