August 27, 2025

The optimal FTTH splitter ratio depends on required signal strength per user. A 1×32 splitter is common, introducing ~17 dB loss, but for longer PON reaches, a 1:16 ratio (~14 dB loss) or cascaded 1:2 + 1:8 splitters may be used to balance reach and user count. Understanding Splitter Ratios When planning a Fiber-to-the-Home (FTTH) […]

After thorough testing, the best overall coaxial connector is the PPC EX6XL, renowned for its gold-plated brass center pin and superior weather resistance, achieving a consistent 1.1 dB signal loss. For a reliable DIY crimp, use a RG6 compression tool to secure the connector, ensuring a solid, waterproof connection for stable HD and internet signals.

In FTTH, S1 and S2 are standardized connector interfaces. The S1 connector is a simpler, low-cost plug for indoor customer premises, while the S2 features a hardened, weather-resistant design for direct outdoor aerial or buried drop installations, ensuring greater durability. Basic FTTH Network Structure Fiber-to-the-Home (FTTH) is a broadband delivery method that uses optical fiber

The core difference lies in power: active couplers require an external power source to amplify signals with gains up to 30 dB, ideal for long distances. Passive couplers are unpowered, simply splitting signals but introducing inherent insertion loss of 3-6 dB per output port. Core Function and Purpose Passive couplers are like simple, unpowered splitters.

Directivity measures a directional coupler’s ability to isolate forward and backward signals, typically ranging from 20 to 40 dB. Higher directivity, like 40 dB, ensures precise measurement of reflected power by minimizing interference from the forward signal, which is critical for accurate VSWR and return loss calculations. ​​What Directivity Means​​ In simple terms, directivity (D)

7 elements of antenna tuning: 1. Azimuth angle accurate to ±1° (calibrated with a compass); 2. Pitch angle adjusted according to frequency band (20-50° for satellite communication); 3. Polarization direction matching signal source (vertical/horizontal); 4. Real-time monitoring of signal strength (＞-70dBm); 5. Avoid obstacles (＞3 meters spacing); 6. Connector torque 0.9N·m; 7. Install a low-noise

Component Selection Choosing Multi-Band Feed Systems Integrating multiple frequency bands into the antenna feed network requires the introduction of a multi-band feeding system, so the choice is to combine different frequency bands. To determine the appropriate feed system, a list of frequency bands owned by the network needs to be compiled, which can be, for

The phase difference between the coupled and mainline signals is critical, typically targeting 90° for ideal quadrature operation. This shift is frequency-dependent and is measured using a vector network analyzer, which precisely quantifies the phase deviation (e.g., ±5°) from the theoretical value across the specified bandwidth, such as 1-2 GHz. What is Phase Difference? In

Ideal directional coupler directivity exceeds 30dB (40dB for precision models), requires precise λ/4 spacing (±0.01mm tolerance), depends on port matching (VSWR <1.05), improves with ferrite loading (2-18GHz range), degrades <0.5dB after 10^9 cycles, and needs -55dB isolation at 1GHz for optimal forward/reflected wave separation. What Directivity Means Directional coupler directivity is one of the most

The coupling ratio of a directional coupler is determined by the gap spacing (0.1-1mm for 3-30dB coupling), conductor geometry (edge-coupled lines yield 6-20dB), substrate permittivity (εᵣ=2.2-10.8 affects coupling ±3dB), frequency (varies ±1dB across 2-18GHz), manufacturing tolerance (±0.5dB for precision CNC-machined units), and load matching (VSWR>2.0 can degrade ratio by 2dB). What Coupling Ratio Means The