We present a new architecture for signed multiplication which maintains the pure form of an array multiplier, exhibiting a much lower overhead than the Booth architecture. This architecture is extended for radix-2^m encoding, which leads to a reduction of the number of partial lines, enabling a significant improvement in performance and power consumption. The flexibility of our architecture allows for the easy construction of multipliers for different values of m, as opposed to the Booth architecture for which implementations for m < 2 are complex. The results we present show that the proposed architecture with radix-4 compares favorably in performance and power with the Modified Booth multiplier. We have experimented our architecture with different values of m and concluded that m = 4 minimizes both delay and power.