With these values the voltage reflection coefficient between the layers is 0.3 and the upper layer thickness was changed to 1 m.
The resistivities of both layers were exchanged allowing two sets of simulations for the voltage reflection coefficient K.
The travelling voltage reflection coefficient matrix, or simply the travelling reflection coefficient matrix (TRCM) [??] is defined from:
The modal travelling voltage reflection coefficient or simply the modal travelling reflection coefficient (MTRC) [[[??]mi].sub.[xi]'[xi]] from the [xi]-th mode to the [xi]'-th one is defined upon the medium discontinuity from:
Figure 3(a) shows a comparison between the measured and the computed input port voltage reflection coefficient
, [S.sub.11], while Figure 3(b) shows a comparison between the forward voltage gain coefficients, [S.sub.21]; both describe the unloaded cell and the resonances are evident.
Hence, with two single-stage modulators connected in tandem to realize the balanced modulator, the total voltage reflection coefficient
of the circuit is expressed as
To analyze the impedance matching of the OTL with the antenna, it is necessary to calculate the voltage reflection coefficient ([absolute value of [[GAMMA].sub.V]] = (VSWR - 1)/(VSWR + 1)) as previously done in [13, 14, 16], doing the approximate calculation of the voltage standing wave ratio (VSWR) near the electric nanodipole, VSWR = [I.sub.max]/[I.sub.min], [I.sub.max] is the maximum current magnitude, and [I.sub.min] is the minimum current magnitude.
Finally, a parametric analysis of the voltage reflection coefficient is shown in Figures 22 and 23.
Using (1), (2), and (5) yields the voltage reflection coefficient at the input port [[GAMMA].sub.IN] in the CCITL system in terms of associated impedances as
In addition, Figure 3 shows the Thevenin's equivalent circuit at the output port, where the output voltage reflection coefficient [[GAMMA].sub.out] in the CCITL system can be determined using a similar formulation to the input voltage reflection coefficient as
Figure 7 shows the currents for two cases with the same [a.sub.L] = 10 nm but different voltage reflection coefficient of [absolute value of [T.sub.V]] = 0.31 and 0.67 In these results we observe a higher stationary wave for the case [absolute value of [T.sub.V]] = 0.67 than for the case [absolute value of [T.sub.V]] = 0.31.
Voltage Reflection Coefficient. In this section we analyze the voltage reflection coefficient of the nano circuit in Figure 1 where we use the resonant receiving nanodipoles with dimensions given in Table 1.