A small-area broadband high-precision phase-shifting device and a phase control method thereof
By using a cascaded structure of a power divider, a phase shifting module, and a gain adjustment module, high-precision broadband phase shifting within a small area is achieved. This solves the problem of excessively large area in existing phase shifters that combine active and passive technologies, and achieves the performance of an active phase shifter while saving costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENGXIN TENGYUE (BEIJING) TECH CO LTD
- Filing Date
- 2025-09-08
- Publication Date
- 2026-07-14
AI Technical Summary
In existing phase shifter designs, phase shifters that combine active and passive technologies occupy a large area, making it difficult to achieve high-precision broadband phase shifting within a small area.
The system employs a cascaded structure of a power divider, a phase shifter, a gain adjustment module, and a coupler. The phase shifter uses a passive structure, while the gain adjustment module uses an active structure. The power divider divides and shifts the signal, and the gain adjustment is then coupled to form the target phase signal.
It achieves a combination of active and passive technologies in a smaller area, possessing the performance and functions of an active phase shifter, saving costs and design time, and requiring no power consumption.
Smart Images
Figure CN121355559B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of integrated circuit technology, and in particular to a small-area, broadband, high-precision phase-shifting device and its phase control method. Background Technology
[0002] Currently, the mainstream phase shifters are mainly divided into passive phase shifters and active phase shifters. Passive phase shifters achieve phase changes by switching the paths of high-pass, low-pass, or band-pass networks; active phase shifters typically consist of four parts: a balun, a quadrature signal generator, a variable gain amplifier, and an output matching circuit. They achieve phase shifting by adjusting the gain of the quadrature signal I and Q paths.
[0003] Active phase shifters are characterized by their small size, but they consume some power; passive phase shifters, although larger in size, consume no power and have a higher 1dB compression point. Current phase shifter designs that combine active and passive phase shifters use multiple 90-degree passive units with multiple switching networks; however, this design results in a large footprint and has certain limitations. Summary of the Invention
[0004] To address the aforementioned technical problems, the purpose of this application is to provide a small-area, broadband, high-precision phase-shifting device and its phase control method, which can achieve a combination of active and passive phase shifting in a smaller area.
[0005] To achieve the above objectives, one aspect of this application proposes a small-area, broadband, high-precision phase-shifting device, comprising:
[0006] A power divider is used to divide a single-ended input signal into a first signal and a second signal.
[0007] A phase-shifting module, connected to the output of the power divider, is used to shift the phase of the first signal and / or the second signal according to the target phase-shifting value to obtain a first phase-shifted signal and a second phase-shifted signal.
[0008] A gain adjustment module, connected to the output of the phase shift module, is used to adjust the first phase shift signal and the second phase shift signal according to the target phase shift value to obtain a first adjustment signal and a second adjustment signal.
[0009] A coupler, connected to the output of the gain adjustment module, is used to couple the first adjustment signal and the second adjustment signal to obtain the target phase signal.
[0010] In some embodiments, the phase-shifting module includes:
[0011] A first phase-shifting unit and a first switch are provided. The first phase-shifting unit is connected to the first output terminal of the power divider. The first switch is connected in parallel across the two ends of the first phase-shifting unit. The first switch is used to turn on or off according to the target phase-shifting value. The first phase-shifting unit is used to shift the first signal according to the state of the first switch to obtain the first phase-shifted signal.
[0012] The second phase-shifting unit is connected to the second output terminal of the power divider, and the second switch is connected in parallel across the two ends of the second phase-shifting unit. The second switch is used to turn on or off according to the target phase-shifting value, and the second phase-shifting unit is used to shift the second signal according to the state of the second switch to obtain the second phase-shifted signal.
[0013] In some embodiments, the phase-shifting module includes a first phase-shifting unit and a second phase-shifting unit, and the gain adjustment module includes:
[0014] A first gain amplifier is connected to the output terminal of the first phase shifting unit and is used to adjust the first phase shifting signal according to the target phase shifting value to obtain a first adjustment signal;
[0015] The second gain amplifier is connected to the output terminal of the second phase shifting unit and is used to adjust the second phase shifting signal according to the target phase shifting value to obtain a second adjustment signal.
