CN114497954A - Power divider and system - Google Patents
Power divider and system Download PDFInfo
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- CN114497954A CN114497954A CN202210078384.3A CN202210078384A CN114497954A CN 114497954 A CN114497954 A CN 114497954A CN 202210078384 A CN202210078384 A CN 202210078384A CN 114497954 A CN114497954 A CN 114497954A
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- capacitor
- power divider
- isolation
- resistor
- inductor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
Abstract
One embodiment of the present invention discloses a power divider and a system, wherein the power divider comprises: the first end of the first capacitor is grounded, the second end of the first capacitor is connected with one end of the second capacitor, the first end of the second capacitor is connected with the input port, the second end of the second capacitor is grounded, the first end of the third capacitor is grounded, the second end of the third capacitor is connected with the first end of the isolation unit, the first end of the fourth capacitor is connected with the second end of the isolation unit, the second end of the fourth capacitor is grounded, the first end of the first inductor is connected with the second end of the first capacitor, the second end of the first inductor is connected with the second end of the third capacitor, the first end of the second inductor is connected with the first end of the third capacitor, the second end of the fourth capacitor is connected with the first end of the fourth capacitor, the first end and the third end of the isolation unit are connected with the first microwave signal output port, and the second end and the fourth end of the isolation unit are connected with the second microwave signal output port.
Description
Technical Field
The invention relates to the field of monolithic microwave integrated circuits. And more particularly to a power divider and system.
Background
A power divider (power divider for short) is a device capable of dividing one input signal into two or more identical or different output signals, and is an indispensable functional unit in a radio frequency circuit, and in addition to a commonly used two-way power divider, power dividers with other dividing numbers, such as a three-way power divider, are often required in an antenna array feed network and a power synthesis circuit. In the occasion with low requirement on power capacity, the microstrip line three-way power divider has the advantages of light weight, low cost, simple structure and the like, and is widely applied to the fields of mobile communication, aerospace, radar detection and the like.
According to different circuits, the power divider can be divided into a simple T-shaped power divider and an isolation power divider. There is no isolation resistance between each output end of the simple T-shaped power divider, which can realize good power distribution ratio under a larger bandwidth, but the isolation degree is worse. The isolation resistors are arranged between the output ends of the isolation power divider, so that the isolation degree is high, but the standing wave characteristic of the isolation power divider needs to be improved.
Disclosure of Invention
In view of the above, a first embodiment of the present invention provides a power divider, including:
a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first inductor, a second inductor and an isolation unit,
the first end of the first capacitor is grounded, the second end of the first capacitor is connected with one end of the second capacitor,
the first end of the second capacitor is connected with the input port, the second end of the second capacitor is grounded,
the first end of the third capacitor is grounded, the second end of the third capacitor is connected with the first end of the isolation unit,
the first end of the fourth capacitor is connected with the second end of the isolation unit, the second end is grounded,
a first end of the first inductor is connected with a second end of the first capacitor, a second end of the first inductor is connected with a second end of the third capacitor,
the first end of the second inductor is connected with the first end of the third capacitor, the second end of the second inductor is connected with the first end of the fourth capacitor,
and the first end and the third end of the isolation unit are connected and are connected with the first microwave signal output port, and the second end and the fourth end of the isolation unit are connected and are connected with the second microwave signal output port.
In a specific embodiment, the isolation unit includes a first isolation circuit and a second isolation circuit,
the first and second isolation circuits are connected in parallel such that a resonance point is introduced between the first and second microwave output ports.
In a specific embodiment, the first isolation circuit comprises a fifth capacitor, a first resistor and a sixth capacitor, wherein,
the first end of the fifth capacitor is connected with the first end of the third capacitor, the second end of the fifth capacitor is connected with the first end of the sixth capacitor through the first resistor,
and the second end of the sixth capacitor is connected with the first end of the fourth capacitor.
In a specific embodiment, the second isolation circuit comprises a second resistor, a seventh capacitor, and a third resistor, wherein,
the first end of the second resistor is connected with the first end of the fifth capacitor and the first microwave output port, the second end of the second resistor is connected with the first end of the seventh capacitor,
and a first end of the third resistor is connected with a second end of the seventh capacitor, and a second end of the third resistor is connected with a second end of the sixth capacitor and connected with the second microwave output port.
In a specific embodiment, the input port, the first microwave output port and the second microwave output port are all 50 ohm microstrip transmission lines.
A power distribution system according to a second embodiment of the present invention includes:
the power divider according to the first embodiment,
and the microwave signal generator is used for providing a microwave signal for the power divider.
