Re: Electronic Design - Project Management

A bit more of a clue is 3 tuned LF antennas in the near field (magnetic
field) for X, Y, Z direction becuase the rod antennas will be directional.

The wake IC detects a serially transmitted ASK pattern before it wakes up
the micro and 433MHz Tx.

Joe.

"Joel Kolstad" <JKolstad71HatesSpam@xxxxxxxxx> wrote in message
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Hi Joe,

6uA is good!

"Joe G (Home)" <joe.g@xxxxxxxxxxxxxxx> wrote in message
news:45758993$0$5747$afc38c87@xxxxxxxxxxxxxxxxxxxxxxx
But you can't just detect amplitude becuase it may false detect single
carrier interference eg from a PC monitor OR switch mode power supply.

Sure, and I imagine some tags are not very good about conserving power in
the presence of such interferers. I've always been surprised that most
cell phones are pretty poor at conserving power when they're out of range
of a tower -- they seem to keep searching for a tower on a regular basis
rather than changing to some more adaptive scheme.

---Joel




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