Figure 12
From: Combinatorial logic devices based on a multi-path active ring circuit

Experimental data measured at DC-0. (A) Circulating power at different positions of the external phase shifter \(\Psi\). There are no auto-oscillations in the range from 110° to 150°. All measurements are accomplished at the fixed amplification of 18 dB, which is just below the self-oscillation threshold. (B) The dominant frequency of the energy flow. The data are obtained using Spectrum Analyzer. There are two dominant frequencies consistent with the results of preliminary testing.