[仿真]Growing Evanescent Waves in Continuous

Abstract—We demonstrate the growth of evanescent waves in a ^{3,ok*Nf  
backward-wave medium which consists of a printed continuous U8+5{,$\.  
transmission-line (TL) grid without any embedded lumped elements gZI88Q  
(chip or printed) or vias. This proposed medium is referred &&/2oP+z  
to as a backward-wave transmission-line (BWTL) grid. When
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such a BWTL medium is sandwiched between two complementary [ &cCE   
forward-wave transmission-line (FWTL) grids, growing 5.KhI<[  
evanescent waves are supported in the BWTL medium. Analysis bG`aF*10)!  
and microwave simulations verify the growth of evanescent 8.S&J6  
waves including in the realistic case of lossy TLs. The proposed .Du-~N4\  
BWTL medium is easy to construct and inherently scalable with `*5_`^t   
frequency. 1'O++j_%y  
Index Terms—Backward waves, evanescent wav .. TC7Rw}jF  
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