18 - 42 GHz Spiral Antennas
The QSPCP18-42K ultra wide-band 18 - 42 GHz circular polarised spiral antenna is ideal for EW radar detection and direction finding due to its broad beamwidth and low squint and axial ratio. Its compact size combined with its wideband performance and either left or right hand circular polarisation capability makes this antenna extremely versatile.
Model Number QSPCP18-42K
Due to the constant phase centre and wide bandwidth of the spiral antenna, it is ideally suited for use as a reflector feed. The purity of the circular polarization is also very good.
Features
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Applications include electronic surveillance, direction finding and reflector feeds requiring little phase centre variation with frequency
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Gain -1.5 to 7 dBiC over band
- Supplied with or without a mounting flange
- Stable antenna patterns provide consistent and repeatable performance
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Compact, Lightweight and Rugged construction enhance usability
- Excellent Axial Ratio : < 2 dB on boresight across the whole band
- A test report including gain against frequency is provided with each antenna
Contact us to discuss your particular needs
Specification
| Frequency | 18 - 42 GHz |
| Nominal Gain | -1.5 to 7 dBiC |
| 3 dB Beamwidth | Typically 85 - 40° |
| Typical VSWR | < 2.0 : 1 |
| Axial Ratio on Boresite | < 2 dB across the band |
| Weight | 32g with flange |
| Construction | Aluminium / Plated Brass |
| Power Handling |
nom. 2W, c.w. |
| Dimensions |
35.4 mm Diameter x 52 mm Length (With Mounting Plate) |
| Connector Type |
K type jack (2.92 mm) |
| Mounting |
6 holes, Diameter 3.1 mm, 30 mm p.c.d. |
