A Low Power UWB-LNA using Active Dual Loop Negative Feedback in CMOS 0.13µm
نویسندگان
چکیده
A low noise amplifier for UWB and broadband applications is presented. The active dual loop negative feedback architecture dissevers the severe tradeoff existing between the input impedance, gain and noise figure, and produces a flat S11 across the entire band. The L#A is composed of a voltage amplifying negative feedback amplifier with a transconductance amplifier forming a shunt-shunt feedback around it, thereby tailoring the input impedance with respect to the gain settings of the first amplifier. The values of the resistive feedback elements have been chosen such that they fulfill the requirements of gain, input impedance, noise figure and linearity. The design has been carried out in TSMC 0.13um CMOS Technology. From circuit simulations, the average gain of the L#A across 2-7GHz is 13dB. The noise figure is below 4dB with a minimum of 2.9dB. S11 is below -15dB for the entire frequency band. The design employs a DC-current re-use scheme to reduce the power consumption. The L#A draws 5.6mA from a 1.2V supply.
منابع مشابه
A UWB CMOS 0.13µm low-noise amplifier with dual loop negative feedback
A Low-Noise Amplifier for ultra wide band (UWB) applications is presented. The use of a dual-loop negative feedback topology is advantageous, since it allows to achieve both impedance matching and a very low noise figure, and saves a lot of chip area as no bulky inductors are needed. A nullor and a resistive feedback network are employed, and the values of the feedback elements involved are def...
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