Integrated signal power adjusting device
By integrating a signal power adjustment device, the problems of low efficiency and poor accuracy in GNSS receiver testing are solved, and efficient and convenient signal input power and gain adjustment are achieved, which is suitable for testing various GNSS systems.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-03-31
AI Technical Summary
Existing GNSS receiver performance testing methods rely on manual operation, which is inefficient, inaccurate, and lacks repeatability. They are also difficult to fully cover all potential combinations of front-end gain parameters and signal input power scenarios, and are prone to damaging the hardware.
An integrated signal power conditioning device is provided, including a cavity structure, a signal attenuator, a low-noise amplifier, a signal power divider, and a DC signal isolator, to achieve precise signal control and multi-channel output, and to support testing of various GNSS systems.
It simplifies the testing process, improves testing efficiency and accuracy, reduces damage to hardware, and is suitable for efficient and convenient testing of various GNSS systems.
Smart Images
Figure CN224067005U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of power regulation technology, and in particular relates to an integrated signal power regulation device. Background Technology
[0002] With the widespread application of Global Navigation Satellite System (GNSS) technology in various fields such as transportation, communication, and surveying, the performance evaluation standards for GNSS receivers are constantly improving. Key parameters of GNSS receiver equipment, such as the setting of signal input front-end gain parameters, the range of received signal power, acquisition sensitivity, tracking sensitivity, and reacquisition sensitivity after lock-on, directly affect the performance of the GNSS receiver. These parameters not only affect the receiver's response speed and reliability in practical applications but are also crucial for the efficient operation of the navigation system.
[0003] Faced with increasingly stringent performance requirements, existing testing methods have revealed significant shortcomings. Currently, testing GNSS receiving equipment for aspects such as front-end gain parameter settings, received signal power range, acquisition sensitivity, tracking sensitivity, and reacquisition sensitivity after lock-on relies primarily on cumbersome manual procedures involving device configuration, parameter combinations, device replacement, and signal power adjustment. This includes configuring device models, setting parameter combinations, manually replacing hardware components, and adjusting the front-end signal input power. This highly manual testing method is not only inefficient and time-consuming, but the accuracy and repeatability of test results are also easily affected by the operator's skill level, experience, and operating environment, resulting in limited parameter traversal.
[0004] Manual soldering and frequent component replacement testing methods have significant limitations in terms of flexibility and comprehensiveness. When debugging different gains at the signal input front-end of a GNSS receiver, it is necessary to continuously change the component configurations, adjust parameters, and modify the signal input power of the gain and attenuation circuits. Frequent component replacements and parameter adjustments can easily cause potential or irreversible damage to the receiver hardware and may also introduce soldering failures due to instability in the operating process. Furthermore, the complexity and variability of component configurations and the nonlinear variations in parameter combinations make it difficult for existing methods to cover all potential front-end gain parameter combinations and test scenarios with different signal input powers, thus failing to comprehensively evaluate the receiver's performance under various conditions. This not only limits the depth of testing but also hinders the timely discovery and improvement of potential receiver problems, ultimately affecting the performance and reliability of the final product.
[0005] With the continuous expansion of GNSS technology applications and the increasing performance requirements, existing manual testing methods are no longer sufficient to meet the industry's high standards for GNSS receiver performance testing. For testing GNSS receiving equipment in areas such as signal input front-end gain parameter settings, received signal power acceptance range, acquisition sensitivity, tracking sensitivity, and reacquisition sensitivity after lock-on, a novel testing module is urgently needed to improve testing efficiency, achieve comprehensive coverage of test parameters, and ensure the accuracy, repeatability, and efficiency of test data. Therefore, developing an integrated GNSS signal input power and gain adjustment module is particularly necessary. Utility Model Content
[0006] The main objective of this utility model embodiment is to provide an integrated signal power adjustment device that can quickly select and adjust different front-end signal power and gain adjustment coefficients, and whose signal attenuation and gain control are not easily affected by external interference and the circuit soldering process of the receiving device.
[0007] In a first aspect, an integrated signal power adjustment device is provided, comprising: a cavity structure and a first signal attenuator, a low-noise amplifier, a signal power divider, and a second signal attenuator sequentially connected within the cavity structure of the object under test; the first signal attenuator of the object under test is configured to receive the signal to be adjusted and attenuate the input power of the signal to be adjusted of the object under test; the low-noise amplifier of the object under test is configured to filter and amplify the attenuated signal to be adjusted of the object under test; the second signal attenuator of the object under test is configured to adjust the gain of the amplified signal to be adjusted of the object under test; and the signal power divider of the object under test is configured to divide the signal output by the second signal attenuator of the object under test into multiple output signals and output them.
