A V-Band Inverted Microstrip Gap Waveguide End-Coupled Bandpass Filter

Brazález, Astrid Algaba; Kildal, Per-Simon

doi:10.1109/lmwc.2016.2538598

Cited by 44 publications

(31 citation statements)

References 7 publications

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“…There are four different realizations of gap waveguides -ridge gap waveguide, groove gap waveguide, inverted microstrip gap waveguide (IMGW) [6] and microstrip-ridge gap waveguide [9]. In the recent years some achievements on gap waveguide technology in the fields of passive element circuits [10]- [12], packaging technology [13] and high gain antennas [14]- [17] have been reported. Among the four types of the realized structures the IMGW has an advantage over the other three: its pin plate has a uniform pattern that can be easily manufactured.…”

Section: Introductionmentioning

confidence: 99%

Analytical Solutions to Characteristic Impedance and Losses of Inverted Microstrip Gap Waveguide Based on Variational Method

Liu

Yang

Zaman

2018

IEEE Trans. Antennas Propagat.

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This paper initially introduces analytical solutions to newly invented inverted microstrip gap waveguide (IMGW). By applying the classical variational method the characteristic impedance, dielectric loss and conductor loss of the IMGW are obtained. The calculated characteristic impedance and losses of IMGWs with the present analytical method have been verified by commercial software CST. Furthermore, we have theoretically proved that the total loss of electromagnetic energy in the IMGW is much lower than that of covered microstrip line in millimeter waves (mmWs). Thereby, the IMGW has big advantages over covered microstrip lines for high-gain, high-efficiency array antennas in mmWs.Index Terms-inverted microstrip gap waveguide, variational method, Green's function, characteristic impedance, dielectric loss and conductor loss.Jinlin Liu (M'17) received the B.Sc. degree in Communications Engineering from the University of . He has authored and coauthored about 60 journal articles and about 150 conference papers, and more than 10 granted patents. His research interests include 60-140GHz antennas, terahertz antennas, MIMO antennas, ultra-wideband (UWB) antennas and UWB feeds for reflector antennas, UWB radar systems, UWB antennas in near-field sensing applications, hat-fed antennas, reflector antennas, radome design, and computational electromagnetics.Ashraf Uz Zaman (M'14) was born in Chittagong, Bangladesh. He received the B.Sc. degree in electrical and electronics engineering from the Chittagong University of Engineering and Technology, Chittagong, and the M.Sc. and Ph.D. degrees from the Chalmers University of Technology, Gothenburg, Sweden, in 2007 and 2013, respectively. He is currently an Assistant Professor with the Communication and Antenna Systems Division, Chalmers University of Technology. His current research interests include millimeter-wave planar antennas in general, gap waveguide technology, frequency-selective surfaces, microwave passive components, and packaging techniques and integration of MMICs with the antennas.

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Section: Introductionmentioning

confidence: 99%

Analytical Solutions to Characteristic Impedance and Losses of Inverted Microstrip Gap Waveguide Based on Variational Method

Liu

Yang

Zaman

2018

IEEE Trans. Antennas Propagat.

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“…RGW characterizes its simple mechanical assembly, low losses, wider bandwidth compared to rectangular waveguide. Many applications in gap waveguide technology such as power divider, filter, coupler, and slot antenna have been realized [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Design and Measurement of a Novel Seamless Scanning Leaky Wave Antenna in Ridge Gap Waveguide Technology

Dong¹,

Wang²,

Xue³

et al. 2017

PIER M

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Abstract-The design and measurement of a novel seamless scanning leaky wave antenna in ridge gap waveguide technology are presented. The impedance matching technique is employed to eliminate the open-stopband (OSB) effect which produces a discontinuity for a seamless scanning leaky wave antenna. Ridge gap waveguide proposed recently is used as the feed structure. The antenna radiates from longitudinal slots of which the leakage constant is designed small to ensure a high directivity. Subsequently, for simplicity, a transition from Ku-band standard waveguide port (WR62) to ridge gap waveguide is designed, which operates within Ku-band with S 11 below −15 dB. A prototype has been fabricated, and measurements support the simulations obtained by full-wave analysis. The proposed antenna bandwidth is from 12.5 GHz to 17.4 GHz while seamless scanning is achieved from backward to forward, particularly including broadside radiation. The scanning range is from −9 • to 19 • with an average gain of 18.3 dB.

