CN114826251A - Frequency divider - Google Patents
Frequency divider Download PDFInfo
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- CN114826251A CN114826251A CN202210554547.0A CN202210554547A CN114826251A CN 114826251 A CN114826251 A CN 114826251A CN 202210554547 A CN202210554547 A CN 202210554547A CN 114826251 A CN114826251 A CN 114826251A
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- frequency divider
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K27/00—Pulse counters in which pulses are continuously circulated in a closed loop; Analogous frequency dividers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0021—Constructional details
- H03H2001/005—Wound, ring or feed-through type inductor
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Abstract
The invention discloses a frequency divider. The frequency divider comprises at least two filtering units, wherein the first end of each filtering unit is connected with the first end of the frequency divider, and the second end of each filtering unit is used as the second end of the frequency divider; each filtering unit comprises at least one inductance element, the signal transmission directions of the inductance elements at adjacent positions are opposite, mutual interference between magnetic fields generated by the inductance elements at adjacent positions can be reduced, further, the mutual interference between the filtering units can be reduced, and the isolation degree between different channels of the frequency divider is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of signal processing, in particular to a frequency divider.
Background
The frequency divider has the function of carrier aggregation. In modern communications, as the requirement for carrier aggregation function increases, the frequency dividers are widely used, so that the requirements for frequency dividers (such as duplexers, triplexers, and multiplexers) with low insertion loss and high isolation are increasing. In the prior art, the filters of different channels in the frequency divider may be inductance-capacitance filters (LC filters for short). In a frequency divider with a relatively close distance between the pass band and the stop band (e.g. 100-200MHz), it is a great challenge to design the LC filter in the frequency divider to ensure the requirements of both the insertion loss and the isolation between different channels of the frequency divider.
Disclosure of Invention
The invention provides a frequency divider, which is used for improving the isolation between different channels of the frequency divider.
In a first aspect, an embodiment of the present invention provides a frequency divider, which includes at least two filtering units, where a first end of each filtering unit is connected to a first end of the frequency divider, and a second end of each filtering unit is used as a second end of the frequency divider;
each filtering unit comprises at least one inductance element, and the signal transmission directions of the inductance elements at adjacent positions are opposite.
Optionally, at least one of the filter units includes at least two of the inductance elements, and in the same filter unit, signal transmission directions of the inductance elements at adjacent positions are opposite.
Optionally, the signal transmission directions of the inductive elements in the filtering units at adjacent positions are opposite; the at least two filtering units are arranged along a first direction, the filtering units at adjacent positions are the filtering units arranged adjacently along the first direction, and the first direction is an intersecting direction in which a first end of the frequency divider points to a second end.
Optionally, the number of the inductance elements in the filtering units at adjacent positions is the same, and the inductance elements in different filtering units are arranged along the first direction; the signal transmission directions of the adjacent inductance elements arranged along the first direction are opposite.
Optionally, the number of the inductance elements in the filtering units at adjacent positions is different, and the inductance elements in the same filtering unit are arranged along a second direction; the filtering unit comprises at least one first inductance element, the filtering unit arranged adjacent to the filtering unit comprises at least two second inductance elements, the overlapping area of the vertical projection of the first inductance element in the first direction and the vertical projection of one second inductance element in the first direction is larger than the overlapping area of the vertical projections of the other second inductance elements in the first direction, and the signal transmission directions of the first inductance element and one second inductance element are opposite; wherein the second direction is a direction in which the first end of the frequency divider points to the second end.
Optionally, the inductance element is a winding structure; and the winding directions of the inductive elements at adjacent positions are the same, and the winding starting ends of the inductive elements at adjacent positions are respectively a signal input end and a signal output end.
Optionally, the inductance element is a winding structure; the winding directions of the inductive elements at adjacent positions are opposite, and the winding starting ends of the inductive elements at adjacent positions are signal input ends or signal output ends.
Optionally, the filtering unit includes at least one conductive layer, and at least one conductive layer is used for forming the inductance element.
