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Microwave and Telecommunication Technology, 2003. CriMiCo 2003. 13th International Crimean Conference

Date 8-12 Sept. 2003

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Displaying Results 1 - 25 of 307
  • 2003 13th International Crimean Conference 'Microwave and Telecommunication Technology' (IEEE Cat. No.03EX697)

    Publication Year: 2003
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (2311 KB)  

    The following topics are dealt with: multiservice broadband access networks; medical applications and ecological applications; solid state devices; CAD/CAM; electrovacuum and microvacuum SHF devices; microwave communication; satellite navigation; antennas; passive components; microwave device production technology; microwave materials; very high power microwave electronics; microwave measurements; industrial and transport applications; microwave remote sensing and radioastronomy. View full abstract»

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  • List of Authors

    Publication Year: 2003 , Page(s): XLIV
    Save to Project icon | PDF file iconPDF (130 KB)  
    Freely Available from IEEE
  • Semiconductor heterostructures for lasers and microwave FETs

    Publication Year: 2003 , Page(s): 3 - 5
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (318 KB)  

    Results of developing the design and manufacturing technologies of epitaxial heterostructures for microwave FETs and various semiconductor lasers are presented. A technology of producing heterostructures in AlGaAs/InGaAs/GaAs, InAlAs/InGaAs/InP and AlGaN/GaN systems of materials for microwave FETs has been developed. On the basis of pseudomorphic AlGaAs/InGaAs/GaAs heterostructures microwave FETs have been manufactured providing a 0.6-0.8 dB noise factor with a gain above 11 dB at 12 GHz. On GaAs substrates by means of a molecular-beam epitaxy heterostructures have been obtained with InAs/lnGaAs quantum dots, on the basis of which single-mode laser diodes and vertical-cavity surface-emitting lasers (VCSELs) in the 1300 nm range have been created. A manufacturing technique has been developed for 960-980 nm VCSELs with threshold currents below 1 mA and maximum output power of 3 mW in continuous operating mode at room temperature. These VCSELs are suitable for applications in monolithic matrix emitters. View full abstract»

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  • The state, advance and outlook of high frequency gyrodevices

    Publication Year: 2003 , Page(s): 6 - 10
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (544 KB)  

    An analysis of advances in the area of increase of output power and operating frequency of gyrodevices (gyrotrons and gyroklystrons) of traditional design has d been carried out. It is shown that radical improvement of this parameters may be achieved in multimirror resonators with T-travelling wave gyrotrons. View full abstract»

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  • Schematic and technological aspects of frequency synthesizer design for advanced radars

    Publication Year: 2003 , Page(s): 11 - 14
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (442 KB)  

    The architecture, construction and technology-related aspects of the frequency synthesizer design are studied. Generalized results of the development of frequency synthesizers are given. The main design principles behind prospective models of frequency synthesizers are presented. View full abstract»

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  • The microwave technology

    Publication Year: 2003 , Page(s): 15 - 21
    Cited by:  Patents (1)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (921 KB) |  | HTML iconHTML  

    The nature of microwave technology is defined in the discovery of microwave, which was initially used for military purposes. The invention of radar and microwave ovens are both attributed to this significant discovery. This paper explores significant applications of microwave technology and analyzed the impact on various aspects of this high technology. The new paradigm shift has resulted in tremendous social, economic and cultural impact on our society. Through its half-century of progress, microwave ovens, the most significant by-product of microwave technology, have revolutionized the food industry, creating a paradigm that has completely changed our life styles. Microwave technology finds its ways into numerous military applications. The new emerging technologies in microwaves have altered the future war outlook. The high power microwave technology used in developing intelligent and sophisticated modern weapon systems and radar systems has created tremendous advantages for the war. The paradigm in other industries such as telecommunications, IT, chemistry and many more is far-reaching beyond our perception. The superiority of microwave technology has demonstrated its power and the great commercial values as a result of these applications are discussed throughout this paper. The microwave truly created a new wave. View full abstract»

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  • Fundamental problems of biology from the standpoint of quantum physics of the alive

    Publication Year: 2003 , Page(s): 22 - 28
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (963 KB)  

    Quantum physics of the alive is based on the definition of the alive (as distinct from the dead-inanimate) as a fourth level of quantum organization of nature (after nuclear, atomic and molecular levels). The self-consistent potential of each living object is formed in accordance with the genome as a laser of mm-range wavelength. Such a notion concerning the alive is grounded on theoretical considerations, clinical material and the direct experiments allow us to cast a fresh glance on the fundamental problems of biology and not only on them. View full abstract»

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  • Scanning near-field optical microscopy, spectroscopy and nanolithography

    Publication Year: 2003 , Page(s): 29 - 31
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (407 KB)  

