Java-enabled Low Cost RF Vector Network Analyzer

Mulder, B. De; Renterghem, K. Van; Backer, E. De; Suanet, Pieter; Vandewege, Jan

doi:10.1109/newcas.2005.1496681

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…The detector calibration is used to calibrate the detector for phase measurements. Therefore, an SMA cable with a fixed length is used [15], leading to linear phase changes as a function of frequency. This behavior is used to make an array with increasing voltages by linearly increasing the frequency.…”

Section: Calibrationmentioning

confidence: 99%

A Low-cost Vector Network Analyzer: Design and Realization

Verhaevert¹,

Torre²

2017

Loughborough Antennas &Amp; Propagation Conference (LAPC 2017)

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In this paper, a low-cost Vector Network Analyzer (VNA) design is presented: from an initial study of network analysis fundamentals to a working design. In a first part of this paper, the architecture and functionality of a VNA are handled. The hardware components and their specifications are described. The design in this paper uses a Direct Digital Synthesizer (DDS) to generate signals. To measure phase and magnitude differences, integrated detectors are used. The design needs to be able to run embedded software in order to work. The programs, written in C code on an ARM processor, give the user the opportunity to set up the measurements using an LCD display, showing the results in a magnitude and phase plot or a Smith chart with a marker indication for reading out characteristics.

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Section: Calibrationmentioning

confidence: 99%

A Low-cost Vector Network Analyzer: Design and Realization

Verhaevert¹,

Torre²

2017

Loughborough Antennas &Amp; Propagation Conference (LAPC 2017)

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“…Customarily, an accurate VNA meter is expensive and cumbersome, which is suitable for laboratory but not for the down-hole drilling. However, recent advances in electronic technology allow manufacturing one kind of network analyzer working at the lower frequency (kHz to GHz) with small size, which is suitable for working in the well-logging environment [22]. This kind of network analyzer uses direct digital synthesizer circuits to generate radio frequency test signal and local oscillation signal, and the intermediate frequency signal are sampled by Analog/Digital (A/D) converters.…”

Section: Z(ω)mentioning

confidence: 99%

Investigation of a Conductivity Logging Tool Based on Single Coil Impedance Measurement Using FDTD Method

Sheng¹,

Li²,

Kong³

et al. 2014

PIER M

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Eddy current test has been widely used in many fields because of its simplicity and robustness. In this paper, numerical simulations based on the finite-difference time-domain method were carried out to validate if the eddy current coil can effectively be used in the logging while drilling system. The simulation results showed that the impedance of the eddy current coil is a function of conductivity of the surrounding media. The formation conductivity is strongly dependent on the concentration of hydrocarbons, so different formation layers can be distinguished by measuring coil impedance. Different source frequencies were applied, and it was found that this method works well in frequency range from 100 MHz to 1 GHz. The investigation depth was studied in this paper, and a 3-layer formation model was simulated in this paper. The results showed that this novel method could be effectively used in a well logging system.

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Java-enabled Low Cost RF Vector Network Analyzer

Cited by 2 publications

References 4 publications

A Low-cost Vector Network Analyzer: Design and Realization

A Low-cost Vector Network Analyzer: Design and Realization

Investigation of a Conductivity Logging Tool Based on Single Coil Impedance Measurement Using FDTD Method

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