August 21, 2025

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 […]

In 2024, the top waveguide horn antenna suppliers include ​​Millimeter Wave Products Inc.​​ (up to 325 GHz), ​​Pasternack​​ (custom designs <1.5:1 VSWR), ​​Flann Microwave​​ (precision-machined up to 110 GHz), ​​RFspin​​ (low-loss <0.1 dB), ​​A-Info​​ (broadband 18-220 GHz), and ​​Fairview Microwave​​ (ISO 9001-certified, 10-40 dB gain). Key Players in Waveguide Horns Waveguide horn antennas are critical