Global satellite navigation system level package chip, receiver and electronic device

Abstract

The utility model provides a kind of system-level package chip of global satellite navigation, receiver and electronic equipment, can be reused in single antenna full-frequency positioning scene and double antenna three-frequency positioning directional scene, at least package has power module, clock module, GNSS receiver module, storage module and radio frequency front end module in chip, and peripheral interface is provided on chip;Power module is connected with clock module, GNSS receiver module and storage module respectively;Clock module is connected with GNSS receiver module;The input end of radio frequency front end module is connected with external single antenna or double antenna, and the output end of radio frequency front end module is connected with GNSS receiver module;GNSS receiver module is connected with storage module and peripheral interface.The utility model provides system-level package chip high integration, can satisfy the requirement of equipment to miniaturization.

Description

Technical Field

[0001] This utility model relates to the field of satellite navigation, and in particular to a system-in-package chip, receiver and electronic device for global satellite navigation. Background Technology

[0002] Traditional GNSS (Global Navigation Satellite System) modules typically consist of radio frequency (RF) devices, power supply devices, clock devices, and a GNSS receiver chip. These components are usually individually packaged and interconnected via resistors, capacitors, and inductors. This results in a relatively large overall size, posing a significant challenge when applying them to space-constrained miniaturized devices and failing to meet the miniaturization requirements of various terminal products. Summary of the Invention

[0003] Based on the above situation, the main purpose of this utility model is to provide a system-in-package chip, receiver and electronic device for global satellite navigation. The system-in-package chip has a high degree of integration and can meet the requirements of miniaturization of the device.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] This utility model embodiment provides a system-in-package chip for global satellite navigation, which can be reused in single-antenna full-frequency positioning scenarios and dual-antenna tri-frequency positioning and orientation scenarios. The chip encapsulates at least a power module, a clock module, a GNSS receiver module, a storage module, and an RF front-end module, and is provided with peripheral interfaces.

[0006] The power supply module is connected to the clock module, GNSS receiver module, and storage module, respectively, and converts the input voltage into the operating voltage for the clock module, GNSS receiver module, and storage module. The clock module is connected to the GNSS receiver module and provides a clock signal to the GNSS receiver module. The input terminal of the RF front-end module is connected to an external single or dual antenna, and the output terminal of the RF front-end module is connected to the GNSS receiver module. The GNSS receiver module interacts with the storage module and is connected to the peripheral interface.

[0007] Furthermore, the RF front-end module includes a tripeller and RF input ports. The RF input ports include a first RF input port, a second RF input port, a third RF input port, and a fourth RF input port. The input terminal of the tripeller is connected to the first RF input port. The first and second output terminals of the tripeller are connected to two receiving channels of the GNSS receiver module. The third output terminal of the tripeller is connected to the second RF input port. The third and fourth RF input ports are connected to the other two receiving channels of the GNSS receiver module.

[0008] Furthermore, each of the power module, clock module, GNSS receiver module, storage module, and tripod is a separate, unpackaged die or finished module; or,

[0009] At least one of the power module, clock module, GNSS receiver module, storage module, and tripod is a separate unpackaged die, and at least one is a finished module.

[0010] Furthermore, the first RF input port, the second RF input port, and the third RF input port are used in single-antenna full-frequency positioning scenarios, and the first RF input port, the third RF input port, and the fourth RF input port are used in dual-antenna tri-frequency positioning and orientation scenarios.

[0011] Furthermore, when the chip is used in a single-antenna full-frequency positioning scenario, the first RF input port is externally connected to a single antenna, and the second RF input port is externally connected to the third RF input port, so that the RF signal received by the single antenna is separated into three signals by the tripeller and then input into the three receiving channels of the GNSS receiver module respectively.

[0012] Furthermore, the frequency bands of the three signals are 1559.052MHz~1605.886MHz, 1237.830MHz~1283.865MHz and 1166.220MHz~1237.830MHz.

[0013] Furthermore, in the dual-antenna tri-frequency positioning and orientation scenario, the first RF input port is externally connected to the first antenna, and the third and fourth RF input ports are externally connected to the second antenna via a duplexer. This allows the RF signal received by the first antenna to be separated into three signals by the duplexer, with two of these signals being input to the two receiving channels of the GNSS receiver module, and the RF signal received by the second antenna to be separated into two signals by the duplexer and input to the other two receiving channels of the GNSS receiver module.

[0014] Furthermore, the frequency bands of the two signals input to the GNSS receiver module through the tripeller are 1559.052MHz~1605.886MHz and 1237.830MHz~1283.865MHz; the frequency bands of the two signals input to the GNSS receiver module through the duplexer are 1559.052MHz~1605.886MHz and 1237.830MHz~1283.865MHz.

[0015] Furthermore, the GNSS receiver module includes a radio frequency subsystem, a baseband subsystem, and an application processor subsystem connected in sequence.

[0016] Furthermore, the radio frequency subsystem includes a first receiving channel, a second receiving channel, a third receiving channel, and a fourth receiving channel. The first and second receiving channels are connected to the two output terminals of the tripod, the third receiving channel is connected to the third radio frequency input port, and the fourth receiving channel is connected to the fourth radio frequency input port.

