PMI model CIR-15G18R2G-20-SFF is a circulator that operates over the frequency range 15.0 to 18.2 GHz. It has an insertion loss of 0.4 dB and an isolation of 20 dB. It is outfitted with SMA female connectors. 

Product Specifications

General Parameters:
Status: Preliminary
Frequency Range: 15.0 to 18.2 GHz
Frequency Min: 15.0 GHz
Frequency Max: 18.2 GHz
Insertion Loss: 0.4 dB Max
Isolation: 20 dB Min
VSWR: 1.25:1 Max
Forward Power: 60 WATTS Typ
Reverse Power: 60 WATTS Typ
Connectors: SMA Female
Environmental Ratings:
Temperature: 0°C TO +60 °C (OPERATING)
-5 °C TO +65 °C (STORAGE)
Humidity: MIL-STD-202, METHOD 103B COND. B
Shock: MIL-STD-202, METHOD 213B COND. B
Vibration: MIL-STD-202, METHOD 204D COND. B
Altitude: MIL-STD-202, METHOD 105C COND. B
Temperature Cycle: MIL-STD-202, METHOD 107D COND. A