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A high-gain gate-pumped down-conversion mixer at 60 GHz is realized in a standard 90-nm CMOS process. The proposed mixer adopted a Darlington cell and a microstrip-line Lange coupler to yield wide 3-dB bandwidth from 5 to 65 GHz. The measured performance demonstrates a conversion gain (CG) of 6 dB at 4.2-mW power consumption. The maximum CG is 6.5 dB at 36(More)
In the past decades, the Internet usage has increased dramatically. For the network security, the network packet filtering is an important strategy to identify malicious network packets. However, malicious attacks spread much faster than network administrators can respond. The software-only implementations of filter are unlikely to meet the performance(More)
This paper proposes a 2.4 GHz SiGe HBT differential power amplifier (PA) with a novel on-chip variable gain active predistorter (PD) for linearity enhancement. The fully differential active PD provides an open collector adaptive bias control which can effectively enhance the linearity while improve power added efficiency (PAE). The PA with active PD(More)
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