Radio frequency front-end circuit

Abstract

Various scenarios related to Wi-Fi dual-band dual-concurrent (DBDC) radio frequency (RF) front-end circuitry are described. An apparatus configured to facilitate wireless communication in DBDC applications and multiple-input multiple-output (MIMO) applications includes a front-end circuit configured to support transmission of a first band and a second band. The front-end circuit includes at least two antennas, at least two duplexers, a first circuit path, and a second circuit path. The first circuit path is coupled to one of the at least two antennas and is configured to transmit and receive in the first band. The second circuit path is coupled to another of the at least two antennas and is configured to transmit and receive in the second band. The first band and the second band are bands in the Wi-Fi 5 GHz-6 GHz band.

Description

Technical Field

[0001] This application relates generally to radio frequency (RF) front-end design, and more specifically to Wi-Fi dual-band dual-concurrent (DBDC) RF front-end circuit design. Background Technology

[0002] Unless otherwise stated herein, the methods described in this section are not prior art to the claims listed below, and are not acknowledged as prior art by virtue of their inclusion in this section.

[0003] With the increasing prevalence of wireless applications, more and more mobile (or portable) devices are capable of wireless communication via various wireless technologies, such as Wi-Fi (or WiFi) and Bluetooth in dual RF bands. These devices typically feature Wi-Fi and Bluetooth combo chips for 1x1 DBDC and 2x2 multiple-input multiple-output (MIMO) applications. Existing 1x1 DBDC and 2x2 MIMO applications typically require eight critical components—two filters, four single-pole double-throw (SPDT) switches, and two duplexers—to achieve 45 dB isolation between the two frequency bands. These two bands (or dual bands) include a low-frequency band (5180–5905 MHz) and a high-frequency band (5955–7115 MHz). In the ongoing pursuit of reduced manufacturing costs and overall weight, a challenge involves minimizing the number of critical components required in mobile or portable devices while maintaining or enhancing system performance. Therefore, a Wi-Fi DBDC RF front-end circuit design scheme is needed to reduce the number of key components. Summary of the Invention

[0004] The following overview is illustrative only and is not intended to be limiting in any way. That is, it is provided to introduce the concepts, highlights, benefits, and advantages of the novel and non-obvious techniques described herein. Selected embodiments are further described in the detailed description below. Therefore, the following overview is not intended to identify the essential features of the claimed subject matter, nor is it intended to determine the scope of the claimed subject matter.

[0005] The purpose of this invention is to provide solutions, concepts, designs, techniques, methods, and apparatus related to the design of Wi-Fi DBDC RF front-end circuits. Under the various solutions proposed according to this invention, the frequency band can be divided into two parts, namely a low-frequency band and a high-frequency band, and for at least four RF ports, sufficient isolation between the two frequency bands can be provided using at least two antennas and two duplexers. It is believed that the various solutions proposed herein can solve or otherwise alleviate the aforementioned problems to achieve a reduction in the number of critical components in the RF front-end of mobile devices (e.g., from eight critical components to four critical components) while maintaining or enhancing system performance.

[0006] In one aspect, a device configured to facilitate wireless communication in DBDC and MIMO applications may include front-end circuitry configured to support transmission in a first frequency band and a second frequency band. The front-end circuitry may include at least two antennas, at least two duplexers, a first circuit path, and a second circuit path. The first circuit path may be coupled to one of the at least two antennas and may be configured to transmit and receive in the first frequency band. The second circuit path may be coupled to the other of the at least two antennas and may be configured to transmit and receive in the second frequency band. The first and second frequency bands may be separated from the Wi-Fi 5GHz to 6GHz frequency band.

[0007] It is worth noting that while the descriptions provided herein may be applicable to certain radio access technologies, networks, and network topologies (e.g., Wi-Fi and Bluetooth), the proposed concepts, schemes, and any variations / modifications can be implemented in other types of radio access technologies, networks, and network topologies, and used for other types of radio access technologies, networks, and network topologies, such as, but not limited to, ZigBee, 5G, and others. th Generation (5G) / New Radio (NR), Long-Term Evolution (LTE), LTE-Advanced, LTE-Advanced Pro, Internet of Things (IoT), Industrial IoT (IIoT), and Narrowband IoT (NB-IoT). Therefore, the scope of this invention is not limited to the examples described herein. Attached Figure Description

[0008] The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this invention. The drawings illustrate embodiments of the invention and, together with the specific embodiments, serve to explain the principles of the invention. It should be noted that the drawings are not necessarily drawn to scale, as some components may be shown out of proportion to their actual dimensions in order to clearly illustrate the concepts of the invention.

[0009] Figure 1A , Figure 1B , Figure 1C and Figure 1D These are schematic diagrams of example designs based on the solutions proposed according to the present invention.

[0010] Figure 2A and Figure 2B These are schematic diagrams of example designs based on the solutions proposed according to the present invention.

[0011] Figure 3A and Figure 3B These are schematic diagrams of example designs based on the solutions proposed according to the present invention.

[0012] Figure 4A and Figure 4B These are schematic diagrams of example designs based on the solutions proposed according to the present invention.

[0013] Figure 5A and Figure 5B These are schematic diagrams of example designs based on the solutions proposed according to the present invention.

[0014] Figure 6A and Figure 6B These are schematic diagrams of example designs based on the solutions proposed according to the present invention.

[0015] Figure 7A and Figure 7B These are schematic diagrams of the existing design.

[0016] Figure 8 This is a schematic diagram of an example device according to an embodiment of the present invention. Detailed Implementation

[0017] This document discloses detailed embodiments and implementations of the claimed subject matter. However, it should be understood that the disclosed embodiments and implementations are merely illustrative of the claimed subject matter, which can be embodied in various forms. The invention can be embodied in many different forms and should not be construed as limited to the exemplary embodiments and implementations set forth herein. Rather, these exemplary embodiments and implementations are provided so that the description of the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the following description, details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the presented embodiments and implementations.

[0018] The embodiments of this disclosure relate to various techniques, methods, schemes, and / or solutions related to the design of Wi-Fi DBDC RF front-end circuits. According to the invention, multiple possible schemes can be implemented individually or in combination. That is, while these possible solutions may be described individually below, two or more of these possible solutions may be implemented in one combination or another.

[0019] Under various proposed embodiments of the invention, different novel designs of the front-end circuitry can be divided into two parts: one part for the low-frequency band and the other part for the high-frequency band. Furthermore, in each different novel design, at least two antennas and two duplexers can be used to provide sufficient isolation between the two frequency bands. Additionally, at least four RF ports may be present in each different novel design. It is noteworthy that under the various proposed embodiments described herein, the duplexer can be configured to divide the larger frequency band into two or three smaller frequency bands, although the examples provided herein may show the larger frequency band being divided into two smaller frequency bands.

[0020] Figure 1A , Figure 1B and Figure 1C Each example of a front-end circuit design 100A according to the first proposed embodiment of the present invention is illustrated. For details regarding the coupling relationships between ports, frequency dividers, duplexers, and antennas, please refer to [link to relevant documentation]. Figure 1A , Figure 1B and Figure 1C As shown. Reference Figure 1AIn Design 100A, a frequency splitter (SP) divides the first 5GHz–6GHz frequency band (WF1_A, 5180–7115MHz) into two parts: a low-frequency band (5180–5905MHz) and a high-frequency band (5955–7115MHz). The frequency splitter (SP) can be implemented using a duplexer, switch, or other components, as long as the first 5GHz–6GHz frequency band is divided into a low-frequency band and a high-frequency band. When used in a DBDC application, Design 100A can use a first antenna (Ant1) for the low-frequency band (e.g., represented as WF_5G in the figure) and a second antenna (Ant2) for the high-frequency band (e.g., represented as WF_6G in the figure). Another DBDC scenario uses a second antenna (Ant2) for the low-frequency band and a third antenna (Ant3) for the high-frequency band. This also applies to other figures of the invention, such as… Figures 1D to 6B When used in MIMO applications, Design 100A can use Ant1 and a second antenna (Ant2) for Wi-Fi 2.4GHz MIMO, Ant2 and Ant3 for MIMO in the high-frequency band (5955–7115MHz), and Ant1 and Ant2 for MIMO in the low-frequency band (5180–5905MHz). 20dB of isolation can be achieved at 5GHz and 6GHz. The new Design 100A is compared with... Figure 7A The existing design 700A and Figure 7B Compared to the existing design 700B, it can be seen that the newly designed front-end circuit 100A uses only four components, while Figure 7B The existing design 700B and Figure 7A The existing design of the 700A front-end circuit uses eight components. Figure 1B An example DBDC scenario of the 100A is shown, in which the second antenna (Ant2) is used for the low frequency band and the third antenna (Ant3) is used for the high frequency band. Figure 1C Another DBDC scenario for example design 100A is shown, where the first antenna (Ant1) is used for the low-frequency WG_5G band, and the second antenna (Ant2) is used for the high-frequency WF_6G band. It is worth noting that although 20dB isolation is used as an example in the descriptions and illustrations of various examples, different amounts of isolation (e.g., 10dB, 45dB, or others) can be achieved under various proposed schemes according to the present invention.