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“…In the last years there has been also appreciable activity in the research area of GW filters and diplexers [835]- [849]. As it occurs with the antennas, there is a favorite topology or objective, but other proposals are also found.…”

Section: Filters and Diplexersmentioning

confidence: 99%

“…The coupling has been classically horizontal [835]- [842], but also vertical topologies have been recently proposed [845]. Alternatively, but with less work published, notch filters by using single and dual mode cavities [846], or SSGW filters are also found [847]- [849].…”

Section: Filters and Diplexersmentioning

confidence: 99%

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Analysis and design of efficient passive components for the millimeter-wave and THz bands

Verdú¹,

Antonio²

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To my parents, brother and sister."Success is peace of mind which is a direct result of self-satisfaction in knowing you made the effort to become the best of which you are capable."Jonh Wooden "Lo que con mucho trabajo se adquiere, más se ama." Aristóteles AgradecimientosLa realización de esta tesis ha implicado no pocos años de trabajo y esfuerzo. Durante este importante periodo de mi vida han sido muchas las personas han estado a mi lado, brindándome su apoyo, ayuda, cariño y amor. Ya sea de una forma u otra, todas estas personas han contribuido a que este trabajo haya sido posible dando como fruto esta tesis. A todos ellos, me gustaría dedicarles un agradecimiento muy especial de todo corazón.Sin duda alguna, debo dar las gracias en primer lugar a mi director de tesis Mariano Baquero. Mariano, has sido un padre para mí profesionalmente hablando. Te conocí como alumno en las clases de Microondas, en las cuales me abriste la puerta a un conocimiento que me fascinó.Recuerdo perfectamente cuando fui a verte para preguntarte si podrías dirigirme el Proyecto Final de Carrera, y desde ese año 2009 hemos estado trabajando juntos. Quiero agradecerte no sólo haberme dado la oportunidad de trabajar en cada momento en elárea que más me ha gustado, sino el haberte preocupado por mí a nivel personal, velando siempre por mis intereses, ayudándome a desarrollarme personal y profesionalmente. Extiendo en este sentido mi agradecimiento a Miguel Ferrando. Si Mariano es el padre, tu serías sin duda el abuelo. Sin tu ayuda, la beca para la realización de esta tesis y los proyectos que han respaldado la misma no hubieran sido posibles. Tu esfuerzo ha permitido que el Grupo de Radiación Electromagnética (GRE) esté hoy dónde esta y que sus miembros nos beneficiemos de un entorno de trabajo excelente, produciendo trabajo de calidad. Debo agradecerte también tus siempre innovadoras ideas, algunas de las cuales se han convertido en una realidad plasmada en esta tesis.Una mención especial merece Daniel Sánchez. Dani, aunque tu nombre no figure como co-director bien sabes que podría estarlo. Jamás podré agradecerte lo suficiente la ayuda que me has prestado. Cuántas horas dedicadas a enseñarme en un sin fin de aspectos sin esperar nada a cambio, apoyándome también en los momentos difíciles, siempre presentes en una tesis. Bien sabes que lo mismo has hecho con cada uno tus compañeros, por eso eres el pilar del GRE Dani.Otra persona a la que estoy muy agradecido es a Vicente Boria. Tu activa colaboración en la dirección de esta tesis ha sido indispensable para la consecución de los resultados más relevantes de la misma. Sugeriste muy acertadamente una estancia en la Queen's University of Belfast, y me abriste la puerta a nuevas líneas de investigación en las cuales seguimos trabajando actualmente. Gracias por preocuparte por mi a nivel profesional y personal.En elámbito anterior, extiendo los agradecimientos a todo el GRE. It is also very important for me to acknowledge Prof. Vince Fusco. Thank you for hosting me in your group in Belfast ...

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A V-Band Inverted Microstrip Gap Waveguide End-Coupled Bandpass Filter

Cited by 44 publications

References 7 publications

Analytical Solutions to Characteristic Impedance and Losses of Inverted Microstrip Gap Waveguide Based on Variational Method

Analytical Solutions to Characteristic Impedance and Losses of Inverted Microstrip Gap Waveguide Based on Variational Method

Design and Measurement of a Novel Seamless Scanning Leaky Wave Antenna in Ridge Gap Waveguide Technology

Analysis and design of efficient passive components for the millimeter-wave and THz bands

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