According to the technical scheme of the embodiment of the invention, the inductive elements in the frequency divider are arranged, and the signal transmission directions of the inductive elements at adjacent positions are opposite, so that mutual interference between magnetic fields generated by the inductive elements at adjacent positions can be reduced, further, the mutual interference between filtering units can be reduced, and the isolation between different channels of the frequency divider is improved.
Drawings
Fig. 1 is a schematic structural diagram of a frequency divider according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a partial layout planar structure of a frequency divider according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a partial layout plan structure of another frequency divider according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a partial layout plan structure of another frequency divider according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a partial layout plan structure of another frequency divider according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a plan structure of a partial layout of another frequency divider according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a frequency divider according to an embodiment of the present invention. As shown in fig. 1, the frequency divider includes at least two filtering units 110, a first terminal of each filtering unit 110 is connected to a first terminal C1 of the frequency divider, and a second terminal of each filtering unit 110 is a second terminal C2 of the frequency divider; each filter unit 110 includes at least one inductive element L1, and the signal transmission directions of the inductive elements L1 in adjacent positions are opposite.
Specifically, the filtering unit 110 may be an LC filter. The types of filters corresponding to different filtering units 110 may be the same or different to meet the operational requirements of the frequency divider. The type of the filter may include a plurality of types, for example, the filter may be at least one of a low-pass filter, a high-pass filter, and a band-stop filter. The first terminal of each filtering unit 110 is connected to the first terminal C1 of the frequency divider, and the second terminal of each filtering unit 110 serves as a second terminal C2 of the frequency divider, so that each filtering unit 110 is connected in series between the first terminal C1 and the second terminal C2 of the frequency divider and serves as a channel of the frequency divider. Illustratively, as shown in fig. 1, the frequency divider illustratively includes a plurality of filtering units 110, a first end of each filtering unit 110 is connected to a first end C1 of the frequency divider, a second end of the first filtering unit 110 serves as a first second end C21 of the frequency divider, a second end of the second filtering unit 110 serves as a second end C22 of the frequency divider, and a second end of the nth filtering unit 110 serves as a second end C2n of the frequency divider, where the frequency divider has n channels, and each channel corresponds to one filtering unit 110.
Fig. 2 is a schematic diagram of a partial layout plan structure of a frequency divider according to an embodiment of the present invention. As shown in fig. 2, each filtering unit 110 includes at least one inductance element L1, while each filtering unit 110 includes at least one capacitance element (not shown in fig. 2), such that each filtering unit 110 constitutes a filter through the inductance L1 and the capacitance element. When each filter unit 110 includes at least one inductance element L1, the overall structure of the frequency divider includes at least two inductance elements L1, and in layout design, the signal transmission directions of the inductance elements L1 at adjacent positions are opposite, so that the directions of the magnetic fields generated by the inductance elements L1 at adjacent positions are opposite, thereby reducing mutual interference between the magnetic fields generated by the inductance elements L1 at adjacent positions, further reducing mutual interference between the filter units 110, and improving isolation between different channels of the frequency divider. The isolation between different channels of the frequency divider is used for representing the mutual interference degree between different channels. The higher the isolation between different channels of the frequency divider, the lower the degree of mutual interference between different channels of the frequency divider. When at least one filter unit 110 includes at least two inductance elements L1, the inductance elements L1 in adjacent positions may be inductance elements in the same filter unit 110, or may be inductance elements in different filter units 110.
Illustratively, as shown in fig. 2, the frequency divider is exemplarily shown to include two filtering units 110, each filtering unit 110 includes one inductive element L1, and two inductive elements L1 are adjacently disposed in the layout, i.e., two inductive elements L1 are adjacently disposed in a spatial position. By setting the signal transmission direction of one inductance element L1 to be counterclockwise and the signal transmission direction of the other inductance element L1 to be clockwise, the direction of the magnetic field generated by the inductance element L1 with the counterclockwise signal transmission direction is opposite to the direction of the magnetic field generated by the inductance element L1 with the clockwise signal transmission direction, so that mutual interference between the magnetic fields generated by the two inductance elements L1 can be reduced, mutual interference between the filter units 110 can be reduced, and the isolation between different channels of the frequency divider is improved.