[0021] Figure 1D An example design 100B of the front-end circuitry according to a first proposed embodiment of the present invention is shown. (Reference) Figure 1DDesign 100B may include three antennas and five RF ports, including a first 2GHz band port and a second 2GHz band port (e.g., two Wi-Fi G-band (WF1_G and WF2_G, 2412–2484MHz) RF ports), a third 2GHz band port (e.g., a Bluetooth RF port), and a first 5GHz–6GHz band port and a second 5GHz–6GHz band port (e.g., two Wi-Fi 5GHz–6GHz band (WF1_A and WF2_A, 5180–7115MHz) RF ports). Furthermore, Design 100B may use three duplexers and one frequency splitter. The frequency splitter (SP) divides the first 5GHz–6GHz band (WF1_A, 5180–7115MHz) into two parts: the WF_5GHz band (5180–5905MHz) and the WF_6GHz band (5955–7115MHz). The positions of WF_5GHz (5180~5905MHz) and WF_6GHz (5955~7115MHz) can be interchanged or otherwise switched. The order of the RF ports from top to bottom can be as follows: Figure 1D As shown, there are Bluetooth ports (or Wi-Fi G-band ports), Wi-Fi 5GHz–6GHz band ports, Wi-Fi G-band ports (or Bluetooth ports), Wi-Fi 5GHz–6GHz band ports, and Wi-Fi G-band ports (or Bluetooth ports). The positions and order of the duplexers and antennas in Design 100B can be interchanged. When used as a DBDC, 20dB isolation can be achieved between Ant1 and Ant3 or between Ant3 and Ant2 at 5GHz and 6GHz. It is worth noting that the figure shows the isolation (e.g., 20dB) between the two antennas of a given antenna pair in the context of the corresponding DBDC application. Figure 1D The example shown illustrates two isolations for two pairs of antennas due to the presence of two DBDC applications. This also applies to other figures in this application.

[0022] For detailed connection information regarding the three antennas, five RF ports, three duplexers, and one frequency divider, please refer to [link / reference needed]. Figure 1D As shown. In Figure 1DIn this configuration, the Bluetooth RF port is coupled to the first input / output port of duplexer_1, the first 5GHz-6GHz band RF port is coupled to the second input / output port of duplexer_1, and the output / input port of duplexer_1 is coupled to the third antenna (Ant3). The Wi-Fi G-band RF port WF1_G is coupled to the first input / output port of duplexer_2, the second 5GHz-6GHz band RF port is coupled to the input / output port of the frequency divider, the first output / input port of the frequency divider is coupled to the second input / output port of duplexer_2, and the output / input port of duplexer_2 is coupled to the first antenna (Ant1). The second output / input port of the frequency divider is coupled to the first input / output port of duplexer_3, the Wi-Fi G-band RF port WF2_G is coupled to the second input / output port of duplexer_3, and the output / input port of duplexer_3 is coupled to the second antenna (Ant2).

[0023] Figure 2A and Figure 2B Each illustrates various aspects of an example design 200A or 200B of the front-end circuitry under the second proposed embodiment of the present invention. References Figure 2A and Figure 2B Each design of the 200A and 200B may include three antennas and five RF ports, including one Bluetooth RF port, two Wi-Fi G-band (WF1_G and WF2_G, 2412–2484MHz) RF ports, and two Wi-Fi 5GHz–6GHz band (WF1_A and WF2_A, 5180–7115MHz) RF ports. Furthermore, each design of the 200A and 200B may use three duplexers and one frequency divider. The positions of WF_5GHz (5180–5905MHz) and WF_6GHz (5955–7115MHz) may be interchanged or otherwise switched. Figure 2A and Figure 2B As shown in the diagram, the RF ports, from top to bottom, can be: Bluetooth port (or Wi-Fi G-band port), Wi-Fi G-band port (or Bluetooth port), Wi-Fi 5GHz~6GHz band port, Wi-Fi G-band port (or Bluetooth port), and Wi-Fi 5GHz~6GHz band port. The positions and order of the duplexers and antennas can be interchanged in each design of 200A and 200B. 20dB isolation can be achieved at 5GHz and 6GHz. For details on the coupling relationships between ports, frequency dividers, duplexers, and antennas, please refer to [link to relevant documentation]. Figure 2A , Figure 2B As shown.

[0024] Figure 3A and Figure 3B Each illustrates various aspects of an example design 300A or 300B of the front-end circuitry according to the third proposed embodiment of the present invention. References Figure 3A and Figure 3B Each design of 300A and 300B may include three antennas and four RF ports, including two Wi-Fi G-band RF ports (WF1_G and WF2_G, 2412–2484MHz) and two Wi-Fi 5GHz–6GHz band RF ports (WF1_A and WF2_A, 5180–7115MHz). Furthermore, each design of 300A and 300B may use three duplexers and one frequency divider. The positions of WF_5GHz (5180–5905MHz) and WF_6GHz (5955–7115MHz) may be interchanged or otherwise switched. Figure 3A and Figure 3B For each of the RF ports shown, the order from top to bottom can be: Wi-Fi G-band port, Wi-Fi 5GHz~6GHz band port, Wi-Fi G-band port, and Wi-Fi 5GHz~6GHz band port. Alternatively, the order can be: Wi-Fi 5GHz~6GHz band port, Wi-Fi G-band port, Wi-Fi 5GHz~6GHz band port, and Wi-Fi G-band port. In Design 300, a low-pass filter (LPF) can be used in one of the multiple paths without a duplexer. The position and order of the duplexer and the antenna can be interchanged in each design of Designs 300A and 300B. 20dB isolation can be achieved at 5GHz and 6GHz. For details on the coupling relationships between ports, frequency dividers, duplexers, filters, and antennas, please refer to [link to relevant documentation]. Figure 3A , Figure 3B As shown.

[0025] Figure 4A and Figure 4B Each illustrates various aspects of an example design 400A or 400B of the front-end circuitry according to the fourth proposed embodiment of the present invention. References Figure 4A and Figure 4BEach of the 400A and 400B designs can include three antennas and five RF ports, including one Bluetooth RF port, two Wi-Fi G-band (WF1_G and WF2_G, 2412–2484MHz) RF ports, and two Wi-Fi 5GHz–6GHz band (WF1_A and WF2_A, 5180–7115MHz) RF ports. Additionally, three duplexers, one double-port double-throw (DPDT) switch, and one frequency divider can be used in each of the 400A and 400B designs. Figure 4A One Wi-Fi 5GHz-6GHz band RF port is coupled to the input / output port of the frequency divider. The output / input port of the frequency divider transmitting the 6GHz band is coupled to one input / output port of the DPDT. One output / input port of the DPDT transmits the 6GHz band and is coupled to duplexer_2. Another Wi-Fi 5GHz-6GHz band RF port is coupled to another input / output port of the DPDT. The other output / input port of the DPDT transmits a band from another Wi-Fi 5GHz-6GHz band and is coupled to duplexer_1. The Wi-Fi G-band RF port (WF1_G) is coupled to duplexer_2, the Wi-Fi G-band RF port (WF2_G) is coupled to duplexer_3, and the Bluetooth RF port is coupled to duplexer_1. The positions of WF_5GHz (5180-5905MHz) and WF_6GHz (5955-7115MHz) can be interchanged or otherwise switched. Figure 4A and Figure 4B As shown in the diagram, the RF ports, from top to bottom, can be: Bluetooth port (or Wi-Fi G-band port), Wi-Fi 5GHz~6GHz band port, Wi-Fi G-band port (or Bluetooth port), Wi-Fi 5GHz~6GHz band port, and Wi-Fi G-band port (or Bluetooth port). The positions and order of the duplexers and antennas in each design of the 400A and 400B can be interchanged. 20dB isolation can be achieved between Ant1 and Ant2 at 5GHz and 6GHz. For details on the coupling relationships between ports, dividers, DPDTs, duplexers, and antennas, please refer to [link to relevant documentation]. Figure 4A , Figure 4B As shown.

