Title :
A 230 MHz 8 tap programmable FIR filter using redundant binary number system
Author :
Baik, Sung-Ho ; Kyung-Nam Han ; Yoon, Euisik
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea
Abstract :
A high performance FIR (Finite Impulse Response) filter using RB (Redundant Binary) number system is designed. In the past, FIR filters were implemented by NB (Normal Binary) number system; therefore, the speed was limited due to carry propagation. We realize a fast FIR filter by utilizing the carry-free property of the RB system. A RBPP (RB Partial Product) generator circuit is devised without Booth´s algorithm, so that the delay and complexity of the filter is reduced. The serious demerit of the RB system, RB-to-NB conversion delay, is effectively overcome by utilizing a pipeline architecture. The 8 tap programmable FIR filter is designed with this architecture. The chip is fabricated by using 0.65 μm CMOS with 2-metal technology. The active area size is 2.6 mm×2.6 mm and the number of transistor is 27,000. The operating frequency is 230 MHz under the condition of 5 V supply voltage
Keywords :
CMOS digital integrated circuits; FIR filters; digital filters; high-speed integrated circuits; pipeline processing; programmable filters; redundant number systems; 0.65 micron; 230 MHz; 5 V; eight tap FIR filter; fast FIR filter; partial product generator circuit; pipeline architecture; programmable FIR filter; redundant binary number system; two-metal CMOS technology; Adders; CMOS technology; Circuits; Delay effects; Delay systems; Difference equations; Finite impulse response filter; Niobium; Pipelines; Signal processing algorithms;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.778873
