Anti-electromagnetic coupling phased array amplitude-phase control circuit and electronic equipment
Through the vertical layout of the module of the phase movement and the attenuator in the phase control circuit control circuit, the non -interference characteristics of the orthogonal signal are used to solve the problem of electromagnetic interference on the chip on the chip of the high working frequency band and small size integrated area. , Achieve higher accuracy and lower interference.
Patent Information
- Application Number
- CN202411266310.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-01-28
AI Technical Summary
In the case of high operating frequency bands and small integrated area, the phase shifters and attenuators integrated on the same chip are susceptible to electromagnetic interference, resulting in reduced phase shift/attenuation accuracy and deterioration of parasitic amplitude/phase regulation.
The anti -electromagnetic coupling phase control array control circuit is adopted. By vertically cloth versions of the module of the phase and the attenuator, the orthogonal signal does not interfere with the characteristics of the orthogonal signal to reduce the electromagnetic interference.
Without increasing additional components and area, the electromagnetic interference environment under high working frequency band and small -sized integrated area was improved, and the accuracy of the phase migration/attenuation accuracy was improved and the parasitic amplitude/phase was reduced.
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Figure CN119382662A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of integrated circuits, and in particular relates to an electromagnetically coupled phased array amplitude and phase control circuit and electronic equipment. Background Art
[0002] Attenuator and phase shifter are the core components in the phased array. Attenuator is used to modulate the amplitude of the transmitted signal or the received signal, and phase shifter is used to modulate the phase of the transmitted signal or the received signal, thereby realizing the function of beamforming in space.
[0003] With the development of phased arrays, attenuators and phase shifters have gradually evolved from two independent components in cascade to a multifunctional chip-level integration of amplitude and phase control that integrates two functions simultaneously in one chip. However, with the increase in integration, the following challenges have been brought about: 1. The operating frequency has gradually developed towards the microwave and even millimeter wave fields, and the circuit size has become smaller and smaller; 2. The system has higher and higher requirements for integration, and it is necessary to integrate the two in an increasingly narrow on-chip area; 3. Usually, when a six-bit attenuator is working, the signal will be attenuated by more than 30dB, that is, the signal amplitude is reduced by more than 1,000 times, so the signal passing through the attenuator is very easy to be interfered with.
[0004] In summary, the single-chip integrated phase shift and attenuation form suffers from increasingly serious electromagnetic interference problems among modules at high frequencies. That is, when two normally functioning phase shifters and attenuators are integrated on one chip, the phase shift / attenuation accuracy is greatly reduced, and the parasitic amplitude modulation / phase modulation deteriorates sharply. Figure 1 As shown in the figure, the reason is that the attenuated signal is affected by interference from different sources such as radiation in space (interference A) / induction in the inductor microstrip line (interference B) / coupling in the substrate (interference C), which will lead to a reduction in chip yield and even chip failure. Therefore, there is an urgent need for an on-chip integration method that can effectively improve the electromagnetic interference problem in a high operating frequency band and a small integration area.
[0005] In existing beamforming chips, the main solutions to solve the electromagnetic interference between the two include: 1. adding an amplifier between the two to amplify the attenuated signal to enhance the signal's resistance to noise; 2. increasing the physical distance between the two to enhance the isolation between them; however, method 1 greatly increases the chip power consumption, and since general amplifiers are unidirectional, but passive phase shifters and attenuators are bidirectional, adding an amplifier will cause the two to lose their bidirectional conductivity and become unidirectional devices; method 2 will greatly increase the chip area and thus increase the chip cost, which is a less economical approach.
[0006] This patented technology provides a new phased array amplitude and phase control circuit that is resistant to electromagnetic coupling, thereby improving the electromagnetic interference problem between the phase shifter and attenuator integrated on the same chip. Summary of the invention
[0007] The present application provides an electromagnetically coupled phased array amplitude and phase control circuit and electronic equipment, aiming to solve the problem of electromagnetic interference between a phase shifter and an attenuator integrated on a chip in an existing beamforming chip.
