نویسندگان
1 دانشگاه بیرجند، عضو هیئت علمی گروه الکترونیک، دکترای الکترونیک
2 دانشگاه بیرجند، کارشناسی ارشد برق الکترونیک
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
In this paper, a wideband two-stage low-noise amplifier (LNA) is presented. The proposed architecture achieves wideband matching, low noise figure and high flat gain simultaneously by employing a negative-positive feedback technique. A common-gate input stage exploits a gm-boosting technique to achieve noise-reduction. In addition, a positive transformer feedback is used to add a degree of freedom in determining the transconductance of the impedance matching transistor. The proposed LNA has been designed and simulated using TSMC 0.18-μm standard RF CMOS process. Simulation results show that LNA achieves a return loss (S11) of below -10 dB, a noise figure (NF) of 2.6–3 dB, a flat power gain (S21) of 18±0.5 dB, and an IIP3 of 7 dBm, over a bandwidth of 6.5–10.5 GHz. Designed LNA consumes 8 mW from a low power supply of 0.85 V.
کلیدواژهها [English]