Abstract
This paper presents the design of a low noise amplifier (LNA) for the ultra wideband (UWB) signals which lies in the frequency range 3.1–10.6 GHz. This method uses resistive feedback gain enhanced noise cancelling technique. It is an inductor less LNA design which consumes less power and improves the noise Fig. By using this technique, we achieve a power gain of 10.7 dB, a noise Fig. of 2.2 dB at 4.8 GHz and an IIP3 of −2.9 dBm. The power consumed by the circuit is 8.3 mW. The simulated results demonstrate that the proposed LNA has the largest bandwidth, the lowest power consumption and lowest noise Fig. among the inductorless wideband LNAs found in the literature.
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