    A review of the latest developments in the scanning near-field optical microscopy, spectroscopy and nanolithography is presented. The possibility of obtaining images of different semiconductor, microelectronic and microbiology structures with the resolution exceeding the diffraction limit is shown. The investigation of local energy and geometry properties of sample surfaces is discussed, including concentration, diffusion length and carrier charge spectra, mapping of the emitting surfaces of semiconductor lasers, near-field photoconductivity, propagation and transformation of surface plasmons at the resolution below 100 nm. Techniques of fabricating objects with /spl les/30-50 nm dimensions are discussed. View full abstract»

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  • Investigation of the W-band PAA with ferrite phase shifters

    Publication Year: 2003 , Page(s): 32 - 34
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (380 KB)  

    The design of and research results on the flat multielement W-band phased antenna array (PAA) with two-dimensional beam scanning are presented. Faraday type waveguide ferrite phase shifter (WFPS) with extremely fast response time and waveguide-dielectric radiators having cross sectional dimensions less then 1,25 wavelengths are used as PAA elements. The directional properties of waveguide-dielectric radiator far field pattern allow suppressing the PAA grating lobes within a beamscanning sector of /spl plusmn/15/spl deg/. View full abstract»

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  • High-speed access satellite networks: hardware and installation criteria

    Publication Year: 2003 , Page(s): 37 - 40
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (497 KB)  

    The utilization of land data transmission link is problematic, since it cannot provide high-speed high-quality channels. A feasible solution for this problem lies in the deployment of access networks using satellite communication channels. Small VSAT-type stations form the basis for the existing and developing land links of satellite communication systems (SCS). The implementation of new technologies and state-of-the-art techniques for data processing and transfer provides high-speed access for VSAT subscribers is proposed. A VSAT consists of antenna and RF equipment (frequency converters, low-noise amplifiers, power amplifiers) in the outdoor unit and an interface with the common-access land channels and Modem in the indoor unit. Satellite link efficiency depends on modulation and the type of Modem determine the coding technique. The estimation of VSAT hardware is presented. View full abstract»

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  • Emergence and prospects of digital TV in Ukraine

    Publication Year: 2003 , Page(s): 41 - 43
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (287 KB)  

    The global onrush of the DVB-T multichannel and multipurpose terrestrial digital broadcasting is described. The efficiency indicators of the DVB-T standard for national economies and its market potential are outlined. A conceptual plan for the implementation of multipurpose terrestrial digital broadcasting is presented. View full abstract»

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  • A telecommunications system for digital TV and data distribution

    Publication Year: 2003 , Page(s): 44 - 46
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (649 KB)  

    An optional setup of a telecommunications system for digital TV and data distribution is considered, characteristics of the head-end hardware are given. View full abstract»

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  • Broadband wireless access systems: new fixed radioaccess projects

    Publication Year: 2003 , Page(s): 47 - 50
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (438 KB)  

    Two Ukrainian projects of setting up fixed broadband wireless access systems are presented: the 'campus-KPI' microwave telecommunications distribution system and 'Sky Honeycomb' telecommunications system utilizing high-altitude platform stations. View full abstract»

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  • Estimating a coverage zone for telecommunications systems based on high-altitude platform stations

    Publication Year: 2003 , Page(s): 51 - 52
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (211 KB)  

    Features of radio link and cellular framework for telecommunications systems based on high-altitude platform stations are presented. These features are required in estimating an operational range of such systems. View full abstract»

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  • Corporate regional multiservice network on the basis of radioEthernet technology: specifity of creation and experience of operation

    Publication Year: 2003 , Page(s): 53 - 56
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (394 KB)  

    In this paper the principles of design, creation, topology, structure of cross-points of regional wireless multiservice distribution network on the basis of radioEthernet are discussed. Corporate network of "ZhytomirOblEnergy" was taken as an example. Specificity of voice traffic transmission and problems of safety are mentioned. View full abstract»

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  • Last-mile data-transfer RRL

    Publication Year: 2003 , Page(s): 57 - 59
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (519 KB)  

    Technical solutions for a RRL that occupies an intermediate position between the TV and telephony markets are considered. A last-mile data-transfer RRL is proposed. Since the overall stream rate is not high, the issue of frequency band saving is not acute. The RRL group signal shaping is achieved at the first intermediate frequency of 1-2 GHz with the 2-13 GHz conversion. The RRS module set provides the transfer of E1/E2 telephony streams, Internet-Ethernet 10 base T data flows, TV channels transmission from one head-end to others. The implementation of home satellite television techniques has enabled the use of well-established technical solutions offering reduced costs of the RRL data transfer. View full abstract»

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  • Group TV signal transmission with carrier frequency hopping

    Publication Year: 2003 , Page(s): 60 - 62
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (524 KB)  

    A possibility of setting up a single-band frequency-hopping modulator-based cable TV head-end station is considered. As opposed to the available DALVI or CRYPTON scrambling systems, frequency-hopping carrier-based scrambling is discussed. The scrambling is achieved by the simultaneous carrier frequency hopping at transmitter and receiver during the frame pulse. Experimental results have confirmed the possibility of providing TV group signal scrambling by means of the carrier frequency hopping. View full abstract»

