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highly challenging. Alternatively, a micro-LWA achieved Rafa!-ancaa
with a single active element and micromachiried passive
aperture can enable nitraennic irnaeing in a ernaii Probe that lsongard, E,_Lissek H., and Mosig,1. R. (2010). Acoustic transmission line
. . . . _ rnetarnaterialwitli negative/zero/positiverefmctlve index. PhysimlReview
can acoustically scan and image the iriterlor walls of veins B18 ii943ii6_
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_ _ _ d l' ti t 1-D/2-D '1 ' t/l fl-l1 fl fl (CRLH) st -
Another example m which LWAs offer 21 seme-Chensmg §."re3§£2“i/Zlniare mniefeiliriiilieirrr 176, 274-276.
technological development is literally out of this world. It Caloz.C.,Itoli,T.,andRennings,A.(2lll)8).CRLlrlnietai-natei-ialleaky-waveand
is for use on future NASA missions to explore liquid worlds ‘e5°"e'“ e“‘e‘‘"“- "355 A"'e""'“ P"7P“§“‘i"" Mflghzihe 5°(5>»15'39-
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the moons of IIIl1iier- These moons are believed to Contain Esfalilani, H., Karkar, 5., and Lissek, H. (2015). Exploiting tlie leaky-wave
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. . . _ l|1i ., aoz. .,an o. . . oniinan moee -waveanenna
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. . . P = - gr 1
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Acknowledgments siragiisa, 11., Perret, 13., Lemaitre-Auger, P. Ngiiyn, H. V., Tedjini, 5., and
Portions of this research were carried out at the Jet Propulsion Cfilvzr C-_(l012)- tapered CR‘-H We‘ ‘“E5"*1/S“'h 1ef*kY'WeVe e'“e"_M
Laboratory, Caljfornialnstitute ofTechnology, underacontract 15::l°be levels‘ IEEE A"m'"'“ “"4 WWI” Pmp”g'm""
With ‘he Ne‘-iehel Aer°m‘“fiC5 and 5Peee Admi“i5m‘fi°h and zweig, (1., l.ipes, 11., and Pierce, 1. R. (1974). Tlie cochlear compromise. me
the support of the Oflice of Naval Research. Iuimiul u] the Acoustical Society ofAmerim 59, 975-982.
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