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A highly integrated 0.13um CMOS direct conversion transmitter front-end for wide-band code division multiple access (WCDMA) is presented. The transmitter delivers +6.8dBm output power while consuming 39mA. The overall gain can be programmed in 6dB steps over a 66dB range with 0.1dB accuracy. The transmitter front-end achieves an OIP3 with +19.2dBm, an error vector magnitude of 3.7%, and an adjacent...
A 3-5 GHz low power amplitude and spectrum tunable BPSK modulated impulse radio UWB transmitter is designed with SMIC 0.13 um CMOS technology. IR-UWB is a carrier-less system. It has the advantage of low power and low complexity, but it has difficulty in controlling the spectrum. In this design the amplitude and spectrum of the output impulse are both tunable to fix this problem. The simulation results...
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