Measurement of the Impedance of a Microstrip Line with a Vector Network Analyzer

Lupanova, E. A.; Nikulin, S. M.

doi:10.1007/s11018-022-02094-5

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…The traditional approach to modeling integrated circuits involves testing the chip's internal parameters using a vector network analyzer. Subsequently, this data is matched with the basic model to derive the corresponding circuit model [15][16][17]. This method is relatively straightforward: it requires equating the internal impedance of the device under test through a four-port network measurement based on the known structure.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Direct Extraction of Parameters for GaAs HBT Small- Signal Equivalent Circuit

Jianyu,

Mengdi,

Yifei

et al. 2024

IEICE Electron. Express

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Due to the low noise and high linearity characteristics of GaAs Hetero-junction Bipolar Transistors (HBTs), Low Noise Amplifiers (LNAs) are widely used in aerospace, communication, computer, and other fields. Extracting device model parameters is of great significance for subsequent research on the electromagnetic compatibility characteristics of such devices. In this paper, based on the small signal model, the model parameters of the amplifier are extracted by combining the I-V characteristics of the amplifier under different external voltage conditions. The linear model parameters are extracted using a fitting analysis method to obtain the Pspice circuit model of the GaAs amplifier under normal operating conditions. The simulation results align closely with the measured results. Compared with traditional modeling methods, this approach effectively resolves the issue of being unable to measure parameters due to chip packaging. This method holds substantial significance in extracting circuit model parameters and conducting in-depth research on circuit electromagnetic compatibility characteristics of this device.

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Section: Introductionmentioning

confidence: 99%

Modeling and Direct Extraction of Parameters for GaAs HBT Small- Signal Equivalent Circuit

Jianyu,

Mengdi,

Yifei

et al. 2024

IEICE Electron. Express

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Monitoring the parameters of printed striplines in the microwave range of electromagnetic waves

Terentyev,

Lupanova,

Nikulin

et al. 2024

Meas Tech

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Monitoring the parameters of printed strip lines in the microwave range of electromagnetic waves

Terentyev,

Lupanova,

Nikulin

et al. 2024

jour

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The characteristic impedance of printed strip lines is determined by their design, cross-sectional geometry, relative permeability of the insulating base, and other factors that cannot be accurately estimated. The known methods for monitoring its frequency dependence using microwave measurements are not perfect and require further development. The proposed work proposes a method for experimental monitoring of the entire set of parameters of printed strip transmission lines: wave impedance, relative effective dielectric constant, as well as phase velocity and attenuation coeffi cient of a propagating electromagnetic wave. The characteristic impedance is determined by the s-parameters of the connection of coaxial strip junctions with a segment of an electrically long line. The wave parameters measured in the coaxial channel are transformed in the area of contact of the coaxial and strip lines, which makes it possible to obtain an analytical estimate of the wave impedance over the entire frequency range of the vector network analyzer or at least in its individual frequency windows. In the proposed method, the phase velocity, attenuation coeffi cient and relative effective dielectric constant are controlled by the differential-phase method based on the results of measuring the transmission coeffi cients of coaxial strip junction connections transformed to the contact areas by sections of electrically long and short printed stripline transmission lines. The performance of the proposed method for monitoring the parameters of printed strip lines is confi rmed by automated modeling, and its effectiveness is confi rmed by a full-scale experiment. The results obtained are useful to development engineers of integrated microwave technology and specialists in the field of monitoring object parameters in non-standard guide systems.

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Measurement of the Impedance of a Microstrip Line with a Vector Network Analyzer

Cited by 3 publications

References 4 publications

Modeling and Direct Extraction of Parameters for GaAs HBT Small- Signal Equivalent Circuit

Modeling and Direct Extraction of Parameters for GaAs HBT Small- Signal Equivalent Circuit

Monitoring the parameters of printed striplines in the microwave range of electromagnetic waves

Monitoring the parameters of printed strip lines in the microwave range of electromagnetic waves

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