The invention has the following beneficial effects:
the invention provides a power divider and a system, wherein a resonance point is introduced between a first microwave output port and a second microwave output port, so that the purpose of improving the isolation degree of the output ports is achieved, the electrical property is improved greatly, the isolation degree between the output ports is obviously improved, and the input-output standing wave ratio is low; and the lumped parameter layout mode is adopted, so that the size of the chip is greatly reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 shows a schematic diagram of a power divider according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a power distribution system according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The power divider is a very important microwave passive device in a wireless communication system, and has wide application in antenna array feed systems, power amplifiers and wireless local area networks. Its basic function is to divide one path of signal input energy into two or more paths of output equal or unequal energy, each path generally has several dB of attenuation, and the signal frequency is different, and the distributor is different, and the attenuation is also different.
In order to provide a power divider with high isolation, small insertion loss and good standing wave, as shown in fig. 1, an embodiment of the present invention provides a power divider, including:
a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first inductor L1, a second inductor L2 and an isolation unit M1,
the first end of the first capacitor C1 is grounded, the second end is connected with one end of the second capacitor C2,
the second capacitor C2 has a first terminal connected to the input port, a second terminal connected to ground,
the first end of the third capacitor C3 is grounded, the second end is connected with the first end of the isolation unit M1,
the first end of the fourth capacitor C4 is connected to the second end of the isolation unit M1, the second end is grounded,
the first end of the first inductor L1 is connected to the second end of the first capacitor C1, the second end is connected to the second end of the third capacitor C3,
a first terminal of the second inductor L2 is connected to a first terminal of the third capacitor C3, a second terminal is connected to a first terminal of the fourth capacitor C4,
and the first end and the third end of the isolation unit M1 are connected with the first microwave signal output port, and the second end and the fourth end of the isolation unit M1 are connected with the second microwave signal output port.
In a specific embodiment, the isolation unit includes a first isolation circuit M10 and a second isolation circuit M12,
the first isolation circuit and the second isolation circuit are connected in parallel, so that a resonance point is introduced between the first microwave output port and the second microwave output port, and the purpose of improving the isolation degree of the output ports is achieved.
More specifically, the first isolation circuit includes a fifth capacitor C5, a first resistor R1, and a sixth capacitor C6, wherein,
the first end of the fifth capacitor C5 is connected with the first end of the third capacitor C3, the second end is connected with the first end of the sixth capacitor C6 through the first resistor R1,
the second terminal of the sixth capacitor C6 is connected to the first terminal of the fourth capacitor C4.
The second isolation circuit comprises a second resistor R2, a seventh capacitor C7, and a third resistor R3, wherein,
a first end of the second resistor R2 is connected with a first end of the fifth capacitor C5 and with the first microwave output port, a second end is connected with a first end of the seventh capacitor C7,
and a first end of the third resistor R3 is connected with a second end of the seventh capacitor C7, and a second end of the third resistor R3 is connected with a second end of the sixth capacitor C6 and is connected with the second microwave output port.
In a specific embodiment, the input port, the first microwave output port and the second microwave output port are all 50 ohm microstrip transmission lines.
In addition, as can be understood by those skilled in the art, under the teaching of the present embodiment, the object of the present invention can also be achieved by changing the circuit structure between the output ports to introduce a resonance point and further improve the isolation between the output ports as in the above embodiments.
Compared with the existing power divider, the power divider provided by the embodiment has the advantages that the electrical performance is greatly improved, the isolation between output ports is obviously improved, and the input-output standing wave ratio is low; and the lumped parameter layout mode is adopted, so that the size of the chip is greatly reduced.
Corresponding to the power divider provided in the foregoing embodiment, as shown in fig. 2, an embodiment of the present invention further provides a power dividing system, including: the power divider and the microwave signal generator described in the above embodiments are configured to provide a microwave signal for the power divider.
Since the power dividing system provided in the embodiments of the present application corresponds to the power divider provided in the above several embodiments, the foregoing embodiments are also applicable to the power dividing system provided in this embodiment, and detailed description is not provided in this embodiment.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (6)
1. A power divider, comprising:
a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a first inductor, a second inductor and an isolation unit,
the first end of the first capacitor is grounded, the second end of the first capacitor is connected with one end of the second capacitor,
the first end of the second capacitor is connected with the input port, the second end is grounded,
the first end of the third capacitor is grounded, the second end of the third capacitor is connected with the first end of the isolation unit,
the first end of the fourth capacitor is connected with the second end of the isolation unit, the second end is grounded,
a first end of the first inductor is connected with a second end of the first capacitor, a second end of the first inductor is connected with a second end of the third capacitor,
the first end of the second inductor is connected with the first end of the third capacitor, the second end of the second inductor is connected with the first end of the fourth capacitor,
and the first end and the third end of the isolation unit are connected and are connected with the first microwave signal output port, and the second end and the fourth end of the isolation unit are connected and are connected with the second microwave signal output port.
