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Glide Symmetry to Prevent the Lowest Stopband of Printed Corrugated Transmission Lines
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2018 (English)In: IEEE Microwave and Wireless Components Letters, ISSN 1531-1309, E-ISSN 1558-1764, Vol. 28, no 9, p. 750-752, article id 8432475Article in journal (Refereed) Published
Abstract [en]

In this letter, we demonstrate that the dispersion properties of printed double-sided parallel-strip lines can be controlled by using glide symmetry. Glide symmetry is introduced in with corrugations in both strips of a double-sided line. We demonstrate that glide symmetry eliminates the stopband between first and second propagating modes and yields to a higher propagation constant, preserving its linearity, and the broadband nature of the underlying guiding technology. Thus, the glide-symmetric double-sided line can be designed to possess a high equivalent refractive index in an ultrawide range of frequencies. These exceptional properties have been numerically and experimentally validated. Finally, we demonstrate the possibilities of this technology with a specific design, a glide-symmetric double-sided parallel-strip line with filtering properties. Potential applications are low-dispersive leaky-wave antennas and electromechanical tunable phase shifters and filters.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc. , 2018. Vol. 28, no 9, p. 750-752, article id 8432475
Keywords [en]
Higher symmetries, metamaterials, microwave printed circuits, Microwave circuits, Refractive index, Strip telecommunication lines, Substrates, Traveling wave antennas, Dispersion properties, Double-sided parallel-strip lines, Equivalent refractive index, Propagation constant, Prototypes, Tunable phase shifters, Wavelength measurement, Dispersion (waves)
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-236725DOI: 10.1109/LMWC.2018.2858228ISI: 000443836300004Scopus ID: 2-s2.0-85052599284OAI: oai:DiVA.org:kth-236725DiVA, id: diva2:1257904
Note

Export Date: 22 October 2018; Article; CODEN: IMWCB; Correspondence Address: Padilla, P.; Department of Signal Theory, Telematics and Communications, Universidad de GranadaSpain; email: pablopadilla@ugr.es; Funding details: PRX17/00100; Funding details: PRX17/00630; Funding text: Manuscript received April 30, 2018; revised July 5, 2018; accepted July 17, 2018. Date of publication August 10, 2018; date of current version September 4, 2018. This work was supported in part by the Spanish Program of Research, Development, and Innovation under Grant TIN2016-75097-P and GrantUNGR15-CE-3311 and in part by the Salvador de Madariaga Program under Grant PRX17/00100 and Grant PRX17/00630. (Corresponding author: P. Padilla.) P. Padilla and J. F. Valenzuela-Vald├ęs are with the Department of Signal Theory, Telematics and Communications, Universidad de Granada, 18071 Granada, Spain (e-mail: pablopadilla@ugr.es). QC 20181023

Available from: 2018-10-23 Created: 2018-10-23 Last updated: 2018-10-23Bibliographically approved

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Quevedo-Teruel, Oscar

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