Phase shifter and communication device using the same
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United States of America Patent
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-
Oct 7, 2003
Grant Date -
Feb 28, 2002
app pub date -
Apr 27, 2001
filing date -
Apr 28, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A phase shifter includes a comb-line defined by first and second transmission lines that are electromagnetically coupled with each other and a plurality of variable-capacitance diodes connected to the first and second transmission lines defining the comb-line. In the phase shifter, one end of the first transmission line is connected to an input terminal, one end of the second transmission line is connected to an output terminal, and the variable-capacitance diodes are connected between the other ends of the first and second transmission lines and the corresponding grounds.
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