Millimeter wave low-loss high-isolation switch

摘要

A switch (20) for selectively providing an input signal to an output terminal. The switch (20) includes a first waveguide terminal (40), a second waveguide terminal (42), a reduced-width waveguide (26) connecting the first waveguide terminal (40) to the second waveguide terminal (42), and at least one switching element (34) spanning the reduced-width waveguide (26) between the first and second waveguide terminals (40, 42). The reduced-width waveguide (26) is configured to pass a signal from the first waveguide terminal (40) to the second waveguide terminal (42) when the at least one switching element (34) is in a first state and block a signal when the at least one switching element (34) is in a second state. In some embodiments, the switch also includes at least one additional waveguide terminal (59) and the reduced-width waveguide also connects the first waveguide terminal to the at least one additional waveguide terminal.