vlg Signal Amplifier

　　I. Core Product Categories (Focusing on Weak Signal Scenarios)

　　VLG signal amplifiers are centered on "full-band coverage + scenario-based enhancement," addressing three main needs: consumer-grade weak signal improvement, industrial-grade stable transmission, and outdoor/vehicle signal coverage. They are divided into three categories:

　　Consumer-grade Miniature Signal Amplifiers

　　Form Features: Desktop (≤15cm×10cm×5cm), wall-mounted (≤3cm thickness), supports plug-and-play, no professional installation required; some models integrate a built-in antenna (from the same source as VLG's miniature PCB antenna), external models can be paired with FPC flexible antennas/small glue stick antennas.

　　Frequency Bands Covered: Compatible with GSM (850/900/1800/1900MHz), 4G LTE (700/800/900/1800/2100/2600MHz), WiFi 5/6 (2.4/5GHz), supports simultaneous amplification of multiple frequency bands (e.g., mobile phone signal + home WiFi). Synergistic Enhancement)

　　Key Parameters: Gain 20-30dB (single band), Noise Figure ≤2.5dB (low noise ensures signal purity), Output Power ≤23dBm (compliant with global radio power standards), Operating Temperature -10℃~60℃, Power Consumption ≤15W (compatible with household socket power supply)

　　Typical Applications: Improvement of weak signals in homes (e.g., basements, high-rise corners for mobile/WiFi signal enhancement), WiFi coverage improvement in small offices (solving signal dead spots in conference rooms and corridors), 4G to WiFi signal enhancement in guesthouses/small shops (enhancing guest internet experience)

　　Industrial-Grade High-Reliability Signal Amplifier

　　Form Factor: Rack-mounted (1U standard chassis, compatible with industrial cabinets), wall-mounted (scratch-resistant aluminum alloy shell), supports redundant power input (12V/24V DC), external interface compatible with N-type/SMA-type connectors (can be used with VLG industrial-grade fiberglass antennas)

　　Coverage Bands: Industrial dedicated bands (4G LTE 3.5GHz, GSM 900MHz) + Customized frequency bands (e.g., dedicated communication bands for mines/oil fields), supporting carrier aggregation (CA) signal amplification (compatible with high-speed transmission of industrial 4G modules)

　　Key parameters: Gain 30-40dB (dual-band synchronous amplification), shielding effectiveness ≥70dB (aluminum-magnesium alloy shielding cover + double-layer copper braided mesh, resistant to industrial electromagnetic interference), operating temperature -40℃~85℃, vibration resistance (10-2000Hz, acceleration 15G), MTBF ≥100,000 hours

　　Typical applications: Signal gap filling in industrial workshops (e.g., 4G signal enhancement for CNC machine tools and AGV robots to avoid data transmission interruptions), remote monitoring in mines/oil fields (amplifying sensor feedback signals, covering a range of 500-1000 meters), smart grid base station extension (enhancing communication signals between substations and terminal meters)

　　Outdoor/vehicle-mounted rugged signal amplifier

　　Form features: Outdoor model (IP68 protective housing, weight ≤1kg, supports pole mounting/ Magnetic mounting), vehicle-mounted (concealed installation on roof/trunk, compatible with 12V car power supply), integrated surge protection module (compliant with IEC 61000-4-5 standard, resistant to induced lightning)

　　Coverage bands: Full band compatible (GSM+4G+5G Sub-6G), with key optimizations to the 900MHz (GSM) and 2.5GHz (4G) low-frequency bands (enhanced signal penetration, suitable for remote areas)

　　Key parameters: Gain 25-35dB, output power ≤27dBm (meets vehicle/outdoor long-distance coverage needs), protection rating IP67 (outdoor)/IP6K9K (vehicle-mounted, high-pressure water washing resistant), salt spray resistance (1000 hours, 5% NaCl concentration), wind resistance (wind speed ≤50m/s)

　　Typical applications: Rural/mountainous outdoor signal coverage (paired with VLG high-gain rubber rod antenna to achieve 4G signal coverage within a 500-meter radius), truck/ Agricultural machinery vehicle-mounted signal enhancement (solving 4G connection drops in remote areas during long-distance transportation), temporary signal deployment for emergency communication vehicles (such as signal amplification for temporary base stations at disaster sites)

　　II. Core Technical Features (Based on VLG Communication Hardware Collaboration Capabilities)

　　Full-band compatibility and collaborative enhancement

　　Multi-standard adaptation: Through "software-defined band" technology, it is compatible with GSM (2G), 4G LTE, 5G Sub-6G, and WiFi 5/6 signals. It can dynamically switch amplified bands according to the scenario (e.g., prioritizing GSM/4G amplification in rural areas and 5G/WiFi amplification in urban areas) without requiring hardware replacement.

