June 7, 2025

A poorly optimized feeder system can waste up to ​​30% of transmitted power​​ due to mismatches and losses. Start by ​​keeping VSWR below 1.5:1​​—every 0.1 increase adds ​​1-2% loss​​. Use ​​low-loss cables (e.g., LDF4-50A)​​ over standard RG-213 to cut attenuation by ​​50% at 2GHz​​. Proper ​​connector torque (e.g., 25 in-lb for N-type)​​ prevents moisture ingress, […]

Passive antennas, which rely solely on external signal strength, typically deliver gains between 2 dBi and 10 dBi, making them ideal for short-range, low-interference environments. Active antennas, on the other hand, integrate built-in amplifiers (LNAs) to boost weak signals, offering gains up to 30 dBi or higher—critical for long-range or high-noise scenarios like satellite comms

​An antenna feedhorn is a crucial component in RF and microwave systems, directing signals between the antenna and receiver/transmitter. Used in 80% of satellite dishes and radar systems, feedhorns ensure minimal signal loss (typically <0.5 dB) and optimal frequency targeting. This article explores its design and three key applications—satellite communication, radar, and radio astronomy—with practical

Measuring antenna gain accurately is crucial for optimizing wireless performance. Studies show that a 3dB gain improvement can double signal range in ideal conditions. Whether you’re testing a Wi-Fi router or a cellular antenna, following these 5 practical steps ensures reliable results without expensive equipment. Learn how to measure gain like a pro—no lab required!

Five key indicators for comparing waveguide suppliers: 1) frequency range (such as 26.5–40 GHz); 2) insertion loss (≤0.2 dB/m); 3) standing wave ratio (VSWR≤1.2); 4) material (such as aluminum alloy 6061-T6); 5) delivery cycle (≤4 weeks). Pricing Transparency During APSTAR-7 satellite commissioning last year, an 83% sudden price hike for Ku-band waveguides delayed ground station

The five-step process for waveguide installation is as follows: 1) Check the flatness of the flange surface (<0.05mm); 2) Clean the contact surface and apply conductive paste; 3) Align the waveguide opening with an error of ≤0.1mm; 4) Tighten the bolts evenly (torque 2.5N·m); 5) Test the standing wave ratio (VSWR<1.3). Flange Alignment Techniques During

Four cost-reduction technologies for phased array antenna design: 1) Use a multi-layer PCB integrated feed network to reduce interconnect components; 2) Use low-cost LCP materials (dielectric constant 2.9±0.1); 3) Optimize the unit spacing to 0.5λ~0.7λ to reduce the number of array elements; 4) Introduce digital beamforming to reduce the number of RF links. Unit Simplification

Six major criteria for selecting phased array antenna manufacturers: 1) frequency coverage (e.g. 2–40 GHz); 2) gain accuracy (within ±1 dB); 3) beam switching speed (<1 μs); 4) sidelobe suppression capability (<-30 dB); 5) environmental adaptability (-40 to +85°C); 6) support for customized interfaces (e.g. SPI, LVDS) Phased Array Lessons Last summer’s Houston ground station

There are three major performance differences between waveguide and coaxial cable: 1) Frequency range: waveguide is suitable for high frequency bands above 30GHz, while coaxial cable is commonly used below 18GHz; 2) Loss: coaxial cable has greater loss at high frequencies (such as RG-405 reaching 0.5dB/m at 10GHz), and waveguide has lower loss (<0.1dB/m); 3)

Three effective methods for testing waveguide components include: 1) using a vector network analyzer (VNA) to measure S parameters, ensuring that the frequency range covers 26.5 GHz to 40 GHz; 2) performing a standing wave ratio (VSWR) test with a value of less than 1.5:1; and 3) implementing a power handling capability test, applying a