CN112350689B - Ultra-wideband digital control phase shifting device and phase control method - Google Patents
Ultra-wideband digital control phase shifting device and phase control method Download PDFInfo
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- CN112350689B CN112350689B CN202011195638.7A CN202011195638A CN112350689B CN 112350689 B CN112350689 B CN 112350689B CN 202011195638 A CN202011195638 A CN 202011195638A CN 112350689 B CN112350689 B CN 112350689B
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- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/08—Networks for phase shifting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides an ultra-wideband digital control phase shifting device and a phase control method. The device comprises a processing module and a phase shifting module which are connected with each other, wherein the phase shifting module comprises a plurality of phase shifting units, and the positions of any phase shifting units or any phase shifting units and the processing module can be interchanged; the processing module comprises a power divider, two digital variable gain amplifiers and a 3dB coupler, wherein the output ends of the power divider are respectively connected with the digital variable gain amplifiers, the output ends of the digital variable gain amplifiers are connected with the 3dB coupler, the 3dB coupler comprises two output ends, the first output end is grounded, and the second output end is used as the output end of the first module; the phase shifting unit comprises a phase shifter and switches connected in parallel at two ends of the phase shifter. In this way, the advantages of the active phase shifter and the passive phase shifter can be combined, the phase shifting precision can be controlled in a digital control mode, and the advantages of low power consumption, low loss, high precision and flexible use are achieved.
Description
Technical Field
Embodiments of the present invention generally relate to the field of phase control, and more particularly, to an ultra wideband digitally controlled phase shifting device and a phase control method.
Background
Phased array is a key technology of modern radars and 5G, the phased array radars form an antenna array by utilizing a plurality of antenna units, and the phase distribution of feed signals of the antenna array is changed by controlling the working state of a phase shifter so as to realize space beam scanning. As a core device of the phased array, the phase shifter needs to meet the requirements of high precision, low loss, miniaturization and the like.
Common phase shifters are divided into two types, namely a passive phase shifter and an active phase shifter, wherein the passive phase shifter has a simple structure and lower power consumption, but has larger area and larger insertion loss; the active phase shifter has smaller area, smaller insertion loss, easy integration and higher power consumption. The disadvantages of both passive and active phase shifters are apparent and there is no phase shifter and phase control method that can combine the advantages of both phase shifters.
Disclosure of Invention
In a first aspect of the present invention, an ultra wideband digitally controlled phase shifting device is provided. The device comprises:
the device comprises a processing module and a phase shifting module, wherein the processing module is connected with the phase shifting module, and the phase shifting module comprises a plurality of phase shifting units, wherein the positions of any phase shifting units or any phase shifting units and the processing module can be interchanged;
the processing module comprises a power divider, two digital variable gain amplifiers and a 3dB coupler, wherein the power divider is a one-to-two power divider, the output ends of the power divider are respectively connected with the digital variable gain amplifiers, the output ends of the digital variable gain amplifiers are connected with the 3dB coupler, the 3dB coupler comprises two output ends, the first output end is grounded, and the second output end is used as the output end of the first module;
the phase shifting unit comprises a phase shifter and switches connected in parallel at two ends of the phase shifter.
Further, the phase shifting module comprises three identical phase shifting units, each phase shifting unit is a 90-degree phase shifter, and two ends of the 90-degree phase shifter are connected with a switch in parallel; or (b)
The phase shifting module comprises two phase shifting units, wherein one phase shifting unit is a 90-degree phase shifter, and two ends of the 90-degree phase shifter are connected with a switch in parallel; the other phase shifting unit is a 180-degree phase shifter, and two ends of the 180-degree phase shifter are connected with a switch in parallel.
Further, the output end of the power divider outputs two paths of signals with the same amplitude, the same phase or the same amplitude and opposite phases.
Further, the digital variable gain amplifier is used for adjusting the amplitude of the signal output by the power divider and outputting the adjusted signal to the 3dB coupler.
