CN112768860B - Miniaturized wide band circulator - Google Patents
Miniaturized wide band circulator Download PDFInfo
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- CN112768860B CN112768860B CN202011614514.8A CN202011614514A CN112768860B CN 112768860 B CN112768860 B CN 112768860B CN 202011614514 A CN202011614514 A CN 202011614514A CN 112768860 B CN112768860 B CN 112768860B
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- insulating substrate
- circulator
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- permanent magnet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/32—Non-reciprocal transmission devices
- H01P1/38—Circulators
- H01P1/383—Junction circulators, e.g. Y-circulators
Abstract
The invention relates to the technical field of electronic components and discloses a miniaturized broadband circulator, which comprises a shell and a magnetic assembly, wherein the magnetic assembly comprises a central conductor, and the central conductor comprises: the insulating substrate is uniformly provided with three first connecting holes around the circumference of the insulating substrate, and the first connecting holes penetrate through a first surface and a second surface which are oppositely arranged on the insulating substrate; the reciprocal junction conductor piece is arranged on the first surface of the insulating substrate and comprises three first connecting ends uniformly arranged around the circumference of the reciprocal junction conductor piece; and the three resonance conductor pieces are arranged on the second surface of the insulating substrate and comprise a first LC resonance structure and a second LC resonance structure which are connected in series, one end, far away from the series point, of the first LC resonance structure is connected with the first connection end in a one-to-one correspondence mode through the first connection hole, and one end, far away from the series point, of the second LC resonance structure is connected with an external circuit. The miniaturized broadband circulator can improve the frequency bandwidth on the premise of not increasing the radial size of the circulator.
Description
Technical Field
The invention relates to the technical field of electronic components, in particular to a miniaturized broadband circulator.
Background
With the development of 5G communication systems, the circulator, which is the main component of the communication system, has become a key to miniaturization and wide frequency. For broadband products, the design of broadband circulators at the present stage is mainly based on a conventional circulator design method, namely, the size of ferrite and the design of a middle conductor shape are adjusted, the central conductor is all made of etched copper and is attached to the ferrite and the inner cavity of the box body in a plane mode, the bandwidth of the products designed by the conventional design method is limited, the specific bandwidth at the present stage is basically not more than 20%, the relatively common bandwidth is 1805MHz-2170MHz, and the requirements of partial contexts with higher bandwidth requirements cannot be met.
Therefore, a small broadband circulator is needed to solve the above-mentioned technical problems.
Disclosure of Invention
Based on the above, the present invention provides a miniaturized wideband circulator, which has a simple structure and is easy to produce, and the frequency bandwidth is increased without increasing the radial dimension of the circulator.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a miniaturized wide band circulator, includes shell and magnetic component, be equipped with the cavity in the shell, magnetic component locates in the cavity, magnetic component includes the center conductor, the center conductor includes:
the circuit board comprises an insulating substrate, wherein three first connecting holes are uniformly formed in the insulating substrate around the circumference of the insulating substrate, and penetrate through a first surface and a second surface which are oppositely arranged on the insulating substrate;
the reciprocal junction conductor piece is arranged on the first surface of the insulating substrate and comprises three first connecting ends uniformly arranged around the circumference of the reciprocal junction conductor piece; and
the three resonant conductor pieces are arranged on the second surface of the insulating substrate and comprise a first LC resonant structure and a second LC resonant structure which are connected in series, one end, far away from the series point, of the first LC resonant structure is connected with the first connection end in a one-to-one correspondence mode through the first connection hole, and one end, far away from the series point, of the second LC resonant structure is connected with an external circuit.
As an alternative of the miniaturized wideband circulator, the inner walls of the first connection holes are respectively provided with a first metal coating, and the first metal coatings connect the first connection end and one end of the first LC resonance structure far away from the series point.
As an alternative of the miniaturized wideband circulator, the insulating substrate is further provided with three second connecting holes, the second connecting holes penetrate through the first surface and the second surface which are arranged on the insulating substrate oppositely, and one end, far away from the series point, of the second LC resonance structure is connected with an external circuit through a connecting terminal inserted in the second connecting holes.
As an alternative of the miniaturized wideband circulator, the inner walls of the second connecting holes are provided with second metal coatings, the first surface of the insulating substrate is provided with metal pads corresponding to the first connecting holes, and the second metal coatings are connected with the metal pads and one ends, far away from the series connection point, of the second LC resonance structures.
As an alternative to a miniaturized wideband circulator, the housing includes:
lower casing, lower casing includes bottom plate and three edge the lateral wall that the circumference of bottom plate set up, the lateral wall all connect in the upper surface of bottom plate, adjacent two form the groove of stepping down between the lateral wall, the groove of stepping down with the position one-to-one setting of second connecting hole.
