Direct Comparison Transfer of Microwave Power Sensor Calibration With an Adaptor: Modeling and Evaluation

Abstract

Abstract-In this paper, calibration of a microwave power sensor with an adaptor is investigated with direct comparison transfer technique, and mathematically modeled using signal flow-graphs together with non-touching loop rules. The developed calibration model is then implemented practically with a 30 dB attenuator as the adaptor. Its performance is evaluated following the Guide to the Expression of Uncertainty in Measurement and also verified with the Monte Carlo method. Good agreements are observed with all the error |E n | ≤ 0.25 over the whole frequency range (up to 18 GHz).

Pengembangan Sistem Kalibrasi Daya Untuk Alat Elektromedik Pada Rentang Frekuensi Radio

“…Alat yang beroperasi pada frekuensi radio berada dalam rentang 3 kHz sampai dengan 300 GHz (Fantom, 1990). Daya frekuensi radio merupakan nilai daya yang berasal dari suatu sumber sinyal frekuensi radio yang terukur oleh RF power meter (Zhang, 2013). Pengukuran daya frekuensi radio berfungsi untuk menentukan nilai daya frekuensi radio dari sebuah peralatan, termasuk alat kesehatan.…”

Comparative Evaluation of Uncertainty Transformation for Measuring Complex-Valued Quantities

“…Measurement uncertainty has been recognized to be a key parameter in RF and microwave applications [1][2][3][4]. For the often-experienced complex-valued RF and microwave quantities (e.g., the scattering parameters S 11 , S 21 etc.…”