Low Power Wideband Noise Amplifier for 1GHz to 10GHz Wireless Application

A low power wideband noise amplifier (LNA) for 1GHz to 10GHz wireless has presente d for wireless application in this dissertation work. Low power wideband noise amplifier is design by using resistive shunt feedback, curren t reuse, gain flatting techniques, and inductive feedback technique. The high mobility electron transistors are used to improve the Noise Figure (NF) and scattering parameter of the amplifier. Resistive shunt feedback is used to gives the stability of amplifier. The proposed amplifier included input and out matching network. This proposed amplifier gives wideband impeda nce matching. The current reuse gives doubling the effective transconductance without any extra power consumption or deterioration of output conductance. The current reuse technique gives the best performance for low power and low voltage application. A cu rrent reuse scheme is used to lower the power consumption along with inductive series peaking in the feedback path to boost the impedance bandwidth. The Inductive series peaking technique use to enhance the gain, input matching and noise performance. The l ow noise amplifier is a necessary element in a wideband communication system. The overall performance of low power noise amplifier is analyzed by power consumption, noise figure, S 11 parameter, and also compared with the other works. The resonance theory a nd dc analysis are used for designing the elements of amplifier. The LT spice Simulator and spice coding are used to design and simulation of proposed amplifier. The simulation work is carried out by three analysis, AC analysis, noise analysis and transient analysis. The AC analysis is a small signal analysis in the frequency domain. A low power wideband noise amplifier would be preferred in wireless communication GSM, GPS for giving high stability.