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A Broadband Planar Modified Quasi-Yagi Using Log-Periodic Antenna

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Figure

Figure 1 shows a 2-element LPDA antenna designed on a low cost glass epoxy FR4 substrate withdielectric constant (εr) = 4.4, thickness (h) = 1.6 mm, and loss tangent (tan δ) = 0.02
Table 1. Dimensions of modified quasi-Yagi using 2-elements log-periodic antenna.
Figure 4 shows photographs of the front and back sides of the fabricated modified quasi-Yagi antennausing a 2-element LPDA as a driven element on a low-cost FR4 substrate
Figure 5. Simulated and measured (a) VSWR, (b) gain and (c) F/B versus frequency plots of modifiedquasi-Yagi antenna using 2-elements LPDA along with simulated results of 2-elements LPDA and 3-elements Yagi-Uda antenna.
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