[0017] Furthermore, the application processor subsystem is connected to the peripheral interface, which includes one or more of the following: CAN interface, Ethernet interface, eMMC interface, UART interface, SPI interface, I2C interface, time synchronization signal interface, and GPIO interface.

[0018] This utility model embodiment also provides a receiver for a satellite navigation system, including a single antenna and the aforementioned global satellite navigation system-in-package chip, wherein the single antenna is connected to the first input port of the system-in-package chip, and the second radio frequency input port and the third radio frequency input port are connected externally to the chip.

[0019] This utility model embodiment also provides a receiver for a satellite navigation system, including a first antenna, a second antenna, a duplexer, and the aforementioned global satellite navigation system-in-package chip. The first antenna is connected to the first radio frequency input port of the system-in-package chip, the second antenna is connected to the input terminal of the duplexer, and the two output terminals of the duplexer are respectively connected to the third input port and the fourth input port.

[0020] This utility model embodiment also provides an electronic device, including the receiver of the above-described satellite navigation system.

[0021] Based on the frequency band occupancy characteristics of existing satellite navigation signals, this utility model integrates a power module, clock module, GNSS receiver module, storage module, and RF front-end module into a single chip. This chip can achieve all the application functions of traditional module products while greatly reducing the chip size. It can be applied to miniaturized devices with high space requirements, thus meeting the miniaturization requirements of various terminal products.

[0022] Other beneficial effects of this utility model will be explained in detail through the introduction of specific technical features and technical solutions in the specific embodiments. Those skilled in the art should be able to understand the beneficial technical effects brought about by the technical features and technical solutions through the introduction of these technical features and technical solutions. Attached Figure Description

[0023] The preferred embodiments of the present invention will now be described with reference to the accompanying drawings.

[0024] Figure 1 This is one of the structural schematic diagrams of a system-in-package chip for global satellite navigation according to a preferred embodiment of the present invention;

[0025] Figure 2 This is a second schematic diagram of the structure of a system-in-package chip for global satellite navigation, representing a preferred embodiment of the present invention.

[0026] Figure 3 This is one of the structural schematic diagrams of a receiver according to a preferred embodiment of the present invention;

[0027] Figure 4 This is a second schematic diagram of the receiver according to a preferred embodiment of the present invention;

[0028] Figure 5 This is the third schematic diagram of the receiver according to a preferred embodiment of the present invention.

[0029] In the picture:

[0030] 1. Power supply module; 2. Clock module; 3. GNSS receiver module; 31. RF subsystem; 32. Baseband subsystem; 33. Application processor subsystem; 4. Storage module; 5. RF front-end module; 50. Triplexer; 51. First RF input port; 52. Second RF input port; 53. Third RF input port; 54. Fourth RF input port; 6. Peripheral interface;

[0031] 10. Single antenna; 20. First antenna; 30. Second antenna; 40. Duplexer; 60. RF switching switch. Detailed Implementation

[0032] The present invention will now be described based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail, but well-known methods, processes, procedures, and elements are not described in detail in order to avoid obscuring the essence of the present invention.

[0033] Furthermore, those skilled in the art should understand that the accompanying drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0034] Unless the context explicitly requires it, the words "comprising," "including," and similar terms throughout the specification and claims should be interpreted as encompassing rather than being exclusive or exhaustive; that is, meaning "including but not limited to."

[0035] In the description of this utility model, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0036] Satellite navigation systems provide global users with all-weather, all-time, high-precision positioning, navigation, and timing services. Currently, the field of satellite navigation mainly encompasses four global navigation satellite systems (GNSS), two regional satellite navigation systems, and multiple satellite-based augmentation systems (SBAS).

[0037] The four global navigation satellite systems include BeiDou Navigation Satellite System, GPS (Global Positioning System), GLONASS (Global Navigation Satellite System), and Galileo, collectively known as GNSS. The two regional satellite navigation systems are Japan's Quasi-Zenith Satellite System (QZSS) and India's Indian Regional Navigation Satellite System (IRNSS; also known as NAVIC).

[0038] Four global satellite navigation systems, two regional satellite navigation systems, and multiple satellite-based augmentation systems together form today's multi-system, multi-frequency, and ubiquitous satellite navigation network. However, such a large number of satellite navigation signals presents enormous challenges to receiver design.

[0039] Current common GNSS solutions adopt a discrete design, with receiver chips and RF front-end devices packaged independently. The integration level is low, and both single-antenna and dual-antenna architectures require a large design area, making it difficult to meet the miniaturization requirements of the equipment.

[0040] Therefore, based on existing satellite navigation signals and mature chip system-in-package (SoC) technology, it is necessary to develop a new system-in-package (SoC) chip that can meet the needs of single-antenna and dual-antenna products with a single chip. When used in single-antenna full-frequency positioning scenarios, no additional external components are required. When used in dual-antenna tri-frequency positioning and orientation scenarios, only a small number of external components are needed. This can greatly reduce the product design area and promote further miniaturization of the product.

[0041] The specific structure of the system-in-package chip for global satellite navigation of this utility model will be described in detail below with reference to the accompanying drawings.

[0042] like Figure 1 As shown, this system-in-package chip can be used in single-antenna full-frequency positioning scenarios and dual-antenna tri-frequency positioning and orientation scenarios. The chip contains at least a power module 1, a clock module 2, a GNSS receiver module 3, a storage module 4, and an RF front-end module 5. The chip is equipped with a peripheral interface 6.