[0008] To solve the above technical problems, the present application provides the following technical solutions:
[0009] In a first aspect, the present application provides an electromagnetically coupled phased array amplitude and phase control circuit, the circuit comprising: a first radio frequency signal port, an amplitude and phase control module, and a second radio frequency signal port;
[0010] The first end of the amplitude and phase control module is connected to the first RF signal port, and the second end of the amplitude and phase control module is connected to the second RF signal port;
[0011] The first RF signal port is used for inputting signals, and the second RF signal port is used for outputting signals; or the second RF signal port is used for inputting signals, and the first RF signal port is used for outputting signals;
[0012] The amplitude-phase control module includes an attenuation module and a phase shifting module, the attenuation module is used to modulate the amplitude of the signal in the corresponding circuit, and the phase shifting module is used to modulate the phase of the signal in the corresponding circuit; the first end of the attenuation module is connected to the first end of the amplitude-phase control module, the second end of the attenuation module is connected to the first end of the phase shifting module, and the second end of the phase shifting module is connected to the second end of the amplitude-phase control module; wherein, the connection between the first end of the attenuation module and the first end of the amplitude-phase control module is a first direction, the connection between the second end of the attenuation module and the first end of the phase shifting module is a second direction, the connection between the second end of the phase shifting module and the second end of the amplitude-phase control module is a first direction, and the first direction is perpendicular to the second direction.
[0013] In one embodiment, the attenuation module includes M attenuators, the attenuators include a first end and a second end, the first end of the first attenuator is connected to the first end of the attenuation module, the second end of the (m-1)th attenuator is connected to the first end of the mth attenuator, and the second end of the Mth attenuator is connected to the second end of the attenuation module;
[0014] Wherein, m=2...M, m is an integer greater than or equal to 2, and M is an integer greater than 1.
[0015] In one embodiment, the M attenuators are connected in a straight line arrangement along the first direction or the second direction.
[0016] In one embodiment, the M attenuators are connected in an L-shaped arrangement along the first direction and the second direction.
[0017] In one embodiment, the phase shifting module includes N phase shifters, the phase shifters include a first end and a second end, the first end of the first phase shifter is connected to the first end of the phase shifting module, the second end of the (n-1)th phase shifter is connected to the first end of the nth phase shifter, and the second end of the Nth phase shifter is connected to the second end of the phase shifting module;
[0018] Wherein, n=2...N, n is an integer greater than or equal to 2, and N is an integer greater than 1.
[0019] In one embodiment, the N phase shifters are connected in a line arrangement along the first direction or the second direction.
[0020] In one embodiment, the N phase shifters are connected in an L-shaped arrangement along the first direction and the second direction.
[0021] In one embodiment, M is equal to 5, or M is equal to 6.
[0022] In one embodiment, N is equal to 5, or N is equal to 6.
[0023] In a second aspect, the present application provides an electronic device comprising the electromagnetically-coupled resistant phased array amplitude and phase control circuit as described above.
[0024] The advantage of the technical solution provided by the present application is that it utilizes the characteristic that orthogonal signals (V signal and I signal) do not interfere with each other, and integrates the phase shifter and attenuator modules vertically, thereby improving the harsh on-chip electromagnetic interference environment under high operating frequency bands and small integration areas without adding additional components or increasing additional area. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.
[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0027] Figure 1A schematic diagram of a single-chip integrated phase shift module and an attenuation module provided in an embodiment of the present application;
[0028] Figure 2 A functional schematic diagram of an electromagnetically coupled phased array amplitude and phase control circuit provided in an embodiment of the present application;
[0029] Figure 3A One of the internal schematic diagrams of the attenuation module provided in the embodiment of the present application;
[0030] Figure 3B The second internal schematic diagram of the attenuation module provided in the embodiment of the present application;
[0031] Figure 4A One of the internal schematic diagrams of the phase shift module provided in the embodiment of the present application;
[0032] Figure 4B The second internal schematic diagram of the phase shift module provided in the embodiment of the present application;
[0033] Figure 5 A port diagram of an attenuator provided in an embodiment of the present application;
[0034] Figure 6 A schematic diagram of the ports of the phase shifter provided in an embodiment of the present application;
[0035] Fig. 7A One of the specific structural schematic diagrams of the phased array amplitude and phase control circuit for resisting electromagnetic coupling provided in an embodiment of the present application;
[0036] Figure 7B The second schematic diagram of the specific structure of the phased array amplitude and phase control circuit for resisting electromagnetic coupling provided in the embodiment of the present application;
[0037] Figure 8 A schematic diagram of the specific structure of a conventional anti-electromagnetic coupling phased array amplitude and phase control circuit provided in an embodiment of the present application;
[0038] Fig. 9A One of the simulation diagrams of the attenuation accuracy of the attenuator provided in the embodiment of the present application;
[0039] Fig. 9B The second simulation diagram of the attenuation accuracy of the attenuator provided in the embodiment of the present application;
[0040] Fig. 10A One of the simulation diagrams of the parasitic phase modulation of the attenuator provided in the embodiment of the present application;
[0041] Fig. 10B The second simulation diagram of the parasitic phase modulation of the attenuator provided in the embodiment of the present application;
[0042] Fig.11AOne of the simulation diagrams of the phase shifting accuracy of the phase shifter provided in the embodiment of the present application;
[0043] Fig. 11B The second simulation diagram of the phase shifting accuracy of the phase shifter provided in the embodiment of the present application;
[0044] Fig. 12A One of the simulation diagrams of the parasitic amplitude modulation of the phase shifter provided in the embodiment of the present application;
[0045] Fig. 12B This is the second simulation diagram of the parasitic amplitude modulation of the phase shifter provided in the embodiment of the present application. DETAILED DESCRIPTION
[0046] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0047] It should be noted that when an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element. It is understood that the "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc., if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.
