Sinuous Antennas
The range of Q-par Angus' Dual Polar Sinuous antennas is outstanding for use in Radar Warning Receivers, general ESM applications and as feeds for reflectors. Far superior to all other types of antennas used in these applications, the RWR and ESM antennas are able to detect signals of almost any polarisation. Our standard Sinuous range covers from 0.2 – 18 GHz, with diameters from 716mm to 65mm. We also work with customers to develop bespoke sinuous solutions. This year will see the development of a higher frequency Sinuous antenna which will bring exceptional intercept opportunities for a range of threat signals that currently can only be intercepted by less capable, traditional antennas.
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Sinuous Antenna Features
Suitable for use in UWB direction finders, ESM and EW systems, and for precision feeds for large reflector antennas and radio telescopes
Consistent and reliable antenna patterns across the band See below for our different frequency and polarisation options
0.2 - 2 GHz Dual Linear Polarised Sinuous Antenna
Model Number: QSPDP0.2-2S
This antenna is currently only available with linear polarisation, a circular polarised version is possible, please enquire for more information.
Frequency 0.2 to 2 GHz
Nominal Gain 2 to 4 dBi
3 dB Beamwidth 90° to 67° for 0.3 to 2 GHz
Isolation Typically > 40 dB (between connectors)
VSWR < 3:1 (< 2:1 over 90% band)
Phase Matching +/- 5° across output ports
Weight 13.8 kg (31.2 lbs)
Construction Aluminium / Engineering Composites
Power Handling nom. 10 W, c.w.
Dimensions Diameter 716 mm (28.2") x 337 mm deep (13.3"),
Connector Type 2 x SMA female
Mounting Circular mount & connector plate having 8 holes,
0.5 - 4 GHz Dual Circular Polarised Antenna
Model Number: QSPDCP0.5-4S
* This antenna is also available as a Dual Linear Polarised Antenna operating over 0.4-4 GHz
Frequency 0.5 to 4 GHz
Nominal Gain - 6 to 1 dBiL
3 dB Beamwidth 80° to 70°
6 dB Squint ≤ ±3° typical
VSWR Typically < 1.9:1
Axial Ratio on Boresite < 4 dB, <2 dB from 1GHz
Weight 4.8 kg nominal
Construction Aluminium / Engineering Composites
Power Handling nom. 2W, c.w.
Dimensions 280 mm Diameter x 110 mm Length
Connector Type SMA
Mounting Lower rim M5 Helical Inserts
Environmental Customer Specified
0.7 - 4 GHz Dual Circular Polarised Antenna
Model Number: QSPDCP0.7-4S * This antenna is also available as a Dual Linear Polarised Antenna
Frequency 0.7 to 4 GHz
Nominal Gain -1 to 2.2 dBiC,
3 dB Beamwidth 100° to 60°
6 dB Squint Nominally ± 5°
Typical VSWR < 1.4:1 across the band
Axial Ratio on Boresite < 2 dB across whole band
Weight Approx. 4 kg
Construction Aluminium / Engineering Composites
Power Handling nom. 10W, c.w.
Dimensions 152 mm diameter x 112 mm height
Connector Type SMA
Mounting Lower rim. M5 Helical Inserts 6 X on a 137.16 mm PCD.
Environmental Customer Specified
Click HERE to see more on 0.7 - 4 GHz Sinuous Antennas
2 - 18 GHz Dual Linear Polarised Sinuous Antenna
Model Number: QSPDCP2-18SRA
Frequency 2 to 18 GHz
Nominal Gain -2.5 to 6 dBiL
3 dB Beamwidth 90° to 50°
6 dB Squint ≤ ±3° typical
VSWR 2.4 :1 Typical; 3.5:1 max
Isolation >30 dB between connectors
Weight 440g (Including radome)
Construction Aluminium / Engineering Composites
Power Handling nom. 2W, c.w.
Dimensions 65 mm diameter aperture x 117 mm Length (inclusive of connectors)
Connector Type SMA
Mounting Optional mounting flange 81 mm dia. or customer specified
Environmental Customer Specified
2 - 18 GHz Dual Circular Polarised Antenna
Model Number: QSPDCP2-18SRA
Frequency 2 to 18 GHz
Nominal Gain -5 to 2.6 dBiL
3 dB Beamwidth 85° to 50°
6 dB Squint ≤ ±3° typical
VSWR 2 to 10 GHz < 1.5:1 ; < 2:1 max
Axial Ratio on Boresite < 2 dB, 2 - 12 GHz; < 4 dB, 12 - 18 GHz
Weight 440g (Including radome)
Construction Aluminium / Engineering Composites
Power Handling nom. 2W, c.w.
Dimensions 65 mm diameter aperture x 108 mm Length (inclusive of connectors)
Connector Type SMA
Mounting mounting flange 81 mm dia. or customer specified
Environmental Customer Specified
Click HERE to see more on 2 - 18 GHz Sinuous Antennas
