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Статті в журналах з теми "Travelling-wave antenna"

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Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 29 січня 2023

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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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Анотація:

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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Анотація:

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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11

Choi, S. T., and Y. H. Kim. "Microstrip travelling wave combline array antenna with reflection compensation." Electronics Letters 42, no. 21 (2006): 1196. http://dx.doi.org/10.1049/el:20061994.

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12

Saoudy, S., and M. Hamid. "Rigorous solution of a dipole antenna with lumped impedance loading." Canadian Journal of Physics 64, no. 11 (November 1, 1986): 1537–45. http://dx.doi.org/10.1139/p86-274.

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Анотація:

Hurd's Wiener–Hopf solution for the input impedance of long dipoles is extended to yield analytic expressions for the input admittance, current distribution, and far-field radiation pattern of a linear cylindrical dipole antenna symmetrically loaded with lumped impedances along its length. Results from this model provide a more accurate expression for the current distribution on an infinitely long dipole antenna than previously reported by Shen et al. and are in good agreement with reported experimental and theoretical data. The new expressions give a better insight into the concept of standing- and travelling-wave antennas as well as the difference between loading with passive and active loads.

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13

Jindal, Sakshi, Kritika Khanna, Brajlata Chauhan, Rashmi Choudhary, and Sandeep Sharma. "A Review of Slow Wave Structure of Travelling Wave Antenna using Waveguide." International Journal of Electronics and Communication Engineering 3, no. 1 (January 25, 2016): 1–5. http://dx.doi.org/10.14445/23488549/ijece-v3i1p101.

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14

Fusco, V. F. "Broad-band linear polarization sensor using a travelling-wave antenna." IEEE Transactions on Antennas and Propagation 51, no. 4 (April 2003): 908–12. http://dx.doi.org/10.1109/tap.2003.811111.

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15

Rauf, S., and J. A. Tataronis. "Nonlinear plasma waves with steady-state d.c. current." Journal of Plasma Physics 52, no. 3 (December 1994): 373–90. http://dx.doi.org/10.1017/s0022377800027203.

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Using a low-frequency, low-β model of a magnetized plasma, several nonlinear waves are studied. All the waves share the property that they have a self- consistent time-averaged current in the steady state. The first wave is a one- dimensional solitary wave that propagates obliquely to a static magnetic field. The wave magnetic field has a kink structure, which results in the production of the time-averaged current. A two-dimensional wave that propagates parallel to the background magnetic field is also discussed. This is a forced wave, requiring an antenna structure to support it in the steady state. The characteristics of the two-dimensional wave are dependent upon the wave speed, which in turn is determined by the speed of the travelling wave on the external antenna.

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16

Ito, Hiroshi, Fumito Nakajima, Tomofumi Furuta, and Tadao Ishibashi. "Continuous THz-wave generation using antenna-integrated uni-travelling-carrier photodiodes." Semiconductor Science and Technology 20, no. 7 (June 8, 2005): S191—S198. http://dx.doi.org/10.1088/0268-1242/20/7/008.

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17

Ito, H., F. Nakajima, T. Furuta, K. Yoshino, Y. Hirota, and T. Ishibashi. "Photonic terahertz-wave generation using antenna-integrated uni-travelling-carrier photodiode." Electronics Letters 39, no. 25 (2003): 1828. http://dx.doi.org/10.1049/el:20031195.

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18

Ding, Yinxing, Xiaokang Song, Ping Jiang, Rongzhen Jiao, Lulu Wang, Li Yu, and Jiasen Zhang. "Directional Optical Travelling Wave Antenna Based on Surface Plasmon Transmission Line." Laser & Photonics Reviews 12, no. 4 (February 12, 2018): 1700073. http://dx.doi.org/10.1002/lpor.201700073.

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19

Ragona, R., F. Durodié, A. Messiaen, J. Ongena, M. Van Schoor, S. Agzaf, T. Batal, et al. "Status of the WEST travelling wave array antenna design and results from the high power mock-up." Nuclear Fusion 62, no. 2 (January 11, 2022): 026046. http://dx.doi.org/10.1088/1741-4326/ac4467.

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Анотація:

Abstract This paper presents the current status of the WEST TWA antenna, its mock-up and a possible extrapolation to DEMO. The updated WEST TWA design has a reduced antenna length and features feeding and mechanical support from a single vessel port. A mock-up of the WEST TWA antenna was designed in 2019, manufactured during 2020 and installed in the TITAN test facility at the beginning of 2021. The results of the mock-up at low and high power, its diagnostic system and the prospects are explained. Extensions towards a TWA antenna for WEST and a possible TWA system for the future DEMO tokamak reactor are briefly discussed.

