four-quadrant multiplier

four-quadrant multiplier

[¦fȯr ¦kwäd·rənt ′məl·tə‚plī·ər]
(computer science)
A multiplier in an analog computer in which both the reference signal and the number represented by the input may be bipolar, and the multiplication rules for algebraic sign are obeyed. Also known as quarter-square multiplier.
References in periodicals archive ?
The functional block illustrated in Figure 3 represents a four-quadrant multiplier (FQM).
Equation 15 can be implemented in baseband, or in a relatively low intermediate frequency (in an analog way) using operational amplifiers and analog four-quadrant multipliers.
Considering the previous result, eight four-quadrant multipliers will be required -- four for the multiplication [v.
RF Mixers and Modulators Made with a Monolithic Four-Quadrant Multiplier
On the other hand, the four-quadrant multiplier of Figure 1b has an output (different current [W.