Further, the 3dB coupler is configured to couple output signals of the two digital variable gain amplifiers to obtain signals with any phase in one quadrant.
Further, the signals of any phase in the quadrant are:
Z＝X+jY
wherein Z is a coupled signal in a complex form; x and Y are two paths of adjusted signals respectively.
Further, the method further comprises the following steps:
in the phase shifting module, when the switch is closed, the phase shifter connected in parallel with the switch is in a short circuit state, and the signal of the output end of the current module is the same as the signal of the input end;
when the switch is disconnected, the phase shifter connected in parallel with the switch is in a working state, so that the signal at the input end of the current module is output from the output end after phase shift occurs.
In a second aspect of the present invention, a phase control method is provided. The method comprises the following steps:
respectively performing first processing and second processing on the input signal to obtain an output signal;
the first process includes:
receiving an input signal, dividing the input signal into two paths of signals through a one-to-two power divider, and outputting the signals to a digital variable gain amplifier;
the amplitude of the two paths of signals is adjusted through a digital variable gain amplifier, so that two paths of adjusted signals are obtained and output to a 3dB coupler;
coupling the two paths of adjusted signals through a 3dB coupler to obtain signals with any phase in one quadrant;
the second process includes: the phase of the input signal is shifted.
Further, the phase shifting the input signal includes:
the operating state of the phase shifter is controlled by controlling the switches connected in parallel at two ends of the phase shifter, and an input signal is input to one or more phase shifters in the operating state for phase shifting.
Further, the controlling the working state of the phase shifter by controlling the switches connected in parallel to the two ends of the phase shifter includes:
when the switch is closed, the phase shifter connected in parallel with the switch is in a short circuit state, and the signal of the output end of the current module is identical to the signal of the input end;
when the switch is disconnected, the phase shifter connected in parallel with the switch is in a working state, so that the signal at the input end of the current module is output from the output end after phase shift occurs.
It should be understood that the description in this summary is not intended to limit the critical or essential features of the embodiments of the invention, nor is it intended to limit the scope of the invention. Other features of the present invention will become apparent from the description that follows.
The invention can combine the advantages of the active phase shifter and the passive phase shifter, adopts a digital control mode, controls the phase shifting precision through the digital variable gain amplifier, and the cascade sequence can be changed according to the link condition, thereby having the advantages of low power consumption, low insertion loss, high precision and flexible use.
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The above and other features, advantages and aspects of embodiments of the present invention will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, wherein like or similar reference numerals denote like or similar elements, in which:
FIG. 1 shows a schematic diagram of an ultra wideband digitally controlled phase shifter according to an embodiment of the present invention;
FIG. 2 shows a schematic diagram of an ultra wideband digitally controlled phase shifter according to another embodiment of the present invention;
FIG. 3 shows a schematic diagram of an ultra wideband digitally controlled phase shifter according to another embodiment of the present invention;
FIG. 4 shows a schematic diagram of an ultra wideband digitally controlled phase shifter according to another embodiment of the present invention;
fig. 5 shows a flow chart of a phase control method according to an embodiment of the invention;
wherein 1 is a processing module, 2 is a first phase shifting unit, 3 is a second phase shifting unit, and 4 is a third phase shifting unit.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In addition, the term "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
The invention is suitable for single-ended and differential structures, can combine the advantages of the active phase shifter and the passive phase shifter, adopts a digital control mode, controls the phase shifting precision through the digital variable gain amplifier, and can change the cascade sequence according to the link condition, thereby having the advantages of low power consumption, low insertion loss, high precision and flexible use.
Fig. 1 shows a schematic diagram of an ultra wideband digitally controlled phase shifter according to an embodiment of the present invention.
The device comprises a processing module and a phase shifting module, wherein the processing module is connected with the phase shifting module, and the phase shifting module comprises a plurality of phase shifting units, wherein the positions of any phase shifting units or any phase shifting units and the processing module can be interchanged.