[0026] Figure 5A and Figure 5B Each illustrates various aspects of an example design 500A or 500B of the front-end circuitry according to the fifth proposed embodiment of the present invention. Reference Figure 5A and Figure 5BEach of the 500A and 500B designs may include three antennas and five RF ports, comprising one Bluetooth RF port, two Wi-Fi G-band (WF1_G and WF2_G, 2412–2484MHz) RF ports, and two Wi-Fi 5GHz–6GHz band (WF1_A and WF2_A, 5180–7115MHz) RF ports. Additionally, three duplexers, one DPDT switch, and one frequency divider can be used in each of the 500A and 500B designs. The positions of WF_5GHz (5180–5905MHz) and WF_6GHz (5955–7115MHz) can be interchanged or otherwise switched. Figure 5A and Figure 5B As shown in the diagram, the RF ports, from top to bottom, can be: Bluetooth port (or Wi-Fi G-band port), Wi-Fi G-band port (or Bluetooth interface), Wi-Fi 5GHz~6GHz band port, Wi-Fi G-band port (or Bluetooth port), and Wi-Fi 5GHz~6GHz band port. The positions and order of the duplexers and antennas can be interchanged in each design of the 500A and 500B. 20dB isolation can be achieved at 5GHz and 6GHz. For details on the coupling relationships between ports, frequency dividers, DPDTs, duplexers, and antennas, please refer to [link to relevant documentation]. Figure 5A , Figure 5B As shown.

[0027] Figure 6A and Figure 6B Each illustrates various aspects of an example design 600A or 600B of the front-end circuitry according to the fifth proposed embodiment of the present invention. Reference Figure 6A and Figure 6B Design 600 may include three antennas and four RF ports. The four RF ports include two Wi-Fi G-band (WF1_G and WF2_G, 2412–2484MHz) RF ports and two Wi-Fi 5GHz–6GHz band (WF1_A and WF2_A, 5180–7115MHz) RF ports. Additionally, two duplexers, one DPDT switch, and one frequency divider can be used in each of the designs 600A and 600B. For specific connection relationships between the two duplexers, one DPDT switch, one frequency divider, the RF ports, and the three antennas, please refer to [link to documentation]. Figure 6A and Figure 6B The positions of WF_5GHz (5180~5905MHz) and WF_6GHz (5955~7115MHz) can be interchanged or otherwise exchanged. For example... Figure 6A and Figure 6BAs shown in the diagram, the RF ports, from top to bottom, can be: Wi-Fi G-band port (or Bluetooth port), Wi-Fi 5GHz~6GHz band port, Wi-Fi G-band port (or Bluetooth port), and Wi-Fi 5GHz~6GHz band port. The positions and order of the duplexers and antennas can be interchanged in each design of the 600A and 600B. 20dB isolation can be achieved at 5GHz and 6GHz. For details on the coupling relationships between ports, frequency dividers, DPDTs, duplexers, and antennas, please refer to [link to relevant documentation]. Figure 6A , Figure 6B As shown.

[0028] exist Figure 6A In this configuration, the first Wi-Fi G-band RF port is coupled to the first input / output port of duplexer_1; the first Wi-Fi 5GHz-6GHz band RF port is coupled to the input / output port of the frequency divider; the first output / input port of the frequency divider is coupled to the first input / output port of duplexer_1; and the output / input port of duplexer_1 is coupled to the third antenna (Ant3). The second output / input port of the frequency divider is coupled to the first input / output port of the DPDT; the first output / input port of the DPDT is coupled to the second input / output port of duplexer_2; the second Wi-Fi G-band RF port is coupled to the first input / output port of duplexer_2; and the output / input port of duplexer_2 is coupled to the first antenna (Ant1). The second Wi-Fi 5GHz-6GHz band port is coupled to the second input / output port of the DPDT; and the second output / input port of the DPDT is coupled to the second antenna (Ant2).

[0029] For reference and comparison with different new designs under various proposed embodiments according to the present invention, Figure 7A and Figure 7B Existing designs for the front-end circuitry, 700A or 700B, are shown respectively. (Reference) Figure 7A and Figure 7BEach of the 700A and 700B designs utilizes a total of eight components to achieve 45dB isolation. The first 5GHz–6GHz band (WF1_A, 5180–7115MHz) port is optional; it can be a through path (WF1_A, 5180–7115MHz) or a high-frequency band (5955–7115MHz) path using a first SPDT (SPDT1), a second SPDT (SPDT2), and a high-frequency band pass filter (BPF). The second 5GHz–6GHz band (WF2_A, 5180–7115MHz) port is also optional; it can be a through path (WF2_A, 5180–7115MHz) or a low-frequency band (5180–5905MHz) path using a third SPDT (SPDT3), a fourth SPDT (SPDT4), and a low-frequency BPF. 20dB isolation is possible at 5GHz and 6GHz.

[0030] When operating in DBDC, each design in both the 700A and 700B can use a first antenna (Ant1) and a second antenna (Ant2). The first 5GHz–6GHz band (WF1_A, 5180–7115MHz) port is selected for the high-frequency band (5955–7115MHz) path and assigned to Ant1. The second 5GHz–6GHz (WF2_A, 5180–7115MHz) port is selected for the low-frequency band (5180–5905MHz) path and assigned to Ant2. When operating in MIMO, each design in both the 700A and 700B can also use Ant1 and Ant2. The first 5GHz–6GHz band (WF1_A, 5180–7115MHz) port is selected for the direct path (WF1_A, 5180–7115MHz) and assigned to Ant1. The second 5GHz-6GHz frequency band (WF2_A, 5180-7115MHz) port was also selected for the pass-through path (WF2_A, 5180-7115MHz) and assigned to Ant2.

[0031] Illustrative Implementation

[0032] Figure 8 An example apparatus 800 according to an embodiment of the present invention is shown. Apparatus 800 can perform various functions to implement the schemes, techniques, processes, and methods described herein related to Wi-Fi DBDC RF front-end circuit design, including the various schemes described above regarding proposed designs, concepts, schemes, systems, and methods, as well as the processes described below. For example, apparatus 800 can be implemented in user equipment (UE) or a site (STA).

[0033] In a Wi-Fi environment, device 800 can be part of an electronic device, which can be an access point (AP) STA or a non-AP STA, such as a portable or mobile device, wearable device, wireless communication device, or computing device. When implemented in an STA, device 800 can be implemented in a smartphone, smartwatch, personal digital assistant, digital camera, or computing device such as a tablet, laptop, or notebook computer. Device 800 can also be part of a machine-type device, which can be an IoT device, home device, wired communication device, or computing device, such as a non-mobile or fixed device. For example, device 800 can be implemented in a smart thermostat, smart refrigerator, smart door lock, wireless speaker, or home control center. When implemented in a network device or as a network device, device 800 can be implemented in a network node, such as an AP in a WLAN.

[0034] In some implementations, device 800 may be implemented as one or more integrated circuit (IC) chips, such as, but not limited to, one or more single-core processors, one or more multi-core processors, one or more reduced-instruction-set computing (RISC) processors, or one or more complex-instruction-set computing (CISC) processors. Device 800 may include Figure 8 At least some of the components shown, such as processor 812. Device 800 may also include one or more other components unrelated to the proposed embodiments of the invention (e.g., internal power supply, display device, and / or user interface device), and therefore, for the sake of brevity, such components of device 800 are not listed. Figure 8 It is shown in the image and is not described below.

[0035] On the one hand, processor 812 can be implemented as one or more single-core processors, one or more multi-core processors, one or more RISC processors, or one or more CISC processors. That is, even though the singular term "processor" is used herein to refer to processor 812, according to the invention, processor 812 may include multiple processors in some embodiments and a single processor in other embodiments. On the other hand, processor 812 can be implemented as hardware (and optionally, firmware) with electronic components, including, for example, but not limited to, one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors, and / or one or more varactors, configured and arranged to achieve a specific purpose according to the invention. In other words, in at least some embodiments, processor 812 is a dedicated machine specifically designed, arranged, and configured to perform specific tasks, including tasks related to the design of Wi-Fi DBDC RF front-end circuitry according to various embodiments of the invention.

