Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Evgeniy R. Gafarov"'
Autor:
Evgeniy R. Gafarov, Yu. P. Salomatov
Publikováno v:
Известия высших учебных заведений России: Радиоэлектроника, Vol 24, Iss 1, Pp 6-14 (2021)
Introduction. The multipath resistance of GNSS antennas is largely determined by the gain slope of the amplitude radiation pattern at sliding angles (angles close to the horizon). The gain slope of the antenna radiation pattern is determined by the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47320cfda0c96ba25eb930ca53788991
https://doi.org/10.32603/1993-8985-2021-24-1-6-14
https://doi.org/10.32603/1993-8985-2021-24-1-6-14
Publikováno v:
Radioelectronics and Communications Systems. 63:521-531
Conventional narrowband beamforming methods are not effective for wideband antenna arrays. Radiation pattern of such array has various beam width over the frequency. Existing frequency-invariant beamforming methods using finite impulse response filte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8002c11d3514c3adc6421d0e79b35f1
https://doi.org/10.3103/s0735272720100027
https://doi.org/10.3103/s0735272720100027
Publikováno v:
2019 Radiation and Scattering of Electromagnetic Waves (RSEMW).
The investigation of four-way cylindrical helix antenna for applications in high-precision field of global navigation satellite systems (GNSS) was presented in the article. A comparison of the proposed antenna with the classical approach of reducing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca3534629668bf8f8986a01d53d41da2
https://doi.org/10.1109/rsemw.2019.8792704
https://doi.org/10.1109/rsemw.2019.8792704
Publikováno v:
2019 Radiation and Scattering of Electromagnetic Waves (RSEMW).
Frequency-invariant arrays are widely used in communication systems, audio processing and radar. For this applications wideband beam steering with FIR-filters is required. The paper presents a fixed frequency-invariant beamforming method. Proposed me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97a962cc08b7dd5896c28490edf3f09a
https://doi.org/10.1109/rsemw.2019.8792700
https://doi.org/10.1109/rsemw.2019.8792700
Publikováno v:
2019 International Siberian Conference on Control and Communications (SIBCON).
There are various receiving antennas of satellite radio navigation systems. As a rule, the qualitative polarization characteristics (axial ratio) are achieved by efficiency degradation or frequency ranges decreasing. In this article, a circular polar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e42396f552cb792305e0c1cb71d1413
https://doi.org/10.1109/sibcon.2019.8729623
https://doi.org/10.1109/sibcon.2019.8729623
Publikováno v:
2019 International Siberian Conference on Control and Communications (SIBCON).
The LCMV-beamformers are widely used in many applications but to steer array pattern in some direction we need to use phase shifters or additional delay lines for pre-steering. In this paper, we introduce simple constraints in the DOA of the useful s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41092ac63a6d563a0143c441f17c92d6
https://doi.org/10.1109/sibcon.2019.8729604
https://doi.org/10.1109/sibcon.2019.8729604
Publikováno v:
2018 XIV International Scientific-Technical Conference on Actual Problems of Electronics Instrument Engineering (APEIE).
In this paper, the adaptive antenna array on wave-slowing structure was presented. The antenna elements mutual coupling of the adaptive array was investigated. In the article the problems of obtaining the minimum difference of amplitude and phase cha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::efe8c09a81fa0a58968e663b544ef6e0
https://doi.org/10.1109/apeie.2018.8545644
https://doi.org/10.1109/apeie.2018.8545644
Publikováno v:
2017 Radiation and Scattering of Electromagnetic Waves (RSEMW).
The design of an omni-directional antenna with spatial filtering was represented in this paper. The characteristics of such an antenna that obtained during the simulation, as well as the measured results of breadboard were considered. Based on obtain
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11a106ea2582217349221b24a7d53e9d
https://doi.org/10.1109/rsemw.2017.8103659
https://doi.org/10.1109/rsemw.2017.8103659
Publikováno v:
2017 International Siberian Conference on Control and Communications (SIBCON).
A method for equalizing frequency responses of the adaptive antenna array channels is shown. This method does not require a reference signal or some additional antennas. Equalizing is performed on the received signal (like interference signal).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf167a4d8c512271d1afb31d843cf89a
https://doi.org/10.1109/sibcon.2017.7998448
https://doi.org/10.1109/sibcon.2017.7998448
Publikováno v:
2017 International Siberian Conference on Control and Communications (SIBCON).
The simulation and experimental results of quadrupole antenna with four power points to create a right-hand circular polarization with respect to the systems IRNSS/GLONASS/GPS were presented.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f1875a5e7dd66dcfe2454b667e0d582
https://doi.org/10.1109/sibcon.2017.7998468
https://doi.org/10.1109/sibcon.2017.7998468