• Specifications
  • Overview

Cavity Backed Spiral Antenna


Back lobe Level≤ -20 dB for 3-18 GHz ≤ -12 dB for <3 GHz
Beam Squint≤ 6° for 80% of band ≤ 10° for 100% Band
Axial RatioBore Sight : ≤ 3 dB ± 45° OFF Axis : ≤ 6.5 dB
10 dB Beam width110º to 200º over 80 % of the Band 100º to 220º over 100% of the Band
3dB Beam width55º -110º over 100 % of the Band
Gain Tracking (For a batch of antennas)±1 dB On bore sight ±2 dB at ±45º
Gain (Nominal)-17 dBi C at 1 GHz -3 dBi C at 2 GHz 0 dBi C at 3-18 GHz
PolarizationCircular (LHCP)
VSWR≤ 2.5: 1
Power≥ 2 W


Weight300 g Max (With radome)
DimensionDiameter: 71.8 ± 0.5 mm Height: 80 ± 0.5 mm (without connector)
RF ConnectorSMA Female
FinishAntistatic rain erosion resistant semi gloss grey/black


Temperature-54 ºC to +190ºC
Altitude65, 000 feet
Note: The general datasheet for this product is available for download using the 'Download' link provided below. Please login to our customer section using the 'Login' link below for detailed information related to this product including gain, VSWR and other product related data.

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JK S10 L is a wide band circularly polarized cavity backed spiral antenna designed to withstand very high service temperature with optimum electrical performance. The antenna is encased within an electrically paired radome. The antenna is designed to be used with airborne ESM and ECM systems. The antenna is qualified for supersonic platforms and is designed to withstand high temperature up to 200oC.



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