Integrated small-size UWB antenna radio frequency front-end circuit

Abstract

The utility model relates to wireless communication technical field, and disclose a kind of integrated small size UWB antenna radio frequency front-end circuit, comprising: integrated radio frequency circuit module: integrated design is used, UWB antenna and radio frequency front-end circuit are integrated in one, to reduce signal loss and promote overall performance;This module contains ultra-wideband (UWB) frequency band support, adapts the ultra-wide spectrum demand of UWB.The utility model is integrated design, UWB antenna and radio frequency front-end circuit are closely integrated in one.This design effectively reduces the loss of signal in transmission process, because signal does not need long-distance transmission between multiple independent components, to reduce the possibility of signal attenuation and interference.Integrated design also improves the overall performance of circuit, because the cooperative work between each component is more closely and efficiently, ensure the stability and accuracy of signal in transmission and processing process.

Description

TECHNICAL FIELD

[0001] The utility model relates to wireless communication technical field, concretely relates to a kind of integrated small size UWB (ultra-wideband) antenna radio frequency front-end circuit.The circuit is suitable for the application scene needing short distance, high-speed data transmission, such as smart home, industrial ranging, consumer electronics wireless charging and Internet of Things equipment short distance communication etc. BACKGROUND

[0002] With the rapid development of wireless communication technology, UWB technology is widely used in short-range wireless communication field due to its high bandwidth, low power consumption, high-precision positioning and other advantages.However, the traditional UWB antenna radio frequency front-end circuit often has problems such as large size, low integration, large signal loss, etc., which is difficult to meet the needs of modern electronic devices for miniaturization, integration and high performance.

[0003] In order to solve the above problems, the utility model provides an integrated small size UWB antenna radio frequency front-end circuit.The circuit is integrated by design, which integrates UWB antenna and radio frequency front-end circuit closely, not only reduces signal loss and improves overall performance, but also realizes product miniaturization and modularization, which is convenient for deployment in various space-limited application scenarios. SUMMARY

[0004] The utility model aims at providing an integrated small size UWB antenna radio frequency front-end circuit, which solves the technical problems of large size, low integration and large signal loss of traditional UWB circuit, achieves the design goal of miniaturization and high performance, and improves the stability and efficiency of short distance communication.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: an integrated small size UWB antenna radio frequency front-end circuit, comprising:

[0006] Integrated radio frequency circuit module: integrated design is adopted to integrate UWB antenna and radio frequency front-end circuit to reduce signal loss and improve overall performance; the module contains ultra-wideband (UWB) frequency band support to adapt to the ultra-wide spectrum demand of UWB;

[0007] Amplifier array: including multi-stage amplifier (A1 / A2 / A3 / A4 / A5 / A6) for signal amplification; wherein, A1 is low noise amplifier (LNA) for amplifying weak radio frequency signal; A5 / A6 is power amplifier (PA) for driving subsequent circuit or antenna;

[0008] Passive device network: composed of resistance (R) and capacitance (C) to form filter / matching network to realize signal filtering and impedance matching; the network contains LC filter for removing out-of-band noise;

[0009] Antenna interface module: includes "ANTI" (antenna) and "TRX" (transmit / receive switching) interfaces for connecting antennas and enabling signal transmission and reception;

[0010] Control unit: contains the digital label "G1" and the document label "UWB antenna specification", used for circuit control and parameter configuration;

[0011] Miniaturized packaging structure: small size design is adopted to facilitate product modularization and improve system integration; star-shaped ground layout is used between each amplifier stage to reduce crosstalk and improve circuit stability.

[0012] Preferably, the integrated RF circuit module implements signal processing in the following way:

[0013] Through integrated design, the UWB antenna and the RF front-end circuit are closely integrated to reduce signal transmission loss;

[0014] Adapting to the ultra-wide spectrum requirements of UWB, the circuit ensures normal operation within the UWB frequency band;

[0015] A π-type network (R-C-R) is used to achieve 50Ω system impedance matching, improving signal transmission efficiency.

