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Stripline Isolators and Circulators

The range of available designs continues to expand in number with applications for terrestrial and space based products seeing renewed interest. Drop-in idevices are available from a huge number of potential suppliers. 

Features & Benefits

The device opposite has been been designed to meet the emerging demand for SMT devices. This C-Band circulator has been designed for pick and place, solder re-flow integration and incorporates design features, some obvious and some not, required to support this integration approach.

Our latest SMT designs are the result of more than 10 years experience in the design and qualification of similar devices and based on having supplied over 50,000 ferrite junction for AESA applications for land and  naval applications.

The use of Stripline ferrite isolators has increased over the years and the trends towards ever higher operating power, frequency and the desire for lower cost integration is relentless. This has resulted in Smiths Interconnect supplying more drop-ins for space applications in the past 2 years that it has in the preceding 10 years as renewed interest in LEO & MEO S-band communication and GNSS services has driven increased demand.

Narrow Band Drop-In Isolators

Frequency [GHz] Isolation [dB min] INS Loss [dB max] VSWR max Operating Temperature [ºC] Package Code
0.420 – 0.450 20 0.50 1.25:1 0 to +50 M1
0.980 – 1.080 21 0.50 1.20:1 -25 to +85 F1
1.030 – 1.090 20 0.50 1.25:1 -25 to +85 D1
1.080 – 1.195 20 0.50 1.25:1 -25 to +85 F1
1.200 – 1.400 18 0.60 1.30:1 -25 to +85 F1
1.435 – 1.535 18 0.50 1.20:1 -25 to +85 D1
1.525 – 1.559 21 0.30 1.20:1 -25 to +85 F1
1.960 – 2.170 17 0.60 1.35:1 -25 to +85 D1
2.100 – 2.300 18 0.50 1.30:1 -25 to +85 D1
2.200 – 2.300 20 0.50 1.25:1 -25 to +85 D1
2.500 – 2.700 20 0.50 1.25:1 -25 to +85 D1
2.700 – 2.900 20 0.60 1.25:1 -25 to +85 D1
2.800 – 3.300 15 0.75 1.40:1 -25 to +85 D1
3.000 – 3.600 18 0.50 1.30:1 -25 to +85 E1
3.400 – 3.700 20 0.50 1.20:1 -25 to +85 R1
3.700 – 4.200 20 0.40 1.25:1 -25 to +85 D1
3.700 – 4.200 18 0.60 1.30:1 -25 to +85 E2
4.200 – 4.400 20 0.50 1.25:1 -25 to +85 A1
4.200 – 4.400 20 0.40 1.25:1 -25 to +85 E1
4.500 – 4.700 19 0.50 1.25:1 -25 to +85 R1
4.750 – 5.250 21 0.50 1.20:1 -25 to +85 A1
5.150 – 5.650 18 0.40 1.30:1 -25 to +85 E1
5.400 – 5.900 20 0.50 1.25:1 -25 to +85 E1
5.845 – 6.425 21 0.50 1.20:1 -25 to +85 R1
5.900 – 6.400 19 0.50 1.25:1 -25 to +85 E1
6.900 – 7.600 18 0.60 1.30:1 -25 to +85 D1
7.000 – 7.500 19 0.50 1.25:1 -25 to +85 E1
7.000 – 7.700 21 0.50 1.20:1 -25 to +85 A2
7.100 – 7.700 20 0.50 1.25:1 -25 to +85 R1
7.125 – 7.875 18 0.60 1.30:1 -25 to +85 E1
7.500 – 8.400 17 0.60 1.35:1 -25 to +85 E1
7.800 – 8.600 19 0.50 1.25:1 -25 to +85 R1
8.000 – 8.500 16 0.60 1.40:1 -25 to +85 E1
8.600 – 9.600 20 0.50 1.20:1 -25 to +85 A2
9.000 – 10.500 19 0.50 1.25:1 -25 to +85 R2
9.200 – 9.900 19 0.50 1.25:1 -25 to +85 A2
9.500 – 10.500 20 0.50 1.25:1 -25 to +85 A2
9.700 – 11.200 19 0.50 1.25:1 -25 to +85 R2
10.400 – 11.300 21 0.50 1.20:1 -25 to +85 R2
10.700 – 11.950 20 0.50 1.25:1 -25 to +85 R2
11.500 – 12.950 19 0.50 1.25:1 -25 to +85 A2
12.100 – 12.800 19 0.50 1.25:1 -25 to +85 E1
12.500 – 14.100 20 0.50 1.25:1 -25 to +85 R2
12.750 – 14.500 20 0.70 1.25:1 -25 to +85 R2
12.750 – 14.500 21 0.50 1.20:1 -25 to +85 R2
17.300 – 18.100 18 0.60 1.30:1 -25 to +85 R2
19.550 – 20.350 17 0.60 1.30:1 -25 to +85 A2

