CN201438496U - circulator - Google Patents
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- CN201438496U CN201438496U CN2009201322628U CN200920132262U CN201438496U CN 201438496 U CN201438496 U CN 201438496U CN 2009201322628 U CN2009201322628 U CN 2009201322628U CN 200920132262 U CN200920132262 U CN 200920132262U CN 201438496 U CN201438496 U CN 201438496U
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- circulator
- branch line
- short transmission
- transmission line
- port
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Abstract
The utility model discloses a circulator, which comprises a cavity, a central conductor, ferrite substrates and a cover plate, wherein the central conductor and the ferrite substrates are arranged in the cavity; the cover plate is arranged at the outmost layer of the cavity; the ferrite substrates are arranged at the two sides of the central conductor; the central conductor is provided with a big Y branch wire and a small Y branch wire that are arranged at intervals, and the port of at least one Y branch wire is provided with a segment of capacitive short transmission wire, so as to be equivalent to be one L/C matching network. In the circulator of the utility model, based on the double-Y junction circulator, the port of at least one Y branch wire is provided with a segment of capacitive short transmission wire in an extending way, so as to be equivalent to be one quasi lumped parameter L/C matching network which substitutes the Y branch wire used for forming the Y transmission wire in the prior art, therefore, the circulator is miniaturized; under the same performance, the working frequency of the circulator of the utility model is lower than that of the existing circulator; the circulator has small consumption; in addition, the radius of a gyromagnetic material disk is reduced to half of the gyromagnetic material disk of the existing circulator.
Description
Technical field
The utility model relates to a kind of circulator, particularly relates to a kind of strip line circulator.
Background technology
The circulator junction configuration that is made of center conductor has determined the characteristic of circulator.See also Fig. 1, it is the schematic diagram of the center conductor of the disk junction circulator that occurs the earliest.According to the theory of disk junction circulator, the disk diameter of center conductor is be directly proportional with wavelength (the promptly so-called condition of going in ring), and operating frequency is low more, and the disk diameter of center conductor is big more.
See also Fig. 2, it is the schematic diagram that has the center conductor of general two Y junction circulators now, also there is this frequency dependence in the center conductor of this pair Y junction circulator, because it is directly to develop from disk junction type center conductor to come, two Y junction circulators are to tie the single-circuit Y that replaces having quarter-wave transformer with a two circuit couple of Y to tie the miniaturization that realizes under the identical performance (comprising bandwidth).Yet under RF (radio frequency) or low microwave frequency, even two Y junction circulator, its size still seems excessive and can not accept, even if adopt High-Field work also of no avail.
So, existing circulator of generally working below low microwave frequency all is the lumped parameter type, because lumped-parameter circulator can be done very for a short time, it has very big weakness again, be not easy to do wide such as bandwidth not only, and loss is also bigger, and on some was used, for example communication aspect was unallowable.
The utility model content
The technical problem that the utility model mainly solves provides a kind of circulator, and size is less and loss is also less.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of circulator is provided, comprise a cavity, be provided with center conductor and ferrite substrate in the described cavity, the two sides of described center conductor is provided with described ferrite substrate, described center conductor has big Y branch line and the little Y branch line that the space is provided with, and the port of at least one Y branch line is extended with a capacitive short transmission line.
Wherein, all of the port place of described big Y and little Y branch line all is provided with a capacitive short transmission line.
Wherein, the structure of the short transmission line of described branch line and described extension is the L/C matching network structure of equivalence, and described branch line equivalence is an inductance element, and the short transmission line equivalence of described extension is a capacity cell.
Wherein, described center conductor shape triangular in shape.
Wherein, between described big Y branch line and the little Y branch line, offer a slit between the capacitive short transmission line of the big Y branch line port capacitive short transmission line of extending and the extension of little Y branch line port
Wherein, the operating frequency of described circulator is between 300MHz to 3GHz, and the length of the short transmission line of described branch line and extension is all between 1/8th wavelength to ten sixth wavelength.
