Title :
Continuous-Time Current-Mode Current Mirror Band Pass Filters with Improved Leap-Frog Structure
Author :
Chunyue Wang ; Rong Zhao
Author_Institution :
Inst. of Telecommun., Univ. Changchun, Changchun
Abstract :
In this paper, the characteristics of the basic current mirror and the continuous-time current-mode current mirror integrator are analyzed. Using the two unlossy loop integrators and the basic current mirrors, the biquad circuit block is implemented. The signal flow graph (SFG) and the improved leap-frog (ILF) structure are simple to implement the six-order band pass filters. Exploring PSPICE9.1 simulation in 0.18 mum CMOS technology, Transistor lever circuit is carried out and results show that the proposed circuit is feasible. The design method of biquad block circuits is apt to realize the high-order band-pass filter and elliptic function filter.
Keywords :
CMOS integrated circuits; SPICE; band-pass filters; continuous time filters; current mirrors; flow graphs; CMOS technology; PSPICE9.1; Transistor lever circuit; biquad circuit block; continuous-time current-mode current mirror band pass filters; elliptic function filter; high-order band-pass filter; leap-frog structure; signal flow graph; six-order band pass filters; Band pass filters; CMOS technology; Capacitance; Circuit simulation; Circuits and systems; Design methodology; Flow graphs; MOSFETs; Mirrors; Signal processing; Integrator; Leap-frog structure; biquad circuit; current mirror; filter;
Conference_Titel :
Image and Signal Processing, 2008. CISP '08. Congress on
Conference_Location :
Sanya, Hainan
Print_ISBN :
978-0-7695-3119-9
DOI :
10.1109/CISP.2008.182
