Optimized self-diplexed antenna in gap waveguide technology

Sanchez-Cabello, Carlos; Rajo‐Iglesias, Eva

doi:10.1109/aps.2015.7304616

Cited by 4 publications

(5 citation statements)

References 7 publications

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“…The reactive components often arise from discontinuities within the line, although they can also be represented as reactances along the transmission line itself. To gain insights into the fundamental wave propagation phenomena associated with periodic structures [23,26], it is instructive to analyze a simplified structure as depicted in Fig. 2.…”

Section: Unit Cell Designmentioning

confidence: 99%

Highly-selective Ridge Gap Waveguide Based Filters for Multi-band Satellite Applications

Chhasatia¹,

Chaudhari²,

Patel³

2023

PIER M

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In this paper, a pioneering and innovative approach for multiple-band ridge gap waveguide (MB-RGW) based narrowband bandpass filter for satellite applications is presented. The MB-RGW represents a significant and emerging technological advancement within the domain of microwave and millimeter-wave engineering. It comprises a periodic structure that enables the propagation of electromagnetic waves along its axis. We have provided a detailed analysis of the MB-RGW, which includes its design, simulation, and experimental results. A prototype filter, designed according to specifications, was successfully produced with a fabricated circuit area measuring 42.25 mm×76.25 mm× 8.8 mm. We demonstrate that the MB-RGW can achieve multiple bands with a single structure, making it a versatile and efficient device for a wide range of applications. We also present a detailed analysis of the factors that affect the performance of the MB-RGW, including the geometry of the ridge and the spacing between ridges. Our experimental results show that the MB-RGW can achieve high levels of attenuation and isolation, making it a promising candidate for the use in microwave and millimeterwave circuits and systems. The experimental results show S 11 smaller than −20 dB over relative bandwidths, and S 21 has a maximum of −0.07 dB. The proposed filter demonstrates four resonances at frequencies of 10.6 GHz, 12.6 GHz, 14.7 GHz, and 17.1 GHz, catering to mobile and fixed radio locations as well as satellite applications. It exhibits a fractional bandwidth of 0.44% at 3 dB in the X-Band and approximately 0.57% to 0.61% at 3 dB bandwidth in the Ku-band. The filter offers a compact, cost-effective, and easily implementable solution for satellite communication systems, including space operations, earth exploration, satellite TV broadcasting, and fixed satellite services (FSS). Overall, this paper provides a comprehensive overview of the MB-RGW and its potential for the use in a range of applications.

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Section: Unit Cell Designmentioning

confidence: 99%

Highly-selective Ridge Gap Waveguide Based Filters for Multi-band Satellite Applications

Chhasatia¹,

Chaudhari²,

Patel³

2023

PIER M

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“…The most common type of bandpass filter used in this technology is the parallel-coupled line one as in [5]. However, although for lower frequency, their operation is suitable [23], some initial studies have shown that these filters in the Ka band suffer from tolerance problems. Specifically, the sensitivity of the filter to the position of the lines w.r.t.…”

Section: Diplexer Designmentioning

confidence: 99%

“…There are many examples of designs of antennas and circuits made in gap waveguide technology in the literature, but not that many in the case of the inverted microstrip version. Some examples can be found in [5][6][7][8][9][10][11]; also transitions to standard waveguides and transmission lines have been developped [12][13][14][15][16], the study of the optimal numeric port [17]; up to some of the various components that make up a RF front-end like antenna feeds [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]; beamforming Butler matrix [33,34] or filters [5,[35][36][37][38][39]. Few studies on diplexers with this technology have been published apart from this one using the groove version [40].…”

Section: Introductionmentioning

confidence: 99%

Ka-Band Diplexer for 5G mmWave Applications in Inverted Microstrip Gap Waveguide Technology

2020

Self Cite

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A new cost-efficient, low-loss Ka-band diplexer designed in inverted microstrip gap waveguide technology is presented in this paper. Gap waveguide allows to propagate quasi-TEM modes in the air between two metal plates without the need for contact between them by using periodic metasurfaces. The diplexer is realized by using a bed of nails as AMC (Artificial Magnetic Conductor), first modeled with a PMC (Perfect Magnetic Conductor) surface for design simplification, and two fifth order end-coupled passband filters (BPFs) along with a power divider. The experimental verification confirms that the two channels centered at 24 GHz and 28 GHz with 1 GHz of bandwidth show measured insertion losses of 1.5 dB and 2 dB and 60 dB of isolation between them. A slight shift in frequency is observed in the measurements that can be easily explained by the variation in the permittivity of the substrate.

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“…The first experimental verification of the Gap Waveguide technology in [49] has been followed to date by numerous circuit and antenna designs based on it. For example, filters are already available [52]- [59], couplers [60]- [66], diplexers [67]- [73],…”

Section: Gap Waveguide Technology Backgroundmentioning

confidence: 99%

“…In a first phase of the design process, parallel coupled line filters were chosen as those employed in [117]. However, although previous studies have been conducted in which the performance at frequencies as low as 10 GHz is as expected [67], for Ka-band, parallel coupled line filters suffer from large tolerance issues due to their position with respect to the pins under the substrate.…”

Section: 1 Diplexer Designmentioning

confidence: 99%

Low cost self-diplexed antenna in inverted microstrip gap waveguide technology

Sanchez-Cabello

Rajo‐Iglesias

2014

2014 International Symposium on Antennas and Propagation Conference Proceedings

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Well, what can I say but THANK YOU to all those who have contributed in one way or another to the success of this doctoral stage. Starting with my family, both the one I can still enjoy and the one that, unfortunately, is watching and caring for me from heaven.Thanks also to my colleagues in the lab: Náfsika, who was at the same point as I am now last year; to Nelson, for his help with the processing of measurement data; and to Jose Manuel, for his help in the design and fabrication of the antenna measurement brackets.I must also mention Ashraf (Sweden), Francisco (Chile) and Luisfer (Oviedo), co-authors with whom I have collaborated in several publications and projects with theoretical and fabrication aspects. Also to Diego, for his dedication and exquisite attention to detail during the antenna measurement process at the University of Alcalá de Henares. I also owe a big thank you to Prof. Ahmed Kishk, for his warm welcome in his research group at Concordia University during my stay in Montreal, which made the −20 o Canadian winter not so hard.And above all, thanks to the exceptional team that makes up the GEA Research Group, formed by José Luis, Luis and my tutor Eva at the head. Without her, nothing of this would have been possible. For transmitting me her enthusiasm, her work capacity and for being available at any time to solve the problems, not all of them technical, that have arisen during these 4 years.From this period, I take with me an excellent learning experience, but also the good fortune to have had the opportunity to get to know you.

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Optimized self-diplexed antenna in gap waveguide technology

Cited by 4 publications

References 7 publications

Highly-selective Ridge Gap Waveguide Based Filters for Multi-band Satellite Applications

Highly-selective Ridge Gap Waveguide Based Filters for Multi-band Satellite Applications

Ka-Band Diplexer for 5G mmWave Applications in Inverted Microstrip Gap Waveguide Technology

Low cost self-diplexed antenna in inverted microstrip gap waveguide technology

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