[0008] In another possible implementation, the power conditioning device further includes a power supply unit connected to the low-noise amplifier and the second signal attenuator, the power supply unit being configured to provide a stable power supply to the low-noise amplifier.
[0009] In one possible implementation, the power regulation device further includes a power interface disposed at one end of the cavity structure, and the power supply unit is disposed near the power interface and connected to the power interface.
[0010] In another possible implementation, the power conditioning device further includes a plurality of DC signal isolators connected to the signal power divider, the DC signal isolators being configured to isolate DC signals.
[0011] In another possible implementation, the signal power divider is located at the other end of the cavity structure, and the ends of the plurality of DC signal isolators away from the signal power divider protrude from the other end of the cavity structure.
[0012] In another possible implementation, the first signal attenuator and the second signal attenuator are respectively disposed on both sides of the cavity structure, and the low-noise amplifier is disposed on the side of the first signal attenuator closer to the center of the cavity structure.
[0013] In another possible implementation, a plurality of first adjustment buttons are provided in the first signal attenuator, configured to adjust the input power of the signal to be adjusted in steps.
[0014] In another possible implementation, the first signal attenuator is provided with six first adjustment buttons, which are configured to adjust the input power of the signal to be adjusted in steps of 1 dB / step within a range of 0-36 dB.
[0015] In another possible implementation, the second signal attenuator is provided with multiple second adjustment buttons for step-gain adjustment of the amplified signal to be adjusted.
[0016] In another possible implementation, the second signal attenuator is equipped with six second adjustment buttons, configured to adjust the gain of the amplified signal to be adjusted in steps of 1 dB / step within a range of 0-36 dB. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below.
[0018] Figure 1 A schematic diagram of an integrated signal power adjustment device provided in one embodiment of the present invention;
[0019] Figure 2 A schematic diagram of the constituent circuit of the integrated signal power adjustment device provided in this embodiment of the utility model;
[0020] Figure 3 A three-dimensional structural diagram of the internal structure of the integrated signal power adjustment device provided in the embodiment of this utility model;
[0021] Figure 4 This is a top view of the interior of the integrated signal power adjustment device provided by this utility model. Detailed Implementation
[0022] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar modules or modules having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting the present invention.
[0023] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this application means the presence of the stated features, integers, steps, operations, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, modules, components, and / or groups thereof. It should be understood that when we say a module is “connected” or “coupled” to another module, it can be directly connected or coupled to the other module, or there may be an intermediate module. Furthermore, “connected” or “coupled” as used herein can include wireless connection or wireless coupling. The term “and / or” as used herein includes all or any of the modules and all combinations thereof of one or more associated listed items.
[0024] To make the objectives, technical solutions, and advantages of this application clearer, the implementation of this application will be described in further detail below with reference to the accompanying drawings.
[0025] The technical solutions of this application and how they solve the aforementioned technical problems will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.
[0026] Figure 1 The diagram shown is a structural diagram of an integrated signal power adjustment device according to an embodiment of the present invention. Figure 2 The diagram shown is a circuit schematic of an integrated signal power adjustment device provided by this utility model. Figure 1 and Figure 2 As shown, the integrated signal power conditioning device includes: a cavity structure and a first signal attenuator, a low-noise amplifier, a signal power divider, and a second signal attenuator sequentially connected within the cavity structure. The first signal attenuator is configured to receive the signal to be regulated and attenuate the input power of the signal to be regulated, thereby achieving precise control of the signal power.
[0027] A low-noise amplifier is configured to filter and amplify the attenuated signal to be adjusted, ensuring the lowest possible noise level during amplification and guaranteeing signal quality. A second signal attenuator is configured to adjust the gain of the amplified signal to be adjusted, ensuring the stability and adjustability of the output signal. A power divider for the signal to be adjusted is configured to split the signal output from the second signal attenuator into multiple output signals, meeting multi-channel testing requirements and enhancing the scalability of the integrated signal power adjustment device.
[0028] It should be noted that the signal to be adjusted can be the signal output from a signal generator, signal simulation simulator, signal acquisition and playback device, or it can be the signal received through an outdoor antenna. No specific restrictions are imposed here.
[0029] The power conditioning unit also includes a power supply unit connected to a low-noise amplifier and a second signal attenuator. The power supply unit is configured to provide a stable power supply to the low-noise amplifier while maintaining signal transmission, ensuring the normal operation of the integrated signal power conditioning unit.