As an embodiment of the present invention, the phase shift module includes three identical phase shift units, each phase shift unit is a 90 degree phase shifter, and two ends of the 90 degree phase shifter are connected in parallel with a switch.
In the phase shifting module, the input end and the output end of the first phase shifting unit, the second phase shifting unit, the third phase shifting unit and the processing module are connected, and the first phase shifting unit, the second phase shifting unit, the third phase shifting unit and the processing module can be connected with each other in an interchangeable position, for example: the output end of the processing module is connected with the input end of the first phase shifting unit, the output end of the first phase shifting unit is connected with the input end of the second phase shifting unit, and the output end of the second phase shifting unit is connected with the input end of the third phase shifting unit, as shown in fig. 1.
In the above embodiment, if the processing module and one of the phase shifting units are interchanged, the phase shifting purpose can be achieved, as shown in fig. 2, the output end of the first phase shifting unit is connected to the input end of the second phase shifting unit, the output end of the second phase shifting unit is connected to the input end of the processing module, and the output end of the processing module is connected to the input end of the third phase shifting unit.
In this embodiment, the 90-degree phase shifter adopts a passive structure, and the number selection signal that is turned on and off by the switch is phase-shifted via several 90-degree phase shifters, so as to select the quadrant of the output signal. The method specifically comprises the following steps:
when the switch of one of the first phase shifting unit, the second phase shifting unit and the third phase shifting unit is conducted, the 90-degree phase shifter of the phase shifting unit is short-circuited, and signals are directly communicated; when the switch of one of the first phase shifting unit, the second phase shifting unit and the third phase shifting unit is opened, the 90-degree phase shifter of the phase shifting unit works, and the signal is subjected to 90-degree phase shifting. When the switches in the first phase shifting unit, the second phase shifting unit and the third phase shifting unit are all opened, the phase shifter forms 360-degree omnibearing phase shift.
In the above embodiment, the 360-degree omnidirectional phase shift is realized by providing the phase shift module including three 90-degree phase shifters, and in another embodiment, the three 90-degree phase shifters may be replaced by one 90-degree phase shifter and one 180-degree phase shifter, so as to realize the 360-degree omnidirectional phase shift.
As another embodiment of the present invention, the phase shift module includes two phase shift units, wherein a first phase shift unit includes a 90 degree phase shifter, and a switch is connected in parallel to two ends of the 90 degree phase shifter; the second phase shifting unit comprises a 180-degree phase shifter, and two ends of the 180-degree phase shifter are connected with a switch in parallel.
In this embodiment, as shown in fig. 3, the output end of the processing module is connected to the input end of the first phase shifting unit, and the output end of the first phase shifting unit is connected to the input end of the second phase shifting unit.
In the above embodiment, if the processing module and one of the phase shifting units are interchanged, the phase shifting can be achieved, as shown in fig. 4, where the output end of the first phase shifting unit is connected to the input end of the processing module, and the output end of the processing module is connected to the input end of the second phase shifting unit.
In this embodiment, the 90-degree phase shifter and the 180-degree phase shifter are both passive structures, and the number of selection signals turned on and turned off by the switch are phase-shifted by the 90-degree phase shifter and/or the 180-degree phase shifter, so as to select quadrants of the output signals. The method specifically comprises the following steps:
when the switch of one phase shifting unit in the first phase shifting unit and the second phase shifting unit is conducted, the phase shifter of the phase shifting unit is short-circuited, and a signal is directly connected; when a switch of one phase shifting unit in the first phase shifting unit and the second phase shifting unit is disconnected, the phase shifter of the phase shifting unit works, and if the current phase shifter is a 90-degree phase shifter, 90-degree phase shifting of the signal occurs; if the current phase shifter is a 180 degree phase shifter, then the signal is 180 degree phase shifted. When the switches in the first phase shifting unit and the second phase shifting unit are opened, the phase shifter forms 360-degree omnibearing phase shift.
