Main Application: Generation of defined field strength levels for radiated immunity testing
The stacked Log Periodic Dipole Antenna (Stacked LPDA) consists of two ordinary Log.-Per. structures. The excellent characteristics (flat gain over a large bandwidth, low SWR) of the ordinary LPDA designs could be maintained using the stacked LPDA design. The stacked design helps to focus the directional pattern of the H-plane somewhat, resulting in a typical gain improvement of 2.5 dB compared to an ordinary LP antenna. This is especially important for immunity testing, where a maximum fieldstrength and a good field uniformity is required. The beamwidth in the E-plane and the H-plane are nearly identical, providing an optimised illumination of the EuT with minimised ground reflection influence. Further the cross polar rejection of the STLP 9128 D is excellent.
The fastlinks allows to disassemble the rear elements without any need for further tools within a few seconds. These fastlinks divide the antenna into five parts, which can be stored and transported easily.
| Frequency Range: | 80-3000 MHz |
| Usable Frequency Range: | 65-4000 MHz |
| Polarisation: | linear |
| Pattern Type: | directional |
| Material: | Aluminium |
| Max Power (7/16): | 2 kW (const.) 3 kW (intermitt.) |
| Max Power (N): | 1 kW (const.) 1.5 kW (intermitt.) |
| Connector: | Type 7/16 female Type N female |
| Impedance: | 50 Ohms nominal |
| Length: | 1460 mm |
| Width: | 1850 mm |
| Height | 2000 mm |
| Weight: | 8.1 kg |
| Mounting: | 22 mm diameter tube |
| Recommended Adapter: | AA 9209 |
Datasheet STLP 9128 D
Radiation Pattern
Short Measuring Distances
Assembly of STLP Antennas
Fastlinks (for quick removal of the rear parts of the antenna).