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A Low Power Folded RF Front-end with Low Flicker Noise for Direct Conversion Receiver

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3 Author(s)
Eun-Pyo Hong ; School of Engineering, the Information and Communications University, Korea, E-mail: ; Yong-Seok Hwang ; Hyung-Joun Yoo

This paper presents the implementation and performance measurements of RF front-end to reduce the flicker noise and power consumption in TSMC 0.18 mum process for 2.4 GHz ISM band. The proposed RF front-end is composed of folded mixers and differential low noise amplifiers (LNA). Gilbert-cell mixers using the folded technique have been designed for low flicker noise and low power consumption. The proposed RF front-end is implemented by using PMOS devices in switching stage of mixers with a resonating inductor for low flicker noise. The proposed RF front-end consumes 7.34 mW from 1.2 V supply voltage, while conversion gain of 23 dB is achieved. The IIP3 is -7.4 dBm, and the proposed RF front-end has good linearity. Flicker noise of 10 dB at 1 kHz is acceptable value, and thus proposed RF front-end can be used in direct conversion receiver for a narrow bandwidth.

Published in:

Electron Devices and Solid-State Circuits, 2007. EDSSC 2007. IEEE Conference on

Date of Conference:

20-22 Dec. 2007