A 60GHz transformer coupled amplifier in 65nm digital CMOS

60 GHz 90nm CMOS wideband neutralized PA with 23dB gain and 20% PAE

“…We can see that the B BW of ~12GHz while pply. This 20% BW is ous publications [2][3][4][5]. wafer show negligible proving the MOScap roduction.…”

“…Due to the low breakdown voltage of advanced MOS transistors probably the most challenging component in this high frequency band is the PA. Recently we have seen PA designs with gain boosting by neutralization use [2][3]. An increase in gain per stage allows a reduction in the number of stages, creating a positive impact on the stability over PVT of the chain.…”

Advances in Silicon Based Millimeter-Wave Monolithic Integrated Circuits

“…In these two decades, the published works about MMW PAs are mainly about enhancement of output power and gain with power combining, reduction of passive components and neutralization of the parasitic capacitances with inductive components like transmission line, and the improvement of efficiency by linearization techniques [63][64][65][66][67][68][69][70][71][72].…”

Design of CMOS 60GHz Giga-bps communication system with CRLH T-line for high output power density and wide tuning range

“…The right-handed part of CRLH T-line comes from the Coplanar Waveguide (CPW) transmission line that connects unit cells, and parasitic capacitance between unit cells and ground.Figure 3.4(b) shows the layout version of this unit cell, where L p is a spiral inductor formed by top metal layer (M6). The thick metal ring around L p serves asground to improve isolation between unit cells and to form a better distribution of ground, as described in[59]. C s is a MOM capacitor constructed with multiple metal layers (M4-M6) in an inter-digit manner for better quality factor at 60GHz range.…”

“…For differential topology, neutralization technique has been widely used recently[59,[79][80][81] to neutralize the feedback signal by introducing a negative path from drain of one differential transistor to the gate of the other transistor. As shown inFig.…”