Wideband highly linear LNA using modified cascode for simultaneous input and noise matching technique

Seung Pyo Park; Moon Que Lee; Han Lim Lee

doi:10.1002/mop.30216

Wideband highly linear LNA using modified cascode for simultaneous input and noise matching technique

Seung Pyo Park, Moon Que Lee, Han Lim Lee

School of Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

In this letter, a highly linear low-noise amplifier (LNA) MMIC configured by a modified cascode structure with the operation band from 1.8 GHz to 2.8 GHz is proposed. The modified cascode structure adopts inductive degeneration and an additional transistor used for linearity enhancement and simultaneous input and noise matching. Also, the resistive feedback at the input and inductive peaking at the output are applied to ensure the stability over the wideband operation. The proposed LNA MMIC was implemented by 0.5μm GaAs pHEMT process and showed the measured input third-order intercept point (IIP3) of 15.5 ± 1.3 dBm, gain of 16.3 ± 2.2 dB, output P₁-dB of 16.7 ± 0.3 dBm and noise figure (NF) of 1 ± 0.2 dB from 1.8 GHz to 2.8 GHz.

Original language	English
Pages (from-to)	15-17
Number of pages	3
Journal	Microwave and Optical Technology Letters
Volume	59
Issue number	1
DOIs	https://doi.org/10.1002/mop.30216
State	Published - 1 Jan 2017

Keywords

RFIC/MMIC
amplifier linearization
low-noise amplifier
simultaneous input and noise matching

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10.1002/mop.30216

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title = "Wideband highly linear LNA using modified cascode for simultaneous input and noise matching technique",

abstract = "In this letter, a highly linear low-noise amplifier (LNA) MMIC configured by a modified cascode structure with the operation band from 1.8 GHz to 2.8 GHz is proposed. The modified cascode structure adopts inductive degeneration and an additional transistor used for linearity enhancement and simultaneous input and noise matching. Also, the resistive feedback at the input and inductive peaking at the output are applied to ensure the stability over the wideband operation. The proposed LNA MMIC was implemented by 0.5μm GaAs pHEMT process and showed the measured input third-order intercept point (IIP3) of 15.5 ± 1.3 dBm, gain of 16.3 ± 2.2 dB, output P1-dB of 16.7 ± 0.3 dBm and noise figure (NF) of 1 ± 0.2 dB from 1.8 GHz to 2.8 GHz.",

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AU - Lee, Han Lim

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N2 - In this letter, a highly linear low-noise amplifier (LNA) MMIC configured by a modified cascode structure with the operation band from 1.8 GHz to 2.8 GHz is proposed. The modified cascode structure adopts inductive degeneration and an additional transistor used for linearity enhancement and simultaneous input and noise matching. Also, the resistive feedback at the input and inductive peaking at the output are applied to ensure the stability over the wideband operation. The proposed LNA MMIC was implemented by 0.5μm GaAs pHEMT process and showed the measured input third-order intercept point (IIP3) of 15.5 ± 1.3 dBm, gain of 16.3 ± 2.2 dB, output P1-dB of 16.7 ± 0.3 dBm and noise figure (NF) of 1 ± 0.2 dB from 1.8 GHz to 2.8 GHz.

AB - In this letter, a highly linear low-noise amplifier (LNA) MMIC configured by a modified cascode structure with the operation band from 1.8 GHz to 2.8 GHz is proposed. The modified cascode structure adopts inductive degeneration and an additional transistor used for linearity enhancement and simultaneous input and noise matching. Also, the resistive feedback at the input and inductive peaking at the output are applied to ensure the stability over the wideband operation. The proposed LNA MMIC was implemented by 0.5μm GaAs pHEMT process and showed the measured input third-order intercept point (IIP3) of 15.5 ± 1.3 dBm, gain of 16.3 ± 2.2 dB, output P1-dB of 16.7 ± 0.3 dBm and noise figure (NF) of 1 ± 0.2 dB from 1.8 GHz to 2.8 GHz.

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KW - simultaneous input and noise matching

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Wideband highly linear LNA using modified cascode for simultaneous input and noise matching technique

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Keywords

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