Micromachined ridge gap waveguide and resonator for millimeter-wave applications

Rahiminejad, Sofia; Zaman, Ashraf Uz; Pucci, Elena; Raza, Hasan; Vassilev, Vessen; Haasl, Sjoerd; Lundgren, Per; Kildal, Per-Simon; Enoksson, Peter

doi:10.1016/j.sna.2012.02.036

Cited by 32 publications

(44 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The folded groove waveguide can be fabricated successfully using UV photolithography and electroforming [23] or deep-reactive ion etching [24] at 220 GHz. In addition, in [25], the deep-reactive ion etching method has been successfully used and discussed for fabrication of a similar bed of nails at 220 GHz. Accordingly, both parts of the proposed GGFW SWS can be fabricated by the deep-reactive ion etching method and then placed with the gap distance of g from each other [13], [15], [25].…”

Section: Design Description and Electromagnetic Propertiesmentioning

confidence: 99%

A Novel Gap-Groove Folded-Waveguide Slow-Wave Structure for G-Band Traveling-Wave Tube

Tahanian

Dadashzadeh

2016

IEEE Trans. Electron Devices

View full text Add to dashboard Cite

In this paper, a novel gap-groove folded-waveguide slow-wave structure (SWS) for high-efficiency G-band travelingwave tube (TWT) is presented. In this novel tube, a sheet electron beam passes through the small gap between a bed of nails and a folded groove realized in a metallic plate. The bed of nails and the metallic plate form a high impedance structure-perfect electric conductor parallel plate waveguide, which prevents the fields from leaking transverse to the propagation direction. The phase velocity of the proposed SWS has been analytically calculated and the results show good agreement with those obtained using Eigenmode solver of computer simulation technology (CST). Meanwhile, the simulation results indicate that the interaction impedance of the proposed SWS is considerably higher than the conventional folded-waveguide SWS. Furthermore, employing a proper phase velocity taper in the end section of circuit leads to increasing the efficiency of the proposed TWT. According to Particle-in-cell simulations performed by the CST Particle Studio, the designed TWT can generate a peak power of 225 W at 220 GHz, corresponding to the maximum gain and efficiency of 42.7 dB and 14.9%, respectively. IndexTerms-Folded waveguide (FW), gap-groove waveguide (GGW), slow-wave structure (SWS), travelingwave tube (TWT).

show abstract

Section: Design Description and Electromagnetic Propertiesmentioning

confidence: 99%

A Novel Gap-Groove Folded-Waveguide Slow-Wave Structure for G-Band Traveling-Wave Tube

Tahanian

Dadashzadeh

2016

IEEE Trans. Electron Devices

View full text Add to dashboard Cite

show abstract

“…The proposal is based on Carbon Nanotubes (CNT) [877], which are allotropic 10 forms of carbon with extraordinary electrical, thermal and mechanical properties. The authors (which are the same as in [869]- [870], [875]) indicate that, despite of some benefits of Si microfabrication, it results time consuming when etching high ratio structures. Conversely, CNT can grow hundreds of micrometers within minutes.…”

Section: High Frequency Designs and Manufacturing Techniquesmentioning

confidence: 94%

“…Nevertheless, GWs features suggest that these waveguides not only are able to introduce performance enhancement at the lower mm-wave frequencies, but this improvement maybe even more appreciable at higher frequencies inasmuch as the undesired effects caused by bad metal contact between joints, or dielectric losses, increase with the frequency. Therefore, although most of the research is nowadays focused on the Ka and V bands, some works have recently start to prove the suitability of GW technology at higher frequencies in the mm-wave band [869]- [875].…”

Section: High Frequency Designs and Manufacturing Techniquesmentioning

confidence: 99%

“…This work line has driven to the work [875] in 2016, where it is presented a 4 element linear slot array with planar distribution network, working around f 0 = 100 GHz, manufactured with the same process as that employed in [869] and [870]. A WR-10 to RGW transition, similar to that of [813] provides the device feeding.…”

Section: High Frequency Designs and Manufacturing Techniquesmentioning

confidence: 99%

“…For instance, to the authors experience, CNT devices are manufactured 50 times faster than DRIE ones. Also, the designs in [869] were manufactured using SU-8 in [879] with a total time process of 5 hours front the 2 hours provided by the CNT manufacturing process. A RGW resonator to work in the WR-3 operation band (220 GHz-325 GHz) is designed.…”

Section: High Frequency Designs and Manufacturing Techniquesmentioning

confidence: 99%

See 2 more Smart Citations

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

Verdú¹,

Antonio²

View full text Add to dashboard Cite

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 ...

show abstract

Electromagnetic Band Gap (EBG) High-Q Resonator Concepts at mm-Waves

Jiménez-Sáez

2022

Springer Theses

View full text Add to dashboard Cite

Micromachined ridge gap waveguide and resonator for millimeter-wave applications

Cited by 32 publications

References 7 publications

A Novel Gap-Groove Folded-Waveguide Slow-Wave Structure for G-Band Traveling-Wave Tube

A Novel Gap-Groove Folded-Waveguide Slow-Wave Structure for G-Band Traveling-Wave Tube

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

Electromagnetic Band Gap (EBG) High-Q Resonator Concepts at mm-Waves

Contact Info

Product

Resources

About