CST – Computer Simulation Technology

TEM Horn with Magnetic Dipoles

Image of the TEM Horn with Magnetic Dipoles. Image of the TEM Horn with Magnetic Dipoles.

The TEM Horn with Magnetic Dipoles often called the ‘Koshelev’ horn or ‘K-antenna’ - has been specifically designed for UWB applications. This horn antenna is referred to as a combined antenna - where an existing antenna type (the TEM horn) has been modified by adding extra physical components to optimize the performance for a certain application. In this case, the TEM horn has been modified by adding a metallic casing and a shorting plate to the structure to improve wideband performance - achieving a -10dB reflection response over a 11:1 bandwidth

Horn topology with 3 numbered radiators. Horn topology with 3 numbered radiators.

As shown in the diagram above, this combined horn can be described as a combination of radiators: an electric type radiator in the form of a TEM horn (1), an active magnetic dipole type radiator (2), and a passive magnetic dipole radiator (3). This structure reduces the lower frequency of the band by approximately 45% when compared to the well-known TEM horn antenna without the shorting plate....

The antenna achieves a -10dB reflection response over an 11:1 bandwidth.

Typical reflection coefficient. Typical reflection coefficient.

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