Broad Band Drop-In Isolators

Frequency [GHz] Isolation [dB min] INS Loss [dB max] VSWR max Operating Temperature [ºC] Package Code
0.960 – 1.215 18 0.50 1.30:1 -25 to +85 M1
2.000 – 4.000 16 0.60 1.40:1 -10 to +70 C1
3.000 – 6.000 16 0.60 1.40:1 -25 to +85 C1
3.400 to 4.200 18 0.60 1.30:1 -25 to +85 E1
4.000 to 8.000 16 0.60 1.40:1 -25 to +85 D2
5.00o to 10.000 16 0.60 1.40:1 -25 to +85 D2
7.400 – 9.400 19 0.50 1.25:1 -25 to +85 A2
8.000 – 12.000 16 0.70 1.45:1 -25 to +85 E2
8.000 – 12.000 17 0.60 1.40:1 -25 to +85 E2
8.000 – 16.000 14 0.80 1.50:1 -25 to +85 E2
12.000 – 18.000 17 0.90 1.50:1 -25 to +85 A2
12.000 – 18.000 17 0.70 1.50:1 -25 to +85 E3

Narrow Band Drop-In Circulators

Frequency [GHz] Isolation [dB min] INS Loss [dB max]] VSWR max Operating Temperature [ºC] Package Code
0.420 – 0.450 20 0.50 1.30:1 0 to +50 M1
0.980 – 1.080 21 0.50 1.20:1 -25 to +85 F1
1.030 – 1.090 20 0.50 1.25:1 -25 to +85 D1
1.200 – 1.400 17 0.60 1.35:1 -25 to +85 F1
1.435 – 1.535 18 0.50 1.20:1 -25 to +85 D1
2.200 – 2.300 20 0.50 1.25:1 -25 to +85 D1
2.500 – 2.700 18 0.50 1.30:1 -25 to +85 D1
2.700 – 2900 20 0.40 1.25:1 -25 to +85 D1
2.900 – 3.100 21 0.50 1.20:1 -25 to +85 D1
3.000 – 3.600 18 0.60 1.30:1 -25 to +85 E1
3.600 – 4.200 19 0.50 1.25:1 -25 to +85 R1
3.700 – 4.200 20 0.40 1.25:1 -25 to +85 D1
3.700 – 4.200 18 0.60 1.30:1 -25 to +85 E2
4.200 – 4.400 18 0.40 1.30:1 -25 to +85 E1
5.400 – 5.900 18 0.50 1.30:1 -25 to +85 E1
5.900 – 6.400 19 0.50 1.25:1 -25 to +85 E1
6.600 – 7.300 19 0.50 1.25:1 -25 to +85 R1
8.000 – 8.500 19 0.50 1.25:1 -25 to +85 R1
10.750 – 12.800 20 0.50 1.25:1 -25 to +85 R2
12.700 – 13.500 21 0.50 1.20:1 -25 to +85 R2
17.200 – 17.900 19 0.50 1.25:1 -25 to +85 R2

Broad Band Drop-In Circulators

Frequency [GHz] Isolator [dB min] INS Loss [dB max] VSWR max Operating Temperature [ºC] Package Code
0.960 – 1.215 19 0.50 1.30:1 -25 to +85 M1
2.000 – 4.000 16 0.60 1.40:1 -10 to +70 C1
3.000 – 6.000 16 0.60 1.40:1 -25 to +85 C1
4.000 – 8.000 16 0.60 1.40:1 -25 to +85 D1
5.000 – 10.000 15 0.60 1.45:1 -20 to +70 D2
8.000 – 12.000 16 0.60 1.40:1 -25 to +85 E2
8.000 – 16.000 14 0.80 1.50:1 -25 to +85 E2
12.000 – 18.000 15 0.70 1.50:1 -25 to +85 E2

