| Title |
A Voltage-controlled Frequency Tunable CMOS Current-mode Filter for Software Radio |
| Authors |
방준호(Bang, Jun-Ho) ; 유인호(Ryu, In-Ho) ; 유재영(Yu, Jae-Young) |
| DOI |
https://doi.org/10.5370/KIEE.2011.60.4.871 |
| Keywords |
Current-mode integrator ; Chebyshev filter ; Continuous-time filter ; Voltage-controlled frequency ; Low-pass filter |
| Abstract |
In this paper, a voltage-controlled frequency tunable current-mode integrator and a 3rd-order current-mode Chebyshev filter in 1.8V-0.18μm CMOS is realized for software radio applications in system-on-chips. This filter is used for reconstruction purposes between a current-steering DAC and a current-mode mixer. Power consumption of the designed filter can be reduced by using a current-mode small size integrator. And also, cutoff frequency of this filter is variable between 1.2MHz and 10.1MHz, the power consumption is 2.85mW. And the voltage bias compensated circuit is used to control the voltage variation.in the designed filter. |