[0036] In some embodiments, device 800 may further include a transceiver 816 coupled to processor 812. Transceiver 816 may include a transmitter capable of wirelessly transmitting data and a receiver capable of wirelessly receiving data. In some embodiments, transceiver 816 may include front-end circuitry 818, in which various proposed designs according to this disclosure may be implemented, such as those referenced... Figures 1A-6B The transceiver 816 is described herein as 100A, 100B, 200A, 200B, 300A, 300B, 400A, 400B, 500A, 500B, 600A, and 600B. The transceiver 816 may also be equipped with multiple antennas 815(1) to 815(N), where N is a positive integer greater than 1, enabling the transceiver 816 to perform wireless communication (e.g., transmit and receive) via front-end circuitry 818 and antennas 815(1) to 815(N). It is noteworthy that although the transceiver 816 is shown as external to and separate from the processor 812, in some embodiments, the transceiver 816 may be an integral part of the processor 812 as a system-on-chip (SoC).

[0037] In some embodiments, device 800 may further include memory 814 coupled to and accessible by processor 812 and capable of storing data therein. In some embodiments, memory 814 may include a type of random-access memory (RAM), such as dynamic RAM (DRAM), static RAM (SRAM), thyristor RAM (T-RAM), and / or zero-capacitor RAM (Z-RAM). Alternatively or additionally, memory 814 may include a type of read-only memory (ROM), such as mask ROM, programmable ROM (PROM), erasable programmable ROM (EPROM), and / or electrically erasable programmable ROM (EEPROM). Alternatively or additionally, memory 814 may include a type of non-volatile random-access memory (NVRAM), such as flash memory, solid-state memory, ferroelectric RAM (FeRAM), or magnetoresistive RAM.

[0038] RAM (magnetoresistive RAM, MRAM) and / or phase-change memory.

[0039] In various proposed embodiments related to the Wi-Fi DBDC RF front-end circuit design according to the present invention, device 800 may have a front-end circuit 818 configured to facilitate wireless communication in DBDC and MIMO applications, the front-end circuit 818 being configured to support transmission in a first frequency band (e.g., a low frequency band) and a second frequency band (e.g., a high frequency band). The front-end circuit 818 may include at least two duplexers, a first circuit path, and a second circuit path, and may also include at least two antennas. The first circuit path may be coupled to one of the at least two antennas and may be configured to transmit and receive in the first frequency band. The second circuit path may be coupled to the other of the at least two antennas and may be configured to transmit and receive in the second frequency band. The first and second frequency bands may be separated from the Wi-Fi 5GHz to 6GHz frequency band. In some embodiments, the front-end circuit 818 may be configured with at least two antennas 815(1) to 815(N) and two duplexers providing isolation between the low-frequency and high-frequency bands. Furthermore, the front-end circuit 818 may also be configured with at least four RF ports. In some embodiments, the front-end circuitry 818 may include a frequency divider configured to divide the Wi-Fi 5GHz to 6GHz band (e.g., within the range of 5180 to 7115MHz or different ranges) into a first band in the range of 5180 to 5905MHz and a second band in the range of 5955 to 7115MHz. In some embodiments, the frequency divider may include a duplexer or a switch.

[0040] In some embodiments, the front-end circuitry 818 may further include at least a first duplexer and a Wi-Fi processor 828 having multiple RF ports, wherein one of the multiple RF ports is configured with a Wi-Fi 5GHz to 6GHz operating frequency band and connected to a frequency divider. Furthermore, the frequency divider may be coupled to the first duplexer via a first circuit path. In some embodiments, one of the multiple RF ports may be configured with a Wi-Fi 2GHz operating frequency band and connected to the first duplexer. Additionally, another of the multiple RF ports may be configured with a Bluetooth operating frequency band and connected to a second duplexer. Alternatively or additionally, another of the multiple RF ports may be configured with a Wi-Fi 2GHz operating frequency band and connected to a second duplexer. The Wi-Fi processor 828 may be located outside the front-end circuitry 818, which includes RF ports corresponding to the RF ports of the Wi-Fi processor 828.

[0041] In some embodiments, the front-end circuitry 818 may be configured with at least two (e.g., two or three) antennas, three duplexers including a first duplexer, and a Wi-Fi processor 828 having five RF ports (e.g., as shown in designs 100A, 100B, 200A, and 200B). The five RF ports include: a Bluetooth RF port, first and second Wi-Fi G-band RF ports at 2412–2484 MHz, and first and second Wi-Fi 5 GHz–6 GHz band RF ports at 5180–7115 MHz. In some embodiments, the physical locations and their order of the three duplexers and the physical locations and their order of the at least two antennas may be interchanged. Additionally, the physical location order of the five RF ports from one side of the front-end circuitry to the opposite side may be: a Bluetooth RF port, a first Wi-Fi 5 GHz–6 GHz band RF port, a first Wi-Fi G-band RF port, a second Wi-Fi 5 GHz–6 GHz band RF port, and a second Wi-Fi G-band RF port. Furthermore, the location of the first Wi-Fi 5GHz-6GHz band RF port can be interchanged with the location of the second Wi-Fi 5GHz-6GHz band RF port. Additionally, the location of a Bluetooth RF port can be interchanged with either the first or second Wi-Fi G-band RF port.

[0042] In some implementations, such as in designs 100A and 200A, the front-end circuitry 818 may include a first antenna (Ant1), a second antenna (Ant2), and a third antenna (Ant3). A frequency divider may be coupled to the second of the three duplexers via a second circuit path. Further, in DBDC applications, for a first type of DBDC (Type 1), the first antenna may be used in a first frequency band, and the second antenna may be used in a second frequency band. Additionally, in DBDC applications, for a second type of DBDC (Type 2), the second antenna may be used in a first frequency band, and the third antenna may be used in a second frequency band. Moreover, in MIMO applications, the first and second antennas may be used for Wi-Fi 2.4GHz MIMO, the second and third antennas may be used for high-frequency MIMO in the 5955–7115MHz range, and the first and second antennas may be used for low-frequency MIMO in the 5180–5905MHz range.

[0043] In some implementations, such as in design 100B, the front-end circuitry 818 may include a first antenna (Ant1), a second antenna (Ant2), and a third antenna (Ant3). Further, in DBDC applications, for a first type of DBDC, the first antenna can be used for a second band of a Wi-Fi 5GHz–6GHz band port, and the third antenna can be used for a first band of another Wi-Fi 5GHz–6GHz band port. For a second type of DBDC, the second antenna can be used for a first band of a Wi-Fi 5GHz–6GHz band port, and the third antenna can be used for a second band of another Wi-Fi 5GHz–6GHz band port. Furthermore, in MIMO applications, the first and second antennas can be used for Wi-Fi 2.4GHz MIMO, the second and third antennas can be used for high-frequency MIMO in the 5955–7115MHz range, and the first and second antennas can be used for low-frequency MIMO in the 5180–5905MHz range.

[0044] In some implementations, such as in design 200B, the front-end circuitry 818 may include a first antenna (Ant1), a second antenna (Ant2), and a third antenna (Ant3). Furthermore, in DBDC applications, for a first type of DBDC, the third antenna can be used in the second band of a Wi-Fi 5GHz–6GHz band port, and the first antenna can be used in the first band of another Wi-Fi 5GHz–6GHz band port. For a second type of DBDC, the first antenna can be used in the second band of another Wi-Fi 5GHz–6GHz band port, and the second antenna can be used in the first band of a Wi-Fi 5GHz–6GHz band port. Additionally, in MIMO applications, the first and second antennas can be used for Wi-Fi 2.4GHz MIMO, the first and third antennas can be used for high-frequency MIMO in the 5955–7115MHz range, and the first and second antennas can be used for low-frequency MIMO in the 5180–5905MHz range.

[0045] In some embodiments, the front-end circuit 818 may be configured with at least two (e.g., two or three) antennas, two duplexers including a first duplexer, a filter (e.g., a low-pass filter or a high-pass filter), and five RF ports (e.g., designs 300A and 300B), including: first and second Wi-Fi G-band RF ports in the 2412–2484 MHz range, and first and second Wi-Fi 5 GHz–6 GHz band RF ports in the 5180–7115 MHz range. In some embodiments, the physical locations and order of the two duplexers and the physical locations and order of the three antennas may be interchanged. Additionally, the physical location order of the four RF ports from one side of the front-end circuit to the opposite side may be: first Wi-Fi G-band RF port, first Wi-Fi 5 GHz–6 GHz band RF port, second Wi-Fi G-band RF port, and second Wi-Fi 5 GHz–6 GHz band RF port. Furthermore, the location of the RF port in the first Wi-Fi 5GHz to 6GHz band can be interchanged with the location of the RF port in the second Wi-Fi 5GHz to 6GHz band.