[0030] In this embodiment of the utility model, see Figure 3 and Figure 4 The power regulation device also includes a power interface 7, which is located at one end of the cavity structure, for example, on the left side of the cavity structure. The power supply unit 3 is located near the power interface 7 and is connected to the power interface 7.
[0031] The power conditioning device also includes multiple DC signal isolators 6 connected to the signal divider 5. The DC signal isolators 6 are configured to isolate DC signals, block interference from external DC signals, and ensure the purity and stability of the output signal. The multiple output signals from the multiple DC signal isolators 6 are output to their respective corresponding objects under test for testing. Preferably, the power conditioning device includes four DC signal isolators 6. The signal divider 5 divides the signal output from the second signal attenuator 4 into four output signals, which are then transmitted to the corresponding objects under test through the four DC signal isolators 6.
[0032] This integrated signal power conditioning device can be used for testing GNSS receivers and communication signals in the 1GHz-3GHz range. If the input signal to be conditioned is a GNSS signal, the multiple output signals from the integrated signal power conditioning device can be used for testing GNSS receivers. If the input signal to be conditioned is a 1GHz-3GHz communication signal, the multiple output signals from the integrated signal power conditioning device can be used for testing 1GHz-3GHz communication signals.
[0033] The integrated signal power adjustment device of this embodiment performs initial power adjustment on the signal to be adjusted through a first signal attenuator at the input end. The signal then enters a low-noise amplifier module for filtering and amplification. The amplified signal is then further adjusted through a second signal attenuator at the output end, and finally distributed into multiple output signals by a signal power divider. A DC signal isolator is used to prevent external interference. This integrated design achieves efficient and convenient signal input power and gain adjustment, precise control of signal power and gain, simplifies the testing process, and improves testing efficiency and accuracy.
[0034] In this embodiment of the utility model, see also Figure 3 and Figure 4 The signal power divider 5 is located at the other end of the cavity structure, for example, on the right side of the cavity structure. The ends of the multiple DC signal isolators 6 furthest from the signal power divider 5 protrude from the other end of the cavity structure. The first signal attenuator 1 and the second signal attenuator 4 are respectively located on both sides of the cavity structure, and the low-noise amplifier 2 is located on the side of the first signal attenuator 1 closest to the center of the cavity structure.
[0035] The first signal attenuator 1 is equipped with multiple first adjustment buttons 8, which are configured to perform step adjustment of the input power of the signal to be adjusted. The first signal attenuator is equipped with 6 first adjustment buttons, which are configured to perform step adjustment of the input power of the signal to be adjusted in steps of 1dB / step within the range of 0-36dB.
[0036] The second signal attenuator is equipped with multiple second adjustment buttons 9 for step-wise gain adjustment of the amplified signal to be adjusted. The second signal attenuator also has six second adjustment buttons configured to adjust the gain of the amplified signal in 1dB / step increments within a range of 0-36dB. Thus, for the input signal to be adjusted, after power and gain adjustment within the integrated signal power adjustment device, 37*37 different power output signals can be provided.
[0037] The integrated signal power adjustment device of this utility model embodiment can be specifically used for testing key parameters of GNSS receiving equipment, such as signal input front-end gain parameter settings, received signal power acceptance range, acquisition sensitivity, tracking sensitivity, and re-acquisition sensitivity after lock-on. It addresses the problems of low efficiency, poor accuracy, and insufficient flexibility in existing technologies. It achieves efficient and convenient signal input power and gain adjustment, reducing operations such as rotation, matching, and soldering of the front-end circuit during debugging and testing. It improves the linearity of signal adjustment and the repeatability of parameters, and is suitable for a wide range of power point verification tests. It significantly improves testing efficiency and data accuracy, ensuring the comprehensiveness and reliability of GNSS receiving equipment in key parameter testing. It offers significant advantages in improving the efficiency, accuracy, comprehensiveness, and flexibility of GNSS receiver testing. Specifically, it includes the following advantages:
[0038] a. Simple operation: The integrated signal power adjustment device is easy to operate. Only two signal power adjustable attenuators (first signal attenuator and second signal attenuator) at the input and output ends need to be adjusted to independently adjust the actual power of the signal to be adjusted and the gain of the internal low-noise amplifier. There is no need for complicated component selection and soldering operations, which greatly simplifies the testing process.
[0039] b. Multifunctional testing capabilities of integrated signal power conditioning device: The integrated signal power conditioning device not only supports independent adjustment of the power of the signal to be adjusted and the internal signal gain, but also has a multi-channel signal output function, which can simultaneously support comparative testing of multiple test objects and meet diverse testing needs.
