A multi-functional portable spectrum analyzer

Abstract

The utility model discloses a kind of multifunctional portable spectrum analyzer, comprising: reconfigurable radio frequency front end, integrated adaptive impedance matching network and programmable filter group, support 9kHz-8GHz frequency range;Multi-domain signal processing engine, using ARM+FPGA+GPU heterogeneous computing architecture, realize ≥40MHz real-time bandwidth;Modular extension interface, support millimeter wave front end, hardware extension of VNA and EMC test module;Intelligent diagnosis system, built-in fault knowledge base and AR auxiliary function.Integrating adaptive impedance matching network, high-precision calibration source (±0.3dB) and AR auxiliary function, solve the problem that traditional portable device function is single, performance is limited.I have IP54 protection level, 8 hours endurance and-155dBm sensitivity, suitable for communication maintenance, industrial internet of things and other field test scenes.

Description

Technical Field

[0001] This utility model belongs to the field of electronic measuring instrument technology, specifically relating to a multifunctional portable spectrum analyzer that integrates radio frequency analysis, intelligent diagnosis, and modular expansion. Background Technology

[0002] Traditional portable spectrum analyzers have the following drawbacks:

[0003] 1. Limited functionality: Most devices only support spectrum analysis and lack extended functions such as network analysis and EMC testing;

[0004] 2. Performance limitations: Due to size constraints, sensitivity (typically >-130dBm) and real-time bandwidth (<10MHz) are lower than desktop devices;

[0005] 3. Complex operation: Requires manual parameter configuration and lacks intelligent assistance functions;

[0006] 4. Insufficient battery life: Typical battery life is only 2-3 hours, and frequent battery replacements are required for outdoor use.

[0007] Existing improvement solutions such as solar charging (patent CN14251963) or OLED display (patent CN4759160) only solve local problems and do not achieve system-level optimization. Summary of the Invention

[0008] The purpose of this invention is to provide a multifunctional portable spectrum analyzer to solve the problems existing in the prior art.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: a multifunctional portable spectrum analyzer, comprising:

[0010] Reconfigurable RF front end, integrating adaptive impedance matching network and programmable filter bank, supporting frequency range of 9kHz-8GHz;

[0011] The multi-domain signal processing engine adopts an ARM+FPGA+GPU heterogeneous computing architecture to achieve a real-time bandwidth of ≥40MHz;

[0012] Modular expansion interface, supporting hardware expansion of millimeter wave front-end, VNA and EMC test modules;

[0013] The intelligent diagnostic system has a built-in fault knowledge base and AR-assisted functions.

[0014] Furthermore, the RF front end includes a hybrid architecture of superheterodyne and direct sampling, with a built-in power calibration source with ±0.3dB accuracy.

[0015] Furthermore, the processing engine implements FFT acceleration through FPGA, with a processing latency of <50ms, and supports simultaneous display of spectrum, waterfall plot, and heat map.

[0016] Furthermore, the expansion interface is compatible with the USB4 / Thunderbolt3 protocol and provides a Python API to call VNA functions.

[0017] Furthermore, it also includes a 7-inch OLED touchscreen, a magnesium alloy frame, and a solar charging module;

[0018] The spectrum analyzer also includes a PWM charging controller and a lithium battery;

[0019] The OLED touchscreen has a brightness of ≥1000 nits and the magnesium alloy frame has IP54 protection.

[0020] Furthermore, the intelligent diagnostic system identifies the device under test through a camera and overlays AR operation guidance.

[0021] Furthermore, the attenuator of the RF front-end module includes a first capacitor C1, an inductor L1, and an operational amplifier A1; the low-pass filter of the RF front-end module includes resistors R1-R6 and capacitors C2-C3; the RF front-end module also includes an analog-to-digital converter.

[0022] Furthermore, the integrated adaptive impedance matching network and programmable filter bank support dynamic switching between superheterodyne / direct sampling modes.

[0023] Furthermore, the attenuator, low-pass filter, analog-to-digital converter, and control chip are connected in sequence. The control chip is connected to the RF front-end, touch screen, storage unit, and wireless transmission module, respectively.

[0024] Furthermore, the extended interface supports millimeter-wave front-end, VNA, and EMC test modules.

[0025] By adopting the above technical solution, this utility model has the following beneficial effects:

[0026] With a sensitivity of -155dBm, it supports 30+ modulation standards including 5G NR / WiFi 6;

[0027] Intelligent power-saving management enables 8 hours of battery life; optional solar charging module.

[0028] It features a 7-inch high-brightness touchscreen (1000 nits) and a physical knob design, supporting operation with gloves;

[0029] Magnesium alloy frame + IP54 protection rating, passed 1-meter drop test.

[0030] AR diagnostics reduces on-site operation time by 70%. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the system architecture (RF front-end, processing engine, and expansion interface connections).

[0033] Figure 2 This is a schematic diagram of an RF front-end system (including attenuators, low-pass filters, and analog-to-digital converters).

