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Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 29 січня 2023

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Статті в журналах з теми "Travelling-wave antenna"

1

Kirichenko, Yu V., Yu F. Lonin, and I. N. Onishchenko. "Plasma travelling wave antenna." Radioelectronics and Communications Systems 54, no. 11 (November 2011): 613–18. http://dx.doi.org/10.3103/s0735272711110057.

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2

Malherbe, J. A. G. "Integrated travelling-wave antenna for nonradiative dielectric waveguide." Electronics Letters 22, no. 9 (1986): 481. http://dx.doi.org/10.1049/el:19860327.

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3

Chaudhuri, Sumantra, Rakhesh Singh Kshetrimayum, Ramesh Kumar Sonkar, and Mohit Mishra. "Dual circularly polarised travelling wave slot antenna array." Electronics Letters 55, no. 20 (October 2019): 1071–73. http://dx.doi.org/10.1049/el.2019.1972.

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4

Roscoe, D. J., A. Ittipiboon, L. Shafai, and M. Cuhaci. "Noise analysis of an integrated travelling wave antenna." Electronics Letters 29, no. 6 (1993): 544. http://dx.doi.org/10.1049/el:19930363.

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5

de Vos, Stuart John, Simone Cosoli, and Jacob Munroe. "The Traveling Wave Loop Antenna: A Terminated Wire Loop Aerial for Directional High-Frequency Ocean RADAR Transmission." Remote Sensing 12, no. 17 (August 29, 2020): 2800. http://dx.doi.org/10.3390/rs12172800.

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In this paper we document the design, development, results, performance and field applications of a compact directive transmit antenna for the long-range High Frequency ocean RADAR (HFR) systems operating in the International Telecommunication Union (ITU) designated 4MHz and 5MHz radiodetermination bands. The antenna design is based on the combination of the concepts of an electrically small loop with that of travelling wave antenna. This has the effect of inducing a radiated wave predominantly in a direction opposed to that of energy flow on the antenna structures. We demonstrate here that travelling wave design allows for a more compact antenna than other directive options, it has straightforward feed-point matching arrangements, and a flat frequency and phase response over an entire radiodetermination band. In situ measurements of the antenna radiation pattern, obtained with the aid of a drone, correlate well with those obtained from simulations, and show between 8dB and 30dB front-to-back suppression, with a 3dB beam width in the forward lobe of 100∘ or more. The broad-beam radiation pattern ensures proper illumination over the ocean and the significant front-to-back suppression guarantees reduced interference to terrestrial services. The proposed antenna design is compact and straight forward and can be easily deployed by minimal modifications of an existing transmission antenna. The design may be readily adapted to different environments due to the relative insensitivity of its radiation pattern and frequency response to geometric detail. The only downside to these antennas is their relatively low radiation efficiency which, however, may easily be compensated for by the available power output of a typical HFR transmitter. Antennas based on this design are currently deployed at the SeaSonde HFR sites in New South Wales, Australia, with operational ranges up to 200 km offshore despite their low radiating efficiency and the extremely low output power in use at these installations. Due to their directional pattern, it is also planned to test these antennas in phased-array Wellen RADAR (WERA) systems in both the standard receive arrays: where in-band radio frequency noise of terrestrial origin is impacting on data quality, and in the transmit array: to possibly simplify splitting, phasing and tuning requirements.
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6

Krishna, T. V. Rama, B. T. P. Madhav, G. Monica, V. Janakiram, and S. Md Abid Basha. "Microstrip Line Fed Leaky Wave Antenna with Shorting Vias for Wideband Systems." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 4 (August 1, 2016): 1725. http://dx.doi.org/10.11591/ijece.v6i4.10699.

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In this work a complex structured shorted vias microstrip leaky wave antenna is designed and analysed. A Leaky wave antenna is a travelling wave structure with complex propagation constant. When shorting vias are loaded in a periodic structure the fundamental resonant mode shows some stop band characteristics and some of the modes will strongly attenuated. Three different types of iterations are examined in this work with and without defected ground structures. The defected ground structure based leaky wave antennas are showing better performance characteristics with respect to efficiency and phase. A micro strip line feeding with impedance of 50 ohms at both ports are providing excellent impedance matching to the conducting path on the microstrip surface. The shorting vias are suppressing certain higher order frequency bands and providing excellent wide band characteristics with low loss.
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7

Krishna, T. V. Rama, B. T. P. Madhav, G. Monica, V. Janakiram, and S. Md Abid Basha. "Microstrip Line Fed Leaky Wave Antenna with Shorting Vias for Wideband Systems." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 4 (August 1, 2016): 1725. http://dx.doi.org/10.11591/ijece.v6i4.pp1725-1731.

