Variable delay device

Abstract From the Canadian patent

A variable delay device includes a variable delay circuit (12) and a correction circuit (14). On the basis of output signals R and V from variable delay lines (30, 32) of the correction circuit an output, signal V L by which a control characteristic of a variable delay line (16) is made substantially linear is outputted to the variable delay circuit from a linearity detector (34) of the correction circuit. The output signals R and V are also applied to a variable range detector (36), and on the basis of an output of the detector (36), an output signal V r by which a variable range of the variable delay line (16) is made constant is outputted to the variable delay circuit (12) from a …