[0043] The power supply module 1 is connected to the clock module 2, the GNSS receiver module 3, and the storage module 4, respectively. The power supply module 1 converts the input voltage into the operating voltage for the clock module 2, the GNSS receiver module 3, and the storage module 4. The clock module 2 is connected to the GNSS receiver module 3, providing it with a clock signal. The input of the RF front-end module 5 is connected to an external single or dual antenna, and its output is connected to the GNSS receiver module 3. The RF front-end module 5 inputs the frequency-band separated RF signal into the GNSS receiver module 3, which processes the RF signal to obtain a baseband signal containing navigation data, thereby enabling functions such as pseudorange measurement, positioning calculation, and time synchronization.

[0044] GNSS receiver module 3 interacts with storage module 4. For example, GNSS receiver module 3 writes raw signals, intermediate results, and status during the positioning process into storage module 4 to support real-time calculation and post-analysis; GNSS receiver module 3 can also read initialization data, configuration parameters, and historical information from storage module 4 to optimize positioning efficiency and reliability.

[0045] The GNSS receiver module 3 is also connected to a peripheral interface 6. Specifically, the peripheral interface 6 may include a communication interface, a function control interface, and an expansion interface. The communication interface enables data sharing and multi-device collaboration; the function control interface adapts to the needs of different scenarios; and the expansion interface ensures compatibility with global navigation networks. The standardized design of these interfaces not only reduces terminal development costs but also, through deep integration with external devices, promotes the upgrade of GNSS technology from single positioning to spatiotemporal information fusion, supporting application innovations in fields such as intelligent driving, precision agriculture, and the Internet of Things.

[0046] This utility model provides a system-in-package (SIP) chip for global satellite navigation that integrates a power module 1, a clock module 2, a GNSS receiver module 3, a storage module 4, and an RF front-end module 5 into a single chip. This allows for the realization of all the application functions of traditional module products while significantly reducing product size. The final chip size can be as small as 7.4mm*7.4mm, while traditional GNSS modules typically have sizes of 16mm*12mm, 16mm*21mm, and 17mm*22mm. When in use, only a small number of external resistors, capacitors, and other components are needed; the chip operates normally after being powered on. A single chip can achieve all the functions of a traditional GNSS module product, which is beneficial for integrating high-precision GNSS full-system positioning functions into professional-grade products such as drones, robots, and intelligent driving terminals.

[0047] The advantages of this system-on-a-chip's miniaturized design extend across multiple dimensions, including hardware integration, power consumption control, and cost optimization. In terms of hardware integration, the chip can be directly embedded into a compact circuit board, saving terminal space and freeing up room for other components, thus adapting to micro-devices. Regarding power consumption control, the miniaturized chip has a shorter electrical path, reducing signal transmission loss. Furthermore, the power module 1 within the chip can be configured to dynamically adjust power consumption based on the positioning scenario; for example, entering sleep mode when stationary and activating positioning when in motion to avoid wasting power. In terms of cost optimization, more 7.4mm*7.4mm chips can be cut from the same size wafer, improving wafer utilization and reducing the cost per chip. Additionally, the chip eliminates the need to purchase multiple discrete components, reducing supply chain management costs, and the smaller chip offers higher soldering yields, significantly improving assembly efficiency.

[0048] In the above embodiments, such as Figure 2As shown, the RF front-end module 5 includes a tripeller 50 and RF input ports, wherein the RF input ports include a first RF input port 51, a second RF input port 52, a third RF input port 53, and a fourth RF input port 54. The input terminal of the tripeller 50 is connected to the first RF input port 51, the first and second output terminals of the tripeller 50 are respectively connected to two receiving channels of the GNSS receiver module 3, and the third output terminal of the tripeller 50 is connected to the second RF input port 52; the third RF input port 53 and the fourth RF input port 54 are respectively connected to the other two receiving channels of the GNSS receiver module 3.

[0049] Specifically, the triplet 50 can be a Tri-Saw triplet. The Tri-Saw triplet utilizes the characteristics of SAW devices to achieve filtering and separation of signals at different frequencies by exciting and propagating surface acoustic waves on the surface of a piezoelectric material. It typically includes three SAW chips and some passive SMT (Surface Mount Technology) devices. Each SAW chip is designed to have good filtering performance for signals within a specific frequency range. Through reasonable layout and connection, the three filters of different frequencies are combined to form a triplet structure, thereby enabling the extraction of signals from three different frequency bands in the input signal separately, or the synthesis of three different frequency bands into a single output signal. The Tri-Saw triplet features high selectivity, high temperature stability, small size, and high power handling capability.

[0050] In a single-antenna full-frequency positioning scenario, the first RF input port 51, the second RF input port 52, and the third RF input port 53 can be used for receiving and relaying RF signals. In a dual-antenna tri-frequency positioning and orientation scenario, the first RF input port 51, the third RF input port 53, and the fourth RF input port 54 can be used, with the first RF input port 51 and the third RF input port 53 being reused. In other words, the first RF input port 51 and the third RF input port 53 can be reused in both single-antenna full-frequency and dual-antenna tri-frequency positioning and orientation scenarios. Of course, the second RF input port 52 and the fourth RF input port 54, or the first RF input port 51 and the second RF input port 52, can also be reused as needed.