2. The power divider of claim 1, wherein the isolation unit comprises a first isolation circuit and a second isolation circuit,
the first and second isolation circuits are connected in parallel such that a resonance point is introduced between the first and second microwave output ports.
3. The power divider of claim 2, wherein the first isolation circuit comprises a fifth capacitor, a first resistor, and a sixth capacitor, wherein,
the first end of the fifth capacitor is connected with the first end of the third capacitor, the second end of the fifth capacitor is connected with the first end of the sixth capacitor through the first resistor,
and the second end of the sixth capacitor is connected with the first end of the fourth capacitor.
4. The power divider of claim 3, wherein the second isolation circuit comprises a second resistor, a seventh capacitor, and a third resistor, wherein,
the first end of the second resistor is connected with the first end of the fifth capacitor and the first microwave output port, the second end of the second resistor is connected with the first end of the seventh capacitor,
and the first end of the third resistor is connected with the second end of the seventh capacitor, and the second end of the third resistor is connected with the second end of the sixth capacitor and is connected with the second microwave output port.
5. The power divider of claim 1, wherein the input port, the first microwave output port, and the second microwave output port are 50 ohm microstrip transmission lines.
6. A power division system, comprising:
the power divider of any one of claims 1-5,
and the microwave signal generator is used for providing a microwave signal for the power divider.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210078384.3A CN114497954A (en) | 2022-01-24 | 2022-01-24 | Power divider and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210078384.3A CN114497954A (en) | 2022-01-24 | 2022-01-24 | Power divider and system |
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| CN202210078384.3A Pending CN114497954A (en) | 2022-01-24 | 2022-01-24 | Power divider and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115275545A (en) * | 2022-08-15 | 2022-11-01 | 南通大学 | Compact absorption type filtering power divider |
| CN117525799A (en) * | 2024-01-04 | 2024-02-06 | 南京迈矽科微电子科技有限公司 | Compact power divider with high isolation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078736A (en) * | 2013-03-26 | 2014-10-01 | 中国科学院微电子研究所 | Miniaturized wideband power splitter circuit |
| CA2995969A1 (en) * | 2018-02-22 | 2018-05-23 | Mitchell B. Miller | A system and method for charging electrostatic devices utilizing displacement current, referred to as deflection converter |
| EP3379642A1 (en) * | 2017-03-21 | 2018-09-26 | KM Verwaltungs GmbH | Waveguide filter |
| CN207925646U (en) * | 2018-02-09 | 2018-09-28 | 成都海微特科技有限公司 | A kind of miniature ultra wide band power splitter |
| CN113097679A (en) * | 2021-03-10 | 2021-07-09 | 西安电子科技大学 | Small Wilkinson power divider used in MMIC circuit |
| CN214900816U (en) * | 2021-04-28 | 2021-11-26 | 深圳振华富电子有限公司 | Power divider circuit, power divider and electronic equipment based on thin film IPD technology |
-
2022
- 2022-01-24 CN CN202210078384.3A patent/CN114497954A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078736A (en) * | 2013-03-26 | 2014-10-01 | 中国科学院微电子研究所 | Miniaturized wideband power splitter circuit |
| EP3379642A1 (en) * | 2017-03-21 | 2018-09-26 | KM Verwaltungs GmbH | Waveguide filter |
| CN207925646U (en) * | 2018-02-09 | 2018-09-28 | 成都海微特科技有限公司 | A kind of miniature ultra wide band power splitter |
| CA2995969A1 (en) * | 2018-02-22 | 2018-05-23 | Mitchell B. Miller | A system and method for charging electrostatic devices utilizing displacement current, referred to as deflection converter |
| CN113097679A (en) * | 2021-03-10 | 2021-07-09 | 西安电子科技大学 | Small Wilkinson power divider used in MMIC circuit |
| CN214900816U (en) * | 2021-04-28 | 2021-11-26 | 深圳振华富电子有限公司 | Power divider circuit, power divider and electronic equipment based on thin film IPD technology |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115275545A (en) * | 2022-08-15 | 2022-11-01 | 南通大学 | Compact absorption type filtering power divider |
| CN115275545B (en) * | 2022-08-15 | 2024-01-12 | 南通大学 | Compact absorption type filtering power divider |
| CN117525799A (en) * | 2024-01-04 | 2024-02-06 | 南京迈矽科微电子科技有限公司 | Compact power divider with high isolation |
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