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An 8 GHz Variable Gain Low Noise Amplifier (VGLNA) Utilizing Parallel Inter-Stage Resonance

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4 Author(s)
Lee, L. ; Dept. of Electr. & Electron. Eng., Univ. Putra Malaysia, Serdang ; Jamuar, S.S. ; Sidek, R.M. ; Khatun, S.

A two-stage variable gain low noise amplifier (VGLNA) topology is proposed, which adopts a parallel interstage resonance. The characteristics of the parallel inter-stage resonance in gain enhancement are analyzed and this is then followed by the application of a simple circuit consisted of two transistors as the variable gain stage. The VGLNA is designed and simulated based on a 0.18 mum CMOS technology for 8-GHz X-band applications. Simulation results show 13.63 dB of power gain, 3.60 dB of noise figure, 4.27 dBm of IIP3 and dc power supply of 1 V with 35.67 mA current drawn

Published in:

Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on

Date of Conference:

4-7 Dec. 2006