According to the technical scheme of the embodiment, the inductive elements in the frequency divider are arranged, the signal transmission directions of the inductive elements at the adjacent positions are opposite, mutual interference between magnetic fields generated by the inductive elements at the adjacent positions can be reduced, then the mutual interference between the filtering units can be reduced, and the isolation degree between different channels of the frequency divider is improved.
With continued reference to fig. 2, the inductive element L1 is a wound structure; when the winding directions of the adjacent inductive elements L1 are the same, the winding start ends of the adjacent inductive elements L1 are the signal input end and the signal output end, respectively.
Specifically, the inductance element L1 may be a wire-wound structure, for example, the wire-wound structure may be a conductive coil. The winding direction of the inductance element L1 in the adjacent position may be the same, and fig. 2 exemplarily shows that the winding direction of the inductance element L1 in the adjacent position is a counterclockwise winding direction from outside to inside, or the winding direction of the inductance element L1 in the adjacent position is a clockwise winding direction from inside to outside. At this time, the winding start end of one of the inductance elements L1 in the inductance elements L1 at adjacent positions is a signal input end, the winding end is a signal output end, the winding start end of the other inductance element L1 in the inductance element L1 at adjacent positions is a signal output end, and the winding end is a signal input end, so that the signal transmission directions of the inductance elements L1 at adjacent positions are the same as the winding direction and the opposite to the winding direction, the signal transmission directions of the inductance elements L1 at adjacent positions are opposite, and mutual interference between magnetic fields generated by the inductance elements L1 at adjacent positions is reduced. The winding start end is an external start end when the inductor L1 is wound from outside to inside, and the winding end is an internal end when the inductor L1 is wound from outside to inside. Alternatively, the winding start end is an inner start end when the inductor L1 is wound from inside to outside, and the winding end is an outer end when the inductor L1 is wound from inside to outside.
In other embodiments, the winding direction of the inductance element L1 in the adjacent position may be a clockwise winding direction from outside to inside, and the winding direction of the inductance element L1 in the adjacent position is the same, which is not limited herein.
Fig. 3 is a schematic diagram of a plan structure of a partial layout of another frequency divider according to an embodiment of the present invention. As shown in fig. 3, the inductance element L1 is a winding structure; the winding directions of the adjacent inductive element L1 are opposite, and the winding start ends of the adjacent inductive element L1 are both signal input ends or signal output ends.
Specifically, the winding directions of the inductance elements L1 in adjacent positions may be opposite, and fig. 3 exemplarily shows that the winding direction of one inductance element L1 in the inductance element L1 in adjacent positions is a counterclockwise winding direction from outside to inside (or a clockwise winding direction from inside to outside), and the winding direction of the other inductance element L1 is a clockwise winding direction from outside to inside (or a counterclockwise winding direction from inside to outside), where the winding start ends of the inductance elements L1 in adjacent positions are both signal input ends, and the winding end ends are both signal output ends; or the winding start ends of the adjacent inductive elements L1 are signal output ends, the winding end ends are signal input ends, and the signal transmission direction in different inductive elements L1 is the same as the winding direction of the inductive element L1, so that the signal transmission directions of the inductive elements L1 with opposite winding directions are opposite, and mutual interference between magnetic fields generated by the inductive elements L1 in adjacent positions is reduced.
Fig. 4 is a schematic diagram of a plan structure of a partial layout of another frequency divider according to an embodiment of the present invention. As shown in fig. 4, at least one of the filter units 110 includes at least two inductive elements L1, and the signal transmission directions of the inductive elements L1 in adjacent positions are opposite in the same filter unit 110.
In particular, fig. 4 exemplarily shows that one filter unit 110 may include two inductance elements L1, and two inductance elements L1 may be adjacently disposed in space, that is, the inductance elements L1 in adjacent positions are inductance elements in the same filter unit 110. At this time, the signal transmission directions of the inductance elements L1 in adjacent positions in the same filter unit 110 may be set to be opposite, so that the directions of the magnetic fields generated by the two inductance elements L1 are opposite, thereby reducing mutual interference between the magnetic fields generated by the inductance elements L1 in adjacent positions, and improving the isolation of the filter unit 110, that is, improving the channel isolation of the frequency divider. Meanwhile, the interference of the filtering unit 110 to other filtering units 110 can be reduced, so that the isolation between different channels of the frequency divider can be improved.
