Patent ID: 7678053
Filing Date: 2010-03-16
Classification: A61B,G01S,H03H

Abstract:
1. A delay adding device comprising: a plurality of amplifier circuits each configured to generate a signal and an antiphase signal, the signal having a first wavelength and the antiphase signal having a second wavelength that is offset from the first wavelength by one-half of the first wavelength; and an analog delay line comprising a plurality of taps, each tap of the plurality of taps electrically coupled to a respective amplifier circuit for transmitting an input signal to the analog delay line, the analog delay line configured to delay and add a plurality of continuous signals, wherein the analog delay line has a maximum delay amount equivalent to a wavelength between three-eighths of a predetermined maximum wavelength of the input signal and the predetermined maximum wavelength, the analog delay line comprising a first set of tap intervals before a delay point and a second set of tap intervals subsequent to the delay point, the delay point at one-half of a predetermined minimum wavelength of the input signal, the second set of tap intervals different than the first set of tap intervals, and wherein the signal is applied to the first set of taps and the antiphase signal is applied to the second set of taps.