  Ultraviolet finite quantum field theory on even dimensional noncommutative
spacetime is formulated using coordinate coherent states. 2d spacetime is
foliated into families of orthogonal, non commutative, two-planes. Lorentz
invariance is recovered if one imposes a single non commutative parameter theta
in the theory. Unitarity is checked at the one-loop level and no violation is
found. Being UV finite NCQFT does not present any UV/IR mixing.
