The Waveguide Probe Coupler is a microwave and millimeter-wave passive component with metal probes as the core coupling unit. By inserting metal probes into the waveguide interior, it captures electric or magnetic field energy of propagating electromagnetic waves to realize directional signal coupling, power sampling and signal transmission.
Conventional waveguide probe couplers suffer from large coupling fluctuation across wide frequency bands. By optimizing the structure of coupling through-holes, such as cascading multiple coaxial transmission lines with different characteristic impedances, the coupling flatness can be greatly improved, achieving stable coupling performance over an ultra-wide frequency range.
Waveguide probe couplers introduce low loss during signal transmission, which effectively maintains signal power integrity and measurement accuracy.
Featuring a compact and straightforward design, a standard waveguide probe coupler mainly consists of two parts: a waveguide cavity and a coaxial connector. This configuration facilitates mass production, system integration and on-site assembly.
