A 1.2-V Highly Linear Balanced Noise-Cancelling LNA in 0.13-$\mu{\hbox{m}}$ CMOS

The Blixer, a Wideband Balun-LNA-I/Q-Mixer Topology

“…4.22 and 4.23 of [10]). It cancels the noise of the CG transistor in order to obtain a noise figure (NF) close to or lower than 3 dB [3]- [6], [9], [11]- [13]. To achieve this low NF, the impedance of the CS stage needs to be scaled down times with respect to the CG stage, where is typically in the order of 4 (see Fig.…”

“…Similar as the noise, the distortion generated by the CG transistor is canceled [4], [5], [11] and the load resistors are linear. If the switch transistors are well switched, the mixer transistors convey the output current of the CG-CS stage to the output without much distortion (assuming is significantly lower than the somewhat nonlinear output impedance of the CG/CS transistors).…”

Ultra-wideband CMOS low-noise amplifier with active interferer rejection

“…The noise current of M 1 flows into R 1 , and L S induces an in-phase amplified noise current in R 2 by driving the gate of M 2 . If the resulting noise voltages at the two output terminals are equal, then M 1 's noise is common mode and is canceled by differential sensing [11].…”

A wideband LNA matched with quasi T-coil networks in 0.13 µm CMOS

“…Through analyzing the feedback mechanism provided by the transistor's intrinsic gate-drain capacitor and load, an LNA matched from [10][11][12][13][14][15][16][17][18][19][20] GHz was presented in [5]. Nowadays, the operating frequencies of most commercial devices (such as cell phone, GPS, and so on) range from a few hundred megahertz to multi gigahertz.…”