Patent ID: 7982663
Filing Date: 2011-07-19
Classification: G01S,H01Q

Abstract:
1. A digital signal processor for controlling an analog circuit device comprising: a first digital register for storing a first digital value in accordance with which said analog circuit device is controlled; a second digital register for storing a second digital value; an adder for generating a correction command value by adding said first digital value and said second digital value, and outputting said correction command value to said analog circuit device; a polarity determining circuit which outputs a first signal when an analog DC voltage at a reference correction point in said analog circuit device is higher than a predetermined threshold value and outputs a second signal when said analog voltage is lower than or equal to said predetermined threshold value; and an updating function of varying said second digital value stored in said second digital register in accordance with output of said polarity determining circuit; said updating function being configured to monotonously increase or decrease said second digital value while a predetermined one of said first and second signals is outputted from said polarity determining circuit, wherein said correction command value is data for controlling a phase of an output of a high-frequency phase shifter included in said analog circuit device, said correction reference point being one of an output terminal of said high-frequency phase shifter and an output terminal of a mixer inputted with said output of said high-frequency phase shifter and a reference high-frequency wave.