B.M. Kats1, K.A. Sayapin2, V.P. Meschanov

1,2 NIKA-Microwave, Ltd. (Saratov, Russia)

2 Yuri Gagarin State Technical University of Saratov (Saratov, Russia)

1,2 nika373@bk.ru

Formulation of the problem. Non-contact meters of distances to irregularities based on reflectometers allow one to solve a number of actual problems of industry and radiolocation. These problems include measurements of distances to some surfaces in cases when other measurement methods can’t be used because of either a high temperature or opacity of a medium.

Goal. The goal of the present investigation is to carry out simulation of reflectometer on waveguide four-probe measuring line.

Results. Simulation of reflectometer is performed on a basis of waveguide multiprobe transmission line. The influence of main sources of measurement errors are considered. The design of four-probe reflectometer with the operating frequency range from 8 GHz to 10 GHz is described. The results of its experimental study are given. The results obtained confirm a possibility to apply the considered device as a non-contact meter of distances to irregularities.

Practical importance. The scheme of building the reflectometer considered in the present work, as well as the design of multiprobe measuring line, and algorithms of experimental data processing might be used for creating industrial samples of distance meters.

The investigation is carried out under the financial support of Russian National Science Foundation (project No 23-29-00879).

Kats B.M., Sayapin K.A., Meschanov V.P. Simulation and experimental investigation of reflectometer on waveguide transmission line. Radiotekhnika. 2025. V. 89. № 2. P. 136−145. DOI: https://doi.org/10.18127/j00338486-202502-18 (In Russian)

1. Galdecoot R. The generalized multiprobe reflectometer and its application to automated transmission line measurements. IEEE Trans. 1973. V. AP-21. № 4. P. 550-554.
2. Kudrjashov Ju.Ju., L'vov A.A., Morzhakov A.A., Shirshin S.I. Optimizacija parametrov mnogozondovoj izmeritel'noj linii. Jelektronnaja tehnika. Ser. 1. Jelektronika SVCh. 1988. Vyp. 10. S. 30-34 (in Russian).
3. Kats B.M., Lvov A.A., Meschanov V.P., Shatalov E.M., and Shikova L. Synthesis of a wideband multiprobe reflectometer. IEEE Trans. on MTT. 2008. V. 56. № 2. P. 507-514.
4. Samarskij A.A. Vvedenie v chislennye metody. M.: Nauka. 1997. 239 s. (in Russian).
5. Pozar D.M. Microwave engineering. 4th ed. 2012., JohnWiley & Sons, Inc.
6. Kats B.M., Sajapin K.A. Issledovanie shirokopolosnyh jelementov svjazi dlja mnogozondovyh reflektometrov. Radiotehnika. 2024. T. 88. № 11. S. 190−192. DOI: https://doi.org/10.18127/j00338486-202411-23 (in Russian).
7. Сайт www.analog,Com. AD8317 data sheet.
8. Guba V.G., Ladur A.A., Savin A.A. Klassifikacija i analiz metodov kalibrovki vektornyh analizatorov cepej. Doklady TUSUR. Dekabr' 2011. № 2(24). Ch. 1 (in Russian).