Abstract :
The advanced filter bank analog-to-digital converter (AFB ADC) is a breakthrough approach to very high-speed, high-resolution analog-to-digital conversion which improves the speed of conversion by up to six times the state-of-the-art by using a parallel array of individual converters (patent pending). The AFB ADC uses multirate filter bank signal processing to improve performance. Because of its unique architecture, the AFB ADC is continuously upgradeable as new analog-to-digital converter chips become available, thereby maintaining its performance advantage. This paper describes the architecture and provides hardware prototype results for a 12-bit, 80 MSa/s system for use in a universal, software-reconfigurable radio frequency (RF) receiver for cellular, satellite, or military communications. A 14-bit, 325 MSa/s system is currently being developed
Keywords :
analogue-digital conversion; cellular radio; channel bank filters; digital filters; digital signal processing chips; military communication; radio receivers; signal resolution; 12 bit; 14 bit; advanced filter bank ADC; analog-to-digital converter; analog-to-digital converter chips; architecture; cellular communications; hardware prototype results; high-resolution analog-to-digital conversion; military communications; multirate filter bank signal processing; parallel array; satellite communications; software-reconfigurable RF receiver; universal RF receivers; very high-speed ADC; Analog-digital conversion; Array signal processing; Artificial satellites; Filter bank; Hardware; Military satellites; Radio frequency; Receivers; Satellite broadcasting; Software prototyping;