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20

Xing, Zijian, Haotian Li, Chow-Yen-Desmond Sim, Jianying Li, and Ziliang Li. "Study of a Multi-Loop Travelling Wave UHF RFID Near-Field Antenna." IEEE Access 8 (2020): 69829–37. http://dx.doi.org/10.1109/access.2020.2985992.

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21

Ma, Yuchen, and Junhong Wang. "Theoretical Modeling and Analysis of Circularly Polarized Annular Leaky-Wave Antenna Based on Travelling-Wave Structure." IEEE Access 9 (2021): 29392–400. http://dx.doi.org/10.1109/access.2021.3059700.

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22

Taghian, Fatemeh, Vahid Ahmadi, and Leila Yousefi. "Enhanced Thin Solar Cells Using Optical Nano-Antenna Induced Hybrid Plasmonic Travelling-Wave." Journal of Lightwave Technology 34, no. 4 (February 15, 2016): 1267–73. http://dx.doi.org/10.1109/jlt.2015.2511542.

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23

Derendyaev, D. N. "Radiation of a travelling-wave antenna in plasma in the whistler frequency band." Journal of Communications Technology and Electronics 62, no. 4 (April 2017): 337–45. http://dx.doi.org/10.1134/s1064226917040040.

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24

Ogawa, T., K. Hoshino, S. Kanazawa, M. Saigusa, T. Ido, H. Kawashima, N. Kasuya, et al. "Radiofrequency experiments in JFT-2M: Demonstration of innovative applications of a travelling wave antenna." Nuclear Fusion 41, no. 12 (December 2001): 1767–75. http://dx.doi.org/10.1088/0029-5515/41/12/304.

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25

Mikulasek, Tomas, Jan Puskely, Alexander G. Yarovoy, Jaroslav Lacik, and Holger Arthaber. "Transverse slot with control of amplitude and phase for travelling-wave SIW antenna arrays." IET Microwaves, Antennas & Propagation 14, no. 15 (December 16, 2020): 1943–46. http://dx.doi.org/10.1049/iet-map.2020.0069.

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26

Nakajima, F., T. Furuta, and H. Ito. "High-power continuous-terahertz-wave generation using resonant-antenna-integrated uni-travelling-carrier photodiode." Electronics Letters 40, no. 20 (2004): 1297. http://dx.doi.org/10.1049/el:20046431.

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27

Ganji, Jayesh, P. K. Sharma, and Harish V. Dixit. "Design and Simulation of an Interdigital Travelling Wave Antenna for Fast Wave Current Drive in SST-1 Tokamak." Fusion Engineering and Design 172 (November 2021): 112782. http://dx.doi.org/10.1016/j.fusengdes.2021.112782.

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28

Salman, A. Oral. "Millimeter-Wave Antenna of a Travelling-Wave Long Sinusoidal Slot in the Narrow Face of a Rectangular Waveguide." Journal of Infrared, Millimeter, and Terahertz Waves 31, no. 12 (October 27, 2010): 1438–51. http://dx.doi.org/10.1007/s10762-010-9732-y.

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29

Salman, A. Oral. "Millimeter-wave antenna of a travelling-wave long sinusoidal slot in the broad face of a rectangular waveguide." AEU - International Journal of Electronics and Communications 66, no. 8 (August 2012): 659–67. http://dx.doi.org/10.1016/j.aeue.2011.12.004.

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30

Chen, Teng-Kai, and Gregory H. Huff. "TRAVELLING WAVE MECHANISM AND NOVEL ANALYSIS OF THE PLANAR ARCHIMEDEAN SPIRAL ANTENNA IN FREE SPACE." Progress In Electromagnetics Research 145 (2014): 287–98. http://dx.doi.org/10.2528/pier14011901.

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31

Ito, H., T. Furuta, Y. Hirota, T. Ishibashi, A. Hirata, T. Nagatsuma, H. Matsuo, T. Noguchi, and M. Ishiguro. "Photonic millimetre-wave emission at 300 GHz using an antenna-integrated uni-travelling-carrier photodiode." Electronics Letters 38, no. 17 (2002): 989. http://dx.doi.org/10.1049/el:20020667.

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32

Rao, P. H., and V. F. Fusco. "Polarisation synthesis and beam tilting using a dual port circularly polarised travelling wave antenna array." IEE Proceedings - Microwaves, Antennas and Propagation 150, no. 5 (2003): 321. http://dx.doi.org/10.1049/ip-map:20030746.

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33

Dolati, Meisam, and Mohammad Saeed Majedi. "A wideband 45° inclined linear polarization travelling-wave slot array antenna with broadside radiation pattern." AEU - International Journal of Electronics and Communications 106 (July 2019): 103–7. http://dx.doi.org/10.1016/j.aeue.2019.05.007.