[0046] In some implementations, such as in design 300A, the front-end circuitry 818 may include a first antenna (Ant1), a second antenna (Ant2), and a third antenna (Ant3). Furthermore, in DBDC applications, for a first type of DBDC, the third antenna is used for the first band of another Wi-Fi 5GHz–6GHz band port, and the first antenna is used for the second band of a Wi-Fi 5GHz–6GHz band port. For a second type of DBDC, the second antenna may be coupled to a divider via a filter for the first band of a Wi-Fi 5GHz–6GHz band port, and the third antenna may be used for the second band of another Wi-Fi 5GHz–6GHz band port. Additionally, in MIMO applications, the first and third antennas may be used for Wi-Fi 2.4GHz MIMO, for high-frequency MIMO in the 5955–7115MHz range, and for low-frequency MIMO in the 5180–5905MHz range.

[0047] In some implementations, such as in design 300B, the front-end circuitry 818 may include a first antenna (Ant1), a second antenna (Ant2), and a third antenna (Ant3). Furthermore, in DBDC applications, for a first type of DBDC, the first antenna is used for a first band of a Wi-Fi 5GHz–6GHz band port, and the second antenna is used for a second band of another Wi-Fi 5GHz–6GHz band port. For a second type of DBDC, the third antenna is used for the second band of the aforementioned Wi-Fi 5GHz–6GHz band port, and the second antenna is used for the first band of another Wi-Fi 5GHz–6GHz band port. The third antenna is coupled to a frequency divider via a filter. Furthermore, in MIMO applications, the first and second antennas can be used for Wi-Fi 2.4GHz MIMO, the second and third antennas can be used for high-frequency MIMO in the 5955–7115MHz range, and the first and second antennas can be used for low-frequency MIMO in the 5180–5905MHz range.

[0048] In some implementations, the front-end circuitry 818 may be configured with at least two (e.g., two or three) antennas, three duplexers including a first duplexer, a DPDT switch, and five RF ports (e.g., as shown in designs 400A, 400B, 500A, and 500B), including: a Bluetooth RF port, first and second Wi-Fi G-band RF ports at 2412–2484 MHz, and first and second Wi-Fi 5 GHz–6 GHz band RF ports at 5180–7115 MHz. In some implementations, the physical locations and order of the three duplexers and the physical locations and order of the at least two antennas may be interchanged. Additionally, the order of the physical locations of the five RF ports from one side of the front-end circuitry to the opposite side may be: a Bluetooth RF port, a first Wi-Fi 5 GHz–6 GHz band RF port, a first Wi-Fi G-band RF port, a second Wi-Fi 5 GHz–6 GHz band RF port, and a second Wi-Fi G-band RF port. Furthermore, the positions of the first Wi-Fi 5GHz-6GHz band RF port and the second Wi-Fi 5GHz-6GHz band RF port can be interchanged. Additionally, the position of a Bluetooth RF port can be interchanged with the position of either the first or second Wi-Fi G-band RF port.

[0049] In some implementations, such as in design 400A, the front-end circuitry 818 may include a first antenna (Ant1), a second antenna (Ant2), and a third antenna (Ant3). Furthermore, in DBDC applications, the second antenna can be used for a first band of a Wi-Fi 5GHz–6GHz band port, and the first antenna can be coupled via a DPDT switch to another 5GHz–6GHz band RF port for a second band of that RF port. Additionally, in MIMO applications, the first and second antennas can be used for Wi-Fi 2.4GHz MIMO; the first and third antennas can be used for high-frequency MIMO in the 5955–7115MHz range; and the second and third antennas can be used for low-frequency MIMO in the 5180–5905MHz range.

[0050] In some implementations, such as in design 400B, the front-end circuitry 818 may include a first antenna (Ant1), a second antenna (Ant2), and a third antenna (Ant3). Furthermore, in DBDC applications, the third antenna can be used for a second band of a Wi-Fi 5GHz–6GHz band port, and the first antenna can be coupled to another 5GHz–6GHz band RF port via a DPDT switch for the first band of that other 5GHz–6GHz band RF port. Additionally, in MIMO applications, the first and second antennas can be used for Wi-Fi 2.4GHz MIMO, the second and third antennas can be used for high-frequency MIMO in the 5955–7115MHz range, and the first and second antennas can be used for low-frequency MIMO in the 5180–5905MHz range.

[0051] In some implementations, such as in design 500A, the front-end circuitry 818 may include a first antenna (Ant1), a second antenna (Ant2), and a third antenna (Ant3). Furthermore, in DBDC applications, the third antenna can be used for a first band of a Wi-Fi 5GHz–6GHz band port, and the first antenna can be coupled via a DPDT switch to another 5GHz–6GHz band RF port for a second band of that RF port. Additionally, in MIMO applications, the first and second antennas can be used for Wi-Fi 2.4GHz MIMO, for high-frequency MIMO in the 5955–7115MHz range, and for low-frequency MIMO in the 5180–5905MHz range.

[0052] In some implementations, such as in design 500B, the front-end circuitry 818 may include a first antenna (Ant1), a second antenna (Ant2), and a third antenna (Ant3). Furthermore, in DBDC applications, the second antenna can be used for a second band of a Wi-Fi 5GHz–6GHz band port, and the first antenna can be coupled to another 5GHz–6GHz band RF port via a DPDT switch for the first band of that other 5GHz–6GHz band RF port. Additionally, in MIMO applications, the first and second antennas can be used for Wi-Fi 2.4GHz MIMO, the second and third antennas can be used for high-frequency MIMO in the 5955–7115MHz range, and the first and third antennas can be used for low-frequency MIMO in the 5180–5905MHz range.

[0053] In some embodiments, the front-end circuit 818 may be configured with at least two (e.g., two or three) antennas, two duplexers including a first duplexer, a DPDT switch, and four RF ports (e.g., designs 600A and 600B), including: first and second Wi-Fi G-band RF ports in the 2412–2484 MHz range, and first and second Wi-Fi 5 GHz–6 GHz band RF ports in the 5180–7115 MHz range. In some embodiments, the physical locations and order of the two duplexers and the physical locations and order of the three antennas may be interchanged. Additionally, the order of the physical locations of the four RF ports from one side of the front-end circuit to the opposite side may be: first Wi-Fi G-band RF port, first Wi-Fi 5 GHz–6 GHz band RF port, second Wi-Fi G-band RF port, and second Wi-Fi 5 GHz–6 GHz band RF port. Furthermore, the positions of the RF ports in the first Wi-Fi 5GHz to 6GHz band and the second Wi-Fi 5GHz to 6GHz band can be interchanged.

[0054] In some implementations, such as in design 600A, the front-end circuitry 818 may include a first antenna (Ant1), a second antenna (Ant2), and a third antenna (Ant3). Furthermore, in DBDC applications, the third antenna can be used for a first band of a Wi-Fi 5GHz–6GHz band port, and the first antenna can be coupled via a DPDT switch to another 5GHz–6GHz band RF port for a second band of that RF port. Moreover, in MIMO applications, the first and third antennas can be used for Wi-Fi 2.4GHz MIMO; the first and second antennas can be used for high-frequency MIMO in the 5955–7115MHz range; and the second and third antennas can be used for low-frequency MIMO in the 5180–5905MHz range.

[0055] In some implementations, such as in design 600B, the front-end circuitry 818 may include a first antenna (Ant1), a second antenna (Ant2), and a third antenna (Ant3). Furthermore, in DBDC applications, the second antenna can be used for a second band of a Wi-Fi 5GHz–6GHz band port, and the first antenna can be coupled to another 5GHz–6GHz band RF port via a DPDT switch for the first band of that other 5GHz–6GHz band RF port. Moreover, in MIMO applications, the first and second antennas can be used for Wi-Fi 2.4GHz MIMO, the second and third antennas can be used for high-frequency MIMO in the 5955–7115MHz range, and the first and third antennas can be used for low-frequency MIMO in the 5180–5905MHz range.

[0056] Additional Notes

[0057] The topics described herein sometimes illustrate different components contained within or connected to other different components. It is important to understand that the architectures depicted are merely examples, and many other architectures can actually be implemented to achieve the same functionality. Conceptually, any arrangement of components that achieve the same functionality is effectively “associated” to achieve the desired function. Therefore, any two components combined here to achieve a particular function can be considered “associated” with each other to achieve the desired function, regardless of the architecture or intermediate components. Similarly, any two components so associated can also be considered “operably connected” or “operably coupled” to each other to achieve the desired function, and any two components that can be so associated can also be considered “operably coupled” to each other to achieve the desired function. Specific examples of operational coupling include, but are not limited to, physically pairable and / or physically interacting components and / or wirelessly interactive components and / or logically interacting and / or logically interactive components.

