RF Isolators and Circulators

Features & Benefits

These high-performance components are highly compact, usually mass minimised and ruggedized. Most types are optimised to minimise their electro-magnetic shielding. Contact our product experts to discuss your specific system requirements and custom configurations to meet your needs.
Generally

Optimised electrical performance over the assigned band.
Mitigation of externally radiated or susceptibility to magnetic fields by design.
EMC shielded by design (only applies to devices whose interfaces are coaxial or waveguide).
High power variants subjected to in house qualification and or rigorous thermal and mechanical analysis.
Space qualified devices subjected to in-house high-power testing as required (capability extends over 0.2 to 22GHz)
Field replaceable connectors used wherever practical.

Primary operating band	Coaxial (connector selected based on frequency and operating power)	Stripline (drop-in)	Microstrip (including co-planar waveguide)	SMT	Multifunction assemblies and iso-adapters
UHF	✓✓	✓	✗	✗	✓
L-Band	✓✓✓✓	✓✓✓✓	✗	✓✓✓	✓✓
S-Band	✓✓✓✓	✓✓✓✓	✓✓	✓✓✓	✓✓
C-Band	✓✓✓✓	✓✓✓✓	✓✓✓✓	✓✓✓	✓✓
X-Band	✓✓✓✓	✓✓✓✓	✓✓✓✓	✓✓✓	✓✓
Ku-Band	✓✓	✓✓✓✓	✓✓✓✓	✗	✓✓
K-Band	✓✓	✓✓	✓✓✓✓	✗	✓
Ka-Band	✓✓	✓✓	✓✓	✗	✓
Q-Band	✗	✗	✗	✗	✗
V-Band	✗	✗	✗	✗	✗
E-Band	✗	✗	✗	✗	✗

Primary operating band	Waveguide	Low power isolator or circulator	High power isolator	High power circulator	Multifunction assemblies and iso-adapters
UHF	✗	✗	✗	✗	✗
L-Band	WR650	✓	✓	✓	✓✓✓
S-Band	WR340, WR284, & WR229	✓✓	✓	✓	✓✓✓
C-Band	WR187, WR159 & WR137	✓✓	✓✓✓✓	✓✓✓✓	✓✓✓
X-Band	WR112 & WR90	✓✓	✓✓✓✓	✓✓✓✓	✓✓✓✓
Ku-Band	WR75 & WR62	✓✓	✓✓✓✓	✓✓✓✓	✓✓✓
K-Band	WR51 & WR42	✓✓	✓✓✓✓	✓✓✓✓	✓
Ka-Band	WR34 & WR28	✓✓	✓✓✓✓	✓✓✓✓	✓✓
Q-Band	WR22	✓✓	✗	✗	✗
V-Band	WR19	✓✓	✗	✗	✗
E-Band	WR12	✗	✓✓✓	✓	✓

Smiths Interconnect a substantial range of ferrite devices supplied as components and integrated with other passive components such as couplers and RF filters. Products marked by “✓✓” table have space heritage. Devices marked “✓✓✓” indicate that the devices are capable of handling high power and those marked “✓✓✓✓” indicate that the devices are also space qualified. For an up-to-date picture of the space heritage and capability or a copy of the most recent EQSR contact the factory or your local representative.