Radio tranceiver for data communications
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United States of America Patent
Stats
-
Aug 21, 2001
Issued Date -
N/A
app pub date -
Sep 21, 1999
filing date -
Apr 20, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A compact low-power radio frequency (RF) transceiver with a built-in antenna provides wireless communication between a computer and another device. A direct conversion receiver together with a voltage controlled oscillator, phase lock loop circuits, digitally controlled divider circuits and a patch antenna are packaged into a compact enclosure, having dimensions within the PCMCIA format. In some embodiments, the transceiver enters a sleep mode whenever it is idle in order to further conserve power. In other embodiments, a signature detector enables the transceiver to distinguish between noise and valid messages by recognizing a signature word embedded in the data packet.
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