　　Antenna-amplifier collaboration: Deeply adapted to various VLG antennas (e.g., consumer-grade miniature PCB antennas, industrial-grade fiberglass antennas). Through the superposition of "antenna gain + amplifier gain," the signal-to-noise ratio in weak signal areas is improved by 40-60% (e.g., 4G signal in a basement is enhanced from -110dBm to -...). 80dBm (meets call and data transmission requirements)

　　Intelligent Signal Adjustment and Anti-interference

　　Adaptive Gain Control (AGC): Real-time detection of input signal strength, automatically adjusting the amplification factor (avoiding distortion caused by strong signal overload, and maximizing gain output for weak signals), adjustment response time ≤100ms, output signal stability ±0.5dB

　　Interference Filtering Technology: Built-in "frequency band filtering + digital signal processing (DSP)" dual-stage interference suppression, filtering noise interference from industrial equipment (such as inverters, motors) and consumer equipment (such as microwave ovens, routers), interference suppression ratio ≥50dB, ensuring the purity of the amplified signal

　　Scenario-Based Reliability Design

　　Low Power Consumption and Energy Saving: Consumer-grade models support "automatic power reduction when not in use" (power consumption drops below 5W when WiFi is not connected), industrial-grade models support "sleep-wake" mode (amplifier sleeps when there is no sensor data, wake-up response ≤500ms), and automotive-grade models use "ignition start/ignition shut-off". Interconnection (Avoiding Power Loss)

　　Adaptability to Extreme Environments: Industrial-grade models use wide-temperature components (-40℃~85℃), outdoor models use waterproof and breathable membranes (balancing internal and external air pressure to prevent condensation), and automotive models use oil-resistant and corrosion-resistant PCBs (compliant with ISO 19642 standards), ensuring long-term stable operation in different scenarios.

　　III. Typical Application Scenarios (Combined with the VLG Product Ecosystem)

　　Consumer-Grade Weak Signal Improvement Scenarios

　　Solution Combination: VLG Consumer-Grade Miniature Amplifier (Desktop Model) + Built-in PCB WiFi Antenna + External Glue Stick 4G Antenna

　　Application Logic: High-rise home users receive 4G signals from rooftop base stations through the amplifier, amplify them, and transmit them to the indoor WiFi module, simultaneously enhancing WiFi coverage (solving signal dead zones on balconies and in bathrooms). 4G download speeds increase from 5Mbps to 20Mbps, and WiFi coverage radius expands from 10 meters to 25 meters.

　　Core Advantages: Plug and play (no professional debugging required), multi-band simultaneous amplification (improves both mobile phone and WiFi performance simultaneously), low power consumption (daily power consumption ≤0.36 kW). (Degree)

　　Industrial Workshop Signal Protection Scenario

　　Solution Combination: VLG Industrial-Grade Rack-Mounted Amplifier + 16-Unit 4G Array Antenna + Industrial FPC Wiring Harness

　　Application Logic: In a smart factory workshop, the amplifier receives signals from a distant base station and uses the array antenna to directionally cover the AGV's travel path (within a 500-meter range), solving the signal shielding problem caused by metal factory buildings. The AGV robot's 4G disconnection rate is reduced from 15% to 0.5%, and the data transmission latency is stable at ≤20ms.

　　Core Advantages: High anti-interference (shielding effectiveness ≥70dB), wide temperature operation (-40℃~85℃), redundant power supply (avoiding production stoppage due to power outages)

　　Rural Outdoor Emergency Coverage Scenario

　　Solution Combination: VLG Outdoor IP68 Amplifier + 22dBi High-Gain 4G Antenna + Solar Power Module

　　Application Logic: In remote rural areas, a solar-powered amplifier receives 4G signals from a base station 5 kilometers away, amplifies them, and covers 3 surrounding villages (within a 1-kilometer radius), supporting simultaneous use by 100+ villagers. 4G network, which can be used as an emergency broadcast signal transmission channel in emergencies (such as GSM signal amplification during floods).

