0.2 - 2 GHz Dual Linear Polarised Sinuous Antennas
The QSPDP0.2-2S is a 0.2 to 2.0 GHz ultra wide band (UWB) linear sinuous antenna which provides consistent performance across the band. The antenna shows excellent isolation between ports and cross-polar performance. A feature of this antenna is its lack of variation in polarisation (drift). Patterns are consistent and reliable, phase matched output ports enable excellent circularly polarised operation if desired.
Model Number QSPDP0.2-2S
The two ports provide orthogonal horizontal and vertical polarisation with less than five degrees variation in the direction of polarisation across the band and substantially better than five degrees over 90% of the band. E- and H-plane patterns are well matched, monotonic from bore-sight and showing negligible squint. Output ports are phased match for generation of high quality circularly polarised waves with the use of an external 90 degree hybrid, should this be required.
The antenna may be used for UWB applications requiring a fixed phase centre with negligible squint.
Features
- Gain, -4.2 to +3.6 dBi across the band
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VSWR < 2:1 over 90% band
- Suitable for use in UWB direction finders, ESM and EW systems, and for precision feeds for large reflector antennas and radio telescopes.
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High Port Isolation > 40 dB
- Dual Linear Polarisation operation, extendable to CP operation.
- Consistent and reliable antenna patterns across the band.
Please Contact us to discuss your particular needs
Specification
| Frequency | 0.2 - 2 GHz |
| Nominal Gain | -4.2 to +3.6 dBi |
| 3 dB Beamwidth | 90° - 67° for 0.3 - 2 GHz |
| Isolation |
> 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. |
