0.7 - 4 GHz Dual Circularly Polarised Sinuous Antennas
Model Number QSPDCP0.7-4S
We are delighted to announce our full Technical Production Specification for this part. Details are below.
The 0.7 - 4 GHz Sinuous Antenna is a particularly versatile antenna for many applications. 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.
This design employs dielectric top cavity walls for improved low frequency performance. An all-metal variant is also available.
Sinuous Antennas are particularly important in RWR / Threat Warning Receiver systems.
Features
- Suitable for use in electronic surveillance, direction finding and reflector feeds requiring little phase centre variation with frequency
- Gain -1 to +2 dBiC across the band
- Low weight and small size enhance usability
- A test report including gain against frequency is provided with each antenna
Contact us to discuss your particular needs
Specification
| 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° - 65° |
| 6 dB Beamwidth |
140° - 90° |
| 6 dB Squint |
Nominally ± 5° |
| 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 |
