0.7 - 4 GHz Dual Circularly Polarised Sinuous Antennas
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The QSPDCP0.7-4S ultra wide band circularly dual polarised sinuous antenna is manufactured from aluminium and engineering composites. Its compact size, minimal beam squint and circular dual polar capability make it an attractive candidate for many air-borne and precision ground-based applications.
Model Number QSPDCP0.7-4S
Antenna Radiation Patterns and full specifications are available on the datasheet above.
Radiation pattern beamwidths are closely matched between E & H planes and have remarkable stability versus frequency. This, and the small variation of phase centre, also make it an attractive candidate for feeds in reflector dishes.
The prototype version shown above includes external hybrids at the rear of the antenna. These will be incorporated into the antenna housing itself on the full production model which will be available shortly.
Features
- Suitable for use in electronic surveillance, direction finding and reflector feeds requiring little phase centre variation with frequency
- Gain -3 to +4 dBi across the band
- Low weight and small size enhance usability
- Output ports are phase matched to just ±5º
Contact us to
discuss your particular needs
Provisional Specification
Specifications are liable to change and improve as development work is finalised.
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| Frequency | 0.7 - 4 GHz
|
| Nominal Gain | -3 - +4 dBiC
|
| 3 dB Beamwidth | 100° - 60°
|
| 6 dB Beamwidth |
140° - 90°
|
| 6 dB Squint
|
Nominally ± 3°
|
| VSWR | < 1.4:1 across the band
|
| Axial Ratio on Boresite
|
< 0.8 dB in 90% of band, < 2 dB over whole band
|
| Axial Ratio at ±45º | < 1 dB in 90% of band, < 2 dB over whole band
|
| Weight | 1.4 kg
|
| Construction | Aluminium / Engineering Composites |
| Power Handling |
nom. 10W, c.w.
|
| Dimensions
|
153 mm diameter x 115 mm height
|
| Connector Type
|
SMA |
| Mounting |
Customer specified
|
| Environmental | Customer Specified |
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