[0016] In some embodiments, both the first phase shifting unit and the second phase shifting unit are 180-degree phase shifters.
[0017] To achieve the above objectives, another aspect of this application proposes a phase control method for a small-area, broadband, high-precision phase-shifting device, implemented using the phase-shifting device as described above, comprising the following steps:
[0018] The single-ended input signal is divided into a first signal and a second signal by a power divider.
[0019] The phase-shifting module shifts the first signal and / or the second signal according to the target phase-shifting value to obtain a first phase-shifted signal and a second phase-shifted signal.
[0020] The first phase-shift signal and the second phase-shift signal are adjusted by the gain adjustment module according to the target phase-shift value to obtain the first adjustment signal and the second adjustment signal.
[0021] The first adjustment signal and the second adjustment signal are coupled together by a coupler to obtain the target phase signal.
[0022] In some embodiments, the phase-shifting module includes a first switch, a second switch, a first phase-shifting unit, and a second phase-shifting unit. The step of shifting the first signal and / or the second signal according to a target phase-shifting value using the phase-shifting module to obtain a first phase-shifted signal and a second phase-shifted signal specifically includes:
[0023] The first switch and the second switch are controlled to be turned on or off according to the target phase shift value;
[0024] The first phase-shifting unit shifts the first signal according to the state of the first switch to obtain the first phase-shifted signal.
[0025] The second phase-shifting unit shifts the phase of the second signal according to the state of the second switch to obtain the second phase-shifted signal.
[0026] In some embodiments, controlling the first switch and the second switch to be turned on or off according to the target phase shift value specifically includes:
[0027] When the target phase shift value is 0 to 90 degrees, both the first switch and the second switch are turned on.
[0028] When the target phase shift value is 90 to 180 degrees, the first switch is controlled to open and the second switch is controlled to open.
[0029] When the target phase shift value is 180 to 270 degrees, both the first switch and the second switch are turned off.
[0030] When the target phase shift value is 270 to 360 degrees, the first switch is turned on and the second switch is turned off.
[0031] In some embodiments, the gain adjustment module includes a first gain amplifier and a second gain amplifier. The step of adjusting the first phase-shifted signal and the second phase-shifted signal according to the target phase-shift value through the gain adjustment module to obtain a first adjusted signal and a second adjusted signal specifically includes:
[0032] Based on the target phase shift value, determine the phase angle between the first phase shift signal and the second phase shift signal;
[0033] Based on the phase angle, the gains of the first gain amplifier and the second gain amplifier are adjusted to regulate the first phase-shifted signal and the second phase-shifted signal, thereby obtaining the first regulated signal and the second regulated signal.
[0034] In some embodiments, determining the phase angle between the first phase-shifted signal and the second phase-shifted signal based on the target phase-shifted value specifically includes:
[0035] When the target phase shift value is 0 to 90 degrees, the phase angle is determined to be equal to the target phase shift value;
[0036] When the target phase shift value is 90 to 180 degrees, the phase angle is determined to be equal to the target phase shift value minus 90 degrees;
[0037] When the target phase shift value is between 180 and 270 degrees, the phase angle is determined to be equal to the target phase shift value minus 180 degrees;
[0038] When the target phase shift value is 270 to 360 degrees, the phase angle is determined to be equal to the target phase shift value minus 270 degrees.
[0039] In some embodiments, adjusting the gains of the first gain amplifier and the second gain amplifier according to the phase angle specifically involves:
[0040]
[0041] Where Φ1 represents the phase angle, X represents the gain of the first gain amplifier, and Y represents the gain of the second gain amplifier.
