A method for improving high-insertion-loss measurements with a vector network analyzer

PERANCANGAN DAN REALISASI BANDPASS FILTER DENGAN METODE OPEN LOOP SQUARE RESONATOR UNTUK MICROWAVE LINK

Jurnal Teknologi Elektro ◽

10.22441/jte.v7i3.891 ◽

2016 ◽

Vol 7 (3) ◽

Author(s):

Naufal Rizki Rinditayoga ◽

Dian Widi Astuti

Keyword(s):

Insertion Loss ◽

Return Loss ◽

Bandpass Filter ◽

Open Loop ◽

Vector Network Analyzer ◽

Network Analyzer ◽

Point To Point ◽

Microwave Link

Dalam dunia telekomunikasi, antena parabola ini dipakai oleh perangkat yang dinamai perangkat transmisi radio microwave (gelombang mikro) point to point. Microwave link sendiri merupakan sistem komunikasi yang menggunakan gelombang radio pada rentang frekuensi gelombang mikro untuk mengirimkan video, audio, atau data antara dua lokasi yang terpisah, yang dapat digunakan hanya beberapa meter sampai dengan beberapa kilometer. Untuk mendukung teknologi tersebut, tidak lepas dari sebuah yang bernama filter. Filter sendiri merupakan salah satu komponen penting dalam komunikasi wireless.Dasar penelitian ini yaitu bertujuan untuk membuat sebuah bandpass filter yang dapat meloloskan frekuensi pada microwave link yaitu pada frekuensi 7,1 GHz – 7,7 GHz. Dari hasil pengukuran respon filter pada alat vector network analyzer didapatkan hasil yang berbeda antara spesifikasi, simulasi dan fabrikasi. Hasil dari penelitian ini Bandpass filter bekerja pada frekuensi 7,1 – 7,7 GHz. Pada hasil simulasi menggunakan HFSS didapatkan nilai return loss (S11) filter sebesar -27,48 dB dan insertion loss (S21) sebesar -0,43 dB. Sedangkan pada hasil pengukuran menggunakan VNA didapatkan nilai return loss (S11) filter sebesar -28,2 dB dan insertion loss (S21) sebesar -0,53 dBKata kunci : Bandpass filter, Open Loop Square Resonator, Microwave link

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A New Calibration Method for Achieving High Insertion-Loss Measurements with a Vector Network Analyzer

2018 91st ARFTG Microwave Measurement Conference (ARFTG) ◽

10.1109/arftg.2018.8423827 ◽

2018 ◽

Cited By ~ 1

Author(s):

Jeffrey A. Jargon ◽

Dylan F. Williams

Keyword(s):

Insertion Loss ◽

Calibration Method ◽

Vector Network Analyzer ◽

Network Analyzer

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Reconfigurable SDM Optical Vector Network Analyzer

Optical Fiber Communication Conference ◽

10.1364/ofc.2014.w4d.5 ◽

2014 ◽

Author(s):

Joel Carpenter ◽

Benjamin J. Eggleton ◽

Jochen Schröder

Keyword(s):

Vector Network Analyzer ◽

Network Analyzer

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Wideband Active Load–Pull by Device Output Match Compensation Using a Vector Network Analyzer

IEEE Transactions on Microwave Theory and Techniques ◽

10.1109/tmtt.2020.3034713 ◽

2021 ◽

Vol 69 (1) ◽

pp. 874-886

Author(s):

Alberto Maria Angelotti ◽

Gian Piero Gibiino ◽

Troels S. Nielsen ◽

Dominique Schreurs ◽

Alberto Santarelli

Keyword(s):

Vector Network Analyzer ◽

Network Analyzer ◽

Active Load ◽

Load Pull

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Simulation and Experimental Study of the Near Field Probe in the Form of a Folded Dipole for Measuring Glucose Concentration

Applied Sciences ◽

10.3390/app11125415 ◽

2021 ◽

Vol 11 (12) ◽

pp. 5415

Author(s):

Aleksandr Gorst ◽

Kseniya Zavyalova ◽

Aleksandr Mironchev ◽

Andrey Zapasnoy ◽

Andrey Klokov

Keyword(s):

Experimental Measurement ◽

Glucose Concentration ◽

Field Experiments ◽

Near Field ◽

Vector Network Analyzer ◽

Human Hand ◽

Physical Parameters ◽

Network Analyzer ◽

Frequency Range ◽

Average Deviation

The article investigates the near-field probe of a special design to account for changes in glucose concentration. The probe is designed in such a way that it emits radiation in both directions from its plane. In this paper, it was proposed to modernize this design and consider the unidirectional emission of the probe in order to maximize the signal and reduce energy loss. We have done extensive research for both bidirectional and unidirectional probe designs. Numerical simulations and field experiments were carried out to determine different concentrations of glucose (0, 4, 5.3, 7.5 mmol/L). Numerical modeling of a unidirectional probe showed that the interaction of radiation generated by such a probe with a multilayer structure simulating a human hand showed a better result and high sensitivity compared to a bidirectional probe. Further, based on the simulation results, a phantom (physical model) of a human hand was recreated from layers with dielectric properties as close as possible to the properties of materials during simulation. The probe was constructed from a copper tube and matched both the geometric and physical parameters of the model. The experimental measurement was carried out using a vector network analyzer in the frequency range 2–10 GHz. The experimental measurement was carried out using a vector network analyzer in the frequency range 2–10 GHz for the unidirectional and bidirectional probes. Further, the results of the experiment were compared with the results of numerical simulation. According to the results of multiple experiments, it was found that the average deviation between the concentrations was 2 dB for a unidirectional probe and 0.4 dB for a bidirectional probe. Thus, the sensitivity of the unidirectional probe was 1.5 dB/(mmol/L) for the bidirectional one 0.3 dB/(mmol/L). Thus, the improved design of the near-field probe can be used to record glucose concentrations.

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