As an alternative of a miniaturized broadband circulator, the bottom plate corresponds to the terminal fixing seat is arranged on the position of the yielding groove, and the terminal fixing seat is provided with a terminal fixing hole for fixing the connecting terminal.
As an alternative to a miniaturized wideband circulator, the housing further comprises:
the top cover is arranged at the top end of the lower shell and connected with the side wall.
As an alternative to a miniaturized wideband circulator, the resonant conductor patch is provided in a U-shaped configuration.
As an alternative of the miniaturized wideband circulator, the magnetic component further includes an upper permanent magnet, an upper ferrite, a lower ferrite, a first lower permanent magnet, and a second lower permanent magnet, and the upper permanent magnet, the upper ferrite, the central conductor, the lower ferrite, the first lower permanent magnet, and the second lower permanent magnet are stacked from top to bottom.
As an alternative to a miniaturized wideband circulator, the magnetic assembly further comprises a ground plate disposed between the upper permanent magnet and the upper ferrite.
The invention has the beneficial effects that:
the miniaturized broadband circulator provided by the invention comprises a shell and a central conductor arranged in a cavity of the shell, wherein the central conductor consists of an insulating substrate, a reciprocal junction conductor piece and three resonance conductor pieces, the reciprocal junction conductor piece is arranged on a first surface of the insulating substrate, the three resonance conductor pieces are arranged on a second surface of the insulating substrate, the resonance conductor pieces are respectively connected with three first connecting ends of the reciprocal junction conductor pieces, the resonance conductor pieces are formed by connecting a first LC resonance structure and a second LC resonance structure in series, the central conductor and the external circuit are connected through two independent groups of LC resonance circuits, so that on the premise that the radial size of the central conductor and the circulator provided by the invention is not increased, compared with the prior art, each connecting end of the central conductor and the external circuit is provided with one group of LC resonance circuits, the frequency bandwidth is improved, and meanwhile, the circulator is simple in structure and easy to produce.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is an exploded view of a miniaturized wideband circulator according to the present invention;
FIG. 2 is an exploded view of the center conductor provided by the present invention;
FIG. 3 is a schematic view of a first side of a center conductor provided by the present invention;
FIG. 4 is a schematic diagram of a second side of the center conductor provided by the present invention;
fig. 5 is a graph of a loss test for a miniaturized wideband circulator of the present invention having a diameter of 0.75 inches.
In the figure:
1. a center conductor; 11. an insulating substrate; 111. a first connection hole; 112. a second connection hole; 12. a reciprocal junction conductor sheet; 121. a first connection end; 122. a capacitor hole; 13. a resonant conductor patch; 131. a first LC resonance structure; 132. a second LC resonance structure; 14. a metal pad;
2. an upper permanent magnet; 3. adding ferrite; 4. a lower ferrite; 5. a first lower permanent magnet; 6. a second lower permanent magnet; 7. a ground plate; 8. a lower housing; 81. a base plate; 811. a terminal holder; 82. a side wall; 9. a top cover; 10. and a connection terminal.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-4, the present embodiment provides a miniaturized wideband circulator, which includes a housing and a magnetic component, wherein a cavity is disposed in the housing, the magnetic component is disposed in the cavity, the magnetic component includes a central conductor 1, and the central conductor 1 includes an insulating substrate 11, a reciprocal conductor piece 12, and three resonant conductor pieces 13. The insulating substrate 11 is uniformly provided with three first connection holes 111 around the circumference thereof, and the first connection holes 111 penetrate through a first surface and a second surface which are oppositely arranged on the insulating substrate 11; the reciprocal junction conductor piece 12 is arranged on the first surface of the insulating substrate 11, and the reciprocal junction conductor piece 12 comprises three first connection terminals 121 uniformly arranged around the circumference thereof; the three resonant conductor strips 13 are all disposed on the second surface of the insulating substrate 11, each resonant conductor strip 13 includes a first LC resonant structure 131 and a second LC resonant structure 132 connected in series, one end of each first LC resonant structure 131 far away from the series point is connected with the first connection end 121 through the first connection hole 111 in a one-to-one correspondence manner, and one end of each second LC resonant structure 132 far away from the series point is connected with an external circuit.
Specifically, the center conductor 1 according to the present embodiment includes an insulating substrate 11, a reciprocal junction conductor piece 12, and three resonance conductor pieces 13, the reciprocal junction conductor piece 12 is provided on a first surface of the insulating substrate 11, the three resonance conductor pieces 13 are provided on a second surface of the insulating substrate 11, and the resonance conductor pieces 13 are connected to the three first connection terminals 121 of the reciprocal junction conductor piece 12, respectively. Because the resonance conductor piece 13 comprises first LC resonance structure 131 and second LC resonance structure 132 series connection, central conductor 1 all is connected through two sets of independent LC resonance circuit with external circuit promptly for central conductor 1 and circulator that this embodiment provided are under the prerequisite that does not increase radial dimension, and central conductor 1 all increases a set of LC resonance circuit with every link that external circuit is connected prior art, has realized the promotion of frequency bandwidth, simple structure simultaneously, easily production.
