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 Number Gain (dBiC) Beamwidth (3dB) VSWR (Typical) Power c.w (W) Connector
QMS-00767 0.5 to 8 QSP-RC-0.5-8-S-SG

-6.5 to 1.4 dBiL 48 to 139 < 1.4 :1 2 SMA
QMS-00314 0.5 to 22 QSP-RC-0.5-22-S-SG

0 to 5 60 to 115 <1.5:1 2 SMA
QMS-00762 1 to 18 QSP-RC-1-18-S-SG-R

0 to 7 20 to 112 <2.5:1 2 SMA
QMS-00991 2 to 6 QSP-RC-2-6-S-R -3.6 to 4.5 dBi 63 to 135 Typically <2:1 2W CW SMA Female
QMS-00760 2 to 18 QSP-RC-2-18-S-SG-R

1.3 to 5.3 53 to 142 <2.5:1 1 SMA
QMS-00935 2 to 40 QSP-RC-2-40-K-SG -7.7 to 4.7 dBi 57 to 132 < 2.0 :1 (Typically) 2W CW K-Type Female
QMS-00992 6 to 18 QSP-RC-6-18-S-R 1.5 to 5.3 dBi 52 to 99 Typically <2:1 2W CW SMA Female
QMS-00049 18 to 42 QSP-LC-18-42-K-SG

1 to 4.2 47 to 94 <2.5:1 2 K
QMS-00051 18 to 42 QSP-RC-18-42-K-SG-L

2.2 to 6.2 30 to 80 <2.5:1 2 K

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01568 617 920