[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. It should also be understood that the terms "include / comprise" or "have" etc. specify the existence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the existence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.
[0049] Because the present application involves multiple components and the ports of many components at the same time, in order to facilitate understanding and accurate positioning, the ports corresponding to the components are uniformly marked with "P (first coordinate, second coordinate)", where the first coordinate represents the reference mark of the corresponding component, and the second coordinate represents the end. For example, if 201 is the reference mark of the attenuation module, the first end of the attenuation module 201 is represented as P (201, 1); if 2011 is the reference mark of the attenuator, the second end of the first attenuator 2011_1 is represented as P (2011_1, 2). Figure 2-Figure 6 All of them involve the figure marks of the ports of various components. In the following content, except for referring to the main structure drawings, the marks related to the ports can be repeatedly referred to these drawings.
[0050] like Figure 2 As shown, the phased array amplitude and phase control circuit for resisting electromagnetic coupling includes: a first radio frequency signal port 100 , an amplitude and phase control module 200 and a second radio frequency signal port 300 .
[0051] A first end P ( 200 , 1 ) of the amplitude and phase control module 200 is connected to the first RF signal port 100 , and a second end P ( 200 , 2 ) of the amplitude and phase control module 200 is connected to the second RF signal port 300 .
[0052] The first RF signal port 100 is used for inputting signals, and the second RF signal port 300 is used for outputting signals; or
[0053] The second RF signal port 300 is used for inputting signals, and the first RF signal port 100 is used for outputting signals.
[0054] The amplitude-phase control module 200 includes an attenuation module 201 and a phase shifting module 202. The attenuation module 201 is used to modulate the amplitude of the signal in the corresponding circuit, and the phase shifting module 202 is used to modulate the phase of the signal in the corresponding circuit; the first end P(201,1) of the attenuation module 201 is connected to the first end P(200,1) of the amplitude-phase control module 200, the second end P(201,2) of the attenuation module 201 is connected to the first end P(202,1) of the phase shifting module 202, and the second end P(202,2) of the phase shifting module 202 is connected to the amplitude-phase control module 2 00; wherein, the connection between the first end P(201,1) of the attenuation module 201 and the first end P(200,1) of the amplitude and phase control module 200 is the first direction, the connection between the second end P(201,2) of the attenuation module 201 and the first end P(202,1) of the phase shifting module 202 is the second direction, and the connection between the second end P(202,2) of the phase shifting module 202 and the second end P(200,2) of the amplitude and phase control module 200 is the first direction, and the first direction is perpendicular to the second direction.
[0055] Furthermore, combined with Figure 3A and Figure 5 or Figure 3B and Figure 5As shown, the attenuation module 201 includes M attenuators 2011, and the attenuator 2011 includes a first end P(2011,1) and a second end P(2011,2). The first end P(2011_1,1) of the first attenuator 2011_1 is connected to the first end P(201,1) of the attenuation module 201, the second end P(2011_(m-1),2) of the (m-1)th attenuator 2011_(m-1) is connected to the first end P(2011_m,1) of the mth attenuator 2011_m, and the second end P(2011_M,2) of the Mth attenuator 2011_M is connected to the second end P(201,2) of the attenuation module 201; wherein, m=2…M, m is an integer greater than or equal to 2, and M is an integer greater than 1. Figure 5 Schematic diagram of ports of the i-th attenuator 2011_i, wherein i=1...M, i is an integer greater than or equal to 1, and M is an integer greater than 1.