Optionally, the inner walls of the first connection holes 111 are provided with first metal coatings, and the first metal coatings are connected to the first connection end 121 and one end of the first LC resonance structure 131 far away from the series point in a conduction manner.
Further, the insulating substrate 11 is further provided with three second connection holes 112, the second connection holes 112 are uniformly distributed along the circumferential direction of the insulating substrate 11, the second connection holes 112 penetrate through the first surface and the second surface of the insulating substrate 11, which are oppositely arranged, and one end of the second LC resonance structure 132, which is far away from the series connection point, is connected with an external circuit through the connection terminal 10 inserted in the second connection hole 112.
Optionally, the inner walls of the second connection holes 112 are provided with second metal coatings, the first surface of the insulating substrate 11 is provided with metal pads 14 corresponding to the first connection holes 111, and the second metal coatings connect the metal pads 14 and one end of the second LC resonant structure 132 away from the series point. Specifically, the connection terminal 10 is connected to the metal pad 14 by soldering.
Alternatively, the reciprocal junction conductor plate 12 is configured as a disk-shaped structure, and two capacitor holes 122 are respectively formed at positions close to the first connection end 121.
Preferably, the resonant conductor piece 13 is configured as a U-shaped structure, that is, one end of the first LC resonant structure 131 far away from the series point is adjacent to one end of the second LC resonant structure 132 far away from the series point, and the first connection holes 111 and the second connection holes 112 are correspondingly disposed at adjacent positions, so that the first connection holes 111 and the second connection holes 112 are disposed at the edge of the insulating substrate 11.
Preferably, the central conductor 1 is made of a PCB substrate, and the reciprocal junction conductor piece 12, the resonance conductor piece 13 and the metal pad 14 are formed by etching.
Optionally, the magnetic component further includes an upper permanent magnet 2, an upper ferrite 3, a lower ferrite 4, a first lower permanent magnet 5, and a second lower permanent magnet 6, and the upper permanent magnet 2, the upper ferrite 3, the central conductor 1, the lower ferrite 4, the first lower permanent magnet 5, and the second lower permanent magnet 6 are stacked from top to bottom.
Optionally, the magnet assembly further comprises a ground plate 7, the ground plate 7 being disposed between the upper permanent magnet 2 and the upper ferrite 3.
Optionally, the outer shell includes a lower shell 8, the lower shell 8 includes a bottom plate 81 and three side walls 82 arranged along the circumferential direction of the bottom plate 81, the side walls 82 are all connected to the upper surface of the bottom plate 81, a yielding groove is formed between two adjacent side walls 82, the yielding groove and the second connecting hole 112 are arranged in a one-to-one correspondence manner, and a space enough for accommodating the connecting terminal 10 is reserved.
Further, a terminal fixing seat 811 is disposed on the bottom plate 81 at a position corresponding to the yielding groove, and a terminal fixing hole is disposed on the terminal fixing seat 811 for fixing the connection terminal 10.
Optionally, the housing further comprises a top cover 9, the top cover 9 being disposed at the top end of the lower case 8 and connected to the side wall 82.
The loss of the miniaturized wideband circulator with a diameter of 0.75 inch is shown in fig. 5, in which the abscissa is frequency, the ordinate is loss, the curve S1 is insertion loss, the curve S2 is return loss, the return loss is about 17dB and the insertion loss is about 0.5dB in the interval of 1800MHz to 2700MHz, and the specification requirement is met. Without increasing the size of the product, the specific band rate is increased from 20% to 40%, and the frequency band is widened to an ultra-wide band.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. The utility model provides a miniaturized wide band circulator, includes shell and magnetic component, be equipped with the cavity in the shell, magnetic component locates in the cavity, magnetic component includes central conductor (1), its characterized in that, central conductor (1) includes:
the circuit board comprises an insulating substrate (11), wherein three first connecting holes (111) are uniformly formed in the insulating substrate (11) around the circumference of the insulating substrate, and the first connecting holes (111) penetrate through a first surface and a second surface, which are oppositely arranged, of the insulating substrate (11);
the reciprocal junction conductor piece (12) is arranged on the first surface of the insulating substrate (11), and the reciprocal junction conductor piece (12) comprises three first connecting ends (121) which are uniformly arranged around the circumference of the reciprocal junction conductor piece; and
the three resonant conductor pieces (13) are arranged on the second surface of the insulating substrate (11), each resonant conductor piece (13) comprises a first LC resonant structure (131) and a second LC resonant structure (132) which are connected in series, one end, far away from the series point, of each first LC resonant structure (131) is connected with the first connection end (121) through the first connection hole (111) in a one-to-one correspondence mode, and one end, far away from the series point, of each second LC resonant structure (132) is connected with an external circuit.
