Mega Industries manufactures waveguide circulators for use in RF applications. We consider circulator development in most high power waveguide sizes. Monitor couplers are provided upon request. Typical material is Aluminum Housing (A356 T51, RoHS passivated), Steel (Zinc passivated), Copper cooling channels. For insertion loss and other specifications, see the table below. We design circulator configurations for all power levels, in frequencies ranging from 56MHz to 45GHz.
Our designs place emphasis on the selection and bias point of ferrite material to minimize insertion loss and maximize isolation at the frequency, bandwidth and power level of interest. The design and power handling capability of a circulator is determined by the sum of the forward and reflected power, the latter being a result of any mismatch present at the output of the device.
View standard circulator 3D CAD models and capabilities on the Microwave Techniques website.
Circulator & Duplexer Data Sheets
High Power WR2300 UHF
WR1800 UHF
WR1800 350 kW
WR1150 UHF
WR975, 915 MHz, 75kW
WR650 L-Band Four Port Differential Phase Shift Circulator
WR650 L-Band Dual Junction Duplexer
WR284 S-Band Dual Junction Duplexer for Weather Radar Systems
WR284 S-Band
WR187 C-Band
Custom RF Circulator Design
Custom modifications for operation at lower RF power levels are possible upon request. We consider development in all coaxial and waveguide sizes. Additionally, we engineer and fabricate high power circulators with 6-1/8″ coaxial inputs.
Mega developed a proprietary rack-mounted temperature control unit that automatically fine-tunes circulators based on thermal feedback from the cooling circuit.
Electrical Specifications for WR975 Circulator:
| Return Loss | Insertion Loss |
| >25dB @ 915, >20db in band | <0.1 dB @ 915, <0.15 in band |
| Frequency | Power | Isolation |
| 915 +/- 10 MHz | 75kW CW (forward and reflected) | >25dB @ 915, >20dB in band |
Mechanical Specifications:
| Interface | Cooling | Weight |
| WR975 CPRF | 2gpm/min flow at 25-30 degrees C, < 100 psg | 40.267 lb. |
Our waveguide circulators are manufactured to precise tolerances. We accurately calculate to provide optimum VSWR and maximum power handling capabilities.
Our 2020 merger with Ferrite Microwave Technologies has expanded our product line to cover all industry configurations for standard, as well as mating to custom applications. The applications for circulators include accelerators, radar systems, communication systems and industrial.
Circulators, Isolators and Duplexers Questions?
Check out our partners: Ferrite Components & Integrated Assemblies.
