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.
Sinuous Antenna Features
-
VSWR < 2:1 over 90% band for Linear Polarised Antennas
- Suitable for use in UWB direction finders, ESM and EW systems, and for precision feeds for large reflector antennas and radio telescopes
-
Designed for an Airborne environment
- Dual Linear Polarisation operation as well as Circular Polarised Versions.
- Consistent and reliable antenna patterns across the band
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"), inclusive of connectors |
| Connector Type |
2 x SMA female |
| Mounting |
Circular mount & connector plate having 8 holes, diameter 8.1 mm, 290 mm (11.417") p.c.d. Other customer specified mounting is available. |
Click Here to see more on 0.2 - 2 GHz Linear Polarised Sinuous Antennas
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, An option is available for more uniform gain up to 4 GHz, (~1.5dB improvement @ 4 GHz) |
| 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 (See Datasheet for typical performance) |
| 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. M4 Dowels 6 X on a 137.16mm 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