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34

Ito, H., H. Yamamoto, T. Yoshimatsu, and T. Ishibashi. "Enhanced‐output‐power broadband terahertz‐wave emitter based on slot‐antenna‐integrated uni‐travelling‐carrier photodiode." Electronics Letters 51, no. 21 (October 2015): 1670–71. http://dx.doi.org/10.1049/el.2015.1280.

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35

Sanchez-Olivares, Pablo, Jose-Luis Masa-Campos, Eduardo Garcia-Marin, Diego Barrio-Tejedor, and Pradeep Kumar. "Dual-linearly polarized travelling-wave array antenna based on triple plus slots fed by square waveguide." AEU - International Journal of Electronics and Communications 119 (May 2020): 153176. http://dx.doi.org/10.1016/j.aeue.2020.153176.

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36

Zhong, Zeng-Pei, and Xiao Zhang. "A Travelling-Wave-Fed Slot Spiral Antenna With Wide Axial-Ratio Bandwidth and Beamwidth for GNSS Applications." IEEE Open Journal of Antennas and Propagation 2 (2021): 578–84. http://dx.doi.org/10.1109/ojap.2021.3074287.

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37

Ding, Yinxing, Xiaokang Song, Ping Jiang, Rongzhen Jiao, Lulu Wang, Li Yu, and Jiasen Zhang. "Directional Optical Travelling Wave Antenna Based on Surface Plasmon Transmission Line (Laser Photonics Rev. 12(4)/2018)." Laser & Photonics Reviews 12, no. 4 (April 2018): 1870022. http://dx.doi.org/10.1002/lpor.201870022.

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38

P.M., Balasubramaniam, Arivoli S, and Prabhakaran N. "Performance of Signal Strength prediction in Data transmission Using Elliott wave Theory." International Journal of Computer Communication and Informatics 2, no. 1 (May 29, 2020): 62–69. http://dx.doi.org/10.34256/ijcci2017.

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Анотація:

The article describes an algorithm for predicting the future signals with the aid of past signal samples. In the real signal processing environment, the amplitude and unsystematic in phase signal are lead to more complex to estimation the signal, thereby, customer service is enhanced by forecast. The forecast of financial marketplace are usually done by means of Elliot wave theory. In this article possibility and applicability survey of the EW Theory is proposed in the paper towards the power of the signal forecast. In nature, the EW theory has free declining environment, and also uncomfortable based on the customer and base station and height of the antenna. The proposed algorithm has tested in real life conditions, considering both, the pedestrian persons and the people travelling at 60 Km/Hr. Consequently, the predicted result incorporates the practical signal strength based on increasing distribution utility, signal to intervention noise ratio (SNR) and instability at their subsequent time. The end result of the algorithm shows 68% of successful prediction.

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39

Tonn, D. A., and R. Bansal. "Travelling wave microstrip dipole antennas." Electronics Letters 31, no. 24 (November 23, 1995): 2064–66. http://dx.doi.org/10.1049/el:19951409.

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40

Roscoe, D., L. Shafai, and A. Ittipiboon. "Circularly polarised travelling-wave printed line antennas." Electronics Letters 25, no. 20 (1989): 1407. http://dx.doi.org/10.1049/el:19890941.

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41

Leuteritz, T., H. Farheen, S. Qiao, F. Spreyer, C. Schlickriede, T. Zentgraf, V. Myroshnychenko, J. Förstner, and S. Linden. "Dielectric travelling wave antennas for directional light emission." Optics Express 29, no. 10 (April 28, 2021): 14694. http://dx.doi.org/10.1364/oe.422984.

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42

Boutayeb, Halim, and Ke Wu. "ANALYSIS AND DESIGN OF MILLIMETER-WAVE CIRCULARLY POLARIZED SUBSTRATE INTEGRATED TRAVELLING-WAVE ANTENNAS." Progress In Electromagnetics Research C 49 (2014): 67–77. http://dx.doi.org/10.2528/pierc14013008.

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43

Ghalib, Asim, Mohammad S. Sharawi, Raj Mittra, Hussein Attia, and Atif Shammim. "Collocated MIMO travelling wave SIW slot array antennas for millimetre waves." IET Microwaves, Antennas & Propagation 15, no. 8 (April 9, 2021): 815–26. http://dx.doi.org/10.1049/mia2.12110.

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44

Hussain, Bilal, Henrique M. Salgado, and Luís M. Pessoa. "Wide Scanning Angle Millimetre Wave 1 × 4 Planar Antenna Array on InP at 300 GHz." Applied Sciences 11, no. 15 (July 31, 2021): 7117. http://dx.doi.org/10.3390/app11157117.

