Design of high-gain wide-band harmonic self-oscillating mixers

摘要

In this work, a new design method is presented for the design of wide-band harmonic self-oscillating mixers (HSOM) with high conversion gain. The optimum design for the HSOM circuit is obtained using bifurcation analysis- and control-techniques in combination with nonlinear optimization techniques based on the use of an auxiliary generator. The design method is illustrated through the design of an 11.25-1.5 GHz third harmonic self-oscillating mixer (3HSOM) with a 6.5 dB down-conversion gain over a 1.6 GHz bandwidth. It is also demonstrated how the frequency variation of the conversion gain can be shaped by means of the use of bifurcation control techniques. A good agreement between the simulated and experimental results has been found.