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In this work a complex structured shorted vias microstrip leaky wave antenna is designed and analysed. A Leaky wave antenna is a travelling wave structure with complex propagation constant. When shorting vias are loaded in a periodic structure the fundamental resonant mode shows some stop band characteristics and some of the modes will strongly attenuated. Three different types of iterations are examined in this work with and without defected ground structures. The defected ground structure based leaky wave antennas are showing better performance characteristics with respect to efficiency and phase. A micro strip line feeding with impedance of 50 ohms at both ports are providing excellent impedance matching to the conducting path on the microstrip surface. The shorting vias are suppressing certain higher order frequency bands and providing excellent wide band characteristics with low loss.
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8

Hallbjörner, P., M. Bergström, M. Boman, P. Lindberg, E. Ojefors, and A. Rydberg. "Millimetre-wave switched beam antenna using multiple travelling-wave patch arrays." IEE Proceedings - Microwaves, Antennas and Propagation 152, no. 6 (2005): 551. http://dx.doi.org/10.1049/ip-map:20045174.

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9

Takase, Y., C. P. Moeller, T. Seki, N. Takeuchi, T. Watari, R. Callis, A. Ejiri, et al. "Development of a fishbone travelling wave antenna for LHD." Nuclear Fusion 44, no. 2 (January 16, 2004): 296–302. http://dx.doi.org/10.1088/0029-5515/44/2/011.

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10

Nakano, H., N. Ikeda, and J. Yamauchi. "Quadrifilar conical helical antenna with travelling-wave current distribution." IEE Proceedings - Microwaves, Antennas and Propagation 144, no. 1 (1997): 53. http://dx.doi.org/10.1049/ip-map:19970977.

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Дисертації з теми "Travelling-wave antenna"

1

Bin-Ghunaim, I. R. "Travelling wave antennae in the UHF band." Thesis, University of Exeter, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379472.

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2

Öjefors, Erik. "Integrated Antennas : Monolithic and Hybrid Approaches." Doctoral thesis, Uppsala University, Department of Engineering Sciences, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7142.

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This thesis considers integration of antennas and active electronics manufactured on the same substrate. The main topic is on-chip antennas for commercial silicon processes, but hybrid integration using printed circuit board technology is also addressed.

The possible use of micromachining techniques as a means of reducing substrate losses of antennas manufactured on low resistivity silicon wafers is investigated. Compact dipole, loop, and inverted-F antennas for the 20-40 GHz frequency range are designed, implemented, and characterized. The results show significantly improved antenna efficiency when micromachining is used as a post-processing step for on-chip antennas manufactured in silicon technology.

High resistivity wafers are used in a commercial silicon germanium technology to improve the efficiency of dipole antennas realized using the available circuit metal layers in the process. Monolithically integrated 24 GHz receivers with on-chip antennas are designed and evaluated with regard to antenna and system performance. No noticeable degradation of the receiver performance caused by cross talk between the antenna and the integrated circuit is observed.

For low frequency antenna arrays, such as base station antennas, hybrid integration of active devices within the antenna aperture is treated. A compact varactor based phase shifter for traveling wave antenna applications is proposed and evaluated. Electrically steerable traveling wave patch antenna arrays, with the phase shifters implemented in the same conductor layer as the radiating elements, are designed and manufactured in microstrip technology. It is experimentally verified that the radiation from the feed network and phase shifters in the proposed antenna configuration is small.

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3

Dogan, Doganay. "Dual Polarized Slotted Waveguide Array Antenna." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613016/index.pdf.

