Question

If the conversion technique is to be effective, the jΩ axis in the s-plane should map into the unit circle in the z-plane.

(a) True

(b) False

I have been asked this question in semester exam.

I'd like to ask this question from Design of IIR Filters from Analog Filters topic in chapter Digital Filters Design of Digital Signal Processing

Answer 1

Right answer is (a) True

The explanation is: If the conversion technique is to be effective, the jΩ axis in the s-plane should map into the unit circle in the z-plane. Thus there will be a direct relationship between the two frequency variables in the two domains.