A 3 – 14 GHZ LOW NOISE AMPLIFIER FOR ULTRA WIDE BAND APPLICATIONS
Vaithianathan Venkatesan1,*, Raja Janakiraman2 and Srinivasan Raj3 Aishwarya Prabakaran4 , Anupreethi Balaji Ranganathan5, Divya Santhanam6
1,4,5,6Department of Electronics and Communication Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, India
2Department of Electronics and Communication Engineering, Anna University of Technology, Tiruchirappali, India
3Department of Information Technology, Sri Sivasubramaniya Nadar College of Engineering, Chennai, India
ABSTRACT
This paper presents an ultra wide band (UWB) low noise amplifier (LNA) with very high gain, better input matching, low noise figure, better linearity and low power consumption. A dual source degenerated resistive current reuse is used as an input stage and a cascode stage with shunt-series peaking is used to enhance the bandwidth and reverse isolation. The proposed LNA achieves a peak power gain of 20.92 dB at 9 GHz while achieving a gain greater than 20.3 dB over 3 – 14 GHz bandwidth. The achieved noise figure is in the range of 3.72 – 4.78 dB, while the input matching and the output matching are kept below – 9 dB and –10 dB respectively. The reverse isolation is below –52 dB throughout the entire band. This LNA ensures better linearity with an IIP3 of 4 dBm at 9 GHz with very low power consumption of 5.876 mW at 1 V supply.
KEYWORDS
Dual Source Degenerated Current Reuse, Shunt-Series Peaking, Power Gain, Noise Figure, Input Third Order Intercept Point (IIP3)
Original Source Link : http://aircconline.com/vlsics/V3N1/3112vlsics12.pdf
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