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An X band dual polarized slotted waveguide antenna array is designed with very high polarization purity for both horizontal and vertical polarizations. Horizontally polarized radiators are designed using a novel non-inclined edge wall slots whereas the vertically polarized slots are implemented using broad wall slots opened on baffled single ridge rectangular waveguides. Electromagnetic model based on an infinite array unit cell approach is introduced to characterize the slots used in the array. 20 by 10 element planar array of these slots is manufactured and radiation fields are measured. The measurement results of this array are in very good accordance with the simulation results. The dual polarized antenna possesses a low sidelobe level of -35 dB and is able to scan a sector of ±
35 degrees in elevation. It also has a usable bandwidth of 600 MHz.
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4

Testa, Paolo Valerio, Bernhard Klein, Ronny Hahnel, Dirk Plettemeier, Corrado Carta, and Frank Ellinger. "On-Chip Integrated Distributed Amplifier and Antenna Systems in SiGe BiCMOS for Transceivers with Ultra-Large Bandwidth." De Gruyter, 2017. https://tud.qucosa.de/id/qucosa%3A38555.

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This paper presents an overview of the research work currently being performed within the frame of project DAAB and its successor DAAB-TX towards the integration of ultra-wideband transceivers operating at mm-wave frequencies and capable of data rates up to 100 Gbits–¹. Two basic systemarchitectures are being considered: integrating a broadband antenna with a distributed amplifier and integrate antennas centered at adjacent frequencies with broadband active combiners or dividers. The paper discusses in detail the design of such systems and their components, fromthe distributed amplifiers and combiners, to the broadband silicon antennas and their single-chip integration. All components are designed for fabrication in a commercially available SiGe:C BiCMOS technology. The presented results represent the state of the art in their respective areas: 170 GHz is the highest reported bandwidth for distributed amplifiers integrated in Silicon; 89 GHz is the widest reported bandwidth for integrated-system antennas; the simulated performance of the two antenna integrated receiver spans 105 GHz centered at 148GHz, which would improve the state of the art by a factor in excess of 4 even against III-V implementations, if confirmed by measurements.
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5

Vassilikos, Evangelos. "A study of the input impedance of travelling wave antennae." Thesis, Cranfield University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385793.

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6

LOPES, DANIEL T. "Caracterização de estruturas de ondas lentas helicoidais para utilização em, TWT de potência." reponame:Repositório Institucional do IPEN, 2007. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11596.

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Made available in DSpace on 2014-10-09T12:53:40Z (GMT). No. of bitstreams: 0
Made available in DSpace on 2014-10-09T13:58:44Z (GMT). No. of bitstreams: 0
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Dissertação (Mestrado)
IPEN/D
Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP
FAPESP:05/03612-0
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7

Nguyen, Trong Nghia. "Analysis, design and optimisation of various antenna types based on equivalent magnetic-current concept." Thesis, 2017. http://hdl.handle.net/2440/115415.

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The field equivalence principle is a classical technique, simple to use but remarkably effective to analyse aperture antennas. For most of thin planar structures, the aperture can be approximated as perfect magnetic conductor. Thus, the field equivalence principle typically yields a well-approximated equivalent problem that is much easier to solve than the original geometry. Inspired by this principle, a wide range of novel antenna structures are proposed in this thesis. These structures are further developed, optimised and tailored for various practical applications. Three main types of antennas are investigated, including travelling-wave antennas, low-profile monopolar antennas and reconfigurable antennas, corresponding to three major parts of this dissertation. The first part examines various realisations of travelling-wave half-mode substrate- integrated waveguide (HMSIW) antennas and their optimisations. This type of antenna is equivalent to a magnetic dipole. In this part, the core contribution is a generalised semi-analytical model to effectively analyse continuous-source travelling-wave antennas, based on which different optimisation techniques for bandwidth and radiation patterns are proposed. An optimisation procedure that includes parameter uncertainties is also demonstrated. The second part focuses on a type of low-profile monopolar antennas that can be interpreted as magnetic-current loops using the field equivalence principle. The main contributions are different configurations of symmetrical radiating slots that act as additional magnetic-current loop sources. The last major part covers a wide range of reconfigurable antennas targeting various applications. These includes a family of stub-loaded substrate-integrated antennas, a circular resonant cavity, and low-profile monopolar antennas that have been introduced in the second major part. These antennas not only cover three main application types of reconfigurable antennas, i.e. frequency- , polarisation-, and pattern-tunability, but also combine those in a single device. Moreover, significant improvements in performances compared to antennas available in the literature are demonstrated. Overall, the thesis provides different frameworks to design many types of antennas. The analytical models, using the field equivalence principle as a common fundamental technique, provide not only thorough understandings on antennas’ radiation mechanisms but also an effective means for rapid antenna optimisations.
Thesis (Ph.D.) -- University of Adelaide, School of Electrical and Electronic Engineering, 2017
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Частини книг з теми "Travelling-wave antenna"

1

Abri, Mehadji, Benzerga Fellah, and Hadjira Badaoui. "A Novel SIW Corrugated Travelling Wave Antennas Array for Microwave Imaging." In Advanced Control Engineering Methods in Electrical Engineering Systems, 565–74. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-97816-1_44.

