CN213846637U - Vector synthesis switch phase shifter - Google Patents
Vector synthesis switch phase shifter Download PDFInfo
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- CN213846637U CN213846637U CN202022942324.0U CN202022942324U CN213846637U CN 213846637 U CN213846637 U CN 213846637U CN 202022942324 U CN202022942324 U CN 202022942324U CN 213846637 U CN213846637 U CN 213846637U
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Abstract
The utility model discloses a vector composition switch looks ware belongs to electronic circuit design technical field. The vector synthesis switch phase shifter comprises an orthogonal phase splitter, a 180-degree phase shift switch, a combiner and a switch phase shifter; the switch phase shifter is a multi-bit switch phase shifter and comprises a plurality of switch phase shifting units which are connected in a cascade mode, so that multi-bit digital control is achieved, namely the switch phase shifter is adopted to achieve the phase shifting characteristic in the phase shifting range from 0 degrees to 90 degrees, and the vector synthesis technology is adopted from 90 degrees to 360 degrees to achieve the phase shifting characteristic. When the 360-degree phase shifting range is realized, the phase shifting device has better linearity and smaller area, solves the problem that the traditional switch-type phase shifter adopts a multi-stage cascade mode to cause mutual influence among all stages, and can realize the high-precision phase shifting function.
Description
Technical Field
The utility model belongs to the technical field of the electronic circuit design, more specifically relates to a vector synthesis switch moves looks ware.
Background
The application of phased array technology in wireless communication and radar is becoming a hot spot of research in this field. The phase shifter is a key circuit in the phased array radar, the performance of the phase shifter plays a crucial role in the whole radar system, and the phase shifter can be generally divided into an analog type and a digital type according to whether the phase can be continuously adjusted or not. The digital type has the advantages of stable work, no influence of external environment and the like, and is widely applied to the phased array radar. The digital phase shifter is basically classified into a reflection phase shifter, a vector synthesis phase shifter, and a switching phase shifter.
The switch-type phase shifter has the characteristics of small area, simple structure, low power consumption and the like, is generally composed of a plurality of different phase shifting units, influences among all levels are mutually influenced, the high-precision phase shifting function is not easy to realize, and the bandwidth is limited. The vector synthesis phase shifter can be applied to a broadband circuit, has high phase shift precision and small phase error and amplitude error, and is generally applied to a monolithic integrated circuit. The vector synthesis phase shifter is divided into an active phase shifter and a passive phase shifter, and the active vector synthesis phase shifter usually needs to use a variable gain amplifier to change the amplitude of signals of an I path and a Q path to realize a phase shifting function and is often limited by linearity. The passive vector synthesis shift usually needs to use an attenuator to realize the phase shift function, and has the characteristic of low power consumption, but the phase shift precision is limited by the dynamics and the stepping of the attenuator. In order to realize high phase-shifting precision, passive vector synthesis shift usually needs to use an attenuator with small step and large dynamic range, and usually needs to use a transmission line structure to improve the step and precision of the attenuator, so that a larger chip area is usually occupied, and on-chip integration is not easy to realize.
The traditional active vector synthesis phase shifter realizes the phase shifting function by using a variable gain amplifier to change the signal amplitude of an I path and a Q path, and the linearity is low. The traditional passive vector synthesis phase shifter has large area and is difficult to realize on-chip integration; in order to realize the phase shifting characteristic with large range and high precision, the traditional switch-type phase shifter is composed of a plurality of different phase shifting units, the phases are mutually influenced, and the phase shifting function with high precision is not easy to realize.
SUMMERY OF THE UTILITY MODEL
For solving the not enough that exists among the prior art, the utility model aims to provide a vector synthesis switch moves looks ware adopts multibit digital control, and 0 to 90 phase shift within range adopts the switch type to move looks ware and realizes shifting the phase characteristic, and 90 to 360 adopt vector synthesis technique to realize shifting the phase characteristic, when realizing 360 phase shift ranges, has better linearity and littleer area.
The technical scheme of the utility model as follows.
A vector synthesis switch phase shifter comprises an orthogonal phase splitter, a 180-degree phase shift switch, a combiner and a switch phase shifter;
the switch phase shifter is a multi-bit switch phase shifter and comprises a plurality of switch phase shifting units which are connected in cascade;
the 180 DEG phase-shift switch comprises: a first 180 DEG phase shift switch and a second 180 DEG phase shift switch.
