3148B Log Periodic Dipole Array

3148B Log Periodic Dipole Array

Frequency Range: 200 MHz – 2 GHz The ETS-Lindgren Model 3148B Log Periodic Antenna is specifically designed for making CISPR 16-1 measurements which require a 20 dB difference in the cross polarisation rejection. This is achieved using an engineering design and manufacturing process that offsets all of the elements in a precision pattern. The excellent cross-polarisation property ensures minimum measurement uncertainty for radiated emissions and normalized site attenuation measurement. The Model 3148B antenna features relatively constant linear gain (measures in far field without any sudden “dips” or “bumps”). The precision construction of the assembly of the boom and elements result in excellent VSWR and optimal phase relationship.   Electrical Specifications

Frequency Minimum 200 MHz
Frequency Maximum 2 GHz
Connectors Type N (f)
Impedance (Nominal) 50 Ω
Maximum Continuous Power 1 kW
Pattern Type directional
Peak Power 1.3 kW
Polarization linear
VSWR 1.2:1

Key Features

  • High Gain
  • Meets CISPR Cross Polarization Requirements.
  • Low VSWR
  • Powder Coat Finish
  • Individually Calibrated
  • Two Year Warranty
  • Flexible Mounting System

Application Notes