Measurement Circuits with Rectangular-Wave-Input Ramey Amplifier
Michael S. Erlicki, A. Emanuel-Eigeles, J. Ben-Uri · IEEE Transactions on Industrial Electronics and Control Instrumentation · 1967
A rectangular-wave-exicted Ramey amplifier possesses the important advantages of linearity between input and output signals. These advantages can be utilized in a variety of analog devices for measuring phase angles, real and imaginary sine-wave components, and instantaneous values, as well as for plotting Heyland diagrams.