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  • Single-band TV signal shaper tuned over wide frequency range

    Publication Year: 2003 , Page(s): 63 - 64
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (221 KB)  

    A possibility of manufacturing a single-band TV signal shaper tuned over a wide frequency range is considered. The possibility of a single-band frequency-switched TV signal shaping offers interchangeable channels, headend channel transformation and the resulting broader market access. The emergence of mobile communications systems has boosted the development of SAW technology and refined its calculation techniques. The intermediate frequency (IF) has increased, which offered the opportunity of designing a single-band TV signal shaper tuned over a wide frequency range. The creation of an above-250 MHz SAW filter with a right slope performance offers a wider frequency tuning for modulators, at the same time keeping the device relatively simple. View full abstract»

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  • A multifunctional CTV measuring device

    Publication Year: 2003 , Page(s): 65 - 67
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (693 KB)  

    The utilization of frequency ranges of up to 3 GHz (5...65 MHz for return channel, 47...860 MHz for CTV transmission, 950...2150 MHz for satellite IF, 2500...2700 MHz for MMDS) in cable TV necessitated the design of a device allowing for the levels of spectral components in the given ranges to be measured. The LFM 300 measures the AFC and PFC of passive and active devices in the 5...1000 MHz range, as well as amplifier intermodulation distortion (IMA 3 according to DIN 45004) across the top range of the TV channels transmitted over cable. The report presents technical solutions behind the design of the device. View full abstract»

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  • Path loss due to rain fading and precipitation in 26 GHz LMDS systems: consideration of implementation in Turkey

    Publication Year: 2003 , Page(s): 68 - 72
    Cited by:  Papers (1)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (533 KB) |  | HTML iconHTML  

    This paper explains the rainfall attenuation prediction model recommended in ITU-R PN.838 and investigates the variability of 26 GHz LMDS radio channel obscured by rain attenuation in seven representative cities for the climate of Turkey. Model is applied both with recommended input values presented in ITU-R PN.837-1 and values obtained by processing long term monthly precipitation data for Adana, Ankara, Antalya, Erzurum, Istanbul, Izmir, and Samsun. Results for both applications are presented and the necessity of using location-specific monthly climate statistics for the LMDS system design is addressed. View full abstract»

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  • Methodological aspects of implementing quantum medicine technologies

    Publication Year: 2003 , Page(s): 75 - 77
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (299 KB)  

    Microwave resonance therapy (MRT) is the basic technology of quantum medicine, is used for the application of mm-range electromagnetic radiation (EMR) to biologically active points on human skin. The EMR is characterized by specific values of radiation frequency, flux power, time of operation, treatment duration, the number of sessions and other individually adjusted indicators. MRT provides stable positive results in the treatment of various human diseases. The list of the diseases successfully treated by the MRT numbers nearly 60, including those of gastrointestinal tract, respiratory system, endocrine, vascular circulatory, locomotor and nervous systems, as well as immunodeficiency and allergic states. For 88 per cent of the patients the MRT is used in the monotherapeutic mode, which eliminates the risk of allergic complications, side effects and dependence on drugs. The treatment may pursue various objectives depending on the nature of the pathology and the presence of irreversible organic transformations in organs and tissues. On the whole, with 85 per cent of patients a good clinical effect was observed. View full abstract»

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  • Experimental research of biological effects of pulse EM fields

    Publication Year: 2003 , Page(s): 78 - 79
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (217 KB)  

    In this paper we studied the biological effect of superwideband EM radiation and high-intensity pulse upon the seeds of barley and spring wheat. View full abstract»

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  • Animate nature under the action of artificial electromagnetic fields

    Publication Year: 2003 , Page(s): 80 - 82
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (376 KB)  

    Microwave electromagnetic field effects were studied in experiment on living organisms. Results obtained by application of different radiation sources have been analyzed. View full abstract»

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  • Human psychophysiologic reactions under the influence of weak MM-wave EMR in pathologic conditions

    Publication Year: 2003 , Page(s): 83 - 84
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (199 KB)  

    In assessing the influence of weak mm-wave electromagnetic radiation (EMR) upon a human psychophysiologic state certain subjective sensations along with microconcentrations of hydrogen, methane, CO and NO in the expired air have been registered; the percentage of active electronegative nuclei in buccal epithelium cells and the intensity of mm-range human self-EMR were determined. View full abstract»

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  • Measurements of low SHF radiation power of biological objects

    Publication Year: 2003 , Page(s): 85 - 87
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (315 KB)  

    A method of measuring the power of EHF-range electromagnetic radiation is considered. The method provides for more accurate and sensitive estimates of microwave signals generated by biological objects and human beings. View full abstract»

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