[0051] The system-in-package (SoC) chip provided by this invention shares some ports in both single-antenna and dual-antenna scenarios, while also differentiating some ports. In single-antenna scenarios, it meets the low-cost requirements of consumer devices, while in dual-antenna scenarios, it retains high-precision positioning and orientation capabilities by reusing some ports, making it suitable for professional applications. A single chip can flexibly adapt to the needs of multiple scenarios, including consumer and professional applications.

[0052] Furthermore, in a single-antenna full-frequency positioning scenario, the first RF input port 51 is connected to the single antenna, the second RF input port 52 is connected to the third RF input port 53, and the tripeller separates the RF signal received by the single antenna into three signals and inputs them into the GNSS receiver module 3.

[0053] In other words, when using this chip in a single-antenna full-frequency positioning scenario, you only need to connect the single antenna to the first RF input port 51, and connect the second RF input port 52 and the third RF input port 53 together outside the chip to achieve the single-antenna full-frequency positioning function. The operation is simple and convenient.

[0054] Based on the characteristics of satellite navigation signals, the radio frequency signals received by a single antenna can be separated into the following three frequency bands: 1559.052MHz~1605.886MHz, 1237.830MHz~1283.865MHz, and 1166.220MHz~1237.830MHz, to achieve full frequency coverage.

[0055] Furthermore, in the dual-antenna tri-frequency positioning and orientation scenario, the first RF input port 51 is connected to the first antenna, and the triplet separates the RF signal received by the first antenna into two signals and inputs them into the GNSS receiver module 3; the third RF input port 53 and the fourth RF input port 54 are connected to the second antenna through a duplexer, and the duplexer separates the RF signal received by the second antenna into two signals and inputs them into the GNSS receiver module 3.

[0056] In other words, when this chip is used in a dual-antenna tri-frequency positioning and orientation scenario, only a duplexer needs to be set up outside the chip. The first antenna is connected to the first RF input port 51, and the second antenna is connected to the third RF input port 53 and the fourth RF input port 54 through the duplexer. This enables the single-antenna full-frequency positioning function, which is simple and convenient to operate.

[0057] Based on the characteristics of satellite navigation signals, the radio frequency signals received by the first and second antennas can be separated into the following two frequency bands: 1559.052MHz~1605.886MHz and 1237.830MHz~1283.865MHz, to achieve L1, L2 and L5 three-band coverage in the corresponding GNSS system, thereby realizing the three-frequency high-precision positioning and orientation function of the entire GNSS system.

[0058] The system-in-package chip provided by this utility model transforms professional positioning capabilities into a "foolproof" experience through highly integrated packaging. For users, there is no need to understand complex technologies such as RF port multiplexing and multi-frequency calculation; they can obtain centimeter-level high-precision positioning and accurate orientation data with just simple operation. For the industry, hardware integrated packaging significantly lowers the application threshold of high-precision positioning, promoting its penetration from professional markets such as surveying and aviation to consumer markets such as mobile phones and wearable devices, further expanding the application boundaries of the chip.

[0059] In some embodiments, each of the power module 1, clock module 2, GNSS receiver module 3, storage module 4, and tripeller 50 in the system-in-package chip provided by this utility model is a separate unpackaged die or a purchased finished module; or,

[0060] At least one of the following components—power module 1, clock module 2, GNSS receiver module 3, storage module 4, and tripeller—is a separate, unpackaged die, and at least one is a purchased finished module. All modules are integrated onto the same substrate using system-in-package (SIP) technology to form a system-in-package (SIP) structure.

[0061] In a specific embodiment, such as Figure 2 As shown, the GNSS receiver module 3 includes a radio frequency subsystem 31, a baseband subsystem 32, and an application processor subsystem 33 connected in sequence.

[0062] The radio frequency subsystem 31 down-converts the received radio frequency signal into an intermediate frequency analog signal and then outputs it, or down-converts the received radio frequency signal into an intermediate frequency analog signal and then converts the intermediate frequency analog signal into an intermediate frequency digital signal before outputting it.

[0063] The baseband subsystem 32 processes the signal output from the radio frequency subsystem 31 to obtain the baseband signal. Specifically, the baseband subsystem 32 can perform analog-to-digital conversion, signal acquisition, signal tracking, signal demodulation, and positioning observation data calculation on the intermediate frequency analog signal; the baseband subsystem 32 can also directly perform signal acquisition, signal tracking, signal demodulation, and positioning observation calculation on the intermediate frequency digital signal.

[0064] The application processor subsystem 33 schedules and configures the baseband subsystem 32, and performs positioning, velocity measurement, and timing processing based on the positioning observations reported by the baseband subsystem 32. Specifically, the application processor subsystem 33 can use positioning observations such as pseudorange and carrier phase, combined with satellite coordinates in the navigation message, to calculate the receiver's three-dimensional position, time, and velocity. It can also jointly process positioning observations from various satellite navigation systems to improve positioning reliability and anti-interference capabilities, and enhance positioning accuracy and stability.

[0065] In some embodiments, the radio frequency subsystem 31 includes a first receiving channel, a second receiving channel, a third receiving channel, and a fourth receiving channel. The first and second receiving channels are connected to the two output terminals of the tripod 50, respectively. The third receiving channel is connected to the third radio frequency input port 53, and the fourth receiving channel is connected to the fourth radio frequency input port 54.