[0056] Specifically, the first attenuator 2011_1 to the Mth attenuator 2011_M are combined to modulate the amplitude of the signal in the circuit, and each attenuator 2011 can be independently controlled and used. The first attenuator 2011_1 to the Mth attenuator 2011_M can be attenuators with the same attenuation or attenuators with different attenuation; wherein M is an integer greater than 1.
[0057] like Figure 3A As shown, the M attenuators 2011 are connected in a straight line arrangement along the first direction or the second direction.
[0058] like Figure 3B As shown, M attenuators 2011 are connected in an L-shaped arrangement along the first direction and the second direction.
[0059] It should be noted that Figure 3A This is only an exemplary connection method in which M attenuators 2011 are connected in a straight line arrangement. Figure 3B This is only an exemplary connection method for M attenuators 2011 to be connected in an L-shaped arrangement. In actual application, as long as the M attenuators 2011 are connected in a straight-line arrangement or an L-shaped arrangement, they are all within the protection scope of this patent.
[0060] In actual application, the attenuation module 201 typically includes 5 attenuators 2011 or 6 attenuators 2011, that is, Figure 3A or Figure 3B In the corresponding attenuation module 201, M is equal to 5, or M is equal to 6.
[0061] Furthermore, combined with Figure 4A and Figure 6 or Figure 4B and Figure 6As shown, the phase shifting module 202 includes N phase shifters 2021, and the phase shifter 2021 includes a first end P(2021,1) and a second end P(2021,2). The first end P(2021_1,1) of the first phase shifter 2021_1 is connected to the first end P(202,1) of the phase shifting module 202, the second end P(2021_(n-1),2) of the (n-1)th phase shifter 2021_(n-1) is connected to the first end P(2021_n,1) of the nth phase shifter 2021_n, and the second end P(2021_N,2) of the Nth phase shifter 2021_N is connected to the second end P(202,2) of the phase shifting module 202; wherein, n=2…N, n is an integer greater than or equal to 2, and N is an integer greater than 1. Figure 6 is a port diagram of the j-th phase shifter 2021_j, wherein j=1...N, j is an integer greater than or equal to 1, and N is an integer greater than 1.
[0062] Specifically, the first phase shifter 2021_1 to the Nth phase shifter 2021_N are combined to modulate the phase of the signal in the circuit, and each phase shifter 2021 can be independently controlled and used. The first phase shifter 2021_1 to the Nth phase shifter 2021_N can be phase shifters 2021 with the same phase angle or phase shifters 2021 with different phase angles; wherein N is an integer greater than 1.
[0063] like Figure 4A As shown, N phase shifters 2021 are connected in a straight line arrangement along the first direction or the second direction.
[0064] like Figure 4B As shown, N phase shifters 2021 are connected in an L-shaped arrangement along the first direction and the second direction.
[0065] It should be noted that Figure 4A This is an exemplary connection method in which N phase shifters 2021 are connected in a straight line arrangement. Figure 4B This is only an exemplary connection method for N phase shifters 2021 to be connected in an L-shaped arrangement. In actual application, as long as the N phase shifters 2021 are connected in a straight-line arrangement or an L-shaped arrangement, they are all within the protection scope of this patent.
[0066] In actual application, the phase shift module 202 typically includes five phase shifters 2021 or six phase shifters 2021. Figure 4A or Figure 4B In the corresponding phase shift module 202 , N is equal to 5, or N is equal to 6.
[0067] like Fig. 7A As shown in the figure, the phased array amplitude and phase control circuit for anti-electromagnetic coupling is Figure 2 Based on the combination Figure 3A and Figure 4BThe internal structures of the attenuation module and the phase shift module are further shown, where M is equal to 6 and N is equal to 6.
[0068] Specifically, Fig. 7A The attenuation module 201 shown includes 6 attenuators 2011, namely the first attenuator 2011_1, the second attenuator 2011_2, the third attenuator 2011_3, the fourth attenuator 2011_4, the fifth attenuator 2011_5 and the sixth attenuator 2011_6, and the 6 attenuators 2011 are connected in a straight line along a first direction; the first attenuator 2011_1 to the sixth attenuator 2011_6 each include a first end and a second end, respectively, and are combined to modulate the amplitude of the signal in the circuit; wherein, the first attenuator 2011_1 to the sixth attenuator 2011_6 can be attenuators with the same attenuation or attenuators with different attenuations, and can be independently controlled and used.
