Selectable path stripline/slotline digital phase shifter
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United States of America Patent
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-
Jul 18, 2000
Grant Date -
N/A
app pub date -
Aug 21, 1997
filing date -
Aug 21, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The stripline-slotline digital phase shifter is located between a ground plane associated with a patch antenna and another ground plane associated with the other patch antenna, or other output circuits. It is comprised of a section of stripline adjacent to a slot in ground plane associated with the receiving patch antenna which transitions an input electromagnetic signal to a plurality of oval slotlines, called bit circuits, of varying lengths which form a delay circuit by shifting the phase of the input electromagnetic signal. The varying lengths of slotline are switched into and out of the circuit to provide a predetermined amount of delay and the phase adjusted electromagnetic signal is transitioned to portion of stripline adjacent to a slot associated with the transmission patch antenna or other output circuits.
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