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2015•IEEE Transactions on Terahertz Science and TechnologyRequires access

A Trimmable Cascaded Distributed Amplifier With 1.6 THz Gain-Bandwidth Product

David Fritsche, Gregor Tretter, Corrado Carta, Frank Ellinger

Open publisher page 34 citations

Abstract

This letter presents a distributed amplifier fabricated in a 0.13- μm SiGe BiCMOS technology for applications with large bandwidth requirements. The main design goals of large bandwidth and high gain are achieved by cascading three bandwidth-optimized traveling-wave amplifier stages. The termination resistance variations, which have large influence on the gain, are compensated by implementing electrically trimmable resistors. Measurements of the amplifier trimmed for optimum gain flatness show a gain of 18.7 dB over a 3-dB bandwidth of 180 GHz. To the authors' best knowledge, the resulting gain-bandwidth product of 1.6 THz is the highest reported to date.

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What this paper is about

This letter presents a distributed amplifier fabricated in a 0.13- μm SiGe BiCMOS technology for applications with large bandwidth requirements. The main design goals of large bandwidth and high gain are achieved by cascading three bandwidth-optimized traveling-wave amplifier stages. The termination resistance variations, which have large influence on the gain, are compensated by implementing electrically trimmable resistors. Measurements of the amplifier trimmed for optimum gain flatness show a gain of 18.7 dB over a 3-dB bandwidth of 180 GHz. To the authors' best knowledge, the resulting gain-bandwidth product of 1.6 THz is the highest reported to date.

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OpenAlex reports 34 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

This letter presents a distributed amplifier fabricated in a 0.13- μm SiGe BiCMOS technology for applications with large bandwidth requirements. The main design goals of large bandwidth and high gain are achieved by cascading three bandwidth-optimized traveling-wave amplifier stages. The termination resistance variations, which have large influence on the gain, are compensated by implementing electrically trimmable resistors. Measurements of the amplifier trimmed for optimum gain flatness show a gain of 18.7 dB over a 3-dB bandwidth of 180 GHz. To the authors' best knowledge, the resulting gain-bandwidth product of 1.6 THz is the highest reported to date.

Key concepts: Fully differential amplifier, Gain–bandwidth product, Distributed amplifier, Bandwidth (computing), Open-loop gain, Amplifier, Resistor, Power bandwidth

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