[0058] Furthermore, regarding the use of virtually any plural and / or singular terms in this document, those skilled in the art can convert from plural to singular and / or from singular to plural depending on the context and / or application. For clarity, various singular / plural substitutions may be explicitly described herein.

[0059] Furthermore, those skilled in the art will understand that the terms generally used herein, particularly those used in the appended claims, such as the body of the appended claims, are generally intended as “open-ended” terms. For example, the term “comprising” should be interpreted as “including but not limited to,” the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” and so on. Those skilled in the art will further understand that if a specific number of introduced claim elements are intended, such intent will be explicitly stated in the claim, and in the absence of such a statement, such intent does not exist. For example, to aid understanding, the appended claims may contain the use of the introductory phrases “at least one” and “one or more” to introduce claim elements. However, the use of such phrases should not be construed as implying that the claim element introduced by the indefinite article “a” or “an” limits any particular claim containing such an introduced claim element to containing only one such element, even when the same claim contains the introductory phrase “one or more” or “at least one” and the indefinite article such as “a” or “an,” for example, “a” and / or “an” should be interpreted as referring to “at least one” or “one or more,” and the same applies to the use of definite articles used to introduce claim elements. Furthermore, even when a specific number of the introduced claim elements are explicitly stated, those skilled in the art will recognize that such a statement should be interpreted as meaning at least the number listed. For example, the statement "two elements" without other modifiers means at least two elements or two or more elements. Additionally, in the use of phrases like "at least one of A, B, and C," for its purpose, such a structure is generally understood by those skilled in the art to be conventional. For example, "the system has at least one of A, B, and C" will include, but is not limited to, the system having a single A, a single B, a single C, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. Similarly, in the use of phrases like "at least one of A, B, or C," for its purpose, such a structure is generally understood by those skilled in the art to be conventional. For example, "the system has at least one of A, B, or C" will include, but is not limited to, the system having a single A, a single B, a single C, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. Those skilled in the art will further understand that any disjunctive words and / or phrases that actually represent two or more options, whether in the specification, claims, or drawings, should be understood to include the possibility of including one of a plurality of terms, any one of a plurality of terms, or two terms. For example, the phrase “A or B” will be understood to include the possibility of including “A” or “B” or “A and B”.

[0060] As can be seen from the foregoing, it is understood that various embodiments of this application have been described herein for illustrative purposes, and various modifications may be made without departing from the scope and spirit of this application. Therefore, the various embodiments disclosed herein are not intended to be limiting, and the true scope and spirit are determined by the appended claims.

Claims

1. A radio frequency front-end circuit device for facilitating wireless communication in dual-band dual-concurrent DBDC applications and multiple-input multiple-output (MIMO) applications, characterized in that, include: Front-end circuitry, used to support transmission in both the first and second frequency bands. include: The front-end circuit includes a first duplexer, a second duplexer, a third duplexer, multiple RF ports, and a frequency divider. The plurality of RF ports include: The first Wi-Fi 5GHz ~ 6GHz band RF port and the second Wi-Fi 5GHz ~ 6GHz band RF port at 5180 ~ 7115MHz; One of the first Wi-Fi 5GHz~6GHz band RF ports and the second Wi-Fi 5GHz~6GHz band RF port is connected to the input / output port of the frequency divider, wherein the frequency divider is used to divide the Wi-Fi 5GHz~6GHz operating frequency band. The first output / input port of the frequency divider is coupled to a first duplexer, which is coupled to a first antenna. The second output / input port of the frequency divider is coupled to a second duplexer, which is coupled to a second antenna. The other of the first Wi-Fi 5GHz ~ 6GHz band RF port and the second Wi-Fi 5GHz ~ 6GHz band RF port is coupled to a third duplexer; the third duplexer is coupled to a third antenna.

2. The device according to claim 1, characterized in that, The first frequency band is a frequency band in the range of 5180~5905MHz, and the second frequency band is a frequency band in the range of 5955~7115MHz.

3. The device as described in claim 1, characterized in that, The plurality of RF ports includes five RF ports, the five RF ports including: One Bluetooth RF port; The first Wi-Fi G-band RF port and the second Wi-Fi G-band RF port at 2412 ~ 2484MHz; and The first Wi-Fi 5GHz ~ 6GHz band RF port and the second Wi-Fi 5GHz ~ 6GHz band RF port are located at 5180 ~ 7115MHz.

4. The device as described in claim 3, characterized in that, The order of the physical locations of the five RF ports from one side of the front-end circuit to the opposite side of the front-end circuit includes: The device includes a Bluetooth RF port, a first Wi-Fi 5GHz~6GHz band RF port, a first Wi-Fi G-band RF port, a second Wi-Fi 5GHz~6GHz band RF port, and a second Wi-Fi G-band RF port. The positions of the first Wi-Fi 5GHz~6GHz band RF port and the second Wi-Fi 5GHz~6GHz band RF port are interchangeable. The position of the Bluetooth RF port is interchangeable with the position of either the first Wi-Fi G-band RF port or the second Wi-Fi G-band RF port.

5. The device according to claim 4, characterized in that, In DBDC applications, For the first type of DBDC, the first antenna is used for the first frequency band of one of the first and second Wi-Fi 5GHz~6GHz RF ports, and the third antenna is used for the second frequency band of the other of the first and second Wi-Fi 5GHz~6GHz RF ports. For the second type of DBDC, the third antenna is used for the first band of another Wi-Fi 5GHz~6GHz RF port, and the second antenna is used for the second band of a Wi-Fi 5GHz~6GHz RF port. The RF port of the Wi-Fi 5GHz~6GHz band is coupled to the frequency divider; as well as In the MIMO application, the first and third antennas are used for Wi-Fi 2.4GHz MIMO, the second and third antennas are used for high-frequency band MIMO in the range of 5955~7115MHz, and the first and third antennas are used for low-frequency band MIMO in the range of 5180~5905MHz.

6. The device according to claim 5, characterized in that, The first Wi-Fi 5GHz~6GHz frequency band RF port is coupled to the input / output port of the frequency divider. The first output / input port of the frequency divider transmits the first frequency band and is coupled to the first duplexer. The second output / input port of the frequency divider transmits the second frequency band and is coupled to the second duplexer. The second Wi-Fi 5GHz~6GHz band RF port is coupled to the third duplexer; The first Wi-Fi G-band RF port is coupled to the second duplexer; The second Wi-Fi G-band RF port is coupled to the third duplexer.

7. The device as described in claim 4, characterized in that, The front-end circuit includes a first antenna, a second antenna, and a third antenna, wherein: In the DBDC application, For the first type of DBDC, the first antenna is used for the first frequency band of one of the first Wi-Fi 5GHz~6GHz frequency band RF ports and the second Wi-Fi 5GHz~6GHz frequency band RF ports, and the third antenna is used for the second frequency band of the other Wi-Fi 5GHz~6GHz frequency band RF port. For the second type of DBDC, the second antenna is used for the second band of a Wi-Fi 5GHz~6GHz RF port, and the third antenna is used for the first band of another Wi-Fi 5GHz~6GHz RF port, wherein the Wi-Fi 5GHz~6GHz RF port is coupled to the frequency divider; and In the MIMO application, the first antenna and the third antenna are used for Wi-Fi 2.4GHz MIMO, the second antenna and the third antenna are used for high-frequency band MIMO in the range of 5955~7115MHz, and the first antenna and the third antenna are used for low-frequency band MIMO in the range of 5180~5905MHz.

8. The device as described in claim 7, characterized in that, The first Wi-Fi 5GHz~6GHz frequency band RF port is coupled to the input / output port of the frequency divider, the second output / input port of the frequency divider transmitting the second frequency band is coupled to the second duplexer, and the first output / input port of the frequency divider transmitting the first frequency band is coupled to the first duplexer. The first Wi-Fi G-band RF port is coupled to the first duplexer; The second Wi-Fi G-band RF port is coupled to the third duplexer; The second Wi-Fi 5GHz~6GHz band RF port is coupled to the third duplexer.

