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A single-chip 1.8 GHz image reject RF receiver front-end with boot-strapped inductors

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5 Author(s)
Di Pascoli, S. ; Dipt. di Ingegneria dell''informazione, Pisa Univ., Italy ; Fanucci, L. ; Giusti, F. ; Neri, B.
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A fully integrated RF front-end for 1.8 GHz wireless receiver is presented. The circuit is based on a single-conversion heterodyne architecture with a band-pass low noise amplifier and an image-reject mixer. Bootstrapped inductors are used to realize the high quality factor inductors of the tunable LC active filters in the variable gain low noise amplifier. The front-end, which has been designed for a 50 GHz bipolar process, presents an overall image-rejection greater than 62 dB at 100 MHz of intermediate frequency. The main characteristics of this design are a gain of 17.3 dB, a bandwidth of 45 MHz, a linearity range up to -20 dBm, a power consumption of 120 mW, a low area on die and a low cost, since no external components in the RF and IF signal paths are needed.

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Electronics, Circuits and Systems, 2002. 9th International Conference on  (Volume:1 )

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