[0016] Preferably, the amplifier array implements signal amplification in the following way:

[0017] Multiple-stage amplifiers (A1 / A2 / A3 / A4 / A5 / A6) work in cascade to amplify signals step by step;

[0018] A1 as a low-noise amplifier (LNA) performs preliminary amplification on the input weak RF signal while maintaining a low noise figure;

[0019] A5 / A6 as a power amplifier (PA) performs final amplification on the signal to drive subsequent circuits or antennas.

[0020] Preferably, the passive device network implements signal filtering and impedance matching in the following way:

[0021] The filter / matching network composed of resistors (R) and capacitors (C) performs filtering on the signal to remove out-of-band noise;

[0022] By adjusting the values of resistors and capacitors, specific filtering characteristics and impedance matching are achieved;

[0023] LC filters are used to further suppress harmonics and spurious signals, improving signal quality.

[0024] Preferably, the antenna interface module implements antenna connection and signal transmission and reception in the following way:

[0025] The “ANTI” interface is used to connect a UWB antenna to enable signal reception and transmission;

[0026] The “TRX” interface is used to switch between transmit and receive modes and control the operating mode of the circuit.

[0027] The interface module adopts a standardized connection method, which facilitates connection and communication with external devices.

[0028] Preferably, the control unit implements circuit control and parameter configuration in the following manner:

[0029] The circuit's operating status is monitored and adjusted using the digital label "G1" and the document tag "UWB Antenna Specification".

[0030] To enable the configuration and optimization of circuit parameters to adapt to different working environments and application requirements;

[0031] Provide necessary protection mechanisms to prevent circuit damage due to abnormal conditions such as overvoltage and overcurrent.

[0032] Preferably, the miniaturized packaging structure improves system integration in the following ways:

[0033] The small size design reduces the volume and weight of the circuit modules, facilitating modular product design.

[0034] A star-grounded layout is used between each amplifier stage to reduce crosstalk and electromagnetic interference and improve circuit stability;

[0035] The packaging structure employs high-density integration technology to improve the integration and reliability of the circuit modules.

[0036] Preferably, it also includes at least one of the following potential optimization directions:

[0037] Supplement the S-parameter table for specific device models to verify cascade gain and circuit performance;

[0038] Adding EMI shielding structure improves the circuit's anti-interference capability;

[0039] Introducing a negative feedback resistor network improves amplifier stability;

[0040] Verify whether the filter cutoff frequency covers the edge of the UWB band.

[0041] This invention provides an integrated, small-size UWB antenna RF front-end circuit. It features the following:

[0042] Beneficial effects:

[0043] (1) This utility model adopts an integrated design, tightly integrating the UWB antenna and the RF front-end circuit into one unit. This design effectively reduces signal loss during transmission because the signal does not need to be transmitted over long distances between multiple independent components, thereby reducing the possibility of signal attenuation and interference. The integrated design also improves the overall performance of the circuit because the cooperation between the various components is closer and more efficient, ensuring the stability and accuracy of the signal during transmission and processing.

[0044] (2) By adopting a small-size design, this utility model significantly reduces the size and weight of the circuit module. This not only facilitates product miniaturization but also makes the circuit module easier to integrate into various space-constrained application scenarios. The modular design allows the circuit module to be produced and tested as an independent unit, improving production efficiency and product quality. At the same time, the modular design also facilitates product maintenance and upgrades, reducing later maintenance costs.

[0045] (3) This utility model adopts a multi-stage amplifier array design, including a low-noise amplifier (LNA) and a power amplifier (PA). The LNA initially amplifies the weak input radio frequency signal while maintaining a low noise figure, thereby improving the signal-to-noise ratio. The PA further amplifies the signal to ensure that the signal has sufficient strength during transmission. The multi-stage amplifiers work in cascade, amplifying the signal stage by stage, ensuring the stability and reliability of the signal during transmission.

[0046] (4) This utility model employs a passive device network, including resistors, capacitors, and other components, to form a filtering / matching network. Through precise parameter design, these components achieve accurate filtering of the signal, effectively removing out-of-band noise and interference signals, and improving signal purity. At the same time, the passive device network also achieves impedance matching, ensuring impedance continuity of the signal during transmission, reducing signal reflection and loss, and improving signal transmission efficiency.

