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This letter presents an L-band highly linear differential low noise amplifier (LNA) in a standard 90-nm CMOS process. A wide range derivative superposition technique is proposed to maximize the third-order intercept point (IP3), and at the same time, minimize the third-order intermodulation distortion (IMD3) over a wide input power range. The LNA chip achieves a measured OIP3 of and...
This paper presents a wide band LNA for the IEEE 802.11 WLAN. The LNA uses two feedback paths to enhance linearity and in-band gain ripple. The −3 dB bandwidth is 4 GHz with center frequency of 4.7 GHz. The current reuse technique is utilized to reduce the power consumption and the noise figure (NF). Post-Layout simulation results demonstrate that the achievable input third-order intercept point (IIP3)...
In addition to LNA (low noise amplifier) noise figure, gain and input matching, its linearity is also an important consideration. An LNA must amplify signal without adding too much noise but also remain linear even when strong signals are received. In the narrowband LNA topology, good values of S-parameters and noise performance are achieved at the expense of linearity. In order to improve LNA linearity,...
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