　　Core advantages: IP68 protection (unaffected by heavy rain/sandstorms), UV resistance (performance degradation ≤5% after 2000 hours of sun exposure), full frequency band compatibility (GSM+4G, ensuring voice and data transmission).

　　IV. Customized Services and Compliance Certification

　　Customized Process

　　Requirement Integration: Define the scenario (consumer/industrial/outdoor), weak signal pain points (coverage range/frequency band requirements), environmental parameters (temperature/protection/power supply), and coordinating hardware (VLG antenna/module model).

　　Solution Design: 3D signal simulation (predicting amplified coverage and interference avoidance), hardware selection (gain/power/interface customization), and software frequency band configuration (such as locking dedicated frequency bands for mining).

　　Sample Verification: Sample production completed within 2 weeks, testing gain stability, interference suppression ratio, and extreme environment tolerance, supporting joint debugging with VLG antennas/modules (such as with Quectel 4G). Module test transmission rate); Mass production and delivery: Mass production cycle of 3-4 weeks, providing an integrated kit of "amplifier + antenna + installation accessories", supporting remote operation and maintenance (viewing amplifier working status via APP)

　　Compliance and Certification

　　Radio Certification: Certified by SRRC (China), FCC ID (USA), CE-RED (EU), and TELEC (Japan), compliant with 3GPP TS 38.104 (5G) and TS 36.104 (4G) signal amplification standards;

　　Industry Standards: Industrial grade compliant with IEC 61000-6-2 (industrial electromagnetic compatibility), automotive grade compliant with ISO 16750-3 (automotive electronic environment), outdoor grade compliant with IEC 60529 (IP68 protection);

　　Environmental Compliance: All materials comply with RoHS 2.0 and REACH regulations, industrial grade models are halogen-free certified (IEC 61249-2-21), and SGS test reports are available.

　　Benchmark Cooperation Cases

　　Consumer Sector: Providing customized WiFi for domestic smart home manufacturers Signal amplifiers, paired with VLG miniature antennas, solve WiFi coverage dead zones in duplex apartments, with over 100,000 units deployed in batches.

　　Industrial sector: Industrial-grade amplifiers are provided for ZTE industrial gateways, achieving 1000-meter 4G signal coverage in mining scenarios, increasing sensor data transmission success rate from 85% to 99.8%.

　　Outdoor sector: IP68-rated outdoor amplifiers are provided to a provincial emergency management department for rural emergency communications. When 4G base stations are damaged, the amplifiers extend GSM signals, ensuring voice dispatch.

　　V. Selection Recommendations (Matching Core Parameters Based on Scenarios)

　　Consumer-grade weak signal scenarios (home/small office)

　　Recommended type: Consumer-grade miniature desktop/wall-mounted amplifier (multi-band compatible)

　　Key considerations: Gain 20-25dB (meets 50-100 meter coverage), noise figure ≤2.5dB (clean signal), plug and play (no professional installation required), paired with VLG FPC Flexible Antenna (concealed installation, does not affect decoration)

　　Industrial-grade stable transmission scenarios (workshop/mine)

　　Recommended type: Industrial-grade rack-mount amplifier (dual-band synchronous amplification)

　　Key considerations: Gain 35-40dB (long-distance coverage), shielding effectiveness ≥70dB (anti-industrial interference), wide temperature range -40℃~85℃, redundant power supply (avoid power outages), paired with VLG industrial-grade fiberglass antenna (dust/oil resistant)

　　Outdoor/vehicle-mounted blind spot coverage scenarios (rural/truck)

　　Recommended type: Outdoor IP68-rated/vehicle-mounted rugged amplifier (full-band compatibility)

　　Key considerations: Gain 30-35dB (enhances weak signals), IP67/IP68 protection (outdoor/vehicle environments), surge protection module (outdoor safety), compatible with 12V/24V power supply, paired with VLG high-gain rubber rod antenna (directional coverage, improved efficiency)