[0047] (5) This utility model adopts a standardized antenna interface module, including an "ANTI" (antenna) and a "TRX" (transmit / receive switching) interface. These interfaces use standardized connection methods, which facilitates connection and communication with external devices. The "TRX" interface realizes the transmit / receive switching function, allowing the circuit to flexibly switch the working mode as needed. This design not only improves the applicability of the circuit, but also reduces the complexity and cost of the system.

[0048] (6) This utility model is equipped with an intelligent control unit to monitor and adjust the circuit's operating status in real time. Through digital marking and document tags, the control unit can achieve precise configuration and optimization of circuit parameters to adapt to different working environments and application requirements. The control unit also provides necessary protection mechanisms, such as overvoltage and overcurrent protection, to prevent circuit damage due to abnormal conditions. This design not only improves the reliability of the circuit but also extends its service life.

[0049] (7) This utility model also proposes potential optimization directions, such as supplementing the S-parameter table of specific device models to verify cascade gain and circuit performance; adding EMI shielding structures to improve the circuit's anti-interference capability; introducing a negative feedback resistor network to improve amplifier stability; and verifying the filter cutoff frequency to ensure frequency band coverage. These optimization directions will further improve the circuit's performance and reliability, meeting the ever-changing market demands and technological developments.

[0050] (8) This utility model is applicable to various application scenarios, such as smart home UWB positioning systems, industrial ranging radar front-ends, consumer electronics wireless charging modules, and short-range communication for IoT devices. These application scenarios have high requirements for circuit performance and reliability, and this utility model can meet these needs. With the continuous development and popularization of wireless communication technology, the market potential of this utility model will be further expanded. Attached Figure Description

[0051] Figure 1 This is a schematic diagram of the integrated small-size UWB antenna RF front-end circuit of this utility model;

[0052] Figure 2 This is a detailed circuit diagram of the radio frequency circuit module of this utility model;

[0053] Figure 3 This is a schematic diagram of the UWB antenna interface module of this utility model;

[0054] Figure 4 This is a view showing the specific layout or arrangement of the components of this utility model on a circuit board;

[0055] Figure 5 This is a connection bit view corresponding to the schematic diagram and antenna diagram of this utility model. Detailed Implementation

[0056] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0057] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0058] Example 1:

[0059] Addressing the problems of large size, low integration, and significant signal loss in traditional UWB circuits, this invention provides a preferred embodiment of an integrated, small-size UWB antenna RF front-end circuit, for example... Figures 1-5 As shown: An integrated small-size UWB antenna RF front-end circuit, comprising:

[0060] Integrated RF circuit module: The module adopts an integrated design, integrating the UWB antenna with the RF front-end circuitry to reduce signal loss and improve overall performance; the module includes ultra-wideband (UWB) band support to meet the ultra-wide spectrum requirements of UWB.

[0061] Amplifier array: includes multi-stage amplifiers (A1 / A2 / A3 / A4 / A5 / A6) for signal amplification; among them, A1 is a low-noise amplifier (LNA) to amplify weak radio frequency signals; A5 / A6 are power amplifiers (PA) to drive subsequent circuits or antennas.

[0062] Passive component network: A filter / matching network composed of resistors (R) and capacitors (C) to achieve signal filtering and impedance matching; this network includes an LC filter to remove out-of-band noise;

[0063] Antenna interface module: includes “ANTI” (antenna) and “TRX” (transmit / receive switch) interfaces, used to connect the antenna and realize signal transmission and reception;

[0064] Control unit: Includes the digital label "G1" and the document label "UWB Antenna Specification", used for circuit control and parameter configuration;

[0065] Miniaturized packaging structure: The small size design facilitates product modularization and improves system integration; the star grounding layout between each amplifier stage reduces crosstalk and improves circuit stability.

[0066] Example 2:

[0067] Please see Figures 1-5 Furthermore, based on Example 1, the integrated radio frequency circuit module achieves signal processing in the following manner:

[0068] Through integrated design, the UWB antenna is tightly integrated with the RF front-end circuit, reducing signal loss during transmission;

[0069] To adapt to the ultra-wide spectrum requirements of UWB, ensuring that the circuit can operate normally in the UWB band;

[0070] A π-type network (RCR) is used to achieve impedance matching in a 50Ω system, thereby improving signal transmission efficiency.