Wherein, the width of the capacitive short transmission line of described extension is greater than the width of Y branch line.
Wherein, the width of the capacitive short transmission line of the port of described big Y branch line extension is greater than the width of the capacitive short transmission line of the port extension of described little Y branch line.
Wherein, the distance between the capacitive short transmission line of the port extension of the capacitive short transmission line of the port of described big Y branch line extension and described little Y branch line is less than the width of the capacitive short transmission line of the port extension of little Y branch line.
The beneficial effects of the utility model are: be different from the big and bigger situation of loss of existing circulator volume, the utility model circulator is on the basis of two Y junction circulators, extend the short transmission line of one section capacitive at the port of at least one Y branch line, thereby equivalence becomes accurate lumped parameter L/C type matching network to replace constituting in the prior art Y branch line of Y type transmission line, thereby make the circulator miniaturization, under identical performance, its operating frequency is lower than the operating frequency of existing circulator, loss is little, and its gyromagnetic material disc radius can narrow down to half of gyromagnetic material disk of existing circulator.
After the big Y branch line of circulator, little Y branch line all carried out above-mentioned same replacement, this circulator had little, the advantages of simple structure and simple of loss of the little and distributed constant type circulator of the size of lumped parameter type circulator concurrently.
Description of drawings
Fig. 1 is the schematic diagram of the center conductor of prior art disk knot shape circulator;
Fig. 2 is the schematic diagram of the center conductor of the two Y junction circulators of prior art;
Fig. 3 is the STRUCTURE DECOMPOSITION figure of the utility model circulator;
Fig. 4 is the schematic diagram of first embodiment of the center conductor of the utility model circulator;
Fig. 5 is the schematic diagram of second embodiment of the center conductor of the utility model circulator;
Fig. 6 is the schematic diagram of the 3rd embodiment of the center conductor of the utility model circulator.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, give explanation below in conjunction with execution mode and conjunction with figs. are detailed.
See also Fig. 3, it is the STRUCTURE DECOMPOSITION figure of circulator, has a cavity 8, is provided with center conductor 1 in the described cavity 8, ferrite substrate 2, the medium collar 3, special-shaped silver-plated paster 4, permanent magnetism sheet 5, silver-plated iron plate 6 and compensating plate 7.The upper and lower both sides of described center conductor 1 are equipped with the described medium collar 3, the described medium collar 3 plays the effect of location, be provided with described ferrite substrate 2 in the medium collar 3 of the upside of described center conductor 1, and the top of the medium collar 3 of the upside of described center conductor 1 is disposed with the silver-plated iron plate 4 of described abnormity, permanent magnetism sheet 5 and compensating plate 7 from the bottom up.Be disposed with described ferrite substrate 2, silver-plated iron plate 6 and permanent magnetism sheet 5 in the medium collar 3 of the downside of described center conductor 1 from top to bottom.Described cover plate 9 places the superiors of described cavity 8.
The silver-plated iron plate 4 of described abnormity and silver-plated iron plate 6 all can play the effect of parallel a, uniform magnetic field, and described cover plate 9 places the superiors of described cavity 8 to play the effect of armoured magnetic field.
See also Fig. 4, it is first embodiment of the center conductor of the utility model circulator, what protrude out on a circular ferrite substrate that the space is provided with approximates quarter-wave big Y branch line 30 and little Y branch line 31 greatly with being equal angles, and the joint of described big Y branch line 30 and described little Y branch line 31 forms a pair of Y knot.Described big Y branch line 30 and little Y branch line 31 all have a port.The port horizontal expansion of the big Y branch line 30 of described circulator has the capacitive short transmission line 32 of a bit of arc, and promptly described capacitive short transmission line 32 and described big Y branch line 30 intersect mutually, and is can be mutually vertical or become other angles.Can improve the impedance matching of two Y knots of this center conductor by the capacitive short transmission line 32 of extending.Structural design like this, under equal performance, such as under the identical situation of frequency range, its operating frequency can descend 30% than the operating frequency of existing pair of Y junction circulator.