9. The device as described in claim 4, characterized in that, The front-end circuit includes a first antenna, a second antenna, and a third antenna, wherein: In the DBDC application, For the first type of DBDC, the third antenna is used in the first frequency band of the first Wi-Fi 5GHz~6GHz band RF port and the second Wi-Fi 5GHz~6GHz band RF port, and the first antenna is used in the second frequency band of the first Wi-Fi 5GHz~6GHz band RF port and the second Wi-Fi 5GHz~6GHz band RF port. For the second type of DBDC, the second antenna is used for the first frequency band of a Wi-Fi 5GHz~6GHz frequency band port, and the third antenna is used for the second frequency band of another Wi-Fi 5GHz~6GHz frequency band port; Wherein, the Wi-Fi 5GHz~6GHz band RF port is coupled to the frequency divider; and In the MIMO application, the first antenna and the second antenna are used for Wi-Fi 2.4GHz MIMO, the first antenna and the third antenna are used for high-frequency band MIMO in the range of 5955~7115MHz, and the second antenna and the third antenna are used for low-frequency band MIMO in the range of 5180~5905MHz.

10. The device as claimed in claim 9, characterized in that, The second Wi-Fi 5GHz~6GHz frequency band RF port is coupled to the input / output port of the frequency divider, the first output / input port of the frequency divider transmitting the second frequency band is coupled to the first duplexer, and the second output / input port of the frequency divider transmitting the first frequency band is coupled to the second duplexer; The second Wi-Fi G-band RF port is coupled to the second duplexer; The first Wi-Fi G-band RF port is coupled to the first duplexer; The first Wi-Fi 5GHz~6GHz band RF port is coupled to the third duplexer.

11. A radio frequency front-end circuit device for facilitating wireless communication in DBDC and MIMO applications, wherein, include: The front-end circuit includes a first duplexer, a second duplexer, multiple RF ports, and a frequency divider. The plurality of RF ports include: The first Wi-Fi 5GHz ~ 6GHz band RF port and the second Wi-Fi 5GHz ~ 6GHz band RF port at 5180 ~ 7115MHz; One of the first Wi-Fi 5GHz~6GHz band RF ports and the second Wi-Fi 5GHz~6GHz band RF port is connected to the input / output port of the frequency divider, wherein the frequency divider is used to divide the Wi-Fi 5GHz~6GHz operating frequency band. The first output / input port of the frequency divider is coupled to a first duplexer, the first duplexer is coupled to a first antenna, and the second output / input port of the frequency divider is coupled to a second antenna via a filter. The other of the first Wi-Fi 5GHz ~ 6GHz band RF port and the second Wi-Fi 5GHz ~ 6GHz band RF port is coupled to a second duplexer; the second duplexer is coupled to a third antenna.

12. The device according to claim 11, characterized in that, The plurality of RF ports includes four RF ports. The four RF ports include: The first Wi-Fi G-band RF port and the second Wi-Fi G-band RF port at 2412 ~ 2484MHz, and The first Wi-Fi 5GHz ~ 6GHz band RF port and the second Wi-Fi 5GHz ~ 6GHz band RF port at 5180 ~ 7115MHz.

13. The device according to claim 12, characterized in that, The order of the physical locations of the four RF ports from one side of the front-end circuit to the opposite side of the front-end circuit includes: a first Wi-Fi G-band RF port, a first Wi-Fi 5GHz~6GHz band RF port, a second Wi-Fi G-band RF port, and a second Wi-Fi 5GHz~6GHz band RF port, wherein the positions of the first Wi-Fi 5GHz~6GHz band RF port and the second Wi-Fi 5GHz~6GHz band RF port are interchangeable.

14. The device according to claim 13, characterized in that, The front-end circuit includes a first antenna, a second antenna, and a third antenna, wherein: In the DBDC application, For the first type of DBDC, the third antenna is used in the first frequency band of the first Wi-Fi 5GHz~6GHz band RF port and the second Wi-Fi 5GHz~6GHz band RF port, and the first antenna is used in the second frequency band of the first Wi-Fi 5GHz~6GHz band RF port and the second Wi-Fi 5GHz~6GHz band RF port. For the second type of DBDC, the second antenna is coupled to the frequency divider via a filter for the first frequency band of the RF port of the Wi-Fi 5GHz~6GHz band, and the third antenna is used for the second frequency band of the port of the other Wi-Fi 5GHz~6GHz band; Wherein, the Wi-Fi 5GHz~6GHz band RF port is coupled to the frequency divider; and In the MIMO application, the first and third antennas are used for Wi-Fi 2.4GHz MIMO, the first and third antennas are used for high-frequency band MIMO in the range of 5955~7115MHz, and the second and third antennas are used for low-frequency band MIMO in the range of 5180~5905MHz.

15. The device according to claim 13, characterized in that, The front-end circuit includes a first antenna, a second antenna, and a third antenna, wherein: In the DBDC application, For the first type of DBDC, the first antenna is used for the first frequency band of one of the first Wi-Fi 5GHz~6GHz band RF ports and the second Wi-Fi 5GHz~6GHz band RF ports, and the third antenna is used for the second frequency band of the other Wi-Fi 5GHz~6GHz band RF port. For the second type of DBDC, the second antenna is used for the second band of a Wi-Fi 5GHz~6GHz RF port, and the third antenna is used for the first band of another Wi-Fi 5GHz~6GHz port; Wherein, the RF port of the Wi-Fi 5GHz~6GHz band is coupled to the frequency divider, and the second antenna is coupled to the frequency divider via a filter, and In the MIMO application, the first and third antennas are used for Wi-Fi 2.4GHz MIMO, the second and third antennas are used for high-frequency band MIMO in the range of 5955~7115MHz, and the first and third antennas are used for low-frequency band MIMO in the range of 5180~5905MHz.

16. A radio frequency front-end circuit device for facilitating wireless communication in DBDC and MIMO applications. include: The front-end circuit is configured with three antennas, a first duplexer, a second duplexer, a third duplexer, a double-pole double-throw (DPDT) switch, multiple RF ports, and a frequency divider. The plurality of RF ports include: The first Wi-Fi 5GHz ~ 6GHz band RF port and the second Wi-Fi 5GHz ~ 6GHz band RF port at 5180 ~ 7115MHz; One of the first Wi-Fi 5GHz~6GHz band RF ports and the second Wi-Fi 5GHz~6GHz band RF port is connected to the input / output port of the frequency divider, wherein the frequency divider is used to divide the Wi-Fi 5GHz~6GHz operating frequency band. The first output / input port of the frequency divider is coupled to a first duplexer, the first duplexer is coupled to a first antenna, and the second output / input port of the frequency divider is coupled to the first input / output port of the DPDT. The other of the first Wi-Fi 5GHz ~ 6GHz band RF port and the second Wi-Fi 5GHz ~ 6GHz band RF port is coupled to the second input / output port of the DPDT; The first output / input port and the second output / input port of the DPDT are respectively coupled to the second duplexer and the third duplexer. The second duplexer is coupled to the second antenna, and the third duplexer is coupled to the third antenna.

17. The device according to claim 16, characterized in that, The plurality of RF ports includes: five RF ports, including one Bluetooth RF port; a first Wi-Fi G-band RF port and a second Wi-Fi G-band RF port at 2412 ~ 2484 MHz; and a first Wi-Fi 5GHz ~ 6GHz band RF port and a second Wi-Fi 5GHz ~ 6GHz band RF port at 5180 ~ 7115 MHz. The physical positions of the five RF ports, from one side of the front-end circuit to the opposite side, are in the following order: a Bluetooth RF port, a first Wi-Fi 5GHz ~ 6GHz band RF port, a first Wi-Fi G-band RF port, a second Wi-Fi 5GHz ~ 6GHz band RF port, and a second Wi-Fi G-band RF port. The positions of the first Wi-Fi 5GHz ~ 6GHz band RF port and the second Wi-Fi 5GHz ~ 6GHz band RF port are interchangeable. The position of the Bluetooth RF port is interchangeable with either the first Wi-Fi G-band RF port or the second Wi-Fi G-band RF port. The positions of the G-band RF ports can be interchanged.

18. The device according to claim 17, characterized in that, The front-end circuit includes a first antenna, a second antenna, and a third antenna, wherein: In the DBDC application, the first antenna is used for a first frequency band of one of the first Wi-Fi 5GHz ~ 6GHz band RF ports and the second Wi-Fi 5GHz ~ 6GHz band RF ports, and the second antenna is coupled to another Wi-Fi 5GHz ~ 6GHz band port of the other Wi-Fi 5GHz ~ 6GHz band port via the DPDT switch, for the second frequency band of the other Wi-Fi 5GHz ~ 6GHz band port; The Wi-Fi 5GHz~6GHz band RF port is coupled to the frequency divider, and In the MIMO application, the first and second antennas are used for Wi-Fi 2.4GHz MIMO, the second and third antennas are used for high-frequency band MIMO in the range of 5955~7115MHz, and the first and third antennas are used for low-frequency band MIMO in the range of 5180~5905MHz.

