Title:
DIGITAL PHASE SHIFTER
Document Type and Number:
Japanese Patent JPS5232652
Kind Code:
A
Abstract:
In many digital processing systems it is necessary to delay an applied signal by a time interval which is not an integer multiple of the system sampling period. Disclosed herein is a digital phase shifter which utilizes a particular digital filtering scheme for supplying virtually any predetermined delay. Although conceptually related to the digital concepts of phase shift by interpolation and decimation in which the sampling rate is first increased and then restored to the original sampling rate after effecting the desired phase shift, the disclosed phase shifter operates entirely at the system sampling rate. This is accomplished by establishing a specific predetermined subset of digital filter coefficients and combining the coefficients with the input signal samples in a multiplier and accumulator circuit.
Inventors:
RONARUDO ERUDON KUROTSUSHIEERU
ROORENSU RICHIYAADO RABINAA
RICHIYAADO ROBAATO SHIBURII
ROORENSU RICHIYAADO RABINAA
RICHIYAADO ROBAATO SHIBURII
Application Number:
JP10590076A
Publication Date:
March 12, 1977
Filing Date:
September 06, 1976
Export Citation:
Assignee:
WESTERN ELECTRIC CO
International Classes:
H03H7/30; H03H11/16; H03K5/135; H03H17/08; H03K5/153; H04L7/02; (IPC1-7): H03H7/30; H03K5/153