[0042] The beneficial effects of this application are as follows: This application presents a small-area, broadband, high-precision phase-shifting device and its phase control method, including a power divider, a phase-shifting module, a gain adjustment module, and a coupler. The power divider is used to divide a single-ended input signal into a first signal and a second signal; the phase-shifting module is used to shift the first signal and / or the second signal according to a target phase-shifting value to obtain a first phase-shifted signal and a second phase-shifted signal; the gain adjustment module is used to adjust the first phase-shifted signal and the second phase-shifted signal according to the target phase-shifting value to obtain a first adjusted signal and a second adjusted signal; the coupler is used to couple the first adjusted signal and the second adjusted signal to obtain a target phase signal. This application adopts a cascaded structure of a power divider, a phase-shifting module, a gain adjustment module, and a coupler. The phase-shifting module is implemented using a passive structure, and the gain adjustment module is implemented using an active structure. This allows for the combination of active and passive phase shifting with fewer units and a smaller area, possessing the performance and functions of both active and passive phase shifters, while saving cost and design time. Attached Figure Description
[0043] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments of this application are described below. It should be understood that the drawings described below are only for the purpose of clearly illustrating some embodiments of the technical solutions in this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0044] Figure 1This is a schematic diagram of a conventional phase shifter design provided in one embodiment of this application;
[0045] Figure 2 This is a schematic diagram of the structure of a small-area, broadband, high-precision phase-shifting device provided in one embodiment of this application;
[0046] Figure 3 A schematic diagram of the structure of a small-area, broadband, high-precision phase-shifting device provided in another embodiment of this application;
[0047] Figure 4 This is a schematic diagram illustrating the steps of a phase control method for a small-area, broadband, high-precision phase-shifting device according to an embodiment of this application.
[0048] Figure 5 This is a schematic diagram illustrating the processing steps of a phase-shifting module provided in one embodiment of this application;
[0049] Figure 6 This is a schematic diagram of the processing steps of a gain adjustment module provided in one embodiment of this application.
[0050] Reference numerals: K1, first switch; K2, second switch; VGA1, first gain amplifier; VGA2, second gain amplifier. Detailed Implementation
[0051] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit it. In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this application; they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of this application as detailed in the appended claims.
[0052] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various concepts, but unless otherwise stated, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. For example, without departing from the scope of the embodiments of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the words “if,” “when,” or “in response to a determination” as used herein may be interpreted as “when…” or “when…” or “in response to a determination.”
[0053] As used in this application, the terms "at least one", "multiple", "each", "any", etc., "at least one" includes one, two or more, "multiple" includes two or more, "each" refers to each of the corresponding multiples, and "any" refers to any one of the multiples.
[0054] Currently, the mainstream phase shifters are mainly divided into passive phase shifters and active phase shifters. Passive phase shifters achieve phase changes by switching the paths of high-pass, low-pass, or band-pass networks; active phase shifters typically consist of four parts: a balun, a quadrature signal generator, a variable gain amplifier, and an output matching circuit. They achieve phase shifting by adjusting the gain of the quadrature signal I and Q paths.
[0055] Active phase shifters are characterized by their small size but consume some power; passive phase shifters, while having a larger size, consume no power and have a higher 1dB compression point. Current phase shifter designs that combine active and passive technologies include... Figure 1 The diagram shows the structure of an existing phase shifter design, which uses three 90-degree passive units with three switching networks. However, this design results in a large area footprint and has certain limitations.
[0056] In view of this, embodiments of this application propose a small-area, broadband, high-precision phase-shifting device, including a power divider, a phase-shifting module, a gain adjustment module, and a coupler. The power divider is used to divide a single-ended input signal into a first signal and a second signal; the phase-shifting module is used to shift the first signal and / or the second signal according to a target phase-shifting value to obtain a first phase-shifted signal and a second phase-shifted signal; the gain adjustment module is used to adjust the first phase-shifted signal and the second phase-shifted signal according to the target phase-shifting value to obtain a first adjusted signal and a second adjusted signal; the coupler is used to couple the first adjusted signal and the second adjusted signal to obtain a target phase signal. This application adopts a cascaded structure of a power divider, a phase-shifting module, a gain adjustment module, and a coupler. The phase-shifting module is implemented using a passive structure, and the gain adjustment module is implemented using an active structure. This allows for the combination of active and passive technologies with fewer units and a smaller area, possessing the performance and functions of both active and passive phase shifters, while saving cost and design time.