See also Fig. 5, it is second embodiment of the center conductor of circulator, and big Y branch line and little Y branch line are respectively perceptual short transmission line 13,14,15 and 16,17,18.Described perceptual short transmission line 13,14,15 and 16,17,18 port are extended with the capacitive short transmission line 7,8,9 and 10,11,12 of arc respectively.Wherein, capacitive short transmission line 7,8,9 and 10,11, the 12 approximate accurate capacity cells of concentrating (respectively with C and C ' expression) of representing, and perceptual short transmission line 13,14,15 and 16,17,18 represent the accurate inductance element of concentrating (respectively with L and L ' expression), described capacitive short transmission line 7,8,9 and 10,11,12 and perceptual short transmission line 13,14,15 and 16,17,18 length a, b and c all at 1/8th wavelength between the ten sixth wavelength, each total length to L-C and L '-C ' approximates 1/8th wavelength greatly, and they represent in the prior art the big Y branch line 1 ' as the center conductor of the circulator among Fig. 2 respectively, 2 ', 3 ' and little Y branch line 4 ', 5 ', two Y transmission lines of 6 ' these formations.Yet the length of of the prior art pair of Y transmission line is approximately equal to quarter-wave, and each length to the short transmission line of formation L-C approximates 1/8th wavelength greatly in the present embodiment, has greatly reduced the length of short transmission line.
In order to obtain enough big L-C value and L '-C ' value and don't to making the oversize of them.Between the capacitive short transmission line 7,8,9 of the big Y branch line of described representative capacity cell and the capacitive short transmission line 10,11,12 of little Y branch line and represent between the perceptual transmission line 13,14,15 of inductance element and the perceptual transmission line 16,17,18 and opened a suitable wide slit, this slit can effectively increase inductance, obtain suitable L/C ratio and can not make electric capacity be subjected to big loss.The suitable L/C ratio of described acquisition be for calculate by the equivalent electric circuit theory the characteristic impedance decision of each Y knot.
See also Fig. 6, it is the 3rd embodiment of the center conductor of circulator, and this center conductor is roughly triangle, is to design for specific application scenario.Its basic characteristics are similar to the center conductor of Fig. 5, this just no longer superfluous chatting.
In the utility model circulator, owing to only need the equivalent inductance section of the two Y knots of magnetization, thereby the diameter of described permanent magnetism sheet 5 can narrow down to existing two Y junction circulators the permanent magnetism sheet 1/4th, the thickness of permanent magnetism sheet 5 also reduces accordingly, thus the utility model circulator is more frivolous.The operating frequency of the utility model circulator is particularly suitable for working under the ultra-high frequency between 300MHz～3GHz.
In the present embodiment, the length of the capacitive short transmission line of described extension is greater than the width of Y branch line.And the length a of the described capacitive short transmission line that the port of described big Y branch line extends is greater than the length b of the described capacitive short transmission line of the port extension of described little Y branch line.Distance between the capacitive short transmission line that the capacitive short transmission line that the port of described big Y branch line extends and the port of described little Y branch line extend is less than the length b of the capacitive short transmission line of the port extension of little Y branch line.
Be different from the big and bigger situation of loss of circulator volume of prior art.The utility model circulator is on the basis of two Y junction circulators, extend the short transmission line of one section capacitive at the port of big Y branch line, thereby equivalence becomes accurate lumped parameter L/C type matching network to replace constituting in the prior art the big Y branch line of Y type transmission line, thereby make the circulator miniaturization, and its gyromagnetic material disc radius can narrow down to original half, it is original 1/4th that its permanent magnet disc radius can narrow down to, and thickness also has corresponding dwindling.
