2 - 18 GHz Spiral Antennas
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The QSPCP2-18S wide band circularly polarised cavity-backed spiral antenna is manufactured from aluminium and engineering composites. Its compact size, excellent VSWR across the band and purity of circular polarisation make it an attractive candidate for many air-borne and precision ground-based applications. LHCP and RHCP versions available.
Model Number QSPCP2-18S
This antenna is in production, however, there is a continuing development project for this antenna and other frequency variants, please contact us for the latest specifications and any special requirements.
The purity of the circular polarisation from this antenna is exceptional across the band. This, and the
small variation of phase centre, also make it an attractive candidate
for feeds in reflector dishes. Our cavity backed spirals also feature the use of our proprietary innovative designed RAM.
Features
-
Suitable for use in electronic surveillance, direction finding and reflector feeds requiring little phase centre variation with frequency
-
Gain -4.5 to +3.3 dBiL across the band
- Low VSWR
- Stable antenna patterns provide consistent and repeatable performance
-
Lightweight and Rugged construction enhance usability
- Excellent Axial Ratio : < 2 dB across the whole band
- A full antenna test report including gain against frequency is provided with
each antenna
Contact us to
discuss your particular needs
Specification
Specifications are liable to change and improve as development work continues.
Please check back to this website and/or RSS feeds and Q-par E-news for updated details.
| Frequency | 2 - 18 GHz |
| Nominal Gain | -4.5 to + 5 dBiL
|
| 3 dB Beamwidth | 90° - 63°
|
| VSWR | < 1.8:1 |
| Axial Ratio on Boresite | < 2 dB across the band |
| Axial Ratio at +/- 45° | < 3 dB across the band
|
| Weight | 140 g (4.9 oz)
|
| Construction | Aluminium / Engineering Composites |
| Power Handling |
nom. 10 W, c.w.
|
| Dimensions
|
70 mm Diameter x 60 mm Length (inclusive of connectors)
|
| Connector Type
|
SMA, other connector options available |
| Mounting |
3 holes, tapped 10-32 UNF (x 10mm deep), 45.7mm (1.8 inch) p.c.d. Customer Specified mounting plates are also available. |
| Environmental | Designed and constructed to meet MIL-E-16400 / MIL-E-5400, class 2 CATEGORY III |
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