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Microstrip Isolators and Circulators

Microstrip isolators and circulators are broadband structures that offer low profile wire-bondable interfaces with broad band operation and low mass. Together this makes microstrip devices ideal for use in hybrids for space and terrestrial AESA applications

Multifunctional Assembly Board

Features & Benefits

Smiths Interconnect has a unique heritage having supplied over 700k microstrip isolators and circulators for space and terrestrial based radar and industrial telecommunications applications. Smiths Interconnect's capability extends from 2.0 GHz to 32 GHz with unconditionally linear products that include single junction isolators and circulators & a limited number of dual junction isolators and duplexer.

Key advantages

  • Tuneless broadband structures
  • Ultra low mass of any ferrite isolator or circulator
  • Smiths Interconnect devices are made using processes and from materials with outstanding heritage
  • All devices are unconditionally linear
  • Space qualified and suitable for hybrid applications
  • Exceptional RF performance
  • Our microstrip circulators are REACH and ROHS compliant. Isolators may contain BeO terminations. Contact us to find out if a specific part is compliant with REACH & RoHS).
Operating Band [GHz] Insertion Loss [dB max] Return Loss [dB min] Isolation Loss [dB min] Device Notes
2.3 to 2.5 0.30 21.0 21.0 Isolator Space Heritage
2.7 to 3.3 0.30 21.0 21.0 Isolator Space Heritage
3.4 to 4.2 0.30 21.0 - Circulator Space Heritage
5.0 to 6.0 0.30 21.0 21.0 Isolator  
5.2 to 5.9 0.30 21.0 - Circulator Space Heritage
5.7 to 7.1 0.30 21.0 21.0 Isolator Space Heritage
5.8 to 6.5 0.30 21.0 21.0 Isolator Space Heritage
7.2 to 8.5 0.30 21.0 21.0 Isolator Space Heritage
8.0 to 12.0 0.30 15.0 15.0 Isolator Space Heritage
0.30 15.0 - Circulator Space Heritage
8.5 to 10.5 0.50 19.0 - Circulator Space Heritage
8.5 to 9.6 0.30 21.0 - Circulator  
8.9 to 10.7 0.30 21.0 21.0 Isolator  
0.30 21.0 - Circulator Space Heritage
9.0 to 10.0 0.30 21.0 21.0 Isolator  
0.30 21.0 - Circulator  
9.5 to 11.5 0.30 21.0 21.0 Circulator  
10.7 to 12.8 0.40 20.0 20.0 Isolator Space Heritage
12.7 to 14.5 0.40 20.0 20.0 Isolator Space Heritage
17.7 to 22.0 0.60 18.0 18.0 Isolator Space Heritage
18.3 to 22.2 0.40 20.0 20.0 Isolator Space Heritage
24.0 to 27.0 0.50 19.0 19.0 Isolator Space Heritage
27.5 to 30.0 0.80 16.0 16.0 Isolator  

Documents & Literature

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