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ETS-Lindgren Model 3140B BiConiLog - USED
Used ETS-Lindgren 3301C Active Monopole Antenna For Sale
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The ETS-Lindgren Model 3104B BiConLogTM high-field antenna in the bow tie/log periodic family, providing the highest field-to-power ratio at low frequencies of any of the BiConiLog antennas. The Model 3140B is designed specifically to generate the field levels required for immunity/susceptibility tests required by standards such as IEC/EN 61000-4-3 using the lowest amount of input power possible.
A BiConiLog antenna combines a broadband biconical-like bow tie antenna with a standard log periodic dipole array (LPDA) to replace the traditional use of two antennas in the 26 MHz to 3000 MHz electromagnetic compatibility (EMC) test frequency range. Many EMC antennas are variations of a standard tuned dipole, which must be nearly half a wavelength long to transmit or receive energy most efficiently; at 26 MHz, a tuned dipole would have to be approximately 5.3 meters long, 4.6 meters long at 30 MHz, and 2.8 meters long at 50 MHz. This is unwieldy for many anechoic chambers and test sites. The end plates of the Model 3140B T bow ties make the bow tie antenna segment look like an antenna twice as long as the actual 1.6 meter length. The result is about a 10 dB improvement in low frequency transmit gain compared to a regular bow tie of the same length.
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