Core Positioning: The "Frequency Adaptation Manager" and "Interference Isolation Barrier" for 5G Base Stations

　　In 5G Sub-6GHz mainstream frequency bands (700MHz N28, 2.6GHz N41, 3.5GHz N78, 4.9GHz N79) and 5G-A ultra-broadband scenarios, base stations need to overcome four core challenges: difficulty in multi-band synergy (compatibility of high and low-frequency signals), high requirements for high-power bearing (macro base station peak power exceeding 2000W), significant Massive MIMO channel interference (crosstalk in 64T64R multi-antenna systems), and severe outdoor environmental erosion (heavy rain, high temperature, salt fog). The RF circulator/isolator dedicated for 5G base stations, through high-power directional transmission and multi-band integrated design, achieves "low-loss amplification of transmitted signals, interference-free return of received signals, and precise isolation of multi-channel interference", building a "stable transmission defense line" for the 5G base station RF link and ensuring the optimal balance of network coverage range, concurrent capacity, and signal quality.

　　Four Core Advantages to Meet the Rigorous Requirements of 5G Base Stations

　　1. Seamless Multi-Band Compatibility: Covering the Entire 5G Spectrum

　　Precise Multi-Band Adaptation: Fully covers domestic (China) mainstream 5G frequency bands such as 700MHz (N28), 2.6GHz (N41), 3.5GHz (N78), and 4.9GHz (N79), and is compatible with 4G LTE frequency bands (1.8GHz, 2.1GHz) to support the collaborative operation of 5G/4G dual-mode base stations. Voltage Standing Wave Ratio (VSWR) ≤ 1.2, in-band ripple ≤ 1.5dB, meeting the frequency band compatibility requirements of the Ministry of Industry and Information Technology (MIIT, China).

　　5G-A Ultra-Broadband Expansion: Reserves adaptation capability for millimeter-wave (FR2) frequency bands, supporting the synergy between Sub-6GHz and 24GHz millimeter-wave signals. It is compatible with Nokia Bell Labs' 5G-A three-carrier aggregation solution (e.g., N41+N79 frequency combination) to ensure downlink peak rate transmission of 5.8Gbps.

　　Impedance Matching Optimization: Adopts a 50Ω standard impedance design, achieving perfect matching with base station Remote Radio Units (RRUs) and antenna elements. Signal reflection loss ≤ -20dB, avoiding power waste and signal distortion.

　　2. Stable High-Power Bearing: Adapting to Base Station Power Level Requirements

　　Industry-Leading Power Capacity: The macro base station model supports an average power of 500W and a peak power of 2500W (antenna feeder side port), while the micro base station model supports an average power of 50W and a peak power of 200W, meeting the power needs of different coverage scenarios. It also has an over-power tolerance of 3000W (1ms instantaneous overload) to eliminate the risk of high-power burnout.

　　Ultra-Low Loss Energy-Saving Design: Insertion loss ≤ 0.4dB across the entire Sub-6GHz band (typical value 0.3dB for N78 band), reducing loss by 30% compared to conventional devices. When used with macro base stations, the single-station transmit power compensation is reduced by 15%, saving over 200 kWh of electricity annually and meeting operators' "green network construction" needs.

　　Extreme Suppression of Passive Intermodulation (PIM): Static third-order intermodulation (PIM) ≤ -155dBc (43dBm×2 input), fifth-order intermodulation ≤ -160dBc. It effectively suppresses multi-carrier signal mixing interference, ensures signal purity of Massive MIMO systems, and reduces user data bit error rate (BER ≤ 1×10⁻¹⁰).

　　3. Massive MIMO Collaborative Design: Adapting to Multi-Channel Architecture

　　Multi-Channel Integrated Packaging: Supports 8/16/32-channel integrated packaging. The volume of the integrated module is 40% smaller than the combination of single-channel devices, adapting to the compact layout of the RF front-end of 64T64R macro base stations. The phase difference between channels ≤ 1°, ensuring the accuracy of beamforming (signal pointing error ≤ 0.5°).

　　Lightweight Structural Optimization: Uses aluminum nitride ceramic core + aluminum alloy heat dissipation housing. The weight of a single-channel device ≤ 5g, and the weight of the integrated module is 25% lower than that of traditional solutions, adapting to the "miniaturized and concealed" deployment needs of micro base stations (e.g., street lamp pole micro stations, building-distributed base stations).

