| Title |
Design of a Dual Mode Baseband Filter Using the Current-Mode Integrator |
| Authors |
김병욱(Kim, Byoung-Wook) ; 방준호(Bang, Jun-Ho) ; 조성익(Cho, Seong-Ik) ; 최석우(Choi, Seok-Woo) ; 김동용(Kim, Dong-Yong) |
| Keywords |
Current-Mode ; Integrator ; Baseband Filter ; CMOS Analog ; Low-Voltage Filter |
| Abstract |
In this paper, a dual mode baseband analog channel selection filter is described which is designed for the Bluetooth and WCDMA wireless communications. Using the presented current-mode integrator, a dual mode channel selection filter is designed. To verify the current-mode integrator circuit, Hspice simulation using 1.8V Hynix 0.18{\mu}m standard CMOS technology was performed and achieved 50.0{\sim}4.3dB gain, 2.29{\sim}10.3MHz unity gain frequency. The described third-order dual mode analog channel selection filter is composed of the current-mode integrator, and used SFG(Signal Flow Graph) method. The simulated results show 0.51, 2.40MHz cutoff frequency which is suitable for the Bluetooth and WCDMA baseband block each. |