Spiral Antennas

COTS. Custom. Wide-Band. Low Squint.

COTS and custom designed cavity-backed spiral antennas cover the frequency range from 0.5 to 42 GHz and provide wideband performance with left or right-hand circular polarisation.

Steatite spiral antennas provide broad beamwidth with a low squint, smooth radiation patterns and purity of circular polarisation. Typical airborne and ground-based applications include 360° direction finding, spectrum management, RWR, and ESM. Steatite provides custom designed spiral antennas and if required, integrate lensed radomes to improve performance.

QMS No.Frequency (GHz)Catalogue NumberGain (dBiC)Beamwidth (3dB)VSWR (Typical)Power c.w (W)Connector
QMS-007670.5 to 8QSP-RC-0.5-8-S-SG

-6.5 to 1.4 dBiL48 to 139< 1.4 :12SMA
QMS-003140.5 to 22QSP-RC-0.5-22-S-SG

0 to 560 to 115<1.5:12SMA
QMS-007621 to 18QSP-RC-1-18-S-SG-R

0 to 720 to 112<2.5:12SMA
QMS-009912 to 6QSP-RC-2-6-S-R-3.6 to 4.5 dBi63 to 135Typically <2:12W CWSMA Female
QMS-007602 to 18QSP-RC-2-18-S-SG-R

1.3 to 5.353 to 142<2.5:11SMA
QMS-009352 to 40QSP-RC-2-40-K-SG-7.7 to 4.7 dBi57 to 132< 2.0 :1 (Typically)2W CWK-Type Female
QMS-009926 to 18QSP-RC-6-18-S-R1.5 to 5.3 dBi52 to 99Typically <2:12W CWSMA Female
QMS-0004918 to 42QSP-LC-18-42-K-SG

1 to 4.247 to 94<2.5:12K
QMS-0005118 to 42QSP-RC-18-42-K-SG-L

2.2 to 6.230 to 80<2.5:12K

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