August 11, 2025

​Waveguides (e.g., WR-90 for 8.2-12.4GHz) outperform coaxial cables at high frequencies (>2GHz) with lower loss (0.1dB/m vs. 0.5dB/m), higher power handling (kW range), and better shielding. They enable precise microwave signal transmission in radar (e.g., X-band) and satellite systems by minimizing dispersion and EMI. ​What is a Microwave​​ Microwaves are a type of ​​electromagnetic wave​​ […]

To choose MMW antenna frequency bands (24GHz-100GHz), consider application needs (e.g., 28GHz for 5G, 60GHz WiGig), propagation loss (60GHz suffers 16dB/km oxygen absorption), antenna size (higher frequencies allow smaller arrays), regulatory constraints (FCC limits 57-71GHz), and hardware availability (24/28GHz chips are more mature). Test with VNA for impedance matching (SWR<2) and verify beamwidth via pattern