COTS and custom designed Dual Linear and Dual Circular Polarised, sinuous antennas for direction finding, ELINT, RWR and ESM airborne, sea and ground-based applications.
Sinuous antennas provide wide bandwidth, dual polarisation and wide beamwidths
Our range of sinuous antennas simultaneously handle signals of any two orthogonal linear polarisations and simultaneous left and right-handed circular polarisations dependent on antenna design. This provides intercept opportunities for a wide range of arbitrarily polarised signals, from devices also giving a wide bandwidth and broad beamwidth.
Steatite’s standard and custom-built sinuous antennas are ideal for direction finding, ELINT, RWR (Radar Warning Receivers) and ESM (Electronic Support Measures) applications.
The sinuous antennas can also be used as feeds for reflector antennas where they give the advantage of a stable phase center across the frequency band.
As with other Steatite products, bespoke designs or modifications may be accommodated.
| QMS No. | Frequency (GHz) | Catalogue Number | Polarisation | Power c.w. (W) | VSWR (Typical) | Gain (dBi) | Beamwidth (3dB) | Isolation (dB) |
| QMS-00035 | 0.2 to 2 | QSI-DL-0.2-2-S-SG | Dual Linear | 10 | <3.0:1 | -4.2 to 3.6 | 91.6 to 69° | >35 |
| QMS-00037 | 0.4 to 2 | QSI-DL-0.4-2-N-SG-R | Dual Linear | 2 | <3.6:1 | 1.3 to 6.4 | 62 to 48° | >34 |
| QMS-00360 | 0.5 to 3 | QSI-DL-0.5-3-S-SG-R | Dual Linear | 2 | <3.0:1 | -0.2 to 5.8 | 56 to 96° | >30 |
| QMS-00040 | 0.7 to 4 | QSI-DL-0.7-4-S-SG | Dual Linear | 10 | <2.6:1 | 0 to 4.1 | 55 to 94° | >34 |
| QMS-00015 | 2 to 18 | QSI-DL-2-18-S-SG | Dual Linear | 1 | <3.2:1 | -3.8 to 4.4 | 64 to 109° | >32 |
| QMS-00488 | 2 to 24 | QSI-DL-2-24-S-SG | Dual Linear | 2 | <3:1 | -8 to 3 | 145 to 60° | >30 |
| QMS-00046 | 0.5 to 4 | QSI-DC-0.5-4-S-SG-R | Dual Circular | 2 | <1.5:1 | -6 to 6 dBiC | 62 to 102° | – |
| QMS-00043 | 0.7 to 4 | QSI-DC-0.7-4-S-SG | Dual Circular | 2 | <1.4:1 | -1 to 2.2dBiC | 102 to 56° | – |
| QMS-00044 | 2 to 18 | QSI-DC-2-18-S-SG-L | Dual Circular | 2 | <2:1 | – 5.2 to 2.6dBiC | 42.6 to 95° | – |
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