[0069] like Fig. 7A The phase shifting module 202 shown includes 6 phase shifters 2021, namely a first phase shifter 2021_1, a second phase shifter 2021_2, a third phase shifter 2021_3, a fourth phase shifter 2021_4, a fifth phase shifter 2021_5 and a sixth phase shifter 2021_6, and the 6 phase shifters 2021 are connected in an L-shaped arrangement along the first direction and the second direction; the first phase shifter 2021_1 to the sixth phase shifter 2021_6 each include a first end and a second end, respectively, and are combined to modulate the phase of the signal in the circuit; wherein the first phase shifter 2021_1 to the sixth phase shifter 2021_6 can be phase shifters 2021 with the same phase angle, or can be phase shifters 2021 with different phase angles, and can all be independently controlled and used.
[0070] Combination Figure 2 , Figure 5-Figure 6 and Fig. 7A As shown in Fig. 7A The connection relationship of each component of the phased array amplitude and phase control circuit for resisting electromagnetic coupling is as follows:
[0071] The first end P(200,1) of the amplitude and phase control module 200 is connected to the first RF signal port 100, and the second end P(200,2) of the amplitude and phase control module 200 is connected to the second RF signal port 300; the first end P(201,1) of the attenuation module 201 is connected to the first end P(200,1) of the amplitude and phase control module 200, the second end P(201,2) of the attenuation module 201 is connected to the first end P(202,1) of the phase shift module 202, and the second end P(202,2) of the phase shift module 202 is connected to the second end P(200,2) of the amplitude and phase control module 200; the first end P(2011_1,1) of the first attenuator 2011_1 is connected to the first end P(2011_1,1) of the attenuation module 201 The first attenuator 2011_1 has a first end P(2011_1, 1), the second end P(2011_1, 2) of the first attenuator 2011_1 is connected to the first end P(2011_2, 1) of the second attenuator 2011_2, the second end P(2011_2, 2) of the second attenuator 2011_2 is connected to the first end P(2011_3, 1) of the third attenuator 2011_3, the second end P(2011_3, 2) of the third attenuator 2011_3 is connected to the first end P(2011_4, 1) of the fourth attenuator 2011_4, the second end P(2011_4, 2) of the fourth attenuator 2011_4 is connected to the first end P(2011_5, 1) of the fifth attenuator 2011_5, and the fifth attenuator 2011_5 is connected to the first end P(2011_5, 1) of the fifth attenuator 2011_5. The second end P(2011_5,2) of the attenuator 2011_5 is connected to the first end P(2011_6,1) of the sixth attenuator 2011_6, and the second end P(2011_6,2) of the sixth attenuator 2011_6 is connected to the second end P(201,2) of the attenuation module 201; the first end P(2021_1,1) of the first phase shifter 2021_1 is connected to the first end P(202,1) of the phase shifting module 202, the second end P(2021_1,2) of the first phase shifter 2021_1 is connected to the first end P(2021_2,1) of the second phase shifter 2021_2, and the second end P(2021_2,2) of the second phase shifter 2021_2 is connected to the third phase shifter The first end P(2021_3,1) of the third phase shifter 2021_3, the second end P(2021_3,2) of the third phase shifter 2021_3 is connected to the first end P(2021_4,1) of the fourth phase shifter 2021_4, the second end P(2021_4,2) of the fourth phase shifter 2021_4 is connected to the first end P(2021_5,1) of the fifth phase shifter 2021_5, the second end P(2021_5,2) of the fifth phase shifter 2021_5 is connected to the first end P(2021_6,1) of the sixth phase shifter 2021_6, and the second end P(2021_6,2) of the sixth phase shifter 2021_6 is connected to the second end P(202,2) of the phase shifting module 202.
[0072] like Fig. 7AThe I signal released by the first attenuator 2011_1 to the sixth attenuator 2011_6 in the attenuation module 201 of the anti-electromagnetic coupling phased array amplitude and phase control circuit shown and the H signal released by the first phase shifter 2021_1 to the sixth phase shifter 2021_6 in the phase shift module 202 have the characteristic of not interfering with each other, thereby improving the harsh on-chip electromagnetic interference environment under high operating frequency band and small integration area without adding additional components or increasing additional area.
[0073] like Figure 7B As shown in the figure, the phased array amplitude and phase control circuit for anti-electromagnetic coupling is Figure 2 Based on the combination Figure 3B and Figure 4A The internal structures of the attenuation module and the phase shift module are further shown, where M is equal to 6 and N is equal to 6.