In sum, the utility model can make the circulator miniaturization, under identical performance, such as under the identical situation of frequency range, its operating frequency is lower than the operating frequency of existing circulator, and its gyromagnetic material disc radius can narrow down to half of gyromagnetic material disk of existing circulator.When the big Y branch line of circulator, little Y branch line all carry out same replacement, be the short transmission line that the port of the port of big Y branch line and little Y branch line all is extended with one section capacitive, this circulator has little, the advantages of simple structure and simple of loss of the little and distributed constant type circulator of the size of lumped parameter type circulator concurrently.
The utility model circulator is particularly suitable for using under RF and the low microwave frequency.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (9)
1. circulator, comprise a cavity, be provided with center conductor and ferrite substrate in the described cavity, the two sides of described center conductor is provided with described ferrite substrate, described center conductor has big Y branch line and the little Y branch line that the space is provided with, it is characterized in that the port of at least one Y branch line is extended with a capacitive short transmission line.
2. a kind of circulator according to claim 1 is characterized in that, all of the port place of described big Y and little Y branch line all is provided with a capacitive short transmission line.
3. a kind of circulator according to claim 2, it is characterized in that, the structure of the short transmission line of described branch line and described extension is the L/C matching network structure of equivalence, and described branch line equivalence is an inductance element, and the short transmission line equivalence of described extension is a capacity cell.
4. a kind of circulator according to claim 3 is characterized in that, described center conductor shape triangular in shape.
5. a kind of circulator according to claim 3 is characterized in that, between described big Y branch line and the little Y branch line, offer a slit between the capacitive short transmission line of the big Y branch line port capacitive short transmission line of extending and the extension of little Y branch line port.
6. according to each described a kind of circulator of claim 1 to 5, it is characterized in that, the operating frequency of described circulator is between 300MHz to 3GHz, and the length of the short transmission line of described branch line and extension is all between 1/8th wavelength to ten sixth wavelength.
7. according to each described a kind of circulator of claim 1 to 5, it is characterized in that the length of the capacitive short transmission line of described extension is greater than the width of Y branch line.
8. according to each described a kind of circulator of claim 1 to 5, it is characterized in that the length of the capacitive short transmission line that the port of described big Y branch line extends is greater than the length of the capacitive short transmission line of the port extension of described little Y branch line.
9. according to each described a kind of circulator of claim 1 to 5, it is characterized in that the distance between the capacitive short transmission line that the capacitive short transmission line that the port of described big Y branch line extends and the port of described little Y branch line extend is less than the length of the capacitive short transmission line of the port extension of little Y branch line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201322628U CN201438496U (en) | 2009-05-27 | 2009-05-27 | circulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201322628U CN201438496U (en) | 2009-05-27 | 2009-05-27 | circulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201438496U true CN201438496U (en) | 2010-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201322628U Expired - Lifetime CN201438496U (en) | 2009-05-27 | 2009-05-27 | circulator |
Country Status (1)
| Country | Link |
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| CN (1) | CN201438496U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621148B (en) * | 2009-05-27 | 2013-02-13 | 深圳市华扬通信技术有限公司 | Circulator |
| CN102938484A (en) * | 2012-11-22 | 2013-02-20 | 彭龙 | Symmetrically-slotted double-Y junction microstrip ferrite circulator |
-
2009
- 2009-05-27 CN CN2009201322628U patent/CN201438496U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621148B (en) * | 2009-05-27 | 2013-02-13 | 深圳市华扬通信技术有限公司 | Circulator |
| CN102938484A (en) * | 2012-11-22 | 2013-02-20 | 彭龙 | Symmetrically-slotted double-Y junction microstrip ferrite circulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000 Guangdong city of Shenzhen province Nanshan District Shekou Shao Di Road No. 1 Chiwan Industrial Park E building two floor Patentee after: Shenzhen Huayang Communication Technology Co., Ltd. Address before: Nanshan District Xili Town, Shenzhen city Guangdong province 518000 new village Wang Tong Industrial Zone 25 Building 5 North Building Patentee before: Shenzhen Huayang Communication Technology Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20100414 Effective date of abandoning: 20090527 |
|
| RGAV | Abandon patent right to avoid regrant |