It should be noted that fig. 4 only exemplarily shows that one filtering unit 110 includes two inductive elements L1, and the two inductive elements L1 in one filtering unit 110 realize signal transmission directions by opposite winding directions. In other embodiments, the two inductance elements L1 in one filtering unit 110 also realize the signal transmission direction for the signal input end and the signal output end respectively through the winding start end. In addition, one filtering unit 110 may include a plurality of inductance elements L1, and the plurality of inductance elements L1 may be disposed adjacent to each other in space, in which case, the signal transmission directions of the inductance elements L1 in adjacent positions among the plurality of inductance elements L1 may be set to be opposite. Alternatively, in other embodiments, at least two of the filter units 110 include at least two inductance elements L1, and the signal transmission directions of the at least two inductance elements L1 in each filter unit 110 may be opposite when they are spatially adjacently disposed.
Fig. 5 is a schematic diagram of a plan structure of a partial layout of another frequency divider according to an embodiment of the present invention. As shown in fig. 5, the signal transmission directions of the inductance elements L1 in the adjacent filter units 110 are opposite; at least two filtering units 110 are arranged along a first direction X, the filtering units 110 in adjacent positions are the filtering units arranged adjacently along the first direction X, and the first direction X is an intersecting direction in which the first end C1 of the frequency divider points to the second end C2.
Specifically, fig. 5 exemplarily shows that the inductance element L1 in the adjacent position is an inductance element in the adjacent filtering unit 110. When two filter units 110 are adjacently arranged, the inductance elements L1 in the adjacent filter units 110 may be adjacently arranged in spatial position, and at this time, the signal transmission directions of the inductance elements L1 in the adjacent filter units 110 may be set to be opposite, so that the directions of the magnetic fields generated by the two inductance elements L1 are opposite, thereby reducing mutual interference between the magnetic fields generated by the two inductance elements L1, and thus improving the isolation between the filter units 110.
It should be noted that fig. 5 only exemplarily shows that the frequency divider includes two filtering units 110. In other embodiments, the frequency divider may include a plurality of filtering units 110, and the filtering units 110 are arranged along the first direction X and adjacent to each other. The signal transmission direction of the inductance element L1 in the adjacent position filter unit 110 may be set to be opposite.
With continued reference to fig. 5, the number of the inductive elements L1 in the adjacent filter units 110 is the same, and the inductive elements L1 in different filter units 110 are arranged along the first direction X; the signal transmission directions of the adjacent inductance elements L1 arranged along the first direction X are opposite.
Specifically, fig. 5 exemplarily shows that the number of the inductance elements L1 in the adjacent filtering units 110 is two. At least one inductance element L1 in each filter unit 110 may be arranged along the same direction, so that the inductance elements L1 in the filter units 110 each have an inductance element L1 arranged adjacently in the arrangement direction of the inductance elements L1 in different filter units 110, and the inductance elements L1 arranged adjacently belong to different filter units 110. By arranging the inductance elements L1 in different filter units 110 in the direction of arrangement, the signal transmission directions of the inductance elements L1 arranged adjacently are opposite, so that at least one inductance element L1 in different filter units 110 is opposite to the signal transmission direction of the inductance element L1 arranged adjacently, and the inductance elements L1 in different filter units 110 can generate magnetic fields with opposite magnetic field directions, thereby better reducing mutual interference between the magnetic fields generated by two inductance elements L1, further improving the isolation between the filter units 110, that is, improving the isolation between different channels of the frequency divider. Illustratively, each of the filter units 110 includes two inductance elements L1 arranged along a second direction Y, where the second direction Y is a direction in which the first end C1 of the frequency divider points to the second end C2. The inductance elements L1 in different filter units 110 are arranged along the first direction X, so that all the inductance elements L1 in different filter units 110 may be respectively arranged in a matrix along the first direction X and the second direction Y, for example, the first direction X may be a row direction, and the second direction Y may be a column direction. At this time, the signal transmission directions of the inductance elements L1 adjacently disposed in the same row in different filter units 110 may be set to be opposite, so that all the inductance elements L1 in the same filter unit 110 may be opposite to the signal transmission direction of the inductance element L1 adjacently disposed, and the inductance elements L1 in different filter units 110 may generate magnetic fields with opposite magnetic field directions, thereby reducing mutual interference between the magnetic fields generated by two inductance elements L1 better, and further improving the isolation between the filter units 110.
