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DTSTART:20211003T030000
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DTSTAMP:20210819T225914Z
UID:67E92A8A-566C-4F6C-B957-2D44827357F6
DTSTART;TZID=Australia/Canberra:20210819T160000
DTEND;TZID=Australia/Canberra:20210819T170000
DESCRIPTION:Metasurfaces are artificial composite materials with subwavelen
 gth inclusions which have been shown to enable very versatile manipulation
  of electromagnetic waves. Particularly at microwave frequencies\, the con
 cept is widely explored and the scope of previous methods of wavefront man
 ipulation such as frequency selective surfaces and leaky-wave antennas has
  been largely extended. Emerging applications like next generation wireles
 s communication and radar sensing could benefit from novel metasurface-bas
 ed antennas which have been recently proposed.\nAlthough most of these eme
 rging applications use frequencies of operation in the millimeter wave (mm
 -wave) band\, research on metasurfaces in this band is still scarce. Many 
 secondary effects known in the microwave community such as fabrication con
 straints and material losses are more severe using mm-waves and they signi
 ficantly hamper the development of efficient devices. The aim of this thes
 is is to investigate metasurface architectures suited for mm-wave frequenc
 ies and to explore promising related antenna concepts. Causes for signific
 ant performance degradation in printed circuit metasurfaces for mm-waves a
 re identified and synthesis techniques with which they can be minimized ar
 e proposed. The effectiveness of the proposed synthesis framework is verif
 ied by comprehensive experimental works. Building on this synthesis approa
 ch\, two kinds of antenna systems are experimentally demonstrated\, based 
 on transmissive metasurfaces and on leaky-wave antennas.\n\nCo-sponsored b
 y: Advanced Electromagnetics Group\, UNSW Canberra\n\nSpeaker(s): Andreas 
 Olk\, \n\nVirtual: https://events.vtools.ieee.org/m/279361
LOCATION:Virtual: https://events.vtools.ieee.org/m/279361
ORGANIZER:david.powell@adfa.edu.au
SEQUENCE:7
SUMMARY:Metasurfaces for millimeter wave applications
URL;VALUE=URI:https://events.vtools.ieee.org/m/279361
X-ALT-DESC:Description: <br /><p>Metasurfaces are artificial composite mate
 rials with subwavelength inclusions which have been shown to enable very v
 ersatile manipulation of electromagnetic waves. Particularly at microwave 
 frequencies\, the concept is widely explored and the scope of previous met
 hods of wavefront manipulation such as frequency selective surfaces and le
 aky-wave antennas has been largely extended. Emerging applications like ne
 xt generation wireless communication and radar sensing could benefit from 
 novel metasurface-based antennas which have been recently proposed.<br />&
 nbsp\; &nbsp\; &nbsp\; Although most of these emerging applications use fr
 equencies of operation in the millimeter wave (mm-wave) band\, research on
  metasurfaces in this band is still scarce. Many secondary effects known i
 n the microwave community such as fabrication constraints and material los
 ses are more severe using mm-waves and they significantly hamper the devel
 opment of efficient devices. The aim of this thesis is to investigate meta
 surface architectures suited for mm-wave frequencies and to explore promis
 ing related antenna concepts. Causes for significant performance degradati
 on in printed circuit metasurfaces for mm-waves are identified and synthes
 is techniques with which they can be minimized are proposed. The effective
 ness of the proposed synthesis framework is verified by comprehensive expe
 rimental works. Building on this synthesis approach\, two kinds of antenna
  systems are experimentally demonstrated\, based on transmissive metasurfa
 ces and on leaky-wave antennas.</p>
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