Modulated backscatter microstrip patch antenna
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United States of America Patent
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-
Oct 20, 1998
Issued Date -
N/A
app pub date -
Jul 23, 1996
filing date -
Oct 4, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention provides a microstrip patch antenna for emitting backscatter-modulated signals in response to a received signal. The antenna has two segments that are connected together by a switch. When the switch is ON, the antenna is a full wave length antenna with its two segments out-of-phase with each other, thus producing minimal backscatter. When the switch is OFF, the two segments of the antenna act in concert with each other to produce a backscatter-modulated signal. Multiple pairs of such antennas can be connected together to make a single antenna with increased signal power.
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Cited Art Landscape
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