　　High-Speed Signal Synchronization: Supports 5ms single-cycle switching of TDD (Time Division Duplex) frame structure, with transceiving conversion delay ≤ 100ns, adapting to 5G low-latency services (e.g., industrial control, Internet of Vehicles) and complying with the 3GPP TS 38.101-1 base station RF standard.

　　4. Telecom-Grade Outdoor Reliability: Withstanding All-Scenario Environments

　　Extreme Climate Adaptation: Operating temperature range covers -30℃~70℃ (a customized version for high-temperature scenarios supports long-term operation at 100℃). It passes the -40℃~85℃ thermal shock test (1000 cycles), adapting to outdoor environments with severe cold in northern China and extreme heat in southern China.

　　Strict Protection Upgrade: Protection level reaches IP67 (dustproof and waterproof), with 1000-hour salt fog resistance (complying with GB/T 2423.17 – China National Standard: Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods - Test Ka: Salt Mist) and 2000-hour UV aging resistance. It adapts to harsh deployment scenarios such as coastal areas and plateau deserts in China, with a device lifespan exceeding 10⁵ hours (MTBF).

　　Enhanced Mechanical Stability: Resists wind vibration (10~500Hz, 100m/s²) and seismic shock (1500m/s², 2ms), passing the mechanical reliability test for base station equipment (complying with YD/T 2828 – China Telecommunication Industry Standard: Mechanical Reliability Requirements for Telecommunication Equipment) to ensure uninterrupted links under extreme conditions such as typhoons and earthquakes.

　　Empowering All Types of 5G Base Stations: Key Support from "Wide Coverage" to "5G-A Ultra-Broadband"

　　Macro Base Station Field: Provides multi-channel isolation for 3.5GHz N78 band 64T64R macro base stations, with isolation ≥ 35dB to suppress antenna crosstalk. Combined with beamforming technology, it enables concurrent access of over 1000 users within a 500m coverage radius, with downlink rate attenuation ≤ 5%, complying with MIIT (China) 5G base station coverage standards.

　　Micro Base Station Field: Adapts to 2.6GHz N41 band miniaturized micro base stations, adopting a low-cost integrated solution (20% cost reduction compared to traditional devices). It supports high-density user access within a 100m coverage radius (e.g., shopping malls, office buildings in China) and ensures a single-user downlink rate ≥ 1Gbps.

　　5G-A Ultra-Broadband Field: Supports the N41+N79 three-carrier aggregation solution. Combined with 1024QAM high-order modulation technology, it achieves a downlink peak rate of 5.8Gbps, and the uplink reaches 640Mbps through UL 2Tx Switching technology, adapting to large-bandwidth services such as ultra-high-definition video and AR/VR.

　　Dual-Mode Base Station Field: Compatible with signal switching between 4G LTE 1.8GHz band and 5G N78 band, with isolation ≥ 40dB to avoid cross-standard interference and ensure seamless switching between 4G/5G users (switching delay ≤ 50ms).

　　Cooperation Guarantee: 5G Base Station-Level Supply Chain Service System

　　Comprehensive Compliance Certifications: The product complies with 3GPP TS 38.101 and MIIT (China) 5G RF technical requirements, and has obtained CE, FCC, and RoHS 2.0 certifications. The production line has passed IATF16949 (automotive-grade) and ISO 9001 dual-system certifications, supporting operators' bulk procurement needs (monthly production capacity exceeding 1.5 million units) with a delivery cycle ≤ 3 weeks.

　　Full-Link Test Support: Provides free samples and a complete set of test reports including "multi-band power bearing test, passive intermodulation test, high-low temperature cycle test, and Massive MIMO joint debugging", assisting customers in completing base station network access certification (e.g., China Mobile 5G base station device procurement standards).

　　Customized Technical Services: Provides high-power water-cooled packaging solutions for macro base stations, 16-channel integrated modules for micro base stations, and millimeter-wave band adaptation (24GHz FR2) for 5G-A scenarios. It also keeps pace with 6G base station technology evolution and provides advanced device R&D support.

　　Contact us now to obtain a customized link stability solution for 5G base stations, ensuring every signal transmission is low-loss, anti-interference, and highly reliable!

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