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So work went on both AESA and PESA types, theory being concurrent on both sides of the Atlantic.This technology was possible in L-band by 1960, and in S-band by the late 60's, but X-band took until the 70's due to component materials technology.Garnett crystals formed the basis of L or S transmitters.The use of a single source is to keep arrays in sync. Arleigh Burke uses this connecting them via four waveguideds of equal length. This was a cheap and easy solution.But the Ticonderoga didn't do that, instead two radio sources were kept in sync by electronics (likely processor clock cycles of some sort) and these sources were keeping only a pair of the arrays in sync. This earlier solution was expensive complex and difficult and led to the Arleigh Burke design.
So work went on both AESA and PESA types, theory being concurrent on both sides of the Atlantic.
This technology was possible in L-band by 1960, and in S-band by the late 60's, but X-band took until the 70's due to component materials technology.
Garnett crystals formed the basis of L or S transmitters.
The use of a single source is to keep arrays in sync. Arleigh Burke uses this connecting them via four waveguideds of equal length. This was a cheap and easy solution.
But the Ticonderoga didn't do that, instead two radio sources were kept in sync by electronics (likely processor clock cycles of some sort) and these sources were keeping only a pair of the arrays in sync. This earlier solution was expensive complex and difficult and led to the Arleigh Burke design.
