RobG
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No, in this case you are matching the depletion cap from substrate to base. The detailed description of the patent explains this better than I can, and is actually quite readable. I think there should actually be 38 caps on the right side for proper matching, but I assume that 32 was chosen because it gives a symmetric layout.
The base-emitter depletion caps should also be matched but they must be much smaller than the depletion caps of the base/collector or this would not have worked as I've explained. (Nor would it work if you weren't gaining up the voltage with R1 and R2. I don't remember doing matching Cbe, but the more I think back, the more I realize I forgot exactly what I did!
I'm not sure what you mean by tying an additional base resistor to ground - are you trying to match the base resistors? That's ok when the base is tied to ground, but that won't work at all in this circuit (R2 is already there). The base resistance in the figure is intentional: it nulls out the effect of base current drop in the R1/R2 network. Eq. 12 gives the value. Again, the patent talks about this in the explanation.
rg
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