Title :
A study of the impact of microwave radiation on an A/D converter
Author :
Hwang, Myoung H. ; Kenneth, O.
Author_Institution :
Dept. of Electr. & Comput. Eng., Florida Univ., Gainesville, FL, USA
Abstract :
A 10-bit A/D converter with a maximum sampling rate of 60-mega-samples/sec (MSPS) (AD9051) has been radiated with microwaves at frequencies ranging from 15 to 20 GHz using a horn antenna with 20 dBi gain. The power level delivered to the antenna is varied from 10 to 19.4 dBm. ENOBδ (modified effective number of bits) is defined and used to characterize the impact of microwave radiation on the operation of A/D converters. For the A/D converter used in this study, despite its least significant bit of 1.23 mV, the radiation had no discernable impact This result suggests that A/D converters may not be extremely sensitive to microwave radiations as originally thought.
Keywords :
analogue-digital conversion; horn antennas; microwaves; radiofrequency interference; 15 to 20 GHz; A/D converter; AD9051; horn antenna; maximum sampling rate; microwave radiation; modified effective number of bits; Clocks; Electromagnetic interference; Integrated circuit noise; Microwave antennas; Optical transmitters; Packaging; Receiving antennas; Sampling methods; Signal to noise ratio; Transmitting antennas;
Conference_Titel :
Electromagnetic Compatibility, 2005. EMC 2005. 2005 International Symposium on
Print_ISBN :
0-7803-9380-5
DOI :
10.1109/ISEMC.2005.1513529
