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Waveguide technology has become an indispensable technology in all industries of transmitting systems. The FEKO support team recognises that FEKO's users may also want to apply FEKO to waveguide structures and offers this application note to describe some of the benchmark simulations of waveguide components that are available on the FEKO website.

Waveguide Magic Tee Coupler

The magic tee is a four-port, 180° hybrid splitter, realised in waveguide. Like all of the coupler and splitter structures, the magic tee can be used as a power combiner or a divider. It is ideally lossless, so that all power into one port can be assumed to exit the remaining ports. Figure 1 depicts a CADFEKO model of a WR-90 waveguide magic tee. A signal incident on the sigma port (port 1) splits equally between ports 3 and 4, with the resulting signals being in phase. On the other hand, a signal incident on the delta port (port 2) also splits equally between ports 3 and 4, but the resulting signals are 180° out of phase. Ports 3 and 4 are sometimes called the co-linear ports as these are the only two ports that are in line with each other.

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•Application Note: Waveguide Applications Of FEKO