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This paper designs and implements an direct up-conversion mixer based on RF CMOS process, which can be used in the up-link radio frequency (RF) front-end of a 2.4 GHz wideband wireless system such as multimedia wireless sensor network (WSN). Firstly, Gilbert cell-based double-balanced structure is adopted in this design, which can effectively suppress the feed-through of the local oscillator (LO)...
Based on TSMC 0.18μm 1P6M RF CMOS process, a 4th-order Butterworth analog low-pass filter (LPF) used in the transmitting link of 2.4GHz Wireless Sensor Network (WSN) radio frequency (RF) front-end is designed in this paper. In this design, active-gm-RC structure is derived, and it can achieve the same low consumption performance as the gm-C structure while have better linearity than that of the gm...
Mixer is one of the main modules of a transmitter system, and its performance will heavily impact the functionality of the entire transmitter. Gilbert cell structure can achieve high degree of RF (Radio Frequency) and LO (Local Oscillator) isolation, thus loosening filtering output requirements. This design employs a resonant LC network as the load to improve gain, increase the output voltage swing,...
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