In some embodiments, the processing module includes a power divider, two digital variable gain amplifiers and a 3dB coupler, where the power divider is a one-to-two power divider, and is configured to generate two paths of signals with identical amplitude, identical phase or identical amplitude, and 180 degrees phase difference; any form of constitution may be used, such as balun and the like.
The power divider is divided into two output ends, and the output ends of the power divider are respectively connected with a digital variable gain amplifier. The digital variable gain amplifier is used for adjusting the amplitude of the signal output by the power divider, for example, the amplitude of two paths of input signals is respectively adjusted to be X and Y. The digital variable gain amplifier may be configured in a common source configuration, a gilbert cell configuration, or the like, for example, or may be configured in other manners.
The digital variable gain amplifier can control the phase shift precision and improve the phase shift precision.
And the output end of the digital variable gain amplifier is connected with a 3dB coupler, and the adjusted signal is output to the 3dB coupler. The 3dB coupler comprises two output terminals, wherein a first output terminal is connected to one end of a resistor, the other end of the resistor is grounded, and the resistor is, for example, a 50Ω resistor; the second output end is used as the output end of the first module. The 3dB coupler is used for combining two paths of input signals X and Y into a signal z=x+ jY of any phase within 90 degrees in one quadrant. Wherein Z is a coupled signal in a complex form; x and Y are two paths of adjusted signals respectively. The 3dB coupler may be, for example, a coupled line coupler, lange coupler, etc., or may take other forms.
The above description of the embodiments of the device further describes the solution of the present invention through the method embodiments below.
As shown in fig. 5, the phase control method of the phase shifter includes:
and respectively performing first processing and second processing on the input signal to obtain an output signal.
Wherein the first process comprises:
receiving an input signal, dividing the input signal into two paths of signals through a one-to-two power divider, and outputting the signals to a digital variable gain amplifier;
the amplitude of the two paths of signals is adjusted through a digital variable gain amplifier, so that two paths of adjusted signals are obtained and output to a 3dB coupler;
and coupling the two paths of adjusted signals through a 3dB coupler to obtain signals with any phase in one quadrant.
The second processing, including phase shifting the input signal, specifically includes:
the operating state of the phase shifter is controlled by controlling the switches connected in parallel at two ends of the phase shifter, and an input signal is input to one or more phase shifters in the operating state for phase shifting.
When the switch is closed, the phase shifter connected in parallel with the switch is in a short circuit state, and the signal of the output end of the current module is identical to the signal of the input end;
when the switch is disconnected, the phase shifter connected in parallel with the switch is in a working state, so that the signal at the input end of the current module is output from the output end after phase shift occurs.
The first process and the second process described above can be interchanged in logical positions.
The invention combines the advantages of the active phase shifter and the passive phase shifter, adopts a digital control mode, controls the phase shifting precision through the digital variable gain amplifier, and can change the cascade sequence according to the link condition, thereby having the advantages of low power consumption, low loss, high precision and flexible use
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are example forms of implementing the claims.
Claims (8)
1. An ultra-wideband digitally controlled phase shifting device, comprising: the device comprises a processing module and a phase shifting module, wherein the processing module is connected with the phase shifting module, and the phase shifting module comprises a plurality of phase shifting units, wherein the positions of any phase shifting units or any phase shifting units and the processing module can be interchanged;
the processing module comprises a power divider, two digital variable gain amplifiers and a 3dB coupler, wherein the power divider is a one-to-two power divider, the output ends of the power divider are respectively connected with the digital variable gain amplifiers, the output ends of the digital variable gain amplifiers are connected with the 3dB coupler, the 3dB coupler comprises two output ends, the first output end is grounded, and the second output end is used as the output end of the first module; the 3dB coupler is used for coupling the output signals of the two digital variable gain amplifiers to obtain signals of any phase in one quadrant;
the phase shifting unit comprises a phase shifter and switches connected in parallel with two ends of the phase shifter;
when the switch is closed, the phase shifter connected in parallel with the switch is in a short circuit state, and the signal of the output end of the current module is identical to the signal of the input end;
when the switch is disconnected, the phase shifter connected in parallel with the switch is in a working state, so that the signal at the input end of the current module is output from the output end after phase shift occurs.