[0057] Reference Figure 2 , Figure 2 This is a schematic diagram of a small-area broadband, high-precision phase-shifting device according to an embodiment of this application. The embodiment of this application proposes a small-area broadband, high-precision phase-shifting device, comprising:
[0058] A power divider is used to divide a single-ended input signal into a first signal and a second signal.
[0059] The phase shift module is connected to the output of the power divider and is used to shift the phase of the first signal and / or the second signal according to the target phase shift value to obtain the first phase shift signal and the second phase shift signal.
[0060] The gain adjustment module is connected to the output of the phase shift module and is used to adjust the first phase shift signal and the second phase shift signal according to the target phase shift value to obtain the first adjustment signal and the second adjustment signal.
[0061] The coupler, connected to the output of the gain adjustment module, is used to couple the first adjustment signal and the second adjustment signal to obtain the target phase signal.
[0062] Specifically, the phase-shifting device in this embodiment comprises a power divider, a phase-shifting module, a gain adjustment module, and a coupler. The power divider is a 1-to-2 power divider used to divide a single-ended input signal into two signals with equal power, denoted as the I-channel signal (i.e., the first signal) and the Q-channel signal (i.e., the second signal). The phase-shifting module is implemented using a passive structure and is used to perform corresponding phase-shifting processing on the I-channel and Q-channel signals according to a preset target phase-shifting value, ensuring that the two signals reach the required relative phase position, thereby generating a first phase-shifted signal and a second phase-shifted signal. The gain adjustment module is implemented using an active structure and is used to adjust the gain of the phase-shifted I-channel and Q-channel signals according to the target phase-shifting value, so as to precisely control the amplitude of the signals to adapt to different application requirements, obtaining a first adjusted signal and a second adjusted signal. The coupler is a 3dB coupler used to couple the first and second adjusted signals after gain adjustment to form an output signal with target phase characteristics (i.e., the target phase signal).
[0063] Reference Figure 3 , Figure 3 The schematic diagram shows a small-area, broadband, high-precision phase-shifting device according to another embodiment of this application. Further, as an optional implementation, the phase-shifting module includes:
[0064] The first phase shifting unit and the first switch K1 are connected to the first output terminal of the power divider. The first switch K1 is connected in parallel across the two ends of the first phase shifting unit. The first switch K1 is used to turn on or off according to the target phase shift value. The first phase shifting unit is used to shift the first signal according to the state of the first switch K1 to obtain the first phase shift signal.
[0065] The second phase shifting unit and the second switch K2 are connected to the second output terminal of the power divider. The second switch K2 is connected in parallel across the two ends of the second phase shifting unit. The second switch K2 is used to turn on or off according to the target phase shift value. The second phase shifting unit is used to shift the second signal according to the state of the second switch K2 to obtain the second phase shift signal.
[0066] As an optional implementation, both the first phase shifting unit and the second phase shifting unit are 180-degree phase shifters.
[0067] Specifically, the I-channel signal (or Q-channel signal) passes through the first phase-shifting unit, whose input signal is the first signal A. If the first switch K1 is on, the first signal A remains A; if the first switch K1 is off, the first signal A passes through the 180-degree phase shifter and becomes -A. Similarly, the Q-channel signal (or I-channel signal) passes through the second phase-shifting unit, whose input signal is the second signal B. After passing through the 180-degree phase shifter, signals B and -B can be obtained.
[0068] Reference Figure 3 As a further optional implementation, the phase-shifting module includes a first phase-shifting unit and a second phase-shifting unit, and the gain adjustment module includes:
[0069] The first gain amplifier VGA1 is connected to the output terminal of the first phase shifting unit and is used to adjust the first phase shifting signal according to the target phase shifting value to obtain the first adjustment signal;
[0070] The second gain amplifier VGA2 is connected to the output of the second phase shift unit and is used to adjust the second phase shift signal according to the target phase shift value to obtain the second adjustment signal.
