The properties of circulators and isolators depend on the choice of the ferrite.
Teledyne Microwave UK’s design knowledge is built on decades of working with ferrite materials and a deep understanding of the interaction between an electromagnetic wave and magnetization within each ferrite type, contributing to optimum system performance.
Waveguide circulators and isolators have the best electrical characteristics and can sometimes be specified with insertion loss down to less than 0.2 dB. The insertion loss for microstrip and coaxial circulators and isolators will typically rise to between 0.5 and 1.0 dB. Note that the wider the bandwidth, the poorer the insertion loss and isolation.
In operation, even low loss devices can present a thermal management challenge. Ferrite properties change at elevated
operating temperatures and their performance degrades accordingly.
Designing for efficient heat dissipation from the ferrite is essential to ensure stable temperature and performance. Teledyne Microwave UK achieves excellent thermal stability through design techniques that maximize the ferrite material's thermal dissipation.
