DocumentCode :
1205431
Title :
Guided-wave characteristics of waveguide based periodic structures loaded with various FSS strip layers
Author :
Kshetrimayum, Rakhesh S. ; Zhu, Lei
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Volume :
53
Issue :
1
fYear :
2005
Firstpage :
120
Lastpage :
124
Abstract :
In this paper, frequency-dependent guided-wave characteristics of waveguide based periodic structures loaded with transversal strip layers of frequency selective surfaces (FSS) are extensively studied in terms of per-unit-length transmission parameters, i.e., complex propagation constant and complex wave impedance. Such a periodic structure with various FSS strip layers are in theory characterized using the hybrid method of moments (MoM)-immittance approach so as to derive these two per-unit-length parameters over a wide frequency range. At first, the extracted phase constant of a simple periodic waveguide, loaded with rectangular patch layer, is compared with the available analytical results, thus validating the approach utilized here. Next, the three novel periodic waveguides, loaded with plus, square loop and Jerusalem cross FSS strip layers, are investigated. It is observed that there is slow-wave behavior in the lower passband for the first two whereas the third one exhibits both fast-wave and slow-wave propagation behaviors in the lower passband. Besides, the third one shows the attractive backward wave propagation within the partial passband, thus introducing a novel waveguide-based artificial negative refractive index metamaterial (NRIM).
Keywords :
frequency selective surfaces; metamaterials; method of moments; periodic structures; waveguide theory; Jerusalem cross FSS strip layers; MoM; NRIM; artificial negative refractive index metamaterial; backward wave propagation; complex propagation constant; complex wave impedance; fast-wave propagation; frequency selective surfaces; frequency-dependent guided-waves; guided-wave characteristics; hybrid method of moments; immittance approach; lower passband; partial passband; per-unit-length transmission parameters; rectangular patch layer; simple periodic waveguide; slow-wave behavior; slow-wave propagation; square loop strip layers; transversal strip layers; waveguide based periodic structures; Frequency selective surfaces; Loaded waveguides; Moment methods; Passband; Periodic structures; Propagation constant; Rectangular waveguides; Strips; Surface impedance; Waveguide components;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2004.840527
Filename :
1377580
Link To Document :
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