A complex array multiplier using distributed arithmetic

The design of an efficient array architecture for the multiplication of complex numbers applying distributed arithmetic is presented. The complex multiplier takes an area just over that of two real multipliers and its speed is almost the same as a single real multiplier. The texture of the design is obtained by an in-depth examination of a real multiplier structure with data in the off-set binary representation. Residue error compensation and the functional requirement of various boundary cells, such as negative weight addition, are discussed in detail. VHDL module with generic parameters has been written and successfully simulated, which enable the complex multiplier module to be included in large designs with required word-lengths for both operands. A test chip has been implemented with a standard library in 0.8 μm CMOS process and fabricated