Design High Gain PHEMT LNA for Wireless Application at 5.8 GHz

Pongot K, Ahmad A, Othman A.R, Zakaria Z, Suaidi M.K, Hamidon A.H, Hamidon J.S

Abstract


This research present a design of a higher gain (68.94dB) for PHEMT LNA using an inductive drain feedback technique for wireless application at 5.8GHz. The amplifier it is implemented using PHEMT FHX76LP transistor devices. The designed circuit is simulated with Ansoft Designer SV. The LNA was designed using inductive drain feedback, inductive generation to the source, and the T-network as a matching technique was used at the input and output terminal. The low noise amplifier (LNA) provides a noise figure 0.64 dB and gain (S21) of 68.94 dB. The output reflection (S22), input reflection (s11) and return loss (s12) are -17.37 dB, -15.77 dB and -88.39 dB respectively. The measurement shows the stability were at 4.54 and 3-dB bandwidth of 1.72 GHz. The input sensitivity is -92 dBm exceeded the standards required by IEEE 802.16.

Keywords


IEEE 802.16; Cascaded and Cascoded LNA; Inductive drain feedback, PHEMT LNA

References


S. Lowe, 2007. “LTE vs WiMAX” in Hot Topics Forum: LTE vs WiMAX And Next Generation Internet, Institution of Engineering and Technology, 2007, pp. 1 –38.

A. R. Othman, A. B. Ibrahim, M. N. Husain, A. H. Hamidon, and Jsam Hamidon, 2012 . Low Noise Figure of Cascaded LNA at 5.8 GHz Using T- Matching Network for WiMAX Applications. International Journal of Innovation, Management and Technology, Vol. 3, No. 6.

Abdulrahman Yarali., 2008. WiMAX: The Innovative Broadband Wireless Access Technology”, Journal Of Communications, Vol. 3, No. 2 .

Othman A. R, Hamidon A. H, Abdul Wasli. C, Mustaffa M. F, Ting J. T. H, Ibrahim A.B, 2010. Low Noise, High Gain RF Front End Receiver at 5.8GHz for WiMAX Application.”. Journal of Telecommunication and Computer Engineering.

Somesh Kumar, Ravi Kumar., 2012. A 1.8V and 2GHz Inductively degenerated CMOS Low Noise Amplifier”, International Journal of Electronics Communication and Computer Technology ,Vol.2, Issue 4.

M.Pozar, David., 2001. Microwave and RF Wireless System. Third Avenue,N.Y.John Wiley & Sons.

Abu Bakar Ibrahim, Abdul Rani Othman, Mohd Nor Husain, and Mohammad Syahrir Johal, 2011. Low Noise, High Gain LNA at 5.8GHz with Cascode and Cascaded Techniques Using T-Matching Network for Wireless Applications. International Journal of Information and Electronics Engineering, Vol. 1, No. 2,.

Leon, Michael Angelo G. Lorenzo and Maria Theresa G.De., 2010. Comparison of LNA Topology for Wimax Application in a Standard 90- nm CMOS Process. 12th International Conference on Computer Modelling and Simulation. pp-642-647.

Sobhy, E.A.; Helmy, A.A.; Hoyos, Sebastian; Entesari, K.; Sanchez- Sinencio, E., 2011. A 2.8-mW Sub-2-dB Noise-Figure Inductorless Wideband CMOS LNA Employing Multiple Feedback," Microwave Theory and Techniques, IEEE Transactions on , vol.59, no.12, pp.3154,3161.

S.Karpagam, P.Sampath., 2013. A 1.8GHz Differential Low Noise Amplifier for Wireless Receivers. International Journal of Engineering Trends and Technology, Vol. 4, Issue 4.


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