S. N. Razinkov1, О. E. Razinkovа2, А. V. Savchenko3
1–3 MESC of Air Forces “N.Е. Zhukоvsky and Yu.А. Gаgаrin Air Force Academy” (Vоrоnеzh, Russia)

1 razinkovsergey@rambler.ru, 2 olgarazinkovaic@icloud.com, 3 nomenate1@gmail.com

Construction of ultra-wideband radio communication systems involves searching for efficient methods of generating signals for transmission over radio channels with low distortion of forms in antenna-feeder paths. To achieve high power amplification of wave processes in radio transmitting devices, antenna arrays are used that allow synchronous addition of signals emitted by different elements in space. At the same time non-stationary finite excitation of antenna-feeder paths and deviations of transfer functions of amplifying stages of radio transmitting devices, matching and distributing lines in the range of working frequencies from rectangular shape, which is typical for ideal space-time converter, cause significant differences in structure and parameters of radiated signal from its characteristics set by transmitter. To study the laws of transformation of ultra-wideband signals with regular and discontinuous envelopes during radiation, it is necessary to build a model and, using the analytical representation of transfer functions and transient complex transmission coefficients of antenna-feeder paths, find angular-time diagrams of wave processes formed by antenna arrays.

The purpose of the article is analysis of transformation patterns of ultra-wideband radio pulses with Gaussian and rectangular envelopes under radiation by linear antenna arrays. In order to analysis patterns of emission of ultra-wideband signals, an analytical representation of their space-time distribution has been obtained based on convolution of the pulse transition characteristic of the antenna-feeder path of the transmitting device and instantaneous amplitudes of electromotive forces achieved at inputs of a linear antenna array. In the interests of formalized description and calculation of the characteristics of excitation transients of the antenna system, expressions for the transfer function and the transient complex transfer coefficient of the antenna-feeder path have been obtained. Equivalent frequency and time dimensions of signals emitted by antenna arrays have been found, as well as angular distribution of their amplitudes when exciting range and resonance antenna elements with pulses with regular and discontinuous envelopes.

Using the developed model, transformation laws have been identified and limits of change of frequency-time parameters of ultra-wideband signals have been determined due to transformations in antenna-feeder paths of linear antenna arrays. The obtained results enable to justify designs of antenna feeder paths and diagram-forming circuits by distribution of spectral densities of complex amplitudes of electromotive forces at the inputs of antenna arrays in order to achieve high levels of radiated power and scanning space with amplification of ultra-wideband signals.

Razinkov S.N., Razinkovа О.E., Savchenko А.V. Model of ultra-wideband signals in radio transmitting devices with linear antenna arrays. Antennas. 2025. № 2. P. 41–48. DOI: https://doi.org/10.18127/j03209601-202502-05 (in Russian)

1. Razin'kov S.N., Nikitin R.O., Lyubavskij A.P. Oblasti primeneniya i puti sovershenstvovaniya sistem radiosvyazi so sverkhshirokopolosnymi signalami. Elektrosvyaz'. 2018. № 7. S. 53–57. (in Russian)
2. Belichenko V.P., Buyanov Yu.I., Koshelev V.I. Sverkhshirokopolosnye impul'snye radiosistemy. Novosibirsk: Nauka. 2015. (in Russian)
3. Uryadnikov Yu.F., Adzhemov S.S. Sverkhshirokopolosnaya svyaz'. Teoriya i primenenie. M.: SOLON-Press. 2005. (in Russian)
4. Fedotov D.V., Sudakov A.A. Signaly, ispol'zuemye v SShP radiosistemakh. Naukoemkie tekhnologii. 2005. № 7. S. 15–18. (in Russian)
5. Kol'tsov Yu.V. Metody i sredstva analiza i formirovaniya sverkhshirokopolosnykh signalov. M.: Radiotekhnika. 2004. (in Russian)
6. Klyuev V.I. Chastotno-vremennye preobrazovaniya i priem diskretnykh signalov v sistemakh svyazi. M.: Radio i svyaz'. 1990. (in Russian)
7. Popova O.E., Razin'kov S.N. Chastotno-vremennye preobrazovaniya sverkhshirokopolosnykh signalov v radiosistemakh s linejnymi antennymi reshetkami. Antenny. 2010. № 8 (159). S. 55–60. (in Russian)
8. Kozlov A.I., Logvin A.I., Sarychev V.A. Polyarizatsiya radiovoln. Kn. 1: Polyarizatsionnaya struktura radiolokatsionnykh signalov. M.: Radiotekhnika. 2005. (in Russian)
9. Neganov V.A., Tabakov D.P., Yarovoj G.P. Sovremennaya teoriya i prakticheskie primeneniya antenn. M.: Radiotekhnika. 2009. (in Russian)
10. Avdeev V.B. Energeticheskie kharakteristiki napravlennosti antenn i antennykh sistem pri izluchenii i prieme sverkhshirokopolosnykh signalov i sverkhkorotkikh impul'sov. Antenny. 2002. № 7 (62). S. 5–27. (in Russian)
11. Ango A. Matematika dlya elektro- i radioinzhenerov: Per. s frants. pod obshch. red. K.S. Shifrina. M.: Nauka. 1965. (in Russian)