Title :
Reducing distortion in microwave analogue to digital converters
Author :
Kikkert, C.J. ; Bigdeli, A.
Author_Institution :
Electr. & Comput. Eng., James Cook Univ., Townsville, Qld., Australia
Abstract :
It is now possible to digitise microwave signals using 8 bit ADCs and sampling frequencies in excess of 1 GHz. This opens up new opportunities for the measurement and analysis of these broadband signals, however an 8 bit ADC has a very limited dynamic range. This paper discusses Additive Dither and Frequency Shift Dither techniques which can be used to extend the dynamic range of the ADC and it describes how this can be implemented in hardware
Keywords :
analogue-digital conversion; electric distortion; microwave circuits; 1 GHz; 8 bit; additive dither; broadband signal; distortion; dynamic range; frequency shift dither; microwave analogue-to-digital converter; sampling frequency; Additive noise; Analog-digital conversion; Circuit simulation; Digital signal processing; Dynamic range; Frequency; Noise cancellation; Noise level; Sampling methods; Signal analysis;
Conference_Titel :
Microwave Conference, 2000 Asia-Pacific
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6435-X
DOI :
10.1109/APMC.2000.925860
