Five-stage four-bit complex multiplier

Details Five-stage four-bit complex multiplier Five-stage four-bit complex multiplier

1976-08-18

1978-04-25

Malzahn, David H.

Boots, shoes, and leggings

G06F 752

Patent

active

040866572

ABSTRACT:
A multiplying system for complex numbers using four three-stage 4 .times. 4 bit 2's complement multipliers and a modified adder and subtractor. Two of the 2's complement multipliers are fed to the subtractor which produces a 9 bit output representing the real term of the complex product and the other 2's complement multipliers are fed to the adder which produces a 9 bit output representing the imaginary term of the complex product. Each of the 3-stage 2's complement multipliers are modified from prior art multipliers to effect the two most significant bits. The unique adder and subtractor as well as the multipliers are implemented with universal logic gates consisting of cascode circuit components resulting in five gating stages for the complex multiplying system.

REFERENCES:
patent: 3673399 (1972-06-01), Hancke et al.
patent: 3725686 (1973-04-01), Ustach
patent: 3800130 (1974-03-01), Martinson
patent: 3803390 (1974-04-01), Schaepman
patent: 3866030 (1975-02-01), Baugh et al.
patent: 3926367 (1975-12-01), Bond et al.
patent: 3956622 (1976-05-01), Lyon

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