Millimetrewave systems—past, present and future

Olver, A.D.

doi:10.1049/ip-f-2.1989.0006

Cited by 30 publications

(37 citation statements)

References 7 publications

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“…With the advances of process technologies and low-cost integration solutions, this technology has started to gain a great deal of momentum from academia, industry, and standardization body [1].…”

Section: Introductionmentioning

confidence: 99%

Improving and Extending Indoor Connectivity Using Relay Nodes for 60 GHz Applications

Alkhawatra¹,

Qasem²

2016

ijacsa

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Abstract-a 60 GHz wireless system can provide very high data rates. However, it has a tremendous amount of both Free Space Path Loss (FSPL) and penetration loss. To mitigate these losses and extend the system range; we propose techniques for using relay nodes. The relay node has been positioned correctly in order to shorten the distance between a source and a destination, this gave a reduction in the FSPL value. In addition, the positioning of the relay node correctly gave an alternative Line of Sight (LoS) to overcome the penetration loss caused by human bodies. For the last challenge, the considerably short range of the wireless network in the 60 GHz band, the range has been extended by applying the multi-hop communication with the concept of relay nodes selection. The length of the room was doubled and still get the same losses as if there was no expansion. All three techniques were modeled inside 'Wireless InSite' by three scenarios. The first scenario was a conference room with no obstacles to focus on FSPL. In the second scenario, the same conference room was modeled but human bodies have been taken into consideration to check the penetration loss effect. The final scenario was the extended version of the first scenario to deal with the small range issue.

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Section: Introductionmentioning

confidence: 99%

Improving and Extending Indoor Connectivity Using Relay Nodes for 60 GHz Applications

Alkhawatra¹,

Qasem²

2016

ijacsa

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“…At the same time, research and development work in mm-and submm-wave technology is still ongoing and gaining momentum; this is mainly because radar, radio navigation, communication equipment, guidance, and control systems tend to enhance their capabilities which can be achieved over these bands alone (specifically, we have to deal with resolving power, detection, hitting of a target, noise immunity, and speed of response) [1][2][3]. As regards the MW-technology, we are concerned with designing the devices and the components having required parameters.…”

Section: Introductionmentioning

confidence: 99%

High -Factor Wideband Resonators for Millimeter and Submillimeter Applications

Gaevskaya

Karpovich

Rodionova

2012

International Journal of Microwave Science and Technology

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Physical principles for designing a multipurpose set of high Q-factor quasioptical and corrugated resonators with automatic frequency tuning (Q > 6 × 10 4 , VSWR < 1.6) that can operate in the frequency band from 37.5 to 400 GHz are presented. The electrodynamical calculation methods of resonators, the constructive particularities of resonators, the methods and results of the experimental researches are considered. This set of resonators can be used as a universal measuring resonator for measuring radiosignal fluctuations and parameters of different media, in particular, nanotube composites and high-temperature superconductors.

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“…Both limits suggests good information about what can be encountered in the mm-wave band in terms of suitable applications and technology. Some years ago, in the 80s, when the mm-wave scenario had not the present technological maturity suggesting an imminent commercial use of this band, microwave and optical techniques were both considered to conquer the realm of mm-wave frequencies [49], [598], curiously, in a similar manner than THz frequencies are treated now. Over time it has been total imposition of microwave techniques, which have evolved very well up in frequency these last three decades.…”

Section: Definitionmentioning

confidence: 99%

“…Similarly as the definition of the THz band was loosely defined sometimes due to scientific reasons (dominant microwave-band or optical background of the involved researchers), the mm-wave suffers as well from some particular re-definitions, but in this case coming from commercial point of view of the involved applications and technology. In the good overview of Olver [598], the band is suggested to be extended downwards sometimes to 20 GHz in order to encompass frequencies of the microwave regime that are (maybe not any more) as well technologically challenging. Other authors coming from the industry (SAMSUNG ) [600], quite focused in the mobile com- munications area, explicitly extend it down even further, giving a lower limit of f = 3 GHz, arguing that similar propagation characteristics can be appreciated, and to distinct it from the conventionally used spectrum.…”

Section: Definitionmentioning

confidence: 99%

“…The first treatment of mm-waves started only few years after the discovery of electromagnetic waves by Heinrich Hertz. Even more, it was the intense research carried by Hertz the actual trigger for the consideration of such high frequencies [598]. Hertz was trying to prove experimentally that electromagnetic waves and light were the same concept.…”

Section: Historical Backgroundmentioning

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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Millimetrewave systems—past, present and future

Cited by 30 publications

References 7 publications

Improving and Extending Indoor Connectivity Using Relay Nodes for 60 GHz Applications

Improving and Extending Indoor Connectivity Using Relay Nodes for 60 GHz Applications

High -Factor Wideband Resonators for Millimeter and Submillimeter Applications

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

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