Shuttle Avionics, Radio Frequency Analysis, and Electromagnetic Compatibility and Lightning Protection

2011 ◽  
Author(s):  
Shian Hwu ◽  
Quin Kroll ◽  
Catherine Sham ◽  
Ray Nuss ◽  
Kaylene Kindt ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Frequency Analysis ◽  
Electromagnetic Compatibility ◽  
Lightning Protection

Radio Frequency Support for Space Systems Based on Multi-Satellite Constellations Taking into Account the ITU-R Requirements and the WRC-19 Results

2021 ◽  
Vol 8 (4) ◽  
pp. 72-76
Author(s):  
А. А. Talanov ◽  
◽  
S. А. Fedotov ◽  
А. М. Stepanov ◽  
◽  
...  
Keyword(s):  
Radio Frequency ◽  
Frequency Spectrum ◽  
Communication Systems ◽  
Electromagnetic Compatibility ◽  
Satellite Communication ◽  
Space Systems ◽  
Satellite Constellations ◽  
Broadband Internet ◽  
State Commission ◽  
Radio Frequency Spectrum

Deployment of space systems based on multi-satellite constellations to provide broadband Internet access and communication services acutely raises the question of their radio frequency support including issues of electromagnetic compatibility (EMC) between competing space systems using multi-satellite constellations (StarLink, OneWeb, Kuiper, etc.), their EMC with traditional space systems (satellite communication systems that employ spacecraft in geostationary and non-geostationary orbits, space systems of other services), as well as regulatory issues of entering into service and staged deployment of space systems. The article formulates the problematic issues of radio frequency support of modern space systems taking into account the trends of satellite constellations deployment and proposes the solutions with consideration to international and national requirements in the regulation of radio frequency spectrum including the ITU requirements and the requirements of Russian State Commission for Radio Frequencies. The paper shows the ways to share the radio frequency spectrum to meet new requirements of the World Radiocommunication Conference 2019 (WRC-19).

Radio-frequency analysis of self-mode-locked quantum dot laser

2019 ◽  
Vol 7 ◽  
pp. 908-911 ◽  
Author(s):  
Christoph Weber ◽  
Paolo Bardella ◽  
Lorenzo Columbo ◽  
Mariangela Gioannini ◽  
Stefan Breuer
Keyword(s):  
Quantum Dot ◽  
Radio Frequency ◽  
Frequency Analysis ◽  
Quantum Dot Laser

DETERMINATION OF THE NORMS OF FREQUENCY-TERRITORIAL DIVERSION DURING THE DEVELOPMENT OF 5G TECHNOLOGY IN 3,4–4,2, 4,4–5, 14,5–15,35 GHZ FREQUENCY RANGES

2021 ◽  
pp. 24-36
Author(s):  
V. S. Lazorenko ◽  
О. V. Plygunov
Keyword(s):  
Radio Frequency ◽  
Frequency Spectrum ◽  
Electromagnetic Compatibility ◽  
Radio Communication ◽  
Fifth Generation ◽  
Radio Frequency Spectrum ◽  
Load Analysis ◽  
Technical And Organizational Measures ◽  
Theoretical Assessment

The article presents scientific and technical proposals on the possibility of joint use of radio frequency spectrum of the fifth-generation mobile radio communication means and existing departmental radio-electronic facilities. On the basis of the load analysis, using the method of theoretical assessment of electromagnetic compatibility, the norms of territorial diversion between radio means are obtained. On the basis of the results of the calculations, it is possible to determine the subbands in which the joint use of radio means is possible, subject to optimization of the frequency-territorial plan and implementation of technical and organizational measures to ensure electromagnetic compatibility.

Методика оценки возможности распределения (выделения) полос частот для одночастотных систем

2020 ◽  
Author(s):  
V.S. Yakimenko
Keyword(s):  
Radio Frequency ◽  
Frequency Spectrum ◽  
Frequency Band ◽  
Electromagnetic Compatibility ◽  
Single Frequency ◽  
Frequency Bands ◽  
Radio Frequency Spectrum

A technique of estimating the possibility of distribution (allocation) of frequency bands for single-frequency systems is proposed. The technique provides the valueof the radio-frequency spectrum unavailable for singlefrequency systems in the specified territorial area and frequency band according to the conditions of electromagnetic compatibility with existing radioelectronic equipment. A system of criteria for evaluating the possibility of allocating frequency bands for singlefrequency systems is proposed. Предложена методика оценки возможности распределения (выделения) полос частот для одночастотных телекоммуникационных систем. Методика предусматривает определение величины адиочастотного спектра (РЧС), недоступного для одночастотных систем в заданном территориальном районе и полосе частот по условиям электромагнитной совместимости (ЭМС) с существующими радиоэлектронными средствами (РЭС). При этом учитывается групповое помеховое воздействие радиоэлектронных средств одночастотных систем на существующие РЭС. Предложена система критериев оценки достаточности доступной части спектра для удовлетворения потребностей в этом ресурсе одночастотных систем.

The Study of Radio Frequency Electromagnetic Environmental Test for Cascade System

2013 ◽  
Vol 475-476 ◽  
pp. 1674-1678
Author(s):  
Yi Wang ◽  
Yun Tao Chen ◽  
Hua Zhang ◽  
Yong Liang Zhou
Keyword(s):  
Radio Frequency ◽  
Field Line ◽  
Electromagnetic Compatibility ◽  
Comprehensive Assessment ◽  
New Method ◽  
Cascade System ◽  
Environmental Test ◽  
Line Coupling ◽  
Volume Size

In this paper, a new method is brought to solve outside radio frequency electromagnetic environmental test of cascade system, which is becoming more and more import to meet electromagnetic compatibility requirements for systems. However, it is very difficult for comprehensive assessment as the volume size of cascade system is very big and irradiation spot of antenna is limited. Based on the theory of field line coupling and aperture-coupled, technology of injection and radiation, the difficulty of test is solved better.

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