Fig. 3: Some examples of Frequency Modulated designs.
From: Sub-THz communication systems: pushing the capabilities of silicon
a A description of the settling time of an injection locked oscillator vs coupled oscillators, reproduced with permission from Chen et al.51. b The phase shifters from the same work, reproduced with permission from Chen et al.51. c An example 4-symbol Frequency Shift Keying Transmitter, reproduced with permission from Afzal et al.52. d A PIN diode-based transmitter, reproduced with permission from Razavian et al.53.
