Patent ID: 8054908

Claim:
A transmitter circuit transmitting data by using an impulse, comprising: a variable delay circuit taking a clock as an input, and delaying said clock in accordance with said data; and a logic circuit taking said clock and an output of said variable delay circuit as inputs, and outputting an impulse by performing a logic operation between said clock and the output of said variable delay circuit, wherein a delay time to be introduced by said variable delay circuit is determined according to whether said data represents a first value or a second value, when said data represents the first value, no signal is output, but when said data represents the second value, a signal is output, when said data represents the first value, said delay time in said variable delay circuit is set equal to an integral multiple [N/fc] of the reciprocal of a center frequency [fc] of an operating frequency band, and when said data represents the second value, said delay time is set equal to a value [1/(2fc)+M/fc] which represents a sum between an integral multiple of the center frequency [fc] of said operating frequency band and the reciprocal of one half of said center frequency (where N and M are arbitrarily taken independent natural numbers).