[0066] In a single-antenna full-band positioning scenario, the other output of the tripod 50 is connected to the third receiving channel via the second RF input port 52 and the third RF input port 53, while the fourth RF input port 54 and the fourth receiving channel remain idle. The first, second, and third receiving channels can be configured to receive RF signals in the 1559.052MHz~1605.886MHz (MFH band), 1237.830MHz~1283.865MHz (LFH band), and 1166.220MHz~1237.830MHz (LFL band) frequency bands, respectively.

[0067] The MFH band radio frequency signal is input into the GNSS receiver module 3 through the first output terminal and the first receiving channel of the tripeller 50; the LFL band radio frequency signal is input into the GNSS receiver module 3 through the second output terminal and the second receiving channel of the tripeller; the LFL band radio frequency signal is input into the GNSS receiver module 3 through the third output terminal, the second radio frequency input port 52, the third radio frequency input port 53, and the third receiving channel of the tripeller. The GNSS receiver module 3 processes the received radio frequency signals to achieve single-antenna full-frequency positioning.

[0068] In a dual-antenna, tri-frequency positioning and orientation scenario, the other output of the tripeller 50 is directly connected to the second RF input port 52, leaving the second RF input port 52 idle. The first receiving channel can be configured to receive RF signals from the first antenna in the 1559.052MHz–1605.886MHz frequency band; the third receiving channel can be configured to receive RF signals from the second antenna in the 1559.052MHz–1605.886MHz frequency band; the second receiving channel can be configured to receive RF signals from the first antenna in the 1237.830MHz–1283.865MHz frequency band; and the fourth receiving channel can be configured to receive RF signals from the second antenna in the 1237.830MHz–1283.865MHz frequency band.

[0069] The MFH band radio frequency signal obtained from the satellite navigation signal received by the first antenna 20 is input into the GNSS receiver module 3 through the first output terminal and the first receiving channel of the tripeller 50; the LFL band radio frequency signal is input into the GNSS receiver module 3 through the second output terminal and the second receiving channel of the tripeller 50. The MFH band radio frequency signal obtained from the satellite navigation signal received by the second antenna 30 is input into the GNSS receiver module 3 through the third radio frequency input port 53 and the third receiving channel; the LFL band radio frequency signal is input into the GNSS receiver module 3 through the fourth radio frequency input port 54 and the fourth receiving channel. The GNSS receiver module 3 processes the received radio frequency signals to achieve dual-line tri-frequency positioning and orientation.

[0070] By receiving satellite navigation signals through the first and second antennas respectively, the signal anti-interference capability and redundancy can be enhanced. The four independent receiving channels realize the isolation processing and parallel sampling of signals in different frequency bands, which can adapt to the scenario requirements of high-frequency high-precision positioning and low-frequency strong penetration. At the same time, it supports multi-frequency fusion calculation to improve positioning and orientation accuracy. Furthermore, it can adapt to complex environments through flexible antenna configuration and hardware expansion, ensuring the reliability and real-time performance of positioning and orientation.

[0071] In some embodiments, the peripheral interface 6 connected to the application processor subsystem 33 includes a CAN interface, an Ethernet interface, an eMMC interface, a UART interface, an SPI interface, and an I / O interface. 2 One or more of the following: C interface, time synchronization signal interface, and GPIO interface.

[0072] Among them, the CAN interface is used to connect to components that support the CAN protocol; the Ethernet interface is used to connect to Ethernet chips or interfaces; the eMMC interface is used to connect to flash memory or EEPRAM; the UART interface is used to connect to chips or interfaces that support the UART serial port protocol; and the SPI interface is used to connect to chips or interfaces that support the SPI protocol. 2 The C interface is used for external connections and supports I / O. 2 The chip or interface uses the C serial port protocol; the time synchronization signal interface is used to output a fixed frequency second pulse signal; the GPIO interface is used for GPIO signal input and output connection, and specific applications can be configured through software.

[0073] By setting different peripheral interfaces 6, the system-in-package chip provided by this utility model can adapt to the needs of multiple scenarios such as automotive, industrial equipment, or consumer electronics, reducing product adaptation costs. Dedicated interfaces such as CAN, Ethernet, and eMMC ensure high performance and low power consumption for the chip's core functions. UART, SPI, and I... 2The C interface, time synchronization signal interface, and GPIO and other communication interfaces enable external interaction links, allowing the chip to meet the technical requirements of high-precision positioning and adapt to diverse application scenarios.

[0074] In addition, the application processor subsystem 33 is equipped with a high-performance application processor that integrates a double-precision floating-point arithmetic processing unit. Users can choose to use the built-in high-precision positioning and direction finding algorithms or perform secondary development on the application processor to realize various applications such as RTK (Real-Time Kinematic), PPP (Precise Point Positioning), PPP-RTK (Precise Point Positioning and Real-Time Kinematic Fusion Technology), and multi-sensor data fusion processing.