Narrow Band MICPuck Isolators

Frequency [GHz] Isolation [dB min] INS Loss [dB max] VSWR max Operating Temperature [c] Package Code
1.000 – 1.050 19 0.50 1.25:1 -25 to +85 T4
1.525 – 1.559 20 0.50 1.20:1 -25 to +85 T4
2.020 – 2.190 20 0.40 1.22:1 -25 to +85 T4
2.100 – 2.300 20 0.50 1.25:1 -25 to +85 T4
2.300 – 2.500 20 0.50 1.25:1 -25 to +85 T3
2.400 – 2.800 20 0.50 1.25:1 -25 to +85 T3
2.500 – 2.900 20 0.50 1.25:1 -25 to +85 T3
2.700 – 2.950 20 0.50 1.25:1 -25 to +85 T3
2.900 – 3.300 20 0.50 1.25:1 -25 to +85 T3
3.100 – 3.300 20 0.50 1.25:1 -25 to +85 T3
3.400 – 3.800 20 0.50 1.25:1 -25 to +85 T3
3.500 – 3.700 20 0.50 1.25:1 -25 to +85 T3
4.300 – 4.500 21 0.50 1.20:1 -25 to +85 T1
4.400 – 4.800 21 0.50 1.20:1 -25 to +85 T1
4.700 – 4.900 20 0.50 1.25:1 -25 to +85 T1
5.400 – 5.900 20 0.50 1.25:1 -25 to +85 T1
5.850 – 6.450 20 0.50 1.20:1 -25 to +85 T1
6.400 – 6.700 20 0.50 1.25:1 -25 to +85 T1
6.650 – 7.350 20 0.50 1.25:1 -25 to +85 T1
6.700 – 7.100 18 0.60 1.20:1 -25 to +85 T1
7.100 – 7.300 19 0.50 1.25:1 -25 to +85 T1
7.125 – 7.875 18 0.50 1.30:1 -25 to +85 T1
7.200 – 7.400 19 0.50 1.25:1 -25 to +85 T1
7.250 – 7.750 18 0.50 1.30:1 -25 to +85 T1
7.400 – 7.600 19 0.50 1.25:1 -25 to +85 T1
7.550 – 8.050 19 0.50 1.25:1 -25 to +85 T1
7.825 – 8.475 21 0.50 1.20:1 -25 to +85 T1
7.825 – 8.475 21 0.50 1.20:1 -25 to +85 T2
8.050 – 8.250 19 0.50 1.25:1 -25 to +85 T2
8.550 – 9.450 18 0.60 1.30:1 -25 to +85 T2
9.400 – 9.900 19 0.50 1.25:1 -25 to +85 T2
9.800 – 10.800 18 0.60 1.30:1 -25 to +85 T2
10.700 – 11.700 21 0.50 1.20:1 -25 to +85 T2
10.700 – 12.750 20 0.50 1.20:1 -25 to +85 T2
11.000 – 13.000 18 0.60 1.30:1 -25 to +85 T2
11.400 – 11.700 20 0.50 1.25:1 -25 to +85 T2
11.700 – 12.700 21 0.50 1.20:1 -25 to +85 T2
12.700 – 13.800 21 0.50 1.20:1 -25 to +85 T2
13.100 – 14.700 18 0.60 1.30:1 -25 to +85 T2
13.400 – 15.000 18 0.60 1.30:1 -25 to +85 T2
14.000 – 14.500 21 0.50 1.20:1 -25 to +85 T2
17.100 – 17.900 17 0.80 1.40:1 -25 to +85 T2
17.300 – 18.500 21 0.50 1.20:1 -25 to +85 T2
17.800 – 19.000 21 0.50 1.20:1 -25 to +85 T2
18.100 – 19.100 19 0.60 1.25:1 -25 to +85 T2
18.800 – 20.200 20 0.60 1.20:1 -25 to +85 T2
19.500 – 20.500 19 0.50 1.25:1 -25 to +85 T2
20.000 – 20.600 21 0.60 1.20:1 -25 to +85 T2
20.200 – 21.200 21 0.60 1.20:1 -25 to +85 T2
21.000 – 23.000 19 0.60 1.25:1 -25 to +85 T2

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