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An Ultra High Gain Low Power Folded cascode CMOS LNA at 1.5 GHz With the Gate Resistance Used for Input Matching

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Year: 2011
Present: پوستر
COI code: ISCEE14_041
Paper Language: English

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Authors An Ultra High Gain Low Power Folded cascode CMOS LNA at 1.5 GHz With the Gate Resistance Used for Input Matching

  Ehsan Kargaran - Young Researchers Club, Tabriz Branch, Islamic Azad University, Tabriz, Iran
Sahel Javahernia -
Leila Balaghi -


Design and simulated results of a fully integrated 1.5-GHz CMOS low-noise amplifier (LNA) is presented. To design this LNA, the parasitic input resistance of a metal-oxide-semiconductor field-effect transistor (MOSFET) is converted to 50Ω by a simple L–C network, hence eliminating the need for source degeneration. The Major Problem in the LNAs with folded cascode architecture is low reverse isolation. In this paper this parameter is improved by adding a transistor.The power gain and the minimal Noise Figure (NF) are two important factors for the circuits. Besides those factors, good linearity, input impedance matching, low supply voltage and the lower power consumption are also desired. The LNA achieves a small signal gain of 22.5 dB. The LNA acquires an NF of 2.6 dB with an input return loss of -17.2 dB and an output return loss of -16 dB. The LNA consumes 5.7 mW from a 0.8V supply, the presented LNA achieves the best overall performance when compared with the most recently published LNAs.


folded cascode architecture, parasitic input resistance ,low noise amplifier , noise figure , reverse isolation

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COI code: ISCEE14_041

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Kargaran, Ehsan; Sahel Javahernia & Leila Balaghi, 2011, An Ultra High Gain Low Power Folded cascode CMOS LNA at 1.5 GHz With the Gate Resistance Used for Input Matching, 14th Iranian Student Conference on Electrical Engineering, كرمانشاه, دانشگاه كرمانشاه, سازمان علمي دانشجويي مهندسي برق كشور, the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Kargaran, Ehsan; Sahel Javahernia & Leila Balaghi, 2011)
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The University/Research Center Information:
Type: Azad University
Paper No.: 10672
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