Preferably, the first and second electrodes are formed of a metal,
the quadrature phase splitter, the 180-degree phase shift switch, the combiner and the switch phase shifter are sequentially cascaded;
the input signal enters the vector synthesis switch phase shifter from the quadrature phase splitter, then is input to the combiner through the first 180-degree phase shift switch by the I path, and is input to the combiner through the second 180-degree phase shift switch by the Q path, the two paths of signals are converged by the combiner and then input to the switch phase shift unit, and finally the output signal of the vector synthesis switch phase shifter is output by the switch phase shift unit.
Preferably, the first and second electrodes are formed of a metal,
the switch phase shifter, the quadrature phase splitter, the 180-degree phase shifting switch and the combiner are sequentially cascaded;
the input signal enters the vector synthesis switch phase shifter from the switch phase shifter, then passes through the quadrature phase splitters respectively, then is input into the combiner through the first 180-degree phase shift switch by the I path and is input into the combiner through the second 180-degree phase shift switch by the Q path, and finally the output signal of the vector synthesis switch phase shifter is output after the two paths of signals are converged by the combiner.
Preferably, the first and second electrodes are formed of a metal,
the quadrature phase splitter adopts a Lange coupler structure.
Preferably, the first and second electrodes are formed of a metal,
the first 180-degree phase shift switch and the second 180-degree phase shift switch respectively comprise four mutually cross-coupled triodes.
Preferably, the first and second electrodes are formed of a metal,
the combiner is in the form of a Wilkinson power divider.
The beneficial effects of the utility model reside in that, compare with prior art:
1. better linearity and smaller area;
2. the phase shift characteristic is realized by adopting a vector synthesis technology at 90-360 degrees, the problem that the mutual influence between all the levels of the traditional switch-type phase shifter is caused by adopting a multi-level cascade mode is solved, the phase shift characteristic is realized by adopting the switch-type phase shifter within the phase shift range of 0-90 degrees, and the high-precision phase shift function can be realized.
Drawings
Fig. 1 is a schematic circuit diagram of a vector combination switch phase shifter according to the present invention;
fig. 2 is a schematic circuit diagram of another vector combining switch phase shifter of the present invention;
fig. 3 is a circuit diagram of a combiner in the vector combination switch phase shifter of the present invention.
Detailed Description
The present application is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
A vector synthesis switch phase shifter comprises an orthogonal phase splitter, a 180-degree phase shift switch, a combiner and a switch phase shifter.
The switch phase shifter is a multi-bit switch phase shifter and comprises a plurality of switch phase shifting units which are connected in cascade.
In order to realize a large phase shift range and high phase shift precision, a traditional switch-type phase shifter needs to adopt a multi-stage cascade mode, all stages of the traditional switch-type phase shifter are mutually influenced, and the high-precision phase shift function is not easy to realize; the multi-bit switch phase-shifting unit reduces the number of stages of switch phase-shifting, thereby greatly reducing the mutual influence caused by the conduction and the closing of each stage of phase-shifting switch in the phase-shifting process, and realizing the characteristic of multi-bit high phase-shifting precision by cascading with the front-stage module.
The 180 DEG phase-shift switch comprises: a first 180 DEG phase shift switch and a second 180 DEG phase shift switch.
The 180-degree phase-shifting switch is adopted to replace an active gain amplifier or an attenuator in the traditional vector synthesis phase shifter, so that the phase-shifting function in a 90-degree stepping 360-degree phase-shifting range can be realized, the linearity is good, and the area is small.
In particular, the amount of the solvent to be used,
referring to fig. 1, a quadrature phase splitter, a 180 ° phase shift switch, a combiner and a switch phase shifter are cascaded in sequence.
The input signal enters the vector synthesis switch phase shifter from the quadrature phase splitter, then is input to the combiner through the first 180-degree phase shift switch by the I path, and is input to the combiner through the second 180-degree phase shift switch by the Q path, the two paths of signals are converged by the combiner and then input to the switch phase shift unit, and finally the output signal of the vector synthesis switch phase shifter is output by the switch phase shift unit.
In particular, the amount of the solvent to be used,
referring to fig. 2, the switch phase shifter, the quadrature phase splitter, the 180 ° phase shift switch, and the combiner are cascaded in sequence.
The input signal enters the vector synthesis switch phase shifter from the switch phase shifter, then passes through the quadrature phase splitters respectively, then is input into the combiner through the first 180-degree phase shift switch by the I path and is input into the combiner through the second 180-degree phase shift switch by the Q path, and finally the output signal of the vector synthesis switch phase shifter is output after the two paths of signals are converged by the combiner.
In particular, the amount of the solvent to be used,
the quadrature phase splitter adopts a Lange coupler structure.
