April 11, 2025

To accurately measure waveguide flange sizes, use ​​precision calipers​​ (resolution 0.01mm) to verify ​​flange outer diameter​​ (WR-90 standard: 58.17±0.05mm) and ​​bolt circle diameter​​ (47.55±0.03mm for UG-39/U). Check ​​flatness​​ with optical flats (<0.02mm deviation across surface) and measure ​​groove depth​​ (3.18±0.05mm for choke flanges) with depth micrometers. For ​​alignment​​, use go/no-go gauges to test pin-slot tolerance […]

To test waveguide connector performance, measure ​​insertion loss​​ (should be <0.1 dB for Ka-band) and ​​VSWR​​ (target <1.25:1) using a vector network analyzer. Conduct ​​durability tests​​ (500+ mating cycles) while monitoring ​​contact resistance​​ (must stay below 5mΩ). Verify ​​EMI shielding​​ effectiveness (>90dB attenuation at 40GHz) and ​​thermal stability​​ (-55°C to +125°C operating range). For millimeter-wave