It should be noted that fig. 5 exemplarily shows that there are two inductance elements L1 in each filtering unit 110. In other embodiments, the number of the inductance elements L1 in each filtering unit 110 may be multiple, and only the number of the different filtering units 110 is required to be the same.
Fig. 6 is a schematic diagram of a plan structure of a partial layout of another frequency divider according to an embodiment of the present invention. As shown in fig. 6, the number of the inductance elements L11 in the filter units 110 at adjacent positions is different, and the inductance elements L1 in the same filter unit 110 are arranged along the second direction Y; a filter unit 110 includes at least one first inductance element L11, the filter unit 110 disposed adjacent to the filter unit 110 includes at least two second inductance elements L12, the overlapping area of the vertical projection of the first inductance element L11 in the first direction X and the vertical projection of one second inductance element L12 in the first direction X is larger than the overlapping area of the vertical projections of the other second inductance elements L12 in the first direction X, and the signal transmission directions of the first inductance element L11 and one second inductance element L12 are opposite; wherein the second direction Y is a direction in which the first end C1 of the frequency divider points to the second end C2.
Specifically, unlike fig. 5, the number of inductance elements L1 in the filter unit 110 in the adjacent position is different. At this time, at least one of the inductance elements L1 in different filter units 110 has no inductance element L1 disposed adjacently in the arrangement direction of the inductance element L1 in different filter units 110. At this time, whether the inductance element L1 in one filtering unit 110 is adjacent to the inductance element L1 in another adjacent filtering unit 110 can be determined according to the overlapping area of the perpendicular projection of the inductance element L1 in the first direction X, and then when the inductance elements L1 in different filtering units 110 are adjacently arranged, the signal transmission directions of the two inductance elements L1 are opposite, so that the inductance elements L1 in different filtering units 110 can generate magnetic fields with opposite magnetic field directions more, thereby better reducing the mutual interference between the magnetic fields generated by the two inductance elements L1, and further improving the isolation between the filtering units 110, that is, improving the isolation between different channels of the frequency divider. Exemplarily, fig. 6 shows that the frequency divider includes two filtering units 110, wherein one filtering unit 110 includes one first inductance element L11, the other filtering unit 110 includes two second inductance elements L12, the first inductance element L11 and the second inductance element L12 are arranged along the first direction X, and the two second inductance elements L12 are arranged along the second direction Y. The overlapping area of the vertical projection of the first inductance element L11 and the first second inductance element L12 in the first direction X is larger than the overlapping area of the vertical projection of the first inductance element L11 and the second inductance element L12 in the first direction X, so that the first inductance element L11 and the first second inductance element L12 are determined to be inductance elements adjacently disposed in different filter units 110, and at this time, the signal transmission directions of the first inductance element L11 and the first second inductance element L12 may be set to be opposite, so that the directions of the magnetic fields generated by the first inductance element L11 and the first second inductance element L12 are opposite, thereby better reducing the mutual interference between the magnetic fields generated by the two inductance elements L1, and further improving the isolation between the filter units 110.
On the basis of the technical scheme, the filtering unit comprises at least one conductive layer, and the at least one conductive layer is used for forming the inductance element.
In particular, the inductive element in the filter unit may be formed by a conductive layer. Illustratively, the conductive layer may be a metal layer. When the filtering unit comprises a conductive layer, the inductance element is formed in the conductive layer, and the inductance element is a two-dimensional inductance, so that the forming process of the inductance element is simplified. When the filter unit comprises at least two conductive layers, the inductance element can be formed in the at least two conductive layers, and the inductance element is a three-dimensional inductance, so that the area occupied by the inductance element is reduced.
