Stripline isolators are planar two-port non-reciprocal devices fabricated with a sandwich stripline structure. They deliver excellent forward transmission with high reverse isolation in an extremely compact, lightweight form factor, ideal for direct integration into dense RF circuit boards and modules.
The stripline isolator is a planar passive non-reciprocal device that exploits ferrite gyromagnetic properties within a flat, layered stripline structure. It is designed for seamless integration into surface-mount or drop-in applications, offering a superior balance of isolation, insertion loss, and miniaturization for modern high-density RF designs.
Working Principle
The device employs a Y-junction stripline circuit embedded with a ferrite puck, biased by a permanent magnet above and below the plane. Similar to a circulator, one port of the junction is terminated with a precision resistive load. Forward signals are routed from the input to the output port with very low loss. Reverse signals are directed to the terminated port and absorbed, creating a highly effective one-way RF path. The planar stripline configuration ensures a low profile and broad frequency bandwidth relative to its size.
Key Features
Ultra-Miniature Profile: Thin planar design enables direct PCB mounting or drop-in assembly.
High Performance in Compact Size: Delivers excellent isolation (>18 dB typical) and low insertion loss (<0.5 dB typical) across the design band.
Broadband Adaptability: Suitable for narrowband to wideband applications up to Ku-band and beyond.
Passive & Maintenance-Free: No external power or active components required.
Cost-Effective Mass Production: Ideal for high-volume commercial wireless, telemetry, and array antenna systems.
Specifications
