Importance

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Abstract

Provided are apparatuses and methods for a tri-frequency feedchain configured to combine at least three frequency bands on a waveguide. The feedchain includes a turnstile configured to support two orthogonal fundamental modes and combine six filtered signals and a third signal and output the combined signal via an output port. The feedchain also includes at least six filters disposed about the turnstile configured to filter a split signal into the filtered signals. The turnstile is a junction for the filters and includes a port at the interface of each filter and the turnstile for receiving the filtered signal. The turnstile includes a third signal port configured to receive the third signal. The split signals are of an intermediary frequency band comprising a first and second frequency band and the third signal is of a third frequency band. The first, second, and third frequency bands do not intersect.

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First Claim