[0075] In some embodiments, when the chip is used for single-antenna full-frequency positioning scenarios, the supported global satellite navigation systems and signals include:

[0076] The signals include B1I, B1C, B2I, B2a, B2b, and B3I from the BeiDou Navigation Satellite System; L1CA, L1C, L2C, and L5 from the Global Positioning System; G1 and G2 from the GLONASS Global Navigation Satellite System; E1, E5a, E5b, and E6 from the Galileo Navigation Satellite System; L1CA, L1C, L1S, L5, and L6 from the Quasi-Zenith Satellite System; L1 and L5 from the Indian Regional Navigation Satellite System; and L1 from the Satellite Augmentation System.

[0077] When the chip is used in dual-antenna tri-frequency positioning and orientation scenarios, the supported global satellite navigation systems and signals include:

[0078] The signals include B1I, B1C, B2I, B2a, and B2b from the BeiDou Navigation Satellite System; L1CA, L1C, L2C, and L5 from the Global Positioning System; G1 from the GLONASS Global Navigation Satellite System; E1, E5a, and E5b from the Galileo Navigation Satellite System; L1CA, L1C, L1S, and L5 from the Quasi-Zenith Satellite System; L1 and L5 from the Indian Regional Navigation Satellite System; and L1 from the Satellite Augmentation System.

[0079] The system-in-package chip provided in this embodiment of the present invention highly integrates a power module 1, a clock module 2, a GNSS receiver module 3, a storage module 4, and an RF front-end module 5, thereby greatly reducing the size of the chip.

[0080] In modern electronic devices such as smartphones and portable wireless devices where space resources are extremely scarce, this miniaturized chip frees up more space for other components, contributing to the thinner and smaller design of the device. Furthermore, by integrating multiple functional modules into the same package, the connection distance between these modules is significantly shortened, reducing signal transmission paths and effectively miniaturizing signal loss and interference, thus improving signal stability and speed. This enables devices using this system-in-package chip to process received signals accurately and quickly.

[0081] like Figure 3 As shown, this utility model embodiment also provides a receiver for a satellite navigation system, which includes a global satellite navigation system-in-package chip and a single antenna 10 as described above. The single antenna 10 is connected to the first radio frequency input port 51 of the system-in-package chip, and the second radio frequency input port 52 and the third radio frequency input port 53 are connected externally to the chip.

[0082] The single antenna 10 is used to receive satellite radio frequency signals and convert them into electrical signals, providing a foundation for subsequent signal processing. Leveraging its system-in-package (SiP) advantages, this system-in-package chip integrates multiple functional modules and possesses powerful signal processing capabilities.

[0083] When the single antenna 10 receives satellite radio frequency signals and converts them into electrical signals, these signals are transmitted to the first radio frequency input port 51 of the system-in-package (SoC) via a connection line. The SoC's internal RF front-end module 5 performs preliminary processing on the input RF signals, including RF signal separation, amplification, and filtering. Since satellite signals are subject to various interferences and attenuation during transmission, these processing steps of the RF front-end module 5 effectively improve the signal quality and strength, making it more suitable for subsequent processing. The RF signal output from the RF front-end module 5 is input to the RF subsystem 31.

[0084] The baseband subsystem 32 inside the system-in-package chip receives and processes the signal after it has been processed by the radio frequency subsystem 31, including signal acquisition, tracking, and message demodulation. When the signal input to the baseband subsystem 32 is an analog signal, an analog-to-digital converter is also required for sampling.

[0085] The application processor subsystem 33 inside the system-in-package chip is used to schedule and configure the baseband subsystem 32, and to perform positioning, speed measurement and timing processing based on the observations reported by the baseband subsystem 32.

[0086] like Figure 4As shown, this utility model embodiment also provides another satellite navigation system receiver, which includes a global satellite navigation system-in-package chip as described above, a first antenna 20, a second antenna 30, and a duplexer 40. The first antenna is connected to a first radio frequency input port 51, the second antenna 30 is connected to the input terminal of the duplexer 40, and the two output terminals of the duplexer 40 are respectively connected to a third radio frequency input port 53 and a fourth radio frequency input port 54.

[0087] Both the first antenna 20 and the second antenna 30 are used to receive satellite radio frequency signals and convert them into electrical signals, providing a foundation for subsequent signal processing. Leveraging its system-in-package (SiP) advantages, this system-in-package chip integrates multiple functional modules and possesses powerful signal processing capabilities.

[0088] The satellite radio frequency signal received by the first antenna 20 is divided into two frequency bands, 1559.052MHz~1605.886MHz and 1237.830MHz~1283.865MHz, by a tripper inside the system-in-package chip. The satellite radio frequency signal received by the second antenna 30 is divided into two frequency bands, 1559.052MHz~1605.886MHz and 1237.830MHz~1283.865MHz, by a duplexer 40 outside the system-in-package chip.

[0089] The radio frequency (RF) subsystem 31 within the system-in-package (SoC) performs preliminary processing on the two sets of input signals (each set including signals from two frequency bands: 1559.052MHz–1605.886MHz and 1237.830MHz–1283.865MHz), including RF signal amplification and filtering. Since satellite signals are subject to various interferences and attenuation during transmission, these processing steps by the RF subsystem 31 effectively improve the signal quality and strength, making it more suitable for subsequent processing.

[0090] The baseband subsystem 32 inside the system-in-package chip receives and processes the signal after it has been processed by the radio frequency subsystem 31, including signal acquisition, tracking, and message demodulation. When the signal input to the baseband subsystem 32 is an analog signal, an analog-to-digital converter is also required for sampling.

