A Low-Noise Amplifier for 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 defined to fulfill the NF,input impedance and power-gain requirements for an UWB receiver.To ensure circuit stability,frequency compensation is done by means of a phantom zero and the addition of a transistor connected between input and output,thus realizing a multipath structure.The design targets UMC 0.13um CMOS technology and operation from a 1.2V supply.From simulations,the power gain amounts to 17dB,and the BW spans up to 12GHz.S11 is below -10dB up to 10GHz and the NF is below 3dB up to 8GHz,and below 4dB@10GHz.The power consumption equals 14mA.
A UWB CMOS 0.13μm low-noise amplifier with dual loop negative feedback
SETTI, Gianluca;
2008
Abstract
A Low-Noise Amplifier for 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 defined to fulfill the NF,input impedance and power-gain requirements for an UWB receiver.To ensure circuit stability,frequency compensation is done by means of a phantom zero and the addition of a transistor connected between input and output,thus realizing a multipath structure.The design targets UMC 0.13um CMOS technology and operation from a 1.2V supply.From simulations,the power gain amounts to 17dB,and the BW spans up to 12GHz.S11 is below -10dB up to 10GHz and the NF is below 3dB up to 8GHz,and below 4dB@10GHz.The power consumption equals 14mA.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
