The coaxial broadband circulator is a three-port passive non-reciprocal ferrite device that provides unidirectional signal flow (1→2, 2→3, 3→1) with high reverse isolation over an exceptionally wide frequency range from 0.056 GHz to 40 GHz. It combines ultra-wideband coverage, low insertion loss, high power handling, and easy integration, making it an ideal routing and protection component for multi-band RF systems.
he coaxial broadband circulator is a three-port passive non-reciprocal RF device based on the ferrite gyromagnetic effect. It adopts a coaxial cavity structure and broadband matching design, enabling unidirectional signal circulation (1→2, 2→3, 3→1) and high reverse isolation across an extremely wide frequency range. It combines four core advantages — ultra-wideband coverage, low insertion loss, high power handling, and easy integration — serving as a key routing and protection component in multi-band RF systems.
Inside the device, a coaxial Y-junction contains ferrite material at its center, with an external permanent magnet providing a constant biasing magnetic field. When an RF signal enters the junction, it decomposes into two counter-rotating circularly polarized waves. Under the action of the broadband matching network, these waves add in phase at the forward port and cancel each other at the reverse port, thus achieving stable unidirectional transmission over a wide band without frequency-dependent variation.
Key Features
Ultra-wide frequency coverage: Covers 0.056 GHz – 40 GHz
Low insertion loss + High isolation
High power handling
Stable and reliable coaxial structure
Standard interfaces for easy integration
Specifications
