A 2.5dB NF direct-conversion receiver front-end for HiperLAN2/IEEE802.11a
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A voltage-voltage feedback, frequency-tunable LNA and I&Q variable-gain mixers are realized in a 0.25/spl mu/m SiGe BiCMOS technology. The front-end, suitable for multi-standard applications, shows the following performance in the 4.9 to 5.825GHz band: 31.5dB gain, 2.5dB NF, -9.5dBm IIP3, and 23dBm IIP2 while drawing 16mA from 2.5V.
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