LC-CRLH传输线 均性条件：A< 4 LR CL 2 CR LL E=Np YR YL Yi Y.Ze △中 e f(GHz2)107 10(GHz) 9 9 aLC..' BLc 8 8- 7 6- 6 5 5 C 2 LC -3 2 3 p Bp
LC-CRLH传输线 4 均匀性条件：
12 10 . 1. E<0,u>0: ￡>0，u>0: n=eπ∈I,n<0 n=+√u∈R,n>0 plasmas @pe) isotropic dielectrics 8 metals at optical frequencies right-handed(RH)/ evanescent wave forward-wave propagation 6 ∩∩∩→r Artificial MNG TL Artificial ENG TL CRLH Ⅲ. IV. e<0,4<0: e>0.u<0: n=-√e∈R,n<0 n=√Eu∈L,n<0 Veselago's materials ferrites (@@pm) left-handed(LH)/ (ferrimagnetic materials) 20 4060 80100120140160180 backward-wave propagation evanescent wave Bd (deg) LR =1nH CRLH(double-negative) ENG(epsilon-negative) L =InH MNG(mu-negtive) CR=1pF CL=2pF
1 1 1 2 R L R L L nH L nH C pF C pF CRLH (double-negative) ENG (epsilon-negative) MNG (mu-negtive)
Metamaterial-Based Antenna Zeroth-order resonant (ZOR)antennas Resonator-type antenna- Multiband antennas Miniaturized antennas NFRP(near-field resonant parasitic)Antennas Metamaterial-loaded antennas Partially filled with metamaterial Antennas Leaky-wave antennas
Metamaterial-Based Antenna Resonator-type antenna Zeroth-order resonant (ZOR) antennas Multiband antennas Miniaturized antennas Leaky-wave antennas Metamaterial-loaded antennas NFRP(near-field resonant parasitic) Antennas Partially filled with metamaterial Antennas
Zero-order antenna Physical length 2x-()( =mx, m=0,土1，土2，..土00. Electrical length 0 ω(B) 0+3- 0+2 voltage m=1 m=0 0+1 m=土1 m=士2 0m=0 m=-1 m=土3 0-1 0-2 0-3 -3-2-0 +2+2Ξ+3受 0m=m元 (a) (b)
m=1 m=0 m=-1 Physical length Electrical length Zero-order antenna
[dB] 90 点 135 20 -30 40-180 Experimental (Copolar) Simulation (Copolar) (a) (b) Experimental (Crosspolar) Simulation (Crosspolar) Meander-Line Interdigital Capacitor Inductor 502 RH -3 -10 n=0 -2 -1 LH Unit Cell Virtual Ground 20% 4 68 10 12 Capacitor frequency (GHz) 75%reduction Sanada,K.Murakami,I.Awai,H.Kubo,C.Caloz,and T.Itoh,A planar zeroth-order resonator antenna using a left-handed transmission line in Proc.34th Eur.Microw.Conf.,Amsterdam,The Netherlands,Oct.2004,pp.1341- 1344
Sanada, K. Murakami, I. Awai, H. Kubo,C. Caloz, and T. Itoh, A planar zeroth-order resonator antenna using a left-handed transmission line in Proc. 34th Eur. Microw. Conf., Amsterdam, The Netherlands, Oct. 2004, pp. 1341– 1344 75% reduction