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Анотація:

The design of a uniformly spaced 1 × 4 linear antenna array using epitaxial layers of benzocyclobutene over an InP substrate is demonstrated. The array elements are conjugately matched with a uni-travelling carrier photodiode at the input. The phased array is optimised to counteract mutual coupling effects by introducing metal strips with isolated ground planes for each radiating element. The proposed antenna array can provide a gain of 10 dBi with a gain variation of ±3 dB. The array operates over a bandwidth of 10 GHz (295–305 GHz) with a wide scanning angle of 100° in the broadside.

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45

Batal, T., R. Ragona, J. Hillairet, C. Yu, J.-M. Bernard, P. Mollard, F. Farina, M. Firdaouss, and Q. Yang. "Design and thermal-structural analysis of a high power ICRH travelling wave array antennas." Fusion Engineering and Design 166 (May 2021): 112325. http://dx.doi.org/10.1016/j.fusengdes.2021.112325.

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46

Patra, Kaushik, Sayantan Dhar, and Bhaskar Gupta. "Transmission line model for analysis of microstrip travelling wave antennas with right angled bends." AEU - International Journal of Electronics and Communications 84 (February 2018): 375–86. http://dx.doi.org/10.1016/j.aeue.2017.11.018.

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47

Gong, A., S. Rode, U. B. Kaupp, G. Gompper, J. Elgeti, B. M. Friedrich, and L. Alvarez. "The steering gaits of sperm." Philosophical Transactions of the Royal Society B: Biological Sciences 375, no. 1792 (December 30, 2019): 20190149. http://dx.doi.org/10.1098/rstb.2019.0149.

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Sperm are highly specialized cells, which have been subject to substantial evolutionary pressure. Whereas some sperm features are highly conserved, others have undergone major modifications. Some of these variations are driven by adaptation to mating behaviours or fitness at the organismic level. Others represent alternative solutions to the same task. Sperm must find the egg for fertilization. During this task, sperm rely on long slender appendages termed flagella that serve as sensory antennas, propellers and steering rudders. The beat of the flagellum is periodic. The resulting travelling wave generates the necessary thrust for propulsion in the fluid. Recent studies reveal that, for steering, different species rely on different fundamental features of the beat wave. Here, we discuss some examples of unity and diversity across sperm from different species with a particular emphasis on the steering mechanisms. This article is part of the Theo Murphy meeting issue ‘Unity and diversity of cilia in locomotion and transport’.

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48

Li, Jiahao, Riccardo Ragona, Julien Hillairet, Wei Zhang, Zhaoxi Chen, Xinjun Zhang, and Qingxi Yang. "Pre-conceptual studies of Travelling Wave Array antenna for EAST." Plasma Physics and Controlled Fusion, January 10, 2023. http://dx.doi.org/10.1088/1361-6587/acb1d3.

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Анотація:

Abstract One of the primary problems of Ion Cyclotron Range of Frequency (ICRF) systems in magnetic confinement experiments is to couple large amount of Radio Frequency (RF) wave power through the plasma cut-off layer within the voltage limits of antenna system. Travelling Wave Array (TWA) antennas have higher coupling than conventional ICRF antennas, which is manifested in sharp and optimized k// spectrum. As a pre-study of TWA applications in the tokamaks, a TWA antenna with six consecutive straps and double-fin capacitors was conceptually designed for the Experimental Advanced Superconducting Tokamak (EAST). The antenna geometry was optimized to seek a low reflection coefficient for EAST ICRF heating scenarios. The design and simulation results of the TWA antenna are briefly presented. The results of frequency sweep in vacuum show that a bandwidth of approximately 3 MHz with S11< -30 dB can be obtained. The peak of the k// power spectrum is adjusted to～3-4 m-1 at the frequency of 34-36 MHz. In addition, the properties of power flow and characteristics of wave field are also discussed by modelling the plasma facing the TWA antenna using a cold plasma medium. The results in this study may provide some reference and guidance for the study of TWA antennas and other ICRF antennas in magnetic confined fusion devices like EAST or the Chinese Fusion Engineering Test Reactor (CFETR).

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49

Narjala, Sri, Anitha Vaddinuri, and K. Rama Naidu. "X-Band Miniaturized Frequency Reconfigurable Travelling Wave Antenna." International Journal of Electronics Letters, April 25, 2022. http://dx.doi.org/10.1080/21681724.2022.2068194.

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50

Narjala, Sri, Anitha Vaddinuri, and K. Rama Naidu. "X-Band Miniaturized Frequency Reconfigurable Travelling Wave Antenna." International Journal of Electronics Letters, April 25, 2022. http://dx.doi.org/10.1080/21681724.2022.2068194.

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