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2

Dicky, Dmitry. "Geometry and Radiating Patterns of Segmented Long-Ring Travelling Wave Resonator Antennas." In Springer Proceedings in Physics, 507–13. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-81119-8_55.

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3

Losito, Onofrio, and Vincenzo Dimiccoli. "Travelling Planar Wave Antenna for Wireless Communications." In Wireless Communications and Networks - Recent Advances. InTech, 2012. http://dx.doi.org/10.5772/35914.

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Тези доповідей конференцій з теми "Travelling-wave antenna"

1

Wu, Qi, Jiexi Yin, Chen Yu, Haiming Wang, Wei Hong, and Jiro Hirokawa. "Millimeter-wave wideband circularly polarized antenna arrays using travelling-wave elements." In 2018 International Workshop on Antenna Technology (iWAT). IEEE, 2018. http://dx.doi.org/10.1109/iwat.2018.8379135.

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2

Bird, Trevor S., Wenzhi Wang, and Ronghong Jin. "Analysis of a travelling wave integrated slotted array antenna." In 2013 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2013. http://dx.doi.org/10.1109/aps.2013.6710688.

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3

Denisenko, I. B., and K. N. Ostrikov. "Surface impedance of travelling - wave antenna in magnetized plasma." In International Conference on Plasma Sciences (ICOPS). IEEE, 1993. http://dx.doi.org/10.1109/plasma.1993.593205.

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4

Ogurtsov, Stanislav, and Slawomir Koziel. "A Novel Conformal Travelling-Wave Circularly Polarized Microstrip Antenna Design." In 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting. IEEE, 2019. http://dx.doi.org/10.1109/apusncursinrsm.2019.8889238.

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5

Wang, Zhan, and Yuandan Dong. "Travelling-Wave SIW Transmission Line Using TE20 Mode for Millimeter-Wave Antenna Application." In 2020 IEEE/MTT-S International Microwave Symposium (IMS). IEEE, 2020. http://dx.doi.org/10.1109/ims30576.2020.9223890.

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6

Strickland, Peter C. "Power deposition properties of a travelling-wave applicator for interstitial hyperthermia." In 1992 Symposium on Antenna Technology and Applied Electromagnetics. IEEE, 1992. http://dx.doi.org/10.1109/antem.1992.7854303.

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7

Berolo, E., H. R. Khazaei, W. Wang, F. Ghannouchi, N. A. F. Jaeger, and F. Rahmatian. "Millimeter-wave laser modulation using III-V semiconductor travelling wave electro-optic Mach-Zehnder interferometer structures." In 1998 Symposium on Antenna Technology and Applied Electromagnetics. IEEE, 1998. http://dx.doi.org/10.1109/antem.1998.7861672.

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8

Malcoci, Andrei, Andreas Stohr, Andres Sauerwald, Sven Schulz та Dieter Jager. "Waveguide and antenna coupled travelling-wave 1.55-μm photodetectors for optical (sub)millimeter-wave generation". У Photonics Europe, редактори Andreas Stohr, Dieter Jager та Stavros Iezekiel. SPIE, 2004. http://dx.doi.org/10.1117/12.548966.

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9

Reddy, Sivarami, D. Ramakrishna, and Sambasivarao. "Design of an UWB travelling wave antenna for high power transient applications." In 2017 IEEE International Conference on Antenna Innovations & Modern Technologies for Ground, Aircraft and Satellite Applications (iAIM). IEEE, 2017. http://dx.doi.org/10.1109/iaim.2017.8402627.

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10

Lobato-Morales, H., S. Villarreal-Reyes, E. Guerrero-Arbona, E. Martinez-Aragon, R. A. Chavez-Perez, J. L. Medina-Monroy, and C. A. Figueroa-Torres. "A 2.45-GHz Circular Polarization Closed-Loop Travelling-Wave Antenna for Cubesats." In 2019 International Conference on Electronics, Communications and Computers (CONIELECOMP). IEEE, 2019. http://dx.doi.org/10.1109/conielecomp.2019.8673087.

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