Electronically Tunable Current-mode High-order Ladder Low-pass Filters Based on CMOS Technology
Alternativní metriky PlumXhttp://hdl.handle.net/11012/51898
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This paper describes the design of current mode low-pass ladder filters based on CMOS technology. The filters are derived from passive RLC ladder filter prototypes using new CMOS lossy and lossless integrators. The all-pole and Elliptic approximations are used in the proposed low-pass filter realizations. The proposed two types of filter can be electronically tuned between 10kHz and 100MHz through bias current from 0.03µA to 300µA. The proposed filters use 1.5 V power supply with 3 mW power consumption at 300 µA bias current. The proposed filters are resistorless, use grounded capacitors and are suitable for further integration. The total harmonic distortion (THD) of the low-pass filters is less than 1% over the operating frequency range. PSPICE simulation results, obtained by using TSMC 0.18µm technology, confirm the presented theory.
Typ dokumentuRecenzovaný dokument
Zdrojový dokumentRadioengineering. 2015 vol. 24, č. 4, s. 974-987. ISSN 1210-2512
- 2015/4