Greg Troxel writes:
>   In most implementations, there is no 'summing', rather the "best" of
>   the N (typically 2) antennas is fed to the baseband.
> 
> So there are 2 IF stages, with independent AGC-type detectors, and the
> one with the stronger signal gets demodulated?

No, there is one I/F stage, and one AGC, and the baseband runs a
switch.

This is difficult (but not impossible) to do with 802.11a or the OFDM mode of 802.11g.

> I didn't mean to claim there was.  This is simply constructing an
> antenna pattern which is half of the high-gain pattern and half of a
> lower-gain pattern, which might or might not have greater utility.  My
> understanding of Fred's problem is that the signal level below the
> antenna is too low, and that the antenna-centric solution is to fill
> in the sidelobes a little bit.

It is likely that the path-loss below the antenna is quite low as well.

-- 
"Speed, it seems to me, provides the one genuinely modern pleasure."
                        -- Aldous Huxley (1894 - 1963)

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