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A CMOS down-conversion folded mixer for the radio frequency (RF) applications is presented. The proposed mixer composes of frequency doubling circuits, transconductance stages, and folded switching stages. With input 1.9 GHz RF signals of -40 dBm driven by 0.948 GHz local oscillation (LO) signals of 0 dBm, the mixer shows a good performance in both the high linearity and the low power consumption...
This article examines new nonlinearity considerations for higher blocking margins in DVB-T and UMTS receivers for test cases having at least one modulated blocker. It will be shown that the 3rd-order inter-modulation (IM) products due to adjacent channel and in-band modulated blockers can be analyzed individually, allowing the various receiver requirements to be met optimally. For UMTS, the adjacent...
This paper surveys conventional to modern TV tuner architectures and discuss the system level and circuit level designs of silicon tuners for mobile TV applications. It will then focus on recently developed techniques that break the trade-off between power consumption and performance (linearity or noise figure) of the silicon tuners.
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