[0091] The application processor subsystem 33 inside the system-in-package chip is used to schedule and configure the baseband subsystem 32, and to perform positioning, speed measurement and timing processing based on the observations reported by the baseband subsystem 32.

[0092] It should be noted that the antenna used in the dual-antenna tri-frequency positioning and orientation scenario can be reused in the single-antenna full-frequency positioning scenario, so only one additional antenna needs to be prepared.

[0093] like Figure 5 As shown, this utility model also provides a receiver for a satellite navigation system, which includes a first antenna 20, a second antenna 30, a duplexer 40, an RF switching switch 60, and the aforementioned system-in-package chip. The RF switching switch 60 can selectively connect the second RF input port 52 and the third RF input port 53, or connect the third RF input port 53 and one output terminal of the duplexer 40, depending on the need to achieve single-antenna full-frequency positioning or dual-antenna tri-frequency positioning and orientation functions.

[0094] Specifically, when implementing the single-antenna full-frequency positioning function, the first antenna 20 is connected to the first radio frequency input port 51, and the second radio frequency input port 52 is connected to the third radio frequency input port 53 outside the chip through the radio frequency switching switch 60.

[0095] The tripeller separates the satellite navigation signal received by the first antenna 20 into radio frequency (RF) signals in the MFH, LFL, and LFH bands. The MFH band RF signal is input to the GNSS receiver module 3 through the tripeller's first output and first receiving channel; the LFL band RF signal is input to the GNSS receiver module 3 through the tripeller's second output and second receiving channel; and the LFH band RF signal is input to the GNSS receiver module 3 through the tripeller's third output, second RF input port 52, third RF input port 53, and third receiving channel. The GNSS receiver module 3 processes the received RF signals to achieve single-antenna full-band positioning.

[0096] When implementing the dual-antenna tri-frequency positioning and orientation function, the first antenna 20 is connected to the first radio frequency input port 51, the second antenna 30 is connected to the input of the duplexer 40, one output of the duplexer 40 is connected to the third radio frequency input port 53 through the radio frequency switching switch 60, and the other output of the duplexer 40 is connected to the fourth radio frequency input port 54.

[0097] The tripeller separates the satellite navigation signal received by the first antenna 20 to obtain radio frequency signals in the MFH, LFL, and LFH bands. The MFH band radio frequency signal is input into the GNSS receiver module 3 through the first output terminal and the first receiving channel of the tripeller; the LFL band radio frequency signal is input into the GNSS receiver module 3 through the second output terminal and the second receiving channel of the tripeller; the LFH band radio frequency signal is discarded and not further transmitted or processed.

[0098] The duplexer 40 separates the satellite navigation signal received by the second antenna 30 into MFH and LFL band radio frequency signals. The MFH band radio frequency signal is input to the GNSS receiver module 3 through the first output, third RF input port 53, and fourth receiving channel of the duplexer 40; the LFL band radio frequency signal is input to the GNSS receiver module 3 through the second output, fourth RF input port, and fourth receiving channel of the duplexer. The GNSS receiver module 3 processes the received radio frequency signals to achieve dual-antenna tri-frequency positioning and orientation.

[0099] By setting the RF switching switch 60, the third RF input port 53 can be selectively connected to the second RF input port 52 or the duplexer 40, thereby enabling the use of two antennas to switch between single-antenna full-frequency positioning and dual-antenna tri-frequency positioning and orientation functions. Specifically, when implementing the dual-antenna tri-frequency positioning and orientation function, the antenna used for the single-antenna full-frequency positioning function can be reused.

[0100] The receiver of this satellite navigation system uses two antennas and a system-in-package chip to meet the needs of both single-antenna full-frequency positioning and dual-antenna tri-frequency positioning and orientation scenarios, thereby reducing hardware costs and shrinking the size and weight of the device. At the same time, the reduction in the number of antennas simplifies the system design complexity and reduces the difficulty of power consumption and electromagnetic compatibility design.

[0101] This utility model embodiment also provides an electronic device, which includes a receiver for a satellite navigation system as described above.

[0102] The electronic device can be a professional-grade product such as a drone, robot, and intelligent driving terminal, or a consumer-grade product such as a smartphone, smartwatch, tablet, and navigator.

[0103] Those skilled in the art will understand that, without conflict, the above-mentioned preferred solutions can be freely combined and superimposed.

[0104] It should be understood that the above-described embodiments are merely exemplary and not restrictive. Without departing from the basic principles of this utility model, any obvious or equivalent modifications or substitutions made by those skilled in the art regarding the above details will be included within the scope of the claims of this utility model.

Claims

1. A system-in-package chip for global satellite navigation, characterized by, It can be reused in single-antenna full-frequency positioning scenarios and dual-antenna tri-frequency positioning and orientation scenarios. The chip contains at least a power module, a clock module, a GNSS receiver module, a storage module and an RF front-end module. The chip is provided with peripheral interfaces. The power supply module is connected to the clock module, GNSS receiver module, and storage module, respectively, and converts the input voltage into the operating voltage for the clock module, GNSS receiver module, and storage module. The clock module is connected to the GNSS receiver module and provides a clock signal to the GNSS receiver module. The input terminal of the RF front-end module is connected to an external single or dual antenna, and the output terminal of the RF front-end module is connected to the GNSS receiver module. The GNSS receiver module interacts with the storage module and is connected to the peripheral interface.

