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A fully CMOS transmitter including a power amplifier (PA) using a Cartesian Feedback (CFB) technique is presented. This system aims at improving the linearity of the transmitter, designed in 65nm CMOS technology from STMicroelectronics, essentially the power amplifier linearity. This transmitter delivers a maximum output power of 23dBm. Thanks to this linearization technique, the ACPR has been improved...
This paper presents a 65 nm CMOS power amplifier (PA) using a coupled transformer. The PA is based on an original structure, called stacked folded fully differential structure (SFFDS). It is applied to the UMTS W-CDMA standard. The parallel SFFDS power amplifier provides 30.5 dBm of output power with 20% of power added efficiency (PAE) at 1.95 GHz. The output compression point (OCP1) is 27.5 dBm and...
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