Design of radio frequency passive polyphase filter for 2.4 GHz wireless communication applications

Polyphase filters are an efficient solution for high image rejection and great accuracy quadrature generation in radio frequency (RF) receivers. Analytical modeling of passive polyphase filter suitable for RF front-end applications operating in 2.4 GHz frequency band is dealt with. This analytical analysis has been used to calibrate the optimal values of passive components in order to obtain the maximum image rejection ratio (IRR). Component matching techniques has been taken into account during the layout process. Tunable RC polyphase network has been fabricated in 0.13-µm CMOS technology.

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