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 described 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 (8)
1. A frequency divider, comprising at least two filtering units, wherein a first end of each filtering unit is connected to a first end of the frequency divider, and a second end of each filtering unit is used as a second end of the frequency divider;
each filtering unit comprises at least one inductance element, and the signal transmission directions of the inductance elements at adjacent positions are opposite.
2. The frequency divider according to claim 1, wherein at least one of the filtering units comprises at least two of the inductive elements, and the signal transmission directions of the inductive elements in adjacent positions are opposite in the same filtering unit.
3. The frequency divider according to claim 1 or 2, wherein the signal transmission directions of the inductive elements in the filtering units of adjacent positions are opposite; the at least two filtering units are arranged along a first direction, the filtering units at adjacent positions are the filtering units arranged adjacently along the first direction, and the first direction is an intersecting direction in which a first end of the frequency divider points to a second end.
4. The frequency divider according to claim 3, wherein the number of the inductive elements in the filtering units at adjacent positions is the same, and the inductive elements in different filtering units are arranged along the first direction; the signal transmission directions of the adjacent inductance elements arranged along the first direction are opposite.
5. The frequency divider according to claim 3, wherein the number of the inductive elements in the filtering units in adjacent positions is different, and the inductive elements in the same filtering unit are arranged along a second direction; the filtering unit comprises at least one first inductance element, the filtering unit arranged adjacent to the filtering unit comprises at least two second inductance elements, the overlapping area of the vertical projection of the first inductance element in the first direction and the vertical projection of one second inductance element in the first direction is larger than the overlapping area of the vertical projections of the other second inductance elements in the first direction, and the signal transmission directions of the first inductance element and one second inductance element are opposite; wherein the second direction is a direction in which the first end of the frequency divider points to the second end.
6. The frequency divider of claim 1, wherein the inductive element is a wire-wound structure; and the winding directions of the inductive elements at adjacent positions are the same, and the winding starting ends of the inductive elements at adjacent positions are respectively a signal input end and a signal output end.
7. The frequency divider of claim 1, wherein the inductive element is a wire-wound structure; the winding directions of the inductive elements at adjacent positions are opposite, and the winding starting ends of the inductive elements at adjacent positions are signal input ends or signal output ends.
8. The divider according to claim 1, characterized in that the filtering unit comprises at least one conductive layer, at least one of said conductive layers being used to form the inductive element.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210554547.0A CN114826251A (en) | 2022-05-19 | 2022-05-19 | Frequency divider |
| PCT/CN2022/114380 WO2023221319A1 (en) | 2022-05-19 | 2022-08-24 | Frequency divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210554547.0A CN114826251A (en) | 2022-05-19 | 2022-05-19 | Frequency divider |
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| Publication Number | Publication Date |
|---|---|
| CN114826251A true CN114826251A (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210554547.0A Pending CN114826251A (en) | 2022-05-19 | 2022-05-19 | Frequency divider |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114826251A (en) |
| WO (1) | WO2023221319A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023221319A1 (en) * | 2022-05-19 | 2023-11-23 | 安徽安努奇科技有限公司 | Frequency divider |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3933650B2 (en) * | 2004-06-11 | 2007-06-20 | シャープ株式会社 | Low-pass filter circuit |
| US8035461B1 (en) * | 2007-12-26 | 2011-10-11 | Nortel Networks Limited | Inductive filter and method of reducing vibration sensitivity |
| CN202178378U (en) * | 2010-01-19 | 2012-03-28 | 株式会社村田制作所 | High frequency device and communication terminal equipment |
| CN111564426A (en) * | 2020-05-29 | 2020-08-21 | 深圳陶陶科技有限公司 | Radio frequency front-end module, radio frequency communication device and electronic equipment |
| CN114826251A (en) * | 2022-05-19 | 2022-07-29 | 安徽安努奇科技有限公司 | Frequency divider |
-
2022
- 2022-05-19 CN CN202210554547.0A patent/CN114826251A/en active Pending
- 2022-08-24 WO PCT/CN2022/114380 patent/WO2023221319A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023221319A1 (en) * | 2022-05-19 | 2023-11-23 | 安徽安努奇科技有限公司 | Frequency divider |
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| WO2023221319A1 (en) | 2023-11-23 |
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