[0074] compared to Fig. 7A As shown, Figure 7B In the phased array amplitude and phase control circuit for resisting electromagnetic coupling, six attenuators 2011 in the attenuation module 201 are connected in an L-shaped arrangement along the first direction and the second direction, and six phase shifters 2021 in the phase shift module 202 are connected in a straight-line arrangement along the first direction. Figure 7B The functions and specific connection relationships of the various components shown in Fig. 7A This has been explained in the illustrated embodiment and will not be described again here.
[0075] like Figure 7B The H signal released by the first attenuator 2011_1 to the sixth attenuator 2011_6 in the attenuation module 201 of the anti-electromagnetic coupling phased array amplitude and phase control circuit shown and the I signal released by the first phase shifter 2021_1 to the sixth phase shifter 2021_6 in the phase shift module 202 have the characteristic of not interfering with each other. Similarly, without adding additional components and increasing additional area, the harsh on-chip electromagnetic interference environment in the case of high operating frequency band and small integration area is improved.
[0076] In one embodiment, Fig. 7AThe attenuation module 201 in the phased array amplitude and phase control circuit for resisting electromagnetic coupling shown in the figure includes six attenuators 2011 with different attenuations; specifically, the attenuation of the first attenuator 2011_1 is 0.5dB, the attenuation of the second attenuator 2011_2 is 1dB, the attenuation of the third attenuator 2011_3 is 2dB, the attenuation of the fourth attenuator 2011_4 is 4dB, the attenuation of the fifth attenuator 2011_5 is 8dB, and the attenuation of the sixth attenuator 2011_6 is 16dB; in actual application, the first attenuator 2011_1 to the sixth attenuator 2011_2 are used as the attenuator. 11_6 are all in independent control state, then after the RF signal passes through the attenuation module 201, the amplitude of the RF signal can be attenuated by a maximum of 31.5dB (the first attenuator 2011_1 to the sixth attenuator 2011_6 are all in the turned-on state), and at least 0.5dB (only the first attenuator 2011_1 with the smallest attenuation is turned on, and the other attenuators are all in the turned-off state); it is not difficult to understand that if any two, three, four or five attenuators from the first attenuator 2011_1 to the sixth attenuator 2011_6 are selectively turned on, the attenuation of the attenuation module 201 is between 0.5dB and 31.5dB.
[0077] In one embodiment, Fig. 7A The phase shifting module 202 in the shown anti-electromagnetic coupling phased array amplitude and phase control circuit includes six phase shifters 2021 with different phase angles; specifically, the phase angle of the first phase shifter 2021_1 is 5.625°, the phase angle of the second phase shifter 2021_2 is 11.25°, the phase angle of the third phase shifter 2021_3 is 22.5°, the phase angle of the fourth phase shifter 2021_4 is 45°, the phase angle of the fifth phase shifter 2021_5 is 90°, and the phase angle of the sixth phase shifter 2021_6 is 180°; in actual application, the first phase shifter 2021_1 to the sixth phase shifter 2021_2 are phase shifters. 21_6 are all in independent control state, then after the RF signal passes through the phase shifting module 202, the phase of the RF signal can be modulated by a maximum of 354.375° (the first phase shifter 2021_1 to the sixth phase shifter 2021_6 are all in the on state), and the phase can be modulated by a minimum of 5.625° (only the first phase shifter 2021_1 with the smallest phase angle is turned on, and the other phase shifters are all in the off state); it is not difficult to understand that if any two, three, four or five phase shifters from the first phase shifter 2021_1 to the sixth phase shifter 2021_6 are selectively turned on, the phase modulation range of the phase shifting module 202 is between 5.625° and 354.375°.
[0078] Figure 8 The figure shows the specific structure of the conventional phased array amplitude and phase control circuit for anti-electromagnetic coupling. Figure 1The specific internal structures of the attenuation module 201 and the phase shift module 202 are further refined based on the schematic diagram of the single-chip integrated phase shift module and the attenuation module shown in FIG. 1 . The six attenuators (the first attenuator 2011_1 to the sixth attenuator 2011_6) in the attenuation module 201 and the six phase shifters (the first phase shifter 2021_1 to the sixth phase shifter 2021_6) in the phase shift module 202 are all connected in a straight line along the first direction. The specific connection relationship can be combined with reference to FIG. Fig. 7A and Figure 7B , I will not go into details here.
