Variable coupling factor directional coupler
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United States of America Patent
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-
Feb 27, 2007
Grant Date -
Oct 7, 2004
app pub date -
Apr 4, 2003
filing date -
Apr 4, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A variable coupling factor directional coupler having a variable aperture positioned between a transmission line section and a coupling conductor connected at either end to a center conductor of a pair of connectors. The coupling factor of an RF signal in the transmission line section to the coupling conductor may be adjusted by linear movement of a gap plate to open or close the aperture. Alternatively, the coupling conductor may be located within a slotted tube. As the slotted tube is rotated, the slotted portion of the tube opens or closes the aperture. The position of the inner conductor of the coupling conductor with respect to a grounded sidewall can be adjusted to change the coupled line impedance in order to optimize the coupler directivity.
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