[0071] Furthermore, it was found that the amplifier array amplifies the signal in the following way:

[0072] Multi-stage amplifiers (A1 / A2 / A3 / A4 / A5 / A6) are cascaded to amplify the signal stage by stage;

[0073] A1 acts as a low-noise amplifier (LNA) to initially amplify weak input radio frequency signals while maintaining a low noise figure.

[0074] A5 / A6, acting as power amplifiers (PAs), amplify signals to drive subsequent circuitry or antennas.

[0075] Furthermore, it was found that passive device networks achieve signal filtering and impedance matching in the following ways:

[0076] A filter / matching network consisting of resistors (R) and capacitors (C) is used to filter the signal and remove out-of-band noise.

[0077] By adjusting the values ​​of resistors and capacitors, specific filtering characteristics and impedance matching can be achieved.

[0078] LC filters are used to further suppress harmonics and spurious signals, thereby improving signal quality.

[0079] Furthermore, it was found that the antenna interface module achieves antenna connection and signal transmission / reception in the following ways:

[0080] The “ANTI” interface is used to connect a UWB antenna to enable signal reception and transmission;

[0081] The “TRX” interface is used to switch between transmit and receive modes and control the operating mode of the circuit.

[0082] The interface module adopts a standardized connection method, which facilitates connection and communication with external devices.

[0083] Furthermore, it is found that the control unit achieves circuit control and parameter configuration in the following ways:

[0084] The circuit's operating status is monitored and adjusted using the digital label "G1" and the document tag "UWB Antenna Specification".

[0085] To enable the configuration and optimization of circuit parameters to adapt to different working environments and application requirements;

[0086] Provide necessary protection mechanisms to prevent circuit damage due to abnormal conditions such as overvoltage and overcurrent.

[0087] Furthermore, we found that miniaturized packaging structures improve system integration in the following ways:

[0088] The small size design reduces the volume and weight of the circuit modules, facilitating modular product design.

[0089] A star-grounded layout is used between each amplifier stage to reduce crosstalk and electromagnetic interference and improve circuit stability;

[0090] The packaging structure employs high-density integration technology to improve the integration and reliability of the circuit modules.

[0091] Furthermore, it is found that at least one of the following potential optimization directions is also included:

[0092] Supplement the S-parameter table for specific device models to verify cascade gain and circuit performance;

[0093] Adding EMI shielding structure improves the circuit's anti-interference capability;

[0094] Introducing a negative feedback resistor network improves amplifier stability;

[0095] Verify whether the filter cutoff frequency covers the edge of the UWB band.

[0096] In use, the UWB antenna is first integrated with the RF front-end circuitry to form an integrated RF circuit module. This module contains multiple amplifier stages (A1 / A2 / A3 / A4 / A5 / A6), where A1 is a low-noise amplifier (LNA) and A5 / A6 are power amplifiers (PA). After initial amplification by A1, the signal enters a passive component network for filtering and impedance matching. The passive component network consists of resistors (R) and capacitors (C), including an LC filter to remove out-of-band noise. Simultaneously, a π-type network (RCR) achieves 50Ω system impedance matching, improving signal transmission efficiency.

[0097] After filtering and impedance matching, the signal enters the subsequent amplifier stage for further amplification. Each stage of the amplifier array employs a star-grounded layout to reduce crosstalk and electromagnetic interference, improving circuit stability. Finally, the amplified signal is transmitted or received through the antenna interface module. The antenna interface module includes "ANTI" (antenna) and "TRX" (transmit / receive switch) interfaces, using standardized connection methods for easy connection and communication with external devices.

[0098] The control unit contains the digital label "G1" and the document label "UWB Antenna Specification," used for circuit control and parameter configuration. Through the control unit, circuit parameters can be configured and optimized to adapt to different operating environments and application requirements.

[0099] The entire circuit module adopts a miniaturized packaging structure, reducing its size and weight and facilitating modular product design. The packaging structure utilizes high-density integration technology, improving the integration and reliability of the circuit module.

