CPC H03H 11/20 (2013.01) [H03H 11/265 (2013.01); H03H 17/0009 (2013.01); H03H 17/0054 (2013.01); H03H 17/08 (2013.01)] | 26 Claims |
1. A reflective passive phase shifter including:
(a) a radio frequency coupler having an input port, a direct port, a coupled port, and an isolation port;
(b) a first artificial transmission line coupled to the direct port and having a selectable electrical length;
(c) a second artificial transmission line coupled to the coupled port and having a selectable electrical length; and
(d) a ground conductor encircling at least the radio frequency coupler.
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