[0040] c. Precise control mechanism of the tested object: The integrated signal power adjustment device has a built-in adjustable attenuator and low-noise amplifier with a wide frequency bandwidth and precise step control. The linearity of parameter changes is excellent, which ensures the accuracy and high repeatability of the adjustment, and provides a guarantee for the accuracy of the test results.
[0041] d. Highly efficient integrated processing of the tested object: The integrated signal power conditioning device integrates two step-adjustable attenuators, a low-noise signal amplifier, a power supply unit, a signal power divider, and a DC signal isolator. It can be used conveniently with only an external 5V DC power supply. The highly integrated design reduces the dependence on external components and improves the stability and reliability of the module.
[0042] e. Wide compatibility with the tested objects: The integrated signal power conditioning device is designed to be compatible with multiple GNSS systems, such as BeiDou, GPS, GLONASS, and Galileo, supporting test signals in the 1GHz to 3GHz frequency band. Furthermore, the output supports both powered and unpowered modes to meet the needs of different application scenarios, demonstrating broad market applicability.
[0043] In summary, the integrated signal power adjustment device of this utility model embodiment includes a cavity structure and a first signal attenuator, a low-noise amplifier, a signal power divider, and a second signal attenuator sequentially connected in the cavity structure of the object under test. The first signal attenuator of the object under test is configured to receive the signal to be adjusted and attenuate the input power of the signal to be adjusted of the object under test. The low-noise amplifier of the object under test is configured to filter and amplify the attenuated signal to be adjusted of the object under test. The second signal attenuator of the object under test is configured to adjust the gain of the amplified signal to be adjusted of the object under test. The signal power divider of the object under test is configured to divide the signal output by the second signal attenuator of the object under test into multiple output signals and output them. It can quickly select and adjust different front-end signal power and gain adjustment coefficients. The signal attenuation and gain control are not easily affected by external interference and the circuit soldering process of the receiving device.
[0044] The above are only some implementations of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.
Claims
1. An integrated signal power conditioning device, characterized by, The device comprises a cavity structure and sequentially connected first signal attenuator, low noise amplifier, signal power divider and second signal attenuator arranged in the cavity structure; the first signal attenuator is configured to receive a signal to be adjusted and attenuate the input power of the signal to be adjusted; the low noise amplifier is configured to filter and amplify the attenuated signal to be adjusted; the second signal attenuator is configured to perform gain adjustment on the amplified signal to be adjusted; and the signal power divider is configured to divide the signal output by the second signal attenuator into multiple output signals and output.
2. The power conditioning device of claim 1, wherein, The power adjustment device further comprises a power supply unit connected with the low noise amplifier and the second signal attenuator, and the power supply unit is configured to provide stable power supply for the low noise amplifier.
3. The power conditioning apparatus of claim 2, wherein, The power adjustment device further comprises a power supply interface arranged at one end of the cavity structure, and the power supply unit is arranged near the power supply interface and connected with the power supply interface.
4. The power conditioning device of claim 1, wherein, The power adjustment device further comprises a plurality of DC signal isolators connected with the signal power divider, and the DC signal isolators are configured to isolate DC signals.
5. The power conditioning apparatus of claim 4, wherein, The signal power divider is arranged at the other end of the cavity structure, and one end of each of the plurality of DC signal isolators away from the signal power divider protrudes from the other end of the cavity structure.
6. The power conditioning apparatus of claim 5, wherein, The first signal attenuator and the second signal attenuator are arranged at two sides of the cavity structure respectively, and the low noise amplifier is arranged at one side of the first signal attenuator close to the center of the cavity structure.
7. The power conditioning apparatus of claim 1, wherein, A plurality of first adjustment buttons are arranged in the first signal attenuator and configured to step adjust the input power of the signal to be adjusted.
8. The power conditioning apparatus of claim 7, wherein, Six first adjustment buttons are arranged in the first signal attenuator and configured to step adjust the input power of the signal to be adjusted in the range of 0-36dB with a step value of 1dB / step.
9. The power conditioning apparatus of claim 1, wherein, A plurality of second adjustment buttons are arranged in the second signal attenuator and configured to step adjust the gain of the amplified signal to be adjusted.
10. The power conditioning device of claim 9, wherein, Six second adjustment buttons are arranged in the second signal attenuator and configured to step adjust the gain of the amplified signal to be adjusted in the range of 0-36dB with a step value of 1dB / step.