CST – Computer Simulation Technology

Waveguide-Fed Short Backfire Antenna

Image of the Waveguide-fed short backfire antenna. Image of the Waveguide-fed short backfire antenna.

The Waveguide-fed short backfire antenna was introduced in the early 70's, a few years after its dipole fed predecessor. The high frequency waveguide-feed enables the antenna to handle higher power levels and higher frequencies.

The implementation of this antenna in Antenna Magus uses a pin to excite the waveguide feed which results in a narrowband structure with good impedance matching (though wider band performance is possible using more elaborate feeding and matching structures). The image below shows a typical pattern of the antenna with maximum gain of 15.6 dBi.

Normalized gain patterns. Normalized gain patterns.

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