2. The system-in-package chip for global satellite navigation according to claim 1, wherein, The radio frequency front-end module includes a tripeller and a radio frequency input port. The radio frequency input port includes a first radio frequency input port, a second radio frequency input port, a third radio frequency input port, and a fourth radio frequency input port. The input terminal of the tripeller is connected to the first radio frequency input port. The first and second output terminals of the tripeller are connected to the two receiving channels of the GNSS receiver module. The third output terminal of the tripeller is connected to the second radio frequency input port. The third and fourth radio frequency input ports are connected to the other two receiving channels of the GNSS receiver module.

3. The system-in-package chip for global satellite navigation according to claim 2, wherein, Each of the power module, clock module, GNSS receiver module, storage module, and tripod is a separate, unpackaged die or finished module; or... At least one of the power module, clock module, GNSS receiver module, storage module, and tripod is a separate unpackaged die, and at least one is a finished module.

4. The system-in-package chip for global satellite navigation according to claim 2, wherein, The first RF input port, the second RF input port, and the third RF input port are used for single-antenna full-frequency positioning scenarios, while the first RF input port, the third RF input port, and the fourth RF input port are used for dual-antenna tri-frequency positioning and orientation scenarios.

5. The system-in-package chip for global satellite navigation according to claim 4, wherein, When the chip is used in a single-antenna full-frequency positioning scenario, the first RF input port is externally connected to a single antenna, and the second RF input port is externally connected to the third RF input port, so that the RF signal received by the single antenna is separated into three signals by the tripeller and then input into the three receiving channels of the GNSS receiver module respectively.

6. The system-in-package chip for global satellite navigation according to claim 5, wherein, The frequency bands of the three signals are 1559.052MHz~1605.886MHz, 1237.830MHz~1283.865MHz and 1166.220MHz~1237.830MHz.

7. The system-in-package chip for global satellite navigation according to claim 4, wherein, When the chip is used in a dual-antenna tri-frequency positioning and orientation scenario, the first RF input port is externally connected to the first antenna, and the third and fourth RF input ports are externally connected to the second antenna via a duplexer. This allows the RF signal received by the first antenna to be separated into three signals by the duplexer, with two of these signals being input to the two receiving channels of the GNSS receiver module, and the RF signal received by the second antenna to be separated into two signals by the duplexer and input to the other two receiving channels of the GNSS receiver module.

8. The system-in-package chip for global satellite navigation according to claim 7, wherein, The frequency bands of the two signals input to the GNSS receiver module through the tripeller are 1559.052MHz~1605.886MHz and 1237.830MHz~1283.865MHz; the frequency bands of the two signals input to the GNSS receiver module through the duplexer are 1559.052MHz~1605.886MHz and 1237.830MHz~1283.865MHz.

9. The system-in-package chip for global satellite navigation according to claim 2, wherein, The GNSS receiver module includes a radio frequency subsystem, a baseband subsystem, and an application processor subsystem connected in sequence.

10. The system-in-package chip for global satellite navigation according to claim 9, wherein, The radio frequency subsystem includes a first receiving channel, a second receiving channel, a third receiving channel, and a fourth receiving channel. The first and second receiving channels are connected to the two output terminals of the tripod, the third receiving channel is connected to the third radio frequency input port, and the fourth receiving channel is connected to the fourth radio frequency input port.

11. The system-in-package chip for global satellite navigation according to claim 9, wherein, The application processor subsystem is connected to the peripheral interface, which includes one or more of a CAN interface, an Ethernet interface, an eMMC interface, a UART interface, an SPI interface, an I 2 C interface, a time synchronization signal interface, and a GPIO interface.

12. A receiver of a satellite navigation system, characterized in that It includes a single antenna and a system-in-package (SoC) chip for global satellite navigation as described in any one of claims 2-11, wherein the single antenna is connected to the first radio frequency (RF) input port of the SoC chip, and the second RF input port and the third RF input port are connected externally to the chip.

13. A receiver of a satellite navigation system, characterized in that The system includes a first antenna, a second antenna, a duplexer, and a system-in-package (SoC) chip for global satellite navigation as described in any one of claims 2-11. The first antenna is connected to the first radio frequency (RF) input port of the SoC chip, the second antenna is connected to the input of the duplexer, and the two outputs of the duplexer are respectively connected to the third RF input port and the fourth RF input port.

14. A receiver of a satellite navigation system, characterized in that Includes a first antenna, a second antenna, a duplexer, an RF switching switch, and a system-in-package chip as described in any one of claims 2-11; When implementing the single-antenna full-frequency positioning function, the first antenna is connected to the first radio frequency input port, and the second radio frequency input port is connected to the third radio frequency input port outside the chip through the radio frequency switching switch; When implementing the dual-antenna tri-frequency positioning and orientation function, the first antenna is connected to the first radio frequency input port, the second antenna is connected to the input of the duplexer, one output of the duplexer is connected to the third radio frequency input port through the radio frequency switching switch, and the other output of the duplexer is connected to the fourth radio frequency input port.

15. An electronic device, comprising: Includes the receiver of the satellite navigation system as described in claim 12, 13, or 14.

Images