2. The miniaturized broadband circulator of claim 1, wherein a first metal coating is disposed on each inner wall of the first connection hole (111), and the first metal coating connects the first connection end (121) and one end of the first LC resonance structure (131) far away from the series connection point.
3. The miniaturized broadband circulator of claim 1, wherein three second connection holes (112) are further formed in the insulating substrate (11), the second connection holes (112) penetrate through the first surface and the second surface of the insulating substrate (11) which are oppositely arranged, and one end, far away from the series connection point, of the second LC resonance structure (132) is connected with an external circuit through a connection terminal (10) inserted into the second connection hole (112).
4. The miniaturized broadband circulator of claim 3, wherein a second metal coating is disposed on the inner walls of the second connection holes (112), a metal pad (14) is disposed on the first surface of the insulating substrate (11) corresponding to the first connection hole (111), and the second metal coating connects the metal pad (14) and one end of the second LC resonant structure (132) away from the series point.
5. The miniaturized broadband circulator of claim 3 wherein the housing comprises:
lower casing (8), lower casing (8) include bottom plate (81) and three edge lateral wall (82) that the circumference of bottom plate (81) set up, lateral wall (82) all connect in the upper surface of bottom plate (81), adjacent two form between lateral wall (82) and step down the groove, step down the groove with the position one-to-one setting of second connecting hole (112).
6. The miniaturized broadband circulator of claim 5, wherein the bottom plate (81) is provided with a terminal fixing seat (811) at a position corresponding to the abdicating groove, and the terminal fixing seat (811) is provided with a terminal fixing hole for fixing the connecting terminal (10).
7. The miniaturized broadband circulator of claim 5 wherein the housing further comprises:
and the top cover (9) is arranged at the top end of the lower shell (8) and is connected with the side wall (82).
8. The miniaturized broadband circulator of claim 1, wherein the resonant conductor sheet (13) is configured in a U-shaped configuration.
9. The miniaturized broadband circulator of claim 1, wherein the magnetic assembly further comprises an upper permanent magnet (2), an upper ferrite (3), a lower ferrite (4), a first lower permanent magnet (5) and a second lower permanent magnet (6), and the upper permanent magnet (2), the upper ferrite (3), the central conductor (1), the lower ferrite (4), the first lower permanent magnet (5) and the second lower permanent magnet (6) are stacked from top to bottom.
10. Miniaturized broadband circulator of claim 9, characterized in that said magnetic assembly further comprises a ground plate (7), said ground plate (7) being arranged between said upper permanent magnet (2) and said upper ferrite (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011614514.8A CN112768860B (en) | 2020-12-30 | 2020-12-30 | Miniaturized wide band circulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011614514.8A CN112768860B (en) | 2020-12-30 | 2020-12-30 | Miniaturized wide band circulator |
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| Publication Number | Publication Date |
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| CN112768860A CN112768860A (en) | 2021-05-07 |
| CN112768860B true CN112768860B (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011614514.8A Active CN112768860B (en) | 2020-12-30 | 2020-12-30 | Miniaturized wide band circulator |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07131207A (en) * | 1993-11-02 | 1995-05-19 | Murata Mfg Co Ltd | Irreversible circuit element |
| CN101621148A (en) * | 2009-05-27 | 2010-01-06 | 深圳市华扬通信技术有限公司 | Circulator |
| CN111129676A (en) * | 2020-01-14 | 2020-05-08 | 中国电子科技集团公司第九研究所 | Method for improving harmonic suppression performance of circulator and circulator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3548824B2 (en) * | 2000-06-14 | 2004-07-28 | 株式会社村田製作所 | Non-reciprocal circuit device and communication device |
-
2020
- 2020-12-30 CN CN202011614514.8A patent/CN112768860B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07131207A (en) * | 1993-11-02 | 1995-05-19 | Murata Mfg Co Ltd | Irreversible circuit element |
| CN101621148A (en) * | 2009-05-27 | 2010-01-06 | 深圳市华扬通信技术有限公司 | Circulator |
| CN111129676A (en) * | 2020-01-14 | 2020-05-08 | 中国电子科技集团公司第九研究所 | Method for improving harmonic suppression performance of circulator and circulator |
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| Publication number | Publication date |
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| CN112768860A (en) | 2021-05-07 |
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Address after: 523000 Room 401 and 402, building 5, No. 24, industrial East Road, Songshanhu Park, Dongguan City, Guangdong Province Patentee after: Guangdong daguangxin Technology Co.,Ltd. Address before: 523808 the first, second and third floors of building 16, small and medium-sized science and technology enterprise Pioneer Park, North Industrial City, Songshanhu high tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee before: Guangdong Dapu Telecom Technology Co.,Ltd. |
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