[0079] by Fig. 7A and Figure 8 Taking the corresponding embodiment as an example, the attenuation of the first attenuator 2011_1 to the sixth attenuator 2011_6 is 0.5dB, 1dB, 2dB, 4dB, 8dB, and 16dB respectively, and the phase angles of the first phase shifter 2021_1 to the sixth phase shifter 2021_6 are 5.625°, 11.25°, 22.5°, 45°, 90°, and 180° respectively. The following specifically compares several sets of simulation diagrams of these two sets of embodiments, such as Fig. 9A and Fig. 9B , Fig. 10A and Fig. 10B , Fig.11A and Fig. 11B , Fig. 12A and Fig. 12B As shown; these groups of simulation figures further illustrate that after using the technical solution protected by this patent technology, the amplitude modulation function of the attenuation module 201 and the phase modulation function of the phase shift module 202 are significantly optimized, which further illustrates that the anti-electromagnetic coupling phased array amplitude and phase control circuit provided by this patent technology improves the electromagnetic interference problem between the phase shifter and attenuator integrated on the same chip from a technical level.
[0080] Specifically, Fig. 9A for Figure 8 The simulation diagram of the attenuator attenuation accuracy of the corresponding embodiment, Fig. 9B for Fig. 7A A simulation diagram of the attenuation accuracy of the attenuator corresponding to the embodiment; Fig. 9A and Fig. 9B The horizontal axis represents the various attenuation states (0-63), Fig. 9A and Fig. 9B The vertical axis represents the normalized error of the attenuator; Fig. 9A and Fig. 9B The comparison results show that using Fig. 7A After the corresponding circuit architecture, the attenuation accuracy is optimized from (-3~+1) to (-1~+1). It can be seen that the attenuation accuracy is optimized after using the technical solution protected by this patent technology.
[0081] Specifically, Fig. 10A for Figure 8 The simulation diagram of the attenuator parasitic phase modulation of the corresponding embodiment, Fig. 10B for Fig. 7A A simulation diagram of parasitic phase modulation of the attenuator corresponding to the embodiment; Fig. 10A and Fig. 10B The horizontal axis represents the various attenuation states (0-63), Fig. 10A and Fig. 10B The vertical axis represents the parasitic phase modulation of the attenuator (in degrees); Fig. 10A and Fig. 10B The comparison results show that using Fig. 7A After the corresponding circuit architecture, the parasitic phase modulation is optimized from (-8 to +4) to (-3 to +3). It can be seen that the parasitic phase modulation is optimized after using the technical solution protected by this patent technology.
[0082] Specifically, Fig.11A for Figure 8 The simulation diagram of the phase shifting accuracy of the phase shifter of the corresponding embodiment, Fig. 11B for Fig. 7A A simulation diagram of the phase shifting accuracy of the phase shifter of the corresponding embodiment; Fig.11A and Fig. 11B The horizontal axis represents the frequency (in GHz). Fig.11A and Fig. 11B The ordinate represents the normalized RMS error of the phase shifter; Fig.11A and Fig. 11B The comparison results show that using Fig. 7A After the corresponding circuit architecture, the phase shift accuracy is optimized from 2.5 to 1.7. It can be seen that the phase shift accuracy is optimized after using the technical solution protected by this patent technology.
[0083] Specifically, Fig. 12A for Figure 8 The simulation diagram of the parasitic amplitude modulation of the phase shifter of the corresponding embodiment, Fig. 12B for Fig. 7A A simulation diagram of parasitic amplitude modulation of a phase shifter corresponding to an embodiment; Fig. 12A and Fig. 12B The horizontal axis represents the frequencies (in GHz). Fig. 12A and Fig. 12B The vertical axis represents the parasitic amplitude modulation of the phase shifter (in dB); Fig. 12A and Fig. 12B The comparison results show that using Fig. 7A After the corresponding circuit architecture, the parasitic phase modulation is optimized from (-0.5~﹢1.1) to (-0.7~+0.7). It can be seen that the parasitic amplitude modulation is optimized after using the technical solution protected by this patent technology.
[0084] It should be noted that the electromagnetically coupled resistant phased array amplitude and phase control circuit protected in this application can be used for the transmitting end of the beamforming chip, and can also be used for the receiving end of the beamforming chip.
[0085] The embodiment of the present application also provides an electronic device, including the phased array amplitude and phase control circuit for resisting electromagnetic coupling as described in any of the above embodiments. Similarly, since the electronic device provided in the embodiment of the present application adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.
