Barrie Gilbert RIP

[ppppenguin]

In my original post I stated that Gilbert didn't invent his eponymous cell. However it depends how you define the invention. The basic modulator, as embodied in the 1496, certainly predates Gilbert. In the valve era there were beam switching tubes and other balanced modulators but I don't think anyone used a topology that was equivalent to the 1496. Gilbert has a more solid claim to the linearising of the 4 transistor cell which is probably the one that should bear his name. See the 2nd and 3rd images in https://en.wikipedia.org/wiki/Gilbert_cell