CST – Computer Simulation Technology

Super J-pole Antenna

Image of the Super J-pole antenna. Image of the Super J-pole antenna.

The J-pole antenna is a wire antenna with a form that resembles the letter "J" and performance similar to that of a wire dipole antenna. In its most basic form it is defined as a half wavelength antenna with a quarter wavelength matching stub. Similar to a dipole, the J-pole has an omnidirectional radiation pattern. It is sometimes referred to as an end-fed Zepp; a reference to the antennas used on the Zeppelin dirigibles in the 1930's. The Super J-pole is an extension of the J-pole antenna. The addition of a half-wavelength radiating section on top of the J-Pole antenna, increases the original gain by approximately 2 dB, and brings rise to the "Super" J-Pole.

The Super J-pole has a fairly narrow impedance bandwidth, ranging from 3.7% to 6.6%. The radiation pattern is similar to that of a dipole, with slightly more gain and small asymmetry about the azimuth....

Typical total 3D radiation pattern at the center frequency. Typical total 3D radiation pattern at the center frequency. Typical S11 performance of the antenna. Typical S11 performance of the antenna.

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