Key Product Information

​​Frequency Range

The antenna covers a frequency range of 1 GHz to 18 GHz, making it ideal as a receive antenna for CISPR 16 based testing above 1 GHz. This antenna can be used with ETS-Lindgren’s Model 3183 for performing the site VSWR chamber validation method per CISPR 16.


The typical VSWR for the model 3186 is less than 2:1.

Low Input Power

This antenna is mainly a receive antenna, with a maximum input power of 20W continuous wave and a peak power of 30W.

Constant Beamwidth and Flat Directivity

The model 3186 was designed to provide a very constant illumination from 1 GHz to 18 GHz. The Beamwidth in the two principal planes is 59.8 degrees for the E-plane (the polarization plane) and 57.0 degrees for the H-plane (the orthogonal plane) while the directivity is about 10 dB across the entire frequency range. 

Specifications Select a tab below for more information

Frequency Minimum: 1 GHz
Maximum Continuous Power: 20 W
Impedance (Nominal): 50 Ω
VSWR (Average): 2:1
Connector: SMA (Female)
Pattern Type: Directional
Polarization: Linear
Width: 19.7 cm (7.76 in)
Length: 44.1 cm (17.36 in)
Height: 19.7 cm (7.76 in)
Weight: .7 kg (1.54 lb)
  • Antenna
  • Mounting Fixture for 1/4 in x 20 Threads
  • Individually Calibrated Factors at 3m per SAE ARP 958
  • Manual 
  • ETS-Lindgren Offers Several Non-metallic, Non-reflective Tripods



3144 Log Periodic Dipole Array ETS-Lindgren's Model 3144 Log Periodic Antenna is a standard medium gain (6 dBi) log periodic dipole array.
3145BDP Dual-Polarized Log-Periodic Dipole Array ETS-Lindgren's Model 3145BDP Dual-Polarized Log-Periodic Array is a dual linearly polarized, broadband antenna designed to operate over the frequency range of 100 MHz to 1.1 GHz.
3147 Log Periodic Dipole Array Antenna ETS-Lindgren's Model 3147 Log Periodic Dipole Array is primarily designed for use with the FCC Part 15.<br>
3148B Log Periodic Dipole Array ETS-Lindgren's Model 3148B Log Periodic Dipole Array Antenna is specifically designed for making CISPR 16-1 measurements which require a 20 dB difference in the cross polarization rejection.
3150B Dual Stacked LPDA Antenna ​ETS-Lindgren's Model 3150B Dual Stacked LPDA is a dual stacked log periodic dipole array antenna (LPDA), with each of the two LPDAs being 100 Ω antennas. When assembled in parallel, the result is a 50 Ω input impedance array.
3151 Log Periodic Dipole Array ETS-Lindgren's Model 3151 Foreshortened Log Periodic Dipole Antenna is a linearly-polarized log periodic dipole array (LPDA).
3152 Dual Array of LPDA Antennas <p>ETS-Lindgren's Model 3152 is a dual array of LPDA antennas based on the successful ETS-Lindgren Model 3148B.</p>
3186 Dual Stacked LPDA Antenna ETS-Lindgren's Model 3186 is a dual stacked log periodic dipole array antenna (LPDA), each of the two separate LPDAs comprising the dual array are 100 Ω antennas. When assembled in parallel, the results are a 50 Ω input impedance array.

Key Features

  • 1 GHz to 18 GHz Frequency Range 
  • 2:1 VSWR Average 
  • Up to 20W Input Power 
  • Constant E- and H-Plane Beamwidth 
  • Flat Directivity

Literature and Videos<a href="/sites/etsauthor/ProductBrochures/General%20Brochures/Test_and_Measurement_Full_Line.pdf"><img alt="" src="/_layouts/15/IMAGES/icpdf.png" />Test_and_Measurement_Full_Line.pdf</a>

L o a d i n g

 Catalog-Item Reuse