default

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

Phased array antennas have four major advantages over traditional antennas: 1. Fast beam scanning speed, up to microseconds; 2. Multi-beam capability, supporting simultaneous multi-target tracking; 3. Higher accuracy, with beam pointing error less than 0.1°; 4. Greater reliability, modular design reduces the risk of single-point failure. Beam Switching Speed Last year when SpaceX Starlink satellites

Design considerations for waveguide and microstrip lines: 1. Loss: waveguide loss is less than 0.05dB/m, while microstrip loss is about 0.5dB/m. 2. Frequency response: waveguide is suitable for frequency bands above GHz, while microstrip is mostly used in the MHz to GHz range. 3. Size: microstrip is more compact, while waveguide is large in size

Five key factors for selecting a waveguide manufacturer: 1. Precision, ensure tolerance ≤ 0.02mm; 2. Material quality, preferably high conductive alloys; 3. Cost-effectiveness, compare quotations, the difference can be as high as 20%; 4. Production capacity, the monthly production capacity should exceed 1,000 pieces; 5. Customer support, the response time is within 24 hours. How

Three ways to reduce antenna manufacturing costs: 1. Use PCB technology for mass production, and the cost of each piece can be reduced to less than $5; 2. Use FR4 to replace high-frequency materials, reducing costs by about 40%; 3. Optimize the design to reduce metal usage, such as using a hollow structure, saving up

Five tips for optimizing waveguide performance: 1. Control manufacturing tolerance (±0.005mm); 2. Select low-loss materials (such as silver-plated copper tubes); 3. Optimize the bending radius (≥2 times the wavelength); 4. Use high-performance sealing flanges (VSWR<1.2); 5. Regular maintenance and cleaning (avoid oxidation that causes insertion loss>0.5dB). Internal Wall Polishing Process During APSTAR-6D in-orbit diagnostics last