[0100] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An integrated small-size UWB antenna RF front-end circuit, characterized in that, include: Integrated RF circuit module: The module adopts an integrated design, integrating the UWB antenna with the RF front-end circuitry to reduce signal loss and improve overall performance; the module includes ultra-wideband (UWB) band support to meet the ultra-wide spectrum requirements of UWB. Amplifier array: includes multi-stage amplifiers (A1 / A2 / A3 / A4 / A5 / A6) for signal amplification; among them, A1 is a low-noise amplifier (LNA) to amplify weak radio frequency signals; A5 / A6 are power amplifiers (PA) to drive subsequent circuits or antennas. Passive component network: A filter / matching network composed of resistors (R) and capacitors (C) to achieve signal filtering and impedance matching; this network includes an LC filter to remove out-of-band noise; Antenna interface module: includes "ANTI" (antenna) and "TRX" (transmit / receive switch) interfaces, used to connect the antenna and realize signal transmission and reception; Control unit: Includes the digital label "G1" and the document label "UWB Antenna Specification", used for circuit control and parameter configuration; Miniaturized packaging structure: The small size design facilitates product modularization and improves system integration; the star grounding layout between each amplifier stage reduces crosstalk and improves circuit stability.

2. The integrated small-size UWB antenna RF front-end circuit according to claim 1, characterized in that: The integrated radio frequency circuit module performs signal processing in the following ways: Through integrated design, the UWB antenna is tightly integrated with the RF front-end circuit, reducing signal loss during transmission; To adapt to the ultra-wide spectrum requirements of UWB, ensuring that the circuit can operate normally in the UWB band; A π-type network (RCR) is used to achieve impedance matching in a 50Ω system, thereby improving signal transmission efficiency.

3. The integrated small-size UWB antenna RF front-end circuit according to claim 1, characterized in that: The amplifier array amplifies the signal in the following way: Multi-stage amplifiers (A1 / A2 / A3 / A4 / A5 / A6) are cascaded to amplify the signal stage by stage; A1 acts as a low-noise amplifier (LNA) to initially amplify weak input radio frequency signals while maintaining a low noise figure. A5 / A6, acting as power amplifiers (PAs), amplify signals to drive subsequent circuitry or antennas.

4. The integrated small-size UWB antenna RF front-end circuit according to claim 1, characterized in that: The passive device network achieves signal filtering and impedance matching in the following ways: A filter / matching network consisting of resistors (R) and capacitors (C) is used to filter the signal and remove out-of-band noise. By adjusting the values ​​of resistors and capacitors, specific filtering characteristics and impedance matching can be achieved. LC filters are used to further suppress harmonics and spurious signals, thereby improving signal quality.

5. The integrated small-size UWB antenna RF front-end circuit according to claim 1, characterized in that: The antenna interface module achieves antenna connection and signal transmission / reception in the following ways: The "ANTI" interface is used to connect a UWB antenna to enable signal reception and transmission; The "TRX" interface is used to switch between transmit and receive modes and control the operating mode of the circuit. The interface module adopts a standardized connection method, which facilitates connection and communication with external devices.

6. The integrated small-size UWB antenna RF front-end circuit according to claim 1, characterized in that: The control unit achieves circuit control and parameter configuration in the following ways: The circuit's operating status is monitored and adjusted using the digital label "G1" and the document tag "UWB Antenna Specification". To enable the configuration and optimization of circuit parameters to adapt to different working environments and application requirements; Provide necessary protection mechanisms to prevent circuit damage due to abnormal conditions such as overvoltage and overcurrent.

7. The integrated small-size UWB antenna RF front-end circuit according to claim 1, characterized in that: The miniaturized packaging structure improves system integration in the following ways: The small size design reduces the volume and weight of the circuit modules, facilitating modular product design. A star-grounded layout is used between each amplifier stage to reduce crosstalk and electromagnetic interference and improve circuit stability; The packaging structure employs high-density integration technology to improve the integration and reliability of the circuit modules.

8. The integrated small-size UWB antenna RF front-end circuit according to any one of claims 1 to 7, characterized in that, It also includes at least one of the following potential optimization directions: Supplement the S-parameter table for specific device models to verify cascade gain and circuit performance; Adding EMI shielding structure improves the circuit's anti-interference capability; Introducing a negative feedback resistor network improves amplifier stability; Verify whether the filter cutoff frequency covers the edge of the UWB band.

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