An efficient biasing technique suitable for any kind of the four basic amplifiers designed at or level

An efficient biasing technique, suitable for any kind of the four basic amplifiers, is introduced. First, from a given transfer function, the small-signal circuit is designed at or level. Second, the or-circuit is biased considering a set of rules based on the or properties. Finally, an efficient bias scheme is obtained after the uniqueness of the DC operating point is established.