Key Product Information


​​Electric Field Distribution

The model 3151 is used for both horizontal and vertical polarizations. The phase center /source position of the antenna shifts from the rear to the front end of the boom as frequency increases. To ensure a high field strength at the low frequency range (30 MHz to 45 MHz), the LPDA antenna needs to be placed at a close distance. However, the beam width of the antenna gets narrower at higher frequencies. Therefore, the antenna needs to be placed at a farther distance at higher frequencies to cover a larger uniform area. If the same distance is kept for the high and low frequency ranges, the field uniformity is compromised above 80 MHz.

 

Specifications Select a tab below for more information



Frequency Maximum: 220 MHz
Frequency Minimum: 20 MHz
Pattern Type: Directional
Polarization: Linear
  • Tophat-loaded LPDA Antenna with 1 5/8" EIA Connector
  • Mounting Bracket
  • Air Polarization Control Assembly
  • Standard Fixed Height Pedestal Positioner with Air Polarization and Manually Adjusted Tilt

 

 

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


  • 20 MHz to 220 MHz Frequency Range 
  • High Power Feed Handles up to 5 kW RF Input Power 
  • Space Saving Design Features Tophat-loaded, Low-frequency Elements 
  • Mounted on Wheeled Base for Easy Mobility

Literature and Videos


 

 

http://www.ets-lindgren.com/products/antennas/log-periodic-dipole-array/4017/401706<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>

 

 

http://www.ets-lindgren.com/products/antennas/log-periodic-dipole-array/4017/401706

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