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Low-power CMOS polar modulator for multiband and multimode RF transmitter

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3 Author(s)
Paek, J.-S. ; Sch. of Eng., Korea Adv. Institude of Sci. & Technol., Daejeon, South Korea ; Lee, H.-Y. ; Hong, S.

A low-power polar modulator for a multiband and multimode RF transmitter is presented. The multimode capability of the modulator was tested with WCDMA and GSM/EDGE system requirements. The polar modulator consists of a saturated amplifier with a modulating current source which allows low power consumption. The multiband operation is obtained by tuning an LC output matching network.

Published in:

Electronics Letters  (Volume:46 ,  Issue: 14 )