[0034] Figure 3 Schematic diagram of the radio frequency front-end system;

[0035] Figure 4 Schematic diagram of intelligent diagnostic system;

[0036] Figure 5 Schematic diagram of modular expansion interface structure. Detailed Implementation

[0037] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown. A multifunctional portable spectrum analyzer includes:

[0039] Reconfigurable RF front end, integrating adaptive impedance matching network and programmable filter bank, supporting frequency range of 9kHz-8GHz;

[0040] The multi-domain signal processing engine adopts an ARM+FPGA+GPU heterogeneous computing architecture to achieve a real-time bandwidth of ≥40MHz;

[0041] Modular expansion interface, supporting hardware expansion of millimeter wave front-end, VNA and EMC test modules;

[0042] The intelligent diagnostic system has a built-in fault knowledge base and AR-assisted functions.

[0043] In one embodiment, the RF front end includes a hybrid architecture of superheterodyne and direct sampling, with a built-in power calibration source with ±0.3dB accuracy.

[0044] In one embodiment, the processing engine implements FFT acceleration via FPGA, with a processing latency of <50ms, and supports simultaneous display of spectrum, waterfall plot, and heatmap.

[0045] In one embodiment, the expansion interface is compatible with the USB4 / Thunderbolt3 protocol and provides a Python API to call VNA functions.

[0046] In one embodiment, it also includes a 7-inch OLED touchscreen, a magnesium alloy frame, and a solar charging module;

[0047] The spectrum analyzer also includes a PWM charging controller and a lithium battery;

[0048] The OLED touchscreen has a brightness of ≥1000 nits and the magnesium alloy frame has IP54 protection.

[0049] In one embodiment, the intelligent diagnostic system identifies the device under test through a camera and overlays AR operation guidance.

[0050] In one embodiment, the attenuator of the RF front-end module includes a first capacitor C1, an inductor L1, and an operational amplifier A1; the low-pass filter of the RF front-end module includes resistors R1-R6 and capacitors C2-C3; the RF front-end module also includes an analog-to-digital converter.

[0051] In one embodiment, the integrated adaptive impedance matching network and programmable filter bank support dynamic switching between superheterodyne / direct sampling modes.

[0052] In one embodiment, the attenuator, low-pass filter, analog-to-digital converter, and control chip are connected in sequence. The control chip is connected to the RF front-end, touch screen, storage unit, and wireless transmission module, respectively.

[0053] In one embodiment, the extended interface supports millimeter-wave front-end, VNA, and EMC test modules.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multifunctional portable spectrum analyzer, characterized in that, include: Reconfigurable RF front end, integrating adaptive impedance matching network and programmable filter bank, supporting frequency range of 9kHz-8GHz; The multi-domain signal processing engine adopts an ARM+FPGA+GPU heterogeneous computing architecture to achieve a real-time bandwidth of ≥40MHz; Modular expansion interface, supporting hardware expansion of millimeter wave front-end, VNA and EMC test modules; The intelligent diagnostic system has a built-in fault knowledge base and AR-assisted functions.

2. The spectrum analyzer according to claim 1, characterized in that, The RF front end includes a hybrid architecture of superheterodyne and direct sampling, with a built-in power calibration source with ±0.3dB accuracy.

3. The spectrum analyzer according to claim 1, characterized in that, The processing engine uses FPGA to accelerate FFT, with a processing latency of <50ms, and supports simultaneous display of spectrum, waterfall plot, and heat map.

4. The spectrum analyzer according to claim 1, characterized in that, The expansion interface is compatible with the USB4 / Thunderbolt3 protocol and provides a Python API to call VNA functions.

5. The spectrum analyzer according to claim 1, characterized in that, It also includes a 7-inch OLED touchscreen, a magnesium alloy frame, and a solar charging module; the spectrum analyzer also includes a PWM charging controller and a lithium battery. The OLED touchscreen has a brightness of ≥1000 nits and the magnesium alloy frame has IP54 protection.

6. The spectrum analyzer according to claim 1, characterized in that, The intelligent diagnostic system identifies the device under test through a camera and overlays AR operation guidance.

7. The spectrum analyzer according to claim 2, characterized in that, The attenuator of the radio frequency front end includes a first capacitor C1, an inductor L1, and an operational amplifier A1; the low-pass filter of the radio frequency front end includes resistors R1-R6 and capacitors C2-C3; the radio frequency front end also includes an analog-to-digital converter.

8. The spectrum analyzer according to claim 1, characterized in that, The integrated adaptive impedance matching network and programmable filter bank support dynamic switching between superheterodyne and direct sampling modes.

9. The spectrum analyzer according to claim 7, characterized in that, The attenuator, low-pass filter, analog-to-digital converter, and control chip are connected in sequence. The control chip is connected to the RF front-end, touch screen, storage unit, and wireless transmission module, respectively.

10. The spectrum analyzer according to claim 1, characterized in that, The extended interface supports millimeter-wave front-end, VNA, and EMC test modules.

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