Non-dispersive microwave phase shifters

摘要

In one embodiment, a non-dispersive phase shifter includes a composite right- and left-handed (CRLH) circuit that can be toggled between a first phase delay state and a second phase delay state with a substantially constant phase shift over a range of frequencies.

主权项

1. A non-dispersive phase shifter comprising:
a composite right- and left-handed (CRLH) circuit that comprises a CRLH unit cell that can be modeled as an inductor in series with a capacitor and a shunt element comprising an inductor and capacitor in parallel, the CRLH unit cell comprising two independent CRLH unit cell circuits that can be alternatively selected, one configured to enable the first state and the other configured to enable the second state, wherein the CRLH circuit can be toggled between a first phase delay state and a second phase delay state with a substantially constant phase shift over a range of frequencies.