Spiral Antennas

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.

Spiral Antennas Specification

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

SMA

QMS-00314

0.5 to 22

QSP-RC-0.5-22-S-SG

0 to 5

60 to 115

<1.5:1

SMA

QMS-00762

1 to 18

QSP-RC-1-18-S-SG-R

0 to 7

20 to 112

<2.5:1

SMA

QMS-00760

2 to 18

QSP-RC-2-18-S-SG-R

1.3 to 5.3

53 to 142

<2.5:1

SMA

QMS-00049

18 to 42

QSP-RC-18-42-K-SG

1 to 4.2

47 to 94

<2.5:1

QMS-00051

18 to 42

QSP-RC-18-42-K-SG-L

2.2 to 6.2

30 to 80

<2.5:1

Catalogue Numbers Explained (PDF, 260KB)

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