Influence of reflected waves at a terminal of nonreciprocal phase-shift CRLH transmission lines on the leaky wave radiation

2009 ◽  
Author(s):  
Ken Horikawa ◽  
Tetsuya Ueda ◽  
Masahiro Akiyama
Keyword(s):  
Phase Shift ◽  
Transmission Lines ◽  
Wave Radiation ◽  
Leaky Wave ◽  
Reflected Waves

scholarly journals Tilted-Beam Antenna Based on SSPPs-TL with Stable Gain

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 3288
Author(s):  
Dujuan Wei ◽  
Youlin Geng ◽  
Pengquan Zhang ◽  
Zhonghai Zhang ◽  
Chuan Yin
Keyword(s):  
Surface Plasmon ◽  
Slow Wave ◽  
Surface Plasmon Polaritons ◽  
Transmission Lines ◽  
Design Theory ◽  
Metal Plate ◽  
Wave Radiation ◽  
Gain Bandwidth ◽  
Plasmon Polaritons ◽  
Spoof Surface Plasmon Polaritons

In this paper, a titled-beam antenna based on spoof surface plasmon polaritons (SSPPs) transmission lines (TLs) is proposed. The parallel SSPPs-TL is a slow-wave TL, which is able to limit waves in the TL strictly. By periodically introducing a set of tapered stubs along the SSPPs-TL, the backward endfire beams are formed by the surface waves in the slow-wave radiation region. Then, through the placement of a big metal plate below the endfire antenna, the backward endfire beams are tilted, and the tilted angle of the beams are steered by the distance of the metal plate and antenna. Over the band of 5.7 GHz~7.0 GHz, the tilted antenna performs constant shapes of radiation patterns. The gain keeps stable at around 12 dBi and the 1-dB gain bandwidth is 20%. The measured results of the fabricated prototypes confirm the design theory and simulated results.

Forward and backward leaky wave radiation in split-ring-resonator-based metamaterials

2007 ◽  
Vol 1 (1) ◽  
pp. 65 ◽  
Author(s):  
I. Arnedo ◽  
J. Illescas ◽  
M. Flores ◽  
T. Lopetegi ◽  
M.A.G. Laso ◽  
...  
Keyword(s):  
Ring Resonator ◽  
Split Ring Resonator ◽  
Wave Radiation ◽  
Leaky Wave ◽  
Split Ring

scholarly journals Extending the Application of One-Terminal Fault Location Method Available in Actual Time Domain Relay

2020 ◽  
Author(s):  
Gustavo A. Cunha ◽  
Felipe V. Lopes ◽  
Tiago H. Honorato
Keyword(s):  
Transmission Lines ◽  
Time Domain ◽  
Traveling Wave ◽  
Fault Location ◽  
Reflected Waves ◽  
Location Method ◽  
Actual Time ◽  
The One

Traveling wave-based fault location has attracted more and more attention from industries worldwide. This theory allowed the implementation of functions in order to increase the reliability of the obtained fault location results. Among existing functions, the classical one-terminal method requires the detection of the wave reflected from the fault, which is still considered a challenging task. A commercial relay was released with a function able to identify these reflected waves by evaluating patterns and weighted hypotheses, identifying the wavefront most likely to be the one re ected from the fault. However, as this function is embedded into a relay, it is not possible to change the method settings. Thus, this paper presents a validation of this function which is implemented externally to the relay. Besides, its application is extended for transmission lines to which the relay can not be applied, such as huge HVDC lines.

scholarly journals LEAKY-WAVE REGIMES ON MEMS-LOADED TRANSMISSION LINES FOR MM-WAVE APPLICATIONS

2010 ◽  
Vol 13 ◽  
pp. 157-171 ◽  
Author(s):  
Tomas Zvolensky ◽  
Dmitry Chicherin ◽  
Antti V. Raisanen ◽  
Constantin R. Simovski
Keyword(s):  
Transmission Lines ◽  
Leaky Wave
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