Miniature active conversion between slotline and coplanar waveguide
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United States of America Patent
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Oct 13, 1998
Grant Date -
N/A
app pub date -
Sep 25, 1996
filing date -
Sep 25, 1996
priority date (Note) -
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Abstract
An active device, such as a field effect transistor ('FET'), converts microwave signals between a slot transmission line ('slotline') and a coplanar waveguide ('CPW') In slotline-to-CPW conversion using one or more FETs, a gate connection is made to one or both of the slotline conductors. A drain connection is made to the center conductor on the CPW. Two FET source terminals are connected respectively to each CPW ground strip and may be coupled to a slotline conductor. The active device can be reconnected so as to reverse the input and output, providing for conversion of signals from CPW to slotline. Conversion between balanced-signal slotline and CPW further includes passive or active phase shift of one signal path.
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