It should be noted that the structure of the quadrature phase splitter includes, but is not limited to, a lange coupler structure, the structure adopted in the preferred embodiment is a non-limiting preferred choice, and those skilled in the art can select the structure of the quadrature phase splitter according to the circuit design requirements.
In particular, the amount of the solvent to be used,
referring to fig. 3, each of the first 180 ° phase shift switch and the second 180 ° phase shift switch includes four transistors cross-coupled to each other.
It should be noted that the structure of the 180 ° phase shift switch includes, but is not limited to, four transistors cross-coupled to each other, the structure adopted by the preferred embodiment is a non-limiting preferred choice, and those skilled in the art can select the structure of the 180 ° phase shift switch according to the circuit design requirement.
In particular, the amount of the solvent to be used,
the combiner is in the form of a Wilkinson power divider.
It should be noted that the structure of the combiner includes, but is not limited to, the wilkinson power divider, the structure adopted in the preferred embodiment is a non-limiting preferred choice, and those skilled in the art can select the structure of the combiner according to the circuit design requirement. The beneficial effects of the utility model reside in that, compare with prior art:
1. better linearity and smaller area;
2. the phase shift characteristic is realized by adopting a vector synthesis technology at 90-360 degrees, the problem that the mutual influence between all the levels of the traditional switch-type phase shifter is caused by adopting a multi-level cascade mode is solved, the phase shift characteristic is realized by adopting the switch-type phase shifter within the phase shift range of 0-90 degrees, and the high-precision phase shift function can be realized.
The applicant of the present invention has made detailed description and description of the embodiments of the present invention with reference to the drawings, but those skilled in the art should understand that the above embodiments are only preferred embodiments of the present invention, and the detailed description is only for helping the reader to better understand the spirit of the present invention, and not for limiting the protection scope of the present invention, on the contrary, any improvement or modification made based on the spirit of the present invention should fall within the protection scope of the present invention.
Claims (6)
1. A vector synthesis switch phase shifter, characterized in that,
the vector synthesis switch phase shifter comprises an orthogonal phase splitter, a 180-degree phase shift switch, a combiner and a switch phase shifter;
the switch phase shifter is a multi-bit switch phase shifter and comprises a plurality of switch phase shifting units which are connected in cascade;
the 180 DEG phase-shift switch comprises: a first 180 DEG phase shift switch and a second 180 DEG phase shift switch.
2. The vector composition switched phase shifter of claim 1,
the quadrature phase splitter, the 180-degree phase shift switch, the combiner and the switch phase shifter are sequentially cascaded;
the input signal enters the vector synthesis switch phase shifter from the quadrature phase splitter, then is input to the combiner through the first 180-degree phase shift switch by the I path, and is input to the combiner through the second 180-degree phase shift switch by the Q path, the two paths of signals are converged by the combiner and then input to the switch phase shift unit, and finally the output signal of the vector synthesis switch phase shifter is output by the switch phase shift unit.
3. The vector composition switched phase shifter of claim 1,
the switch phase shifter, the quadrature phase splitter, the 180-degree phase shifting switch and the combiner are sequentially cascaded;
the input signal enters the vector synthesis switch phase shifter from the switch phase shifter, then passes through the quadrature phase splitters respectively, then is input into the combiner through the first 180-degree phase shift switch by the I path and is input into the combiner through the second 180-degree phase shift switch by the Q path, and finally the output signal of the vector synthesis switch phase shifter is output after the two paths of signals are converged by the combiner.
4. The vector composition switched phase shifter of claim 2 or 3,
the quadrature phase splitter adopts a Lange coupler structure.
5. The vector composition switched phase shifter of claim 2 or 3,
the first 180-degree phase shift switch and the second 180-degree phase shift switch respectively comprise four mutually cross-coupled triodes.
6. The vector composition switched phase shifter of claim 2 or 3,
the combiner is in the form of a Wilkinson power divider.
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| CN202022942324.0U CN213846637U (en) | 2020-12-11 | 2020-12-11 | Vector synthesis switch phase shifter |
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| CN202022942324.0U CN213846637U (en) | 2020-12-11 | 2020-12-11 | Vector synthesis switch phase shifter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113783550A (en) * | 2021-11-12 | 2021-12-10 | 成都明夷电子科技有限公司 | High-precision numerical control phase shifter for K wave band and phase shifting method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113783550A (en) * | 2021-11-12 | 2021-12-10 | 成都明夷电子科技有限公司 | High-precision numerical control phase shifter for K wave band and phase shifting method thereof |
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