Design of a 1.4THz fourth-Harmonic mixer based on monolithic integrated circuit

To reduce the difficulty of local oscillator, a 1.4 THz fourth-harmonic mixer is proposed in this paper. The linear and nonlinear circuits are analyzed using finite element method and harmonic balance method respectively. Simulation result shows that the conversion loss is below 16.3 dB from 1400 GHz to 1480 GHz with 8mW Local Oscillator power at 365 GHz.

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