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Abstract : |
A CMOS IF bandpass filter for an integrated Bluetooth receiver is presented. The filter center frequency and bandwidth are 3 MHz and 1 MHz, respectively. The filter is based on unity gain fully differential voltage buffers and utilizes linearized MOS transistors for tuning. This technique provides a simplified, low power, small area design solution for the filter implementation. The proposed 18/sup th/-order filter occupying an area of 1.44 mm/sup 2/ was submitted for fabrication using 0.5-/spl mu/m standard CMOS process. Simulation results obtained from the layout circuit file show that the proposed filter satisfies the selectivity and dynamic range requirements of Bluetooth using a total supply current of 900 /spl mu/A., |
