I. Satellite System Adaptation Structure and Installation Design

　　1. Body Structure and Interface Features

　　Compact and Weather-Resistant Design: The gold-plated brass housing measures only 18mm × 32mm (diameter × length) and weighs ≤15g, about the size of a coin. It easily fits into confined spaces, such as satellite antenna LNB outputs and unused splitter ports. The housing is passivated and coated with a PTFE corrosion-resistant coating. It has undergone a 48-hour salt spray test and shows no oxidation spots, making it suitable for outdoor installation.

　　F-Type Male Connector Precision: The connector features a 2.1mm diameter beryllium copper inner conductor and a stepped thread structure. When mated with the F-Type female connector on a satellite coaxial cable, a tight fit is achieved with a torque of 5-8N·m. The thread clearance is ≤0.05mm, eliminating the risk of loose connections. The connector's outer ring features anti-slip knurling, allowing for easy manual installation without the need for specialized tools. 2. Satellite System Installation Compatibility

　　Multi-location Installation Compatibility:

　　Antenna End: Threads directly into the spare output port of a 2GHz satellite antenna. The housing mates seamlessly with the antenna's metal shell, providing a ground shield and reducing signal leakage.

　　Splitter End: Adapters fit into the unused port of an 8-way satellite signal splitter. Once plugged in, it achieves a 75Ω impedance match with the splitter, preventing signal reflections caused by open ports.

　　Indoor Terminal: Connects to the satellite receiver's spare port via an F-type adapter. Its compact size minimizes cabinet space.

　　Wiring Collaborative Design: The connector is only 32mm long, ensuring it maintains the natural routing of the coaxial cable. It works with RG-6/U cables (6.15mm outer diameter) commonly used in satellite systems and can be routed directly through cable troughs, eliminating the need for additional installation space. II. Core Performance and Satellite Signal Optimization

　　1. 2GHz Band Impedance Matching Performance

　　High-Frequency Signal Stability: A built-in 75Ω precision load resistor, utilizing thin-film resistor technology, achieves impedance deviation ≤±1Ω at 2GHz, a reflection coefficient ≤-20dB, and a VSWR ≤1.2, effectively suppressing signal reflection interference. Measured signal power attenuation of 2GHz satellite signals after passing through the terminator is ≤0.2dB, far exceeding the industry standard requirement of ≤0.5dB.

　　Full-Band Consistency: Within the 1GHz-2.5GHz frequency range (covering the satellite Ku-band), insertion loss fluctuation is ≤0.1dB, with no peak attenuation. This ensures stable transmission of multiple services, including satellite TV and data transmission, and prevents channel dropout and pixelation. 2. DC Blocking Core Function

　　Isolation Performance: Built-in ceramic capacitors provide DC blocking with a blocking voltage range of 0-60V DC and a leakage current of ≤1μA. This effectively isolates the satellite LNB's 13/18V supply voltage, preventing LNB power supply anomalies caused by DC leakage from unused ports. Under a 30V DC power supply, the DC voltage drop across the terminator was measured to be ≥58V, completely isolating the DC loop.

　　High-Frequency Signal Penetration: The DC blocking capacitors utilize NP0 material with a capacitive reactance of ≤0.01Ω at 2GHz, providing virtually no obstruction to high-frequency satellite signals. Signal transmission phase shift is ≤0.5°, ensuring phase alignment of satellite signals and minimizing demodulation accuracy at the receiver.

　　3. Electromagnetic Shielding and Anti-Interference Performance

　　Multi-layer Shielding: The outer shell utilizes a double-layer, gold-plated brass design with an inner signal shield and an outer ground layer. Shielding effectiveness is ≥85dB (2GHz band), effectively blocking external electromagnetic interference (such as mobile phone base station signals and household appliance radiation) from affecting satellite signals. Internal Circuit Protection: Resistors and capacitors are soldered using SMD technology, with solder joints covered with insulating sealant. This eliminates the risk of desoldering within the -40°C to 85°C operating temperature range. Combined with the PCB's microstrip design, this reduces internal high-frequency signal loss and crosstalk. III. 2GHz Satellite System Multi-Scenario Performance

　　1. Core Scenario: Ensuring Satellite Signal Stability

　　Single-Antenna Multi-Terminal System: After installing this terminator on two unused ports in a four-channel satellite signal distribution system, the 2GHz signal-to-noise ratio at the main receiver was measured to improve by 3dB, and the bit error rate was reduced from 10⁻⁷ to 10⁻⁹. The satellite TV screen was flicker-free and lag-free, and the data transmission rate remained stable at 15Mbps (theoretical rate 18Mbps).

　　Long-Term Operational Stability: After 30 days of continuous operation at an outdoor satellite ground station, 12 hours per day in direct sunlight (surface temperature ≤ 65°C), the terminator's standing wave ratio (VSWR) changed by ≤0.05, with no degradation in DC blocking performance and no system restarts due to impedance mismatch.

　　2. Special Scenario: DC Isolation and Equipment Protection

　　LNB Power Supply Protection: When the satellite antenna LNB When using dual-polarization power supply (13V/18V switchable), installing a terminator in an unused port prevents the supply voltage from leaking through the open port, thus preventing overvoltage damage to the LNB's internal circuitry. When the terminator was disconnected, a residual voltage of 12.8V was detected on the unused port. After installation, this residual voltage dropped to 0V.

　　Thunderstorm Protection: When used with the satellite system's surge protector, the terminator's DC blocking function isolates the DC surge from surges, reducing surge current damage to the backend receiver. In a simulated 10kV lightning strike test, the terminator exhibited no breakdown, demonstrating normal operation of the backend equipment.

　　3. Extended Scenario: Small Satellite Communication Station Adaptation

　　Portable Satellite Terminal: In a 2GHz portable satellite communication station, the terminator is installed in the backup link between the antenna and modem. Its lightweight and compact size ensure portability, allowing installation in 30 seconds during deployment, reducing signal establishment time by 2 seconds compared to without the terminator.

　　Multi-band Compatibility Testing: Tests were conducted on 1.5GHz (C-band), 2GHz (Ku-band), and 1.5GHz (C-band). The terminator can be used alternately in satellite systems with different frequency bands, maintaining stable impedance matching and DC blocking performance. This allows for adaption to satellite signals in different frequency bands without replacing the terminator, reducing system maintenance costs.

　　IV. Maintenance and Lifespan Assurance

　　1. Daily Maintenance Key Points

　　Installation Inspection: Check the connector threads for looseness quarterly. Wipe dust and moisture from the connector surface with a dry cloth to prevent poor contact caused by oxidation. For terminators installed outdoors, apply a small amount of silicone grease to the threads to enhance sealing and corrosion resistance.

　　Performance Testing: Use a vector network analyzer to regularly test the 2GHz band's standing wave ratio. If the value exceeds 1.5, the terminator must be replaced to avoid affecting the signal quality of the entire satellite system. The recommended testing interval is 6 months for outdoor use and 12 months for indoor use.

　　2. Lifespan and Reliability Assurance

　　Durability Specifications: Connector insertion and removal life ≥ 500 times, with no thread stripping after 500 tightening cycles; internal resistor and capacitor life ≥ 100,000 hours, and stable operation for 12 consecutive days in a 2GHz satellite system. Over 100 years of experience.

　　Safety Certifications and Compatibility: RoHS-compliant, CE- and FCC-certified, compatible with mainstream satellite system equipment (such as DirecTV and ChinaSat 9 receivers). Fully compatible with 75Ω coaxial cables such as RG-6 and RG-11, eliminating the risk of device conflicts.

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