[0071] Specifically, both the first gain amplifier VGA1 and the second gain amplifier VGA2 are variable gain amplifiers. The gain of the first gain amplifier VGA1 is X, and the gain of the second gain amplifier VGA2 is Y. Then, at the output of the 3dB coupler, a signal (±AX±jBY) can be obtained. Since A and B are output by the power divider, theoretically A=B. Therefore, by adjusting the gains X and Y of the first gain amplifier VGA1 and the second gain amplifier VGA2, a phase change of 0-90° can be obtained, and theoretically, a phase shift of 360° can be obtained.
[0072] The above describes the structure and working principle of a small-area, broadband, high-precision phase-shifting device according to an embodiment of this application. It can be understood that, compared with existing phase-shifting devices, this application adopts a cascaded structure of a power divider, a phase-shifting module, a gain adjustment module, and a coupler. The phase-shifting module is implemented using a passive structure, including two 180-degree phase shifters paired with two switching networks. The gain adjustment module is implemented using an active structure. It can achieve a combination of active and passive phase shifting with fewer units and a smaller area, possessing the performance and functions of both active and passive phase shifters (no power consumption, small area, broadband, high precision, etc.), while saving costs and design time.
[0073] Reference Figure 4 , Figure 4This is a schematic diagram illustrating the steps of a phase control method for a small-area, broadband, high-precision phase-shifting device according to an embodiment of this application. The embodiment provides a phase control method for a small-area, broadband, high-precision phase-shifting device, implemented using the aforementioned phase-shifting device, including the following steps S101 to S104:
[0074] Step S101: Divide the single-ended input signal into a first signal and a second signal using a power divider;
[0075] Step S102: Using a phase-shifting module, the first signal and / or the second signal are phase-shifted according to the target phase-shifting value to obtain a first phase-shifted signal and a second phase-shifted signal;
[0076] Step S103: Using the gain adjustment module, adjust the first phase shift signal and the second phase shift signal according to the target phase shift value to obtain the first adjustment signal and the second adjustment signal;
[0077] Step S104: Couple the first adjustment signal and the second adjustment signal through a coupler to obtain the target phase signal.
[0078] As an optional implementation, the phase-shifting module includes a first switch, a second switch, a first phase-shifting unit, and a second phase-shifting unit. Step S102 can be specifically divided into the following steps S1021 to S1023:
[0079] Step S1021: Control the first switch and the second switch to turn on or off according to the target phase shift value;
[0080] Step S1022: The first signal is phase-shifted according to the state of the first switch by the first phase-shifting unit to obtain the first phase-shifted signal;
[0081] Step S1023: The second phase-shifting unit shifts the second signal according to the state of the second switch to obtain the second phase-shifted signal.
[0082] As an optional implementation, step S1021 can be further divided into the following steps S10211:
[0083] Step S10211: When the target phase shift value is 0 to 90 degrees, control both the first switch and the second switch to be turned on;
[0084] Step S10212: When the target phase shift value is 90 to 180 degrees, control the first switch to open and control the second switch to open;
[0085] Step S10213: When the target phase shift value is 180 to 270 degrees, both the first and second switches are disconnected.
[0086] Step S10214: When the target phase shift value is 270 to 360 degrees, control the first switch to turn on and control the second switch to turn off.
[0087] In some alternative embodiments, the phase-shifting module in this application is designed to be highly flexible and configurable to adapt to different phase-shifting requirements. By using a first switch and a second switch, as well as two independent phase-shifting units, precise control of the input signal can be achieved with a smaller area and lower design cost. Figure 5 The diagram illustrates the processing steps of the phase shift module. When the target phase shift value is 0–90 degrees, both the first and second switches are turned on, and the first signal A and the second signal B remain A and B, respectively. When the target phase shift value is 90–180 degrees, the first switch is turned off, and the second switch is turned on, and the first signal A becomes -A, while the second signal B remains B. When the target phase shift value is 180–270 degrees, both the first and second switches are turned off, and the first signal A and the second signal B become -A and -B, respectively. When the target phase shift value is 270–360 degrees, the first switch is turned on, and the second switch is turned off, and the first signal A remains A, while the second signal B becomes -B.