19. The device according to claim 17, characterized in that, The front-end circuit includes a first antenna, a second antenna, and a third antenna, wherein: In the DBDC application, the first antenna is used for the second band of one of the first Wi-Fi 5GHz ~ 6GHz band RF ports and the second Wi-Fi 5GHz ~ 6GHz band RF ports, and the third antenna is coupled to the other Wi-Fi 5GHz ~ 6GHz band port of the first Wi-Fi 5GHz ~ 6GHz band RF port and the second Wi-Fi 5GHz ~ 6GHz band RF port via the DPDT switch, for the first band of the other Wi-Fi 5GHz ~ 6GHz band port; The Wi-Fi 5GHz~6GHz band RF port is coupled to the frequency divider, and In the MIMO application, the third and second antennas are used for Wi-Fi 2.4GHz MIMO, the second and first antennas are used for high-frequency band MIMO in the range of 5955~7115MHz, and the third and second antennas are used for low-frequency band MIMO in the range of 5180~5905MHz.

20. The device according to claim 17, characterized in that, The front-end circuit includes a first antenna, a second antenna, and a third antenna, wherein: In the DBDC application, the first antenna is used for a first frequency band of one of the first Wi-Fi 5GHz~6GHz band RF ports and the second Wi-Fi 5GHz~6GHz band RF ports, and the third antenna is coupled to another Wi-Fi 5GHz~6GHz band port of the first Wi-Fi 5GHz~6GHz band RF port and the second Wi-Fi 5GHz~6GHz band RF port via the DPDT switch, for a second frequency band of the other Wi-Fi 5GHz~6GHz band port; wherein, the Wi-Fi 5GHz~6GHz band RF port is coupled to a frequency divider; as well as In the MIMO application, the third and second antennas are used for Wi-Fi 2.4GHz MIMO, the third and second antennas are used for high-frequency band MIMO in the range of 5955~7115MHz, and the second and first antennas are used for low-frequency band MIMO in the range of 5180~5905MHz.

21. The device according to claim 20, characterized in that, The first Wi-Fi 5GHz~6GHz frequency band RF port is coupled to the first input / output port of the frequency divider, the first output / input port of the frequency divider transmitting the first frequency band is coupled to the first duplexer, and the second output / input port of the frequency divider transmitting the second frequency band is coupled to the first input / output port of the DPDT; The second Wi-Fi 5GHz~6GHz band RF port is coupled to the second input / output port of the DPDT; The first output / input port of the DPDT transmits the second frequency band and is coupled to the second duplexer; the second output / input port of the DPDT transmits the frequency band in the second Wi-Fi 5GHz~6GHz frequency band and is coupled to the third duplexer; The first Wi-Fi G-band RF port is coupled to the second duplexer; The second Wi-Fi G-band RF port is coupled to the third duplexer.

22. The device according to claim 17, characterized in that, The front-end circuit includes a first antenna, a second antenna, and a third antenna, wherein: In the DBDC application, the second antenna is coupled via the DPDT switch to another Wi-Fi 5GHz~6GHz band port, one of the first Wi-Fi 5GHz~6GHz band RF ports and the other Wi-Fi 5GHz~6GHz band RF port, for the first band of the other Wi-Fi 5GHz~6GHz band port, and the first antenna is used for the second band of the first Wi-Fi 5GHz~6GHz band RF port and the other Wi-Fi 5GHz~6GHz band RF port; wherein the Wi-Fi 5GHz~6GHz band RF port is coupled to a frequency divider; and In the MIMO application, the first and second antennas are used for Wi-Fi 2.4GHz MIMO, the first and third antennas are used for high-frequency band MIMO in the range of 5955~7115MHz, and the second and third antennas are used for low-frequency band MIMO in the range of 5180~5905MHz.

23. A radio frequency front-end circuit device for facilitating wireless communication in DBDC and MIMO applications, wherein, include: The front-end circuit includes a first duplexer, a second duplexer, multiple RF ports, a frequency divider, and a DPDT switch. The plurality of RF ports include: The first Wi-Fi 5GHz ~ 6GHz band RF port and the second Wi-Fi 5GHz ~ 6GHz band RF port are located at 5180 ~ 7115MHz. One of the first Wi-Fi 5GHz~6GHz band RF ports and the second Wi-Fi 5GHz~6GHz band RF port is connected to the input / output port of the frequency divider, wherein the frequency divider is used to divide the Wi-Fi 5GHz~6GHz operating frequency band. The first output / input port of the frequency divider is coupled to a first duplexer, the first duplexer is coupled to a first antenna, and the second output / input port of the frequency divider is coupled to the first input / output port of the DPDT. The other of the first Wi-Fi 5GHz ~ 6GHz band RF port and the second Wi-Fi 5GHz ~ 6GHz band RF port is coupled to the second input / output port of the DPDT; One of the first output / input ports and the second output / input port of the DPDT is coupled to a second duplexer, and the second duplexer is coupled to a second antenna; the other of the first output / input port and the second output / input port of the DPDT is coupled to a third antenna.

24. The device according to claim 23, characterized in that, The plurality of RF ports includes four RF ports: a first Wi-Fi G-band RF port and a second Wi-Fi G-band RF port at 2412 ~ 2484MHz; and a first Wi-Fi 5GHz ~ 6GHz band RF port and a second Wi-Fi 5GHz ~ 6GHz band RF port at 5180 ~ 7115MHz. The order of the physical locations of the four RF ports from one side of the front-end circuit to the opposite side of the front-end circuit includes: the first Wi-Fi G-band RF port, the first Wi-Fi 5GHz ~ 6GHz band RF port, the second Wi-Fi G-band RF port, and the second Wi-Fi 5GHz ~ 6GHz band RF port, wherein the positions of the first Wi-Fi 5GHz ~ 6GHz band RF port and the second Wi-Fi 5GHz ~ 6GHz band RF port are interchangeable.

25. The device according to claim 24, characterized in that, The front-end circuit includes a first antenna, a second antenna, and a third antenna, wherein: In the DBDC application, the first antenna is used for a first frequency band of one of the first Wi-Fi 5GHz ~ 6GHz band RF ports and the second Wi-Fi 5GHz ~ 6GHz band RF ports, and the third antenna is coupled to the other Wi-Fi 5GHz ~ 6GHz band RF port via the DPDT switch for the second frequency band of the other Wi-Fi 5GHz ~ 6GHz band RF port; The Wi-Fi 5GHz~6GHz band RF port is coupled to the frequency divider, and In the MIMO application, the second and third antennas are used for Wi-Fi 2.4GHz MIMO, the third and second antennas are used for high-frequency band MIMO in the range of 5955~7115MHz, and the second and first antennas are used for low-frequency band MIMO in the range of 5180~5905MHz.

26. The device according to claim 25, characterized in that, The first Wi-Fi 5GHz~6GHz frequency band RF port is coupled to the input / output port of the frequency divider, the first output / input port of the frequency divider transmitting the first frequency band is coupled to the first duplexer, and the second output / input port of the frequency divider transmitting the second frequency band is coupled to the first input / output port of the DPDT; The second Wi-Fi 5GHz~6GHz band RF port is coupled to the second input / output port of the DPDT; The first output / input port of the DPDT transmits the second frequency band and is coupled to the second duplexer; the second output / input port of the DPDT transmits the frequency band in the second Wi-Fi 5GHz~6GHz frequency band and is coupled to the third antenna; The first Wi-Fi G-band RF port is coupled to the first duplexer; The second Wi-Fi G-band RF port is coupled to the second duplexer.

27. The device according to claim 24, characterized in that, The front-end circuit includes a first antenna, a second antenna, and a third antenna, wherein: In the DBDC application, the second antenna is coupled via the DPDT switch to another Wi-Fi 5GHz ~ 6GHz band RF port, one of the first Wi-Fi 5GHz ~ 6GHz band RF ports and the other Wi-Fi 5GHz ~ 6GHz band RF port, for the first band of the other Wi-Fi 5GHz ~ 6GHz band RF port, and the first antenna is used for the second band of the first Wi-Fi 5GHz ~ 6GHz band RF port and the other Wi-Fi 5GHz ~ 6GHz band RF port. The Wi-Fi 5GHz~6GHz band RF port is coupled to the frequency divider, and In the MIMO application, the first and second antennas are used for Wi-Fi 2.4GHz MIMO, the first and third antennas are used for high-frequency band MIMO in the range of 5955~7115MHz, and the second and third antennas are used for low-frequency band MIMO in the range of 5180~5905MHz.

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