STLP 9128 C - Stacked Log Periodic Antenna

  • Schwarzbeck STLP9128C stacked log.-periodic antenna
  • Schwarzbeck STLP9128C stacked log.-periodic antenna_2

The stacked Logarithmic Periodic Dipole Antenna consists of two ordinary Log.-Per. structures. The excellent characteristics (flat gain over a large bandwidth, low SWR) of the ordinary Log.-Per. designs could be maintained using the stacked LP design. The stacked design helps to focus the directional pattern of the H-plane somewhat, resulting in a typical gain improvement of ca. 2-3 dB compared to an ordinary LPDA. 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 STLP 9128 C has an excellent cross-polar rejection.  


Frequency Range:

(150)200-1500 (4000) MHz



Pattern Type:




Max Power (7/16): 

2 kW (const.)
3 kW (intermitt.)

Max Power (N): 

1 kW (const.)
2 kW (intermitt.)


Type 7/16 female

Type N female

Impedance: 50 Ohms nominal


Length: 890 mm
Width: 930 mm
Height 940 mm
Weight: 4.6 kg
Mounting: 22 mm diameter tube


pdficon small Datasheet STLP 9128 C

Radiation Pattern

Short Measuring Distances



Option: with 7/16-connector 3 kW

Option: with [13-30-connector] limited to 2500 MHz

but higher power up to 8 kW including adapter similar to AA 9202


Datasheet STLP 9128 C Opt. 13-30

Assembly of STLP Antennas