[0088] As an optional implementation, the gain adjustment module includes a first gain amplifier and a second gain amplifier. Step S103 can be specifically divided into the following steps S1031 and S1032:
[0089] Step S1031: Determine the phase angle of the first phase-shifting signal and the second phase-shifting signal based on the target phase-shifting value;
[0090] Step S1032: Adjust the gain of the first gain amplifier and the second gain amplifier according to the phase angle to adjust the first phase-shifted signal and the second phase-shifted signal, and obtain the first adjustment signal and the second adjustment signal.
[0091] As an optional implementation, step S1031 can be further divided into the following steps S10311 and S10314:
[0092] Step S10311: When the target phase shift value is 0 to 90 degrees, determine that the phase angle is equal to the target phase shift value;
[0093] Step S10312: When the target phase shift value is 90 to 180 degrees, determine that the phase angle is equal to the target phase shift value minus 90 degrees;
[0094] Step S10313: When the target phase shift value is 180 to 270 degrees, determine that the phase angle is equal to the target phase shift value minus 180 degrees;
[0095] Step S10314: When the target phase shift value is 270 to 360 degrees, determine that the phase angle is equal to the target phase shift value minus 270 degrees.
[0096] In some alternative embodiments, such as Figure 6 The diagram illustrates the processing steps of the gain adjustment module. The first and second signals pass through the phase-shifting module to obtain a first phase-shifted signal and a second phase-shifted signal. These signals are then transmitted to the first and second gain amplifiers. When the target phase shift value Φ is 0–90 degrees, the phase angle Φ1 = Φ; when the target phase shift value Φ is 90–180 degrees, the phase angle Φ1 = Φ - 90°; when the target phase shift value Φ is 180–270 degrees, the phase angle Φ1 = Φ - 180°; and when the target phase shift value Φ is 270–360 degrees, the phase angle Φ1 = Φ - 270°.
[0097] As a further optional implementation, the step of adjusting the gain of the first gain amplifier and the second gain amplifier according to the phase angle is specifically as follows:
[0098]
[0099] Where Φ1 represents the phase angle, X represents the gain of the first gain amplifier, and Y represents the gain of the second gain amplifier.
[0100] Specifically, the tangent function is used to calculate the corresponding gain, and the gain of the variable gain amplifier is adjusted to achieve the desired result. The first and second adjustment signals, after adjustment, pass through a 3dB coupler to obtain a signal of any phase.
[0101] The contents of the above-described phase shifting device embodiments are all applicable to the phase control method embodiments. The specific functions implemented by the phase control method embodiments are the same as those of the above-described phase shifting device embodiments, and the beneficial effects achieved are also the same as those achieved by the above-described phase shifting device embodiments.
[0102] Those skilled in the art will understand that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer-readable storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer-readable storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer-readable storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.
[0103] In the foregoing description of this specification, the references to terms such as "one embodiment," "another embodiment," or "some embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0104] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
[0105] The above is a detailed description of the preferred embodiments of this application, but this application is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.
Claims
1. A small-area, broadband, high-precision phase-shifting device, characterized in that, include: A power divider is used to divide a single-ended input signal into a first signal and a second signal. A phase-shifting module, connected to the output of the power divider, is used to shift the phase of the first signal and / or the second signal according to the target phase-shifting value to obtain a first phase-shifted signal and a second phase-shifted signal. A gain adjustment module, connected to the output of the phase shift module, is used to adjust the first phase shift signal and the second phase shift signal according to the target phase shift value to obtain a first adjustment signal and a second adjustment signal. A coupler, connected to the output of the gain adjustment module, is used to couple the first adjustment signal and the second adjustment signal to obtain the target phase signal; The phase-shifting module includes: A first phase-shifting unit and a first switch are provided. The first phase-shifting unit is connected to the first output terminal of the power divider. The first switch is connected in parallel across the two ends of the first phase-shifting unit. The first switch is used to turn on or off according to the target phase-shifting value. The first phase-shifting unit is used to shift the first signal according to the state of the first switch to obtain the first phase-shifted signal. The second phase-shifting unit is connected to the second output terminal of the power divider, and the second switch is connected in parallel across the two ends of the second phase-shifting unit. The second switch is used to turn on or off according to the target phase-shifting value, and the second phase-shifting unit is used to shift the second signal according to the state of the second switch to obtain the second phase-shifted signal. Both the first phase shifting unit and the second phase shifting unit are 180-degree phase shifters.
