[仿真]Growing Evanescent Waves in Continuous

Abstract—We demonstrate the growth of evanescent waves in a vI2^tX9  
backward-wave medium which consists of a printed continuous fG}tMSI  
transmission-line (TL) grid without any embedded lumped elements ,8:(OB|a  
(chip or printed) or vias. This proposed medium is referred %<E$,w>
 
to as a backward-wave transmission-line (BWTL) grid. When XM1WfjE\  
such a BWTL medium is sandwiched between two complementary 2@9Tfm(=  
forward-wave transmission-line (FWTL) grids, growing 'SCidN(n  
evanescent waves are supported in the BWTL medium. Analysis ~KW,kyXBnD  
and microwave simulations verify the growth of evanescent 1y-y6q  
waves including in the realistic case of lossy TLs. The proposed *RXbc~ H  
BWTL medium is easy to construct and inherently scalable with L!rw[x  
frequency. PE~G=1x3  
Index Terms—Backward waves, evanescent wav .. 9{-EJ)  
vW
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