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Products > Passive and Ferrite Waveguide Components

Circulators and Isolators

Features


  • 26.5-220 GHz operating frequency
  • Narrow band and full band types
  • Low insertion losses
  • High isolation
  • Compact size

Applications

  • Laboratory measurement and test equipment
  • Junction of some parts of sub-systems
  • Matching of several waveguide components
  • Base of multi-junction devices, injection-locked amplifier
Description  

26.5-220GHz Circulators and Isolators are ferrite waveguide components. There are two kinds of the products operating within narrow frequency band (1-4 GHz) and full waveguide band. Junction circulators and isolators are narrow band. Wideband devices base on Faraday rotation effect. Used in many waveguide schemes for junction their parts and for matching different components and protecting against reflected mm-wave power.

Standard line of ELVA-1’s circulators CR-XX/CF/BW series provide low insertion losses and high isolation for all three ports. They have operation frequency band up to 4 GHz. Better performances of the circulators can be provided within narrow frequency band.

The IS-XX/CF/BW isolators realized by terminating of one port of the junction circulators. Ideally suit for suppression of reflected power coming from any waveguide devices with high VSWR.

Full band isolators IF-XX have good performances within full waveguide range. Mainly used in wideband sources or receivers for suppression mm-wave power propagating in one fixed direction. Have small insertion losses.

Specifications

Narrow band circulators CR-XX/CF/BW series:

Model Number CR-XX/CF/BW
Central frequency: Fixed from 26.5-110 GHz Fixed from 110-170 GHz
Bandwidth: 2.5 GHz 0.5 GHz 2.5 GHz 0.5 GHz
Insertion losses:1 to 2, 2 to 3, 3 to 1 (min) 0.7 dB 0.5 dB 1 dB 0.7 dB
Isolation: 2 to 1, 3 to 2, 1 to 3 (min) 23 dB 30 dB 20 dB 25 dB
VSWR (typ) 1.2 1.3
     

Narrow band isolators IS-XX/CF/BW series:

Model Number IS-XX/CF/BW
Central frequency: Fixed from 26.5-110 GHz Fixed from 110-170 GHz
Bandwidth: 2.5 GHz 0.5 GHz 2.5 GHz 0.5 GHz
Insertion losses:1 to 2, 2 to 3, 3 to 1 (min) 0.7 dB 0.5 dB 1 dB 0.7 dB
Isolation: 2 to 1, 3 to 2, 1 to 3 (min) 23 dB 30 dB 20 dB 25 dB
VSWR (typ) 1.2 1.3

            Note: CR/IS-05 circulators/isolators can be produced upon special reques

Typical data of circulators/isolators presented in the plots below.

Full band Faraday Isolators IF-XX series:

Model Number IF-15 IF-12 IF-10 IF-08 IF-06
Operating bandwidth, GHz 50-75 60-90 75-110 90-140 110-170
Insertion losses 1.7 dB 1.8 dB 2.2 dB 2.7 dB 3.3 dB
Isolation 25 dB 25 dB 25 dB 25 dB 25 dB
VSWR 1.3:1 1.3:1 1.4:1 1.4:1 1.5:1
Waveguide WR-15 WR-12 WR-10 WR-08 WR-06
Flange UG-385/U UG-387/U UG-387/U-M UG-387/U-M UG-387/U-M

           Note: IF-28/22/19/05 Faraday isolators can be produced upon special request

Typical data of Faraday isolators presented in the plots below.

How to order

 Specify Model Number CR/IS/IF-XX/CF/BW, where

XX  – number of waveguide standard (Ex. 10 for WR-10 and 06 for WR-06)

CF  - central frequency (GHz), nothing if full band

BW– or operating range (GHz), nothing if full band

 

Examples

IS-10/94/1( W-band isolator, WR-10, Central frequency 94 GHz, Bandwidth 1 GHz)

CR-06/140/2( D-band circulator, WR-06, Central frequency 140 GHz, Bandwidth 2 GHz)

IF-06( D-band Faraday isolator, WR-06, full band 110-170GHz)