[0086] The electronic device may be a wireless device or any other electronic device that can use a phased array amplitude and phase control circuit that can resist electromagnetic coupling. The wireless device may be a user equipment (UE), a mobile station, a terminal, an access terminal, a subscriber unit, a base station, etc. The wireless device may also be a cellular phone, a smart phone, a tablet computer, a wireless modem, a personal digital assistant (PDA), a handheld device, a laptop computer, a smart book, a netbook, a cordless phone, a wireless local loop (WLL) station, a Bluetooth device, etc. The wireless device may be capable of communicating with a wireless communication system, or may be capable of receiving signals from a broadcast station, signals from one or more satellites, etc. The wireless device may support one or more wireless communication technologies (e.g., 5G, LTE, CDMA2000, WCDMA, TD-SCDMA, GSM, 802.11, millimeter wave, etc.).
[0087] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0088] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, all of which are within the protection of the present invention.
Claims
1. A phased array amplitude and phase control circuit for resisting electromagnetic coupling, characterized in that: The circuit comprises: a first radio frequency signal port, an amplitude and phase control module, and a second radio frequency signal port; The first end of the amplitude and phase control module is connected to the first RF signal port, and the second end of the amplitude and phase control module is connected to the second RF signal port; The first RF signal port is used for inputting signals, and the second RF signal port is used for outputting signals; or the second RF signal port is used for inputting signals, and the first RF signal port is used for outputting signals; The amplitude-phase control module includes an attenuation module and a phase shifting module, the attenuation module is used to modulate the amplitude of the signal in the corresponding circuit, and the phase shifting module is used to modulate the phase of the signal in the corresponding circuit; the first end of the attenuation module is connected to the first end of the amplitude-phase control module, the second end of the attenuation module is connected to the first end of the phase shifting module, and the second end of the phase shifting module is connected to the second end of the amplitude-phase control module; wherein, the connection between the first end of the attenuation module and the first end of the amplitude-phase control module is a first direction, the connection between the second end of the attenuation module and the first end of the phase shifting module is a second direction, the connection between the second end of the phase shifting module and the second end of the amplitude-phase control module is a first direction, and the first direction is perpendicular to the second direction.
2. The phased array amplitude and phase control circuit for resisting electromagnetic coupling according to claim 1, characterized in that: The attenuation module includes M attenuators, each attenuator includes a first end and a second end, the first end of the first attenuator is connected to the first end of the attenuation module, the second end of the (m-1)th attenuator is connected to the first end of the mth attenuator, and the second end of the Mth attenuator is connected to the second end of the attenuation module; Wherein, m=2...M, m is an integer greater than or equal to 2, and M is an integer greater than 1.
3. The phased array amplitude and phase control circuit for resisting electromagnetic coupling according to claim 2, characterized in that: The M attenuators are connected in a straight line arrangement along the first direction or the second direction.
4. The phased array amplitude and phase control circuit for resisting electromagnetic coupling according to claim 2, characterized in that: The M attenuators are connected in an L-shaped arrangement along the first direction and the second direction.
5. The phased array amplitude and phase control circuit for resisting electromagnetic coupling according to claim 1, characterized in that: The phase shifting module comprises N phase shifters, each phase shifter comprises a first end and a second end, the first end of the first phase shifter is connected to the first end of the phase shifting module, the second end of the (n-1)th phase shifter is connected to the first end of the nth phase shifter, and the second end of the Nth phase shifter is connected to the second end of the phase shifting module; Wherein, n=2...N, n is an integer greater than or equal to 2, and N is an integer greater than 1.
6. The phased array amplitude and phase control circuit for resisting electromagnetic coupling according to claim 5, characterized in that: The N phase shifters are connected in a line arrangement along the first direction or the second direction.
7. The phased array amplitude and phase control circuit for resisting electromagnetic coupling according to claim 5, characterized in that: The N phase shifters are connected in an L-shaped arrangement along the first direction and the second direction.
8. The phased array amplitude and phase control circuit for resisting electromagnetic coupling according to claim 2, characterized in that: Where M is equal to 5, or M is equal to 6.
9. The phased array amplitude and phase control circuit for resisting electromagnetic coupling according to claim 5, characterized in that: Where N is equal to 5, or N is equal to 6.
10. An electronic device, characterized in that: The electronic device comprises the electromagnetically-coupled phased array amplitude and phase control circuit according to any one of claims 1 to 9.