43–68 GHz broad band low noise MMIC medium power amplifier

Wang, Chuang; Fusco, Vincent; Sun, Lingling

doi:10.1109/icct.2008.4716243

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Stability and Impedance Matching1

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2015

2023

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“…At lower frequencies R f controls the gain and minimizes the same to a level where a gain flatness is observed over an octave of bandwidth. The feedback networks also brings the input and output impedances of the device close to 50 Ohms and ensures that simple matching networks are required for impedance matching over wider bandwidth [7] [8].…”

Section: Stability and Impedance Matchingmentioning

confidence: 99%

Computer-aided-design of an 18–40 GHz MMIC low noise amplifier using RLC and series inductive feedback

Banerjee

Majumder

2015

2015 IEEE MTT-S International Microwave and RF Conference (IMaRC)

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This paper presents the design and development of a MMIC based broadband low noise amplifier using a GaAs based pHEMT of 0.15 μm gate length. A 3 stage cascaded amplifier configuration has been chosen for the design. Series inductive feedback and RLC feedback have been used simultaneously in order to achieve improved stability and gain flatness over the required bandwidth. The design, simulation and optimization are carried out using Agilent's Advanced Design System (ADS). A gain of 15.8+2dB and a maximum noise figure of 3.9 dB over a frequency band of 18-40 GHz have been achieved. The amplifier finds its application in Millimeter wave Imaging, Surveillance System, Wide-Band and UWB Radar, Space and TestInstrumentation.

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Section: Stability and Impedance Matchingmentioning

confidence: 99%