2. The ultra-wideband digitally controlled phase shifter of claim 1, wherein the phase shifter module comprises three identical phase shifter units, each phase shifter unit is a 90 degree phase shifter, and a switch is connected in parallel across the 90 degree phase shifter; or (b)
The phase shifting module comprises two phase shifting units, wherein one phase shifting unit is a 90-degree phase shifter, and two ends of the 90-degree phase shifter are connected with a switch in parallel; the other phase shifting unit is a 180-degree phase shifter, and two ends of the 180-degree phase shifter are connected with a switch in parallel.
3. The ultra-wideband digitally controlled phase shifter of claim 1, wherein the output of the power divider outputs two paths of signals of equal amplitude, equal phase or equal amplitude and opposite phase.
4. The ultra-wideband digitally controlled phase shifter of claim 1, wherein the digital variable gain amplifier is configured to adjust the amplitude of the signal output by the power divider and output the adjusted signal to the 3dB coupler.
5. The ultra-wideband digitally controlled phase shifter of claim 1, wherein the signal of any phase in one quadrant is:
Z＝X+jY
wherein Z is a coupled signal in a complex form; x and Y are two paths of adjusted signals respectively.
6. A phase control method using the phase shifting device according to any one of claims 1 to 5, comprising: respectively performing first processing and second processing on the input signal to obtain an output signal;
the first process includes:
receiving an input signal, dividing the input signal into two paths of signals through a one-to-two power divider, and outputting the signals to a digital variable gain amplifier;
the amplitude of the two paths of signals is adjusted through a digital variable gain amplifier, so that two paths of adjusted signals are obtained and output to a 3dB coupler;
coupling the two paths of adjusted signals through a 3dB coupler to obtain signals with any phase in one quadrant;
the second process includes: the phase of the input signal is shifted.
7. The phase control method according to claim 6, wherein the phase shifting the input signal includes:
the operating state of the phase shifter is controlled by controlling the switches connected in parallel at two ends of the phase shifter, and an input signal is input to one or more phase shifters in the operating state for phase shifting.
8. The phase control method according to claim 7, wherein the controlling the operating state of the phase shifter by controlling the switches connected in parallel to both ends of the phase shifter comprises:
when the switch is closed, the phase shifter connected in parallel with the switch is in a short circuit state, and the signal of the output end of the current module is identical to the signal of the input end;
when the switch is disconnected, the phase shifter connected in parallel with the switch is in a working state, so that the signal at the input end of the current module is output from the output end after phase shift occurs.
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| FR2781106B1 (en) * | 1998-07-10 | 2001-04-13 | Commissariat Energie Atomique | VECTOR MODULATOR |
| CN107146956B (en) * | 2016-03-01 | 2019-08-30 | 南宁富桂精密工业有限公司 | Antenna element and MIMO antenna system using codebook |
| CN106656099B (en) * | 2016-11-18 | 2020-01-03 | 华为技术有限公司 | Digital phase shifter |
| CN208334984U (en) * | 2018-07-17 | 2019-01-04 | 四川九立微波有限公司 | A kind of detection control of multichannel automatic phase is the same as phase device |
| CN109585983A (en) * | 2018-11-14 | 2019-04-05 | 北京遥感设备研究所 | One kind being based on CMOS technology W-waveband phase shifter |
| US11063355B2 (en) * | 2019-03-04 | 2021-07-13 | Tubis Technology Inc. | Bi-directional vector modulator/active phase shifter |
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| SAMUEL M.SHERMAN等著，周颖等译.《单脉冲测向原理与技术 第2版》.国防工业出版社,2013,54-56. * |
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