Radio transmitter/receiver for wireless local area network
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United States of America Patent
Stats
-
Nov 17, 1998
Issued Date -
N/A
app pub date -
May 11, 1995
filing date -
Jun 25, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A wireless local area network includes a radio transmitter/receiver for transmitting and receiving in accordance with the FCC rules for the ISM band. The receiver/transmitter supports spread spectrum frequency hopping in the 2.4 GHz ISM band and can be tuned to one of e.g. 82 different frequencies spaced at 1 MHz intervals. The radio transmitter/receiver is a low cost, low power, small size unit located on a printed circuit board in a PCMCIA form factor. Third order mixers are used in combination with a switched prescaler for a low cost and compact frequency control system capable of rapid switching of the radio between transmitting and receiving functions. No special shielding is needed between the frequency control circuitry and the receiver IF circuitry.
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