A New Ultra-Wideband Low Noise Amplifier With Continuous Gain Control

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BIJARI ABOLFAZL; Sheikhi Mahdi

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Journal: JOURNAL OF IRANIAN ASSOCIATION OF ELECTRICAL AND ELECTRONICS ENGINEERS Year:2019 | Volume:16 | Issue:2 Page(s): 47-55

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Title

A New Ultra-Wideband Low Noise Amplifier With Continuous Gain Control

Author(s)

BIJARI ABOLFAZL | Sheikhi Mahdi | Issue Writer Certificate

Keywords

Low noise amplifierQ1

Variable gainQ1

Active feedbackQ1

Ultra-widebandQ1

Abstract

This paper presents a new Variable gain Low noise amplifier (VG-LNA) for Ultra-wideband (UWB) applications. The proposed VG-LNA uses a common-source (CS) with a shunt-shunt Active feedback as an input stage to realize input matching and partial noise cancelling. An output stage consists of a gain-boosted CS cascode and a gain control circuit that moves the high resonant frequency to higher frequencies and provides flatness gain. The direct power gain (S21) is continuously controlled without significant degradation in the input return loss (S11) and noise figure. The proposed VG-LNA is designed and simulated using RF-TSMC 0. 18 μ m CMOS technology by Advanced Design System (ADS). Simulation results show a maximum flat power gain (S21) of 14 dB with a noise figure (NF) lower than 3. 6 dB and an input impedance matching (S11) less than – 10 dB over the wide bandwidth of 3. 5 to 13. 5 GHz. Its power consumption is 12 mW with low power supply of 0. 9 V. In addition, the power gain ranges from 7 to 14 dB at the center frequency of 8. 5 GHz.

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APA: Copy

BIJARI, ABOLFAZL, & Sheikhi, Mahdi. (2019). A New Ultra-Wideband Low Noise Amplifier With Continuous Gain Control. JOURNAL OF IRANIAN ASSOCIATION OF ELECTRICAL AND ELECTRONICS ENGINEERS, 16(2 ), 47-55. SID. https://sid.ir/paper/115649/en

Vancouver: Copy

BIJARI ABOLFAZL, Sheikhi Mahdi. A New Ultra-Wideband Low Noise Amplifier With Continuous Gain Control. JOURNAL OF IRANIAN ASSOCIATION OF ELECTRICAL AND ELECTRONICS ENGINEERS[Internet]. 2019;16(2 ):47-55. Available from: https://sid.ir/paper/115649/en

IEEE: Copy

ABOLFAZL BIJARI, and Mahdi Sheikhi, “A New Ultra-Wideband Low Noise Amplifier With Continuous Gain Control,” JOURNAL OF IRANIAN ASSOCIATION OF ELECTRICAL AND ELECTRONICS ENGINEERS, vol. 16, no. 2 , pp. 47–55, 2019, [Online]. Available: https://sid.ir/paper/115649/en

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