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A switched-capacitor DSB to SSB converter using a recursive Hilbert transformer with sampling rate reduction

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2 Author(s)
J. G. R. C. Gomes ; COPPE, Univ. Federal do Rio de Janeiro, Brazil ; A. Petraglia

The implementation of a complete DSB/SSB converter using discrete components is presented. A switched capacitor structure has been chosen in order to allow CMOS implementation with small area and low power consumption. A Hilbert transformer has been used to implement efficient SSB modulation. The implementation of the Hilbert transformer through structurally IIR allpass transfer functions allows good dynamic range, small sensitivity to capacitance ratio errors and sampling rate reduction (decimation) by a factor of 2, which means lower power consumption. The input and output multipliers needed for modulation and demodulation are also SC structures. Experimental results for DSB to SSB conversion are presented

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Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on  (Volume:3 )

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