Design

Waveguide Circulators

Dolph Microwave offers a standard product line of waveguide circulators ranging from WR10 to WR 137. For more information feel free to call us and discuss your needs with one of our sales engineers.

Ordering Guide of Waveguide Circulators
Flange type: Multiple types available - see Dolph Microwave Flanges page.
Finish: Corrosion protection plus black/grey top coat.

Datasheet of Waveguide Circulators
Model No Freq Range (GHz) Operating Bandwidth (MHz) VSWR (Max) IL (dB) (Max) Isolation (dB) (Min) WG Type Flange Material
IEC EIA
DH-70WCIC 5.38-8.17 700 1.20 0.3 20 R70 WR137 FDP/FDM Al/Cu
DH-84WCIC 6.57-9.99 700 1.20 0.3 20 R84 WR112 FBP/FBM/FBE Al/Cu
DH-100WCIC 8.20-12.40 800 1.20 0.3 20 R100 WR90 FBP/FBM/FBE Al/Cu
DH-120WCIC 9.84-15.0 1000 1.20 0.3 20 R120 WR75 FBP/FBM/FBE Al/Cu
DH-140WCIC 11.9-18.0 1000 1.20 0.3 20 R140 WR62 FBP/FBM/FBE Al/Cu
DH-180WCIC 14.5-22.0 1000 1.20 0.3 20 R180 WR51 FBP/FBM/FBE Al/Cu
DH-220WCIC 17.6-26.7 2000 1.20 0.3 20 R220 WR42 FBP/FBM/FBE Al/Cu
DH-260WCIC 21.7-33.0 2000 1.20 0.3 20 R260 WR34 FBP/FBM/FBE Al/Cu
DH-320WCIC 26.3-40.0 2000 1.20 0.3 20 R320 WR28 FBP/FBM/FBE Al/Cu
DH-400WCIC 32.9-50.1 2000 1.30 0.6 20 R400 WR22 FUGP Cu
DH-500WCIC 39.2-59.6 2000 1.30 0.6 20 R500 WR19 FUGP Cu
DH-620WCIC 49.8-75.8 2000 1.30 0.6 20 R620 WR15 FUGP Cu
DH-740WCIC 60.5-91.9 2000 1.30 0.8 20 R740 WR12 FUGP Cu
DH-900WCIC 73.8-112 2000 1.30 1.0 20 R900 WR10 FUGP Cu

*Indicates Model Number. See Ordering Information for complete part number.
** Nominal Attenuation Accuracy: ± 0.5dB Frequency Sensitivity: ± 0.7dB.

Inquiry Elements for Waveguide Circulator
The three main factors of circulator are "Insertion loss (forward loss)", "Isolation (reverse direction loss)" and VSWR.
Since the circulator has a frequency characteristic, the specific frequency range are also needed when you look for this components.
At last, the power handling are also necesary since the colling method needs to take into consideration if high power needed.

Application of Waveguide Circulators
A waveguide isolator is a modified circulator having one port terminated with a matched impedance. Both the devices are typically used for preventing high powered transmitter outputs interfering with sensitive receiver circuitry. It efficiently does so by separating received signals at the input of the antenna from the transmitter's signals. In another way you can understand isolator is a cirulator with a termination.
https://www.dolphmw.com/products/waveguide-circulators/