Wideband Low Noise Amplifier Design for 2.3–2.4 GHz WiMAX Application

This paper describes the design of a low noise amplifier using negative feedback topology for WiMAX 2.3–2.4 GHz base station application. The negative topology employs an enhancement mode feedback inductor and advanced GaAs PHEMT transistor which yields excellent performance on the critical RF parameters such as noise, gain and linearity. By using the negative feedback topology the design is compact and uses fewer components compared to other state-of-art wideband low noise amplifier designs. The low noise amplifier has been designed on a Rogers 4003C substrate PCB and produced a gain of 12 dB, noise less than 0.7 dB and IIP3 greater than 13 dBm. The design is also matched at both input and output for 50 Ω and proven to be unconditionally stable across the frequency range.

[1]  N. M. Noh,et al.  Wideband low noise amplifier design for software defined radio at 136 to 941 MHz , 2012, 2012 4th International Conference on Intelligent and Advanced Systems (ICIAS2012).

[2]  Ce-Jun Wei,et al.  Capacitance and RF-conductance/transconductance look-up table based pHEMT model , 2011, Asia-Pacific Microwave Conference 2011.

[3]  Yann Deval,et al.  Design of a 0.9 V 2.45 GHz Self-Testable and Reliability-Enhanced CMOS LNA , 2008, IEEE Journal of Solid-State Circuits.

[4]  N. M. Noh,et al.  Wideband LNA design for SDR radio using balanced amplifier topology , 2012, 2012 4th Asia Symposium on Quality Electronic Design (ASQED).

[5]  Marco Carminati,et al.  Ultra-low-noise CMOS current preamplifier from DC to 1 MHz , 2009 .

[6]  Yang Wei-ming,et al.  The design of SiGe HBT balanced broadband low noise amplifier , 2008, 2008 International Conference on Microwave and Millimeter Wave Technology.

[7]  Huda Abdullah,et al.  A compact, balanced low noise amplifier for WiMAX base station applications , 2010 .

[8]  Shey-Shi Lu,et al.  Wideband low-noise amplifier by LC load-reusing technique , 2009 .

[9]  Jenshan Lin,et al.  A Packaged and ESD-Protected Inductorless 0.1–8 GHz Wideband CMOS LNA , 2008, IEEE Microwave and Wireless Components Letters.

[10]  G. Gonzalez.  Microwave Transistor Amplifiers: Analysis and Design , 1984 .

[11]  Samuel Y. Liao,et al.  Microwave Circuit Analysis and Amplifier Design , 1986 .

[12]  Bram Nauta,et al.  A wideband noise-canceling CMOS LNA exploiting a transformer , 2006, IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, 2006.

[13]  Sui Wenquan,et al.  A low power 2.5-5 GHz low-noise amplifier using 0.5-μm GaAs pHEMT technology , 2012 .

[14]  C. Nguyen,et al.  Low-power-consumption and high-gain CMOS distributed amplifiers using cascade of inductively coupled common-source gain cells for UWB systems , 2006, IEEE Transactions on Microwave Theory and Techniques.