2. The phase-shifting device according to claim 1, characterized in that, The phase-shifting module includes a first phase-shifting unit and a second phase-shifting unit, and the gain adjustment module includes: A first gain amplifier is connected to the output terminal of the first phase shifting unit and is used to adjust the first phase shifting signal according to the target phase shifting value to obtain a first adjustment signal; The second gain amplifier is connected to the output terminal of the second phase shifting unit and is used to adjust the second phase shifting signal according to the target phase shifting value to obtain a second adjustment signal.
3. A phase control method for a small-area, broadband, high-precision phase-shifting device, implemented using the phase-shifting device as described in any one of claims 1 to 2, characterized in that... Includes the following steps: The single-ended input signal is divided into a first signal and a second signal by a power divider. The phase-shifting module shifts the first signal and / or the second signal according to the target phase-shifting value to obtain a first phase-shifted signal and a second phase-shifted signal. The first phase-shift signal and the second phase-shift signal are adjusted by the gain adjustment module according to the target phase-shift value to obtain the first adjustment signal and the second adjustment signal. The first adjustment signal and the second adjustment signal are coupled by a coupler to obtain the target phase signal; The phase-shifting module includes a first switch, a second switch, a first phase-shifting unit, and a second phase-shifting unit. The phase-shifting module shifts the first signal and / or the second signal according to a target phase-shifting value to obtain a first phase-shifted signal and a second phase-shifted signal, specifically including: The first switch and the second switch are controlled to be turned on or off according to the target phase shift value; The first phase-shifting unit shifts the first signal according to the state of the first switch to obtain the first phase-shifted signal. The second phase-shifting unit shifts the phase of the second signal according to the state of the second switch to obtain the second phase-shifted signal.
4. The method according to claim 3, characterized in that, The control of the first switch and the second switch to be turned on or off according to the target phase shift value specifically includes: When the target phase shift value is 0~90 degrees, both the first switch and the second switch are turned on. When the target phase shift value is 90~180 degrees, the first switch is controlled to open and the second switch is controlled to open. When the target phase shift value is 180~270 degrees, both the first switch and the second switch are turned off. When the target phase shift value is 270~360 degrees, the first switch is turned on and the second switch is turned off.
5. The method according to claim 3, characterized in that, The gain adjustment module includes a first gain amplifier and a second gain amplifier. The gain adjustment module adjusts the first phase-shifted signal and the second phase-shifted signal according to the target phase-shift value to obtain a first adjusted signal and a second adjusted signal, specifically including: Based on the target phase shift value, determine the phase angle between the first phase shift signal and the second phase shift signal; Based on the phase angle, the gains of the first gain amplifier and the second gain amplifier are adjusted to regulate the first phase-shifted signal and the second phase-shifted signal, thereby obtaining the first regulated signal and the second regulated signal.
6. The method according to claim 5, characterized in that, Determining the phase angle between the first phase-shifted signal and the second phase-shifted signal based on the target phase-shifted value specifically includes: When the target phase shift value is 0~90 degrees, the phase angle is determined to be equal to the target phase shift value; When the target phase shift value is 90~180 degrees, the phase angle is determined to be equal to the target phase shift value minus 90 degrees; When the target phase shift value is 180~270 degrees, the phase angle is determined to be equal to the target phase shift value minus 180 degrees; When the target phase shift value is 270~360 degrees, the phase angle is determined to be equal to the target phase shift value minus 270 degrees.
7. The method according to claim 5, characterized in that, The step of adjusting the gains of the first gain amplifier and the second gain amplifier according to the phase angle specifically involves: ； in, Indicates the phase angle. This indicates the gain of the first gain amplifier. This indicates the gain of the second gain amplifier.