REFERENCES

Another simulation was made, with the circuit simulated in the basic form, without enhancement circuits, assuming G,,,/Gds and CgslCgd ratios of 1000, with the biasing and signal current sources assumed as ideal. This is not realistic for the basic structures, but is reasonable when it is assumed that the additional enhancement circuits are present. The result is curve “d”. The same simulation for the alternative realizations resulted in similar curves (not shown). In the simulations, it was assumed that the circuit stabilizes com-pletely between the switching instants. Errors due to signal-dependent clock feedthrough and other nonlinear effects were not considered (these errors are dependent on details of the final implementation). IV. CONCLUSION The direct synthesis of exact SI bilinear simulations of passive filters using second-generation Euler integrators was demonstrated. A!ow-pass filter was used as example, but, as in SC realizations, the method can be extended to all the filter types. Second generation integrators were used due to their superior sensitivity characteristics, and simpler final structure. Comparisons made with alternative real-izations demonstrate that the proposed synthesis method is preferable, at least in the examined case of single-path filters, with unbalanced signals