Page 302 - System on Package_ Miniaturization of the Entire System

276 Cha pte r F i v e

0 0
5
10
10 20
S 11 [dB] 15 S 11 [dB] 30
20
25
40
Measured Measured
30
Simulated Simulated
35 50
12 12.5 13 13.5 14 14.5 15 15.5 16 33 33.5 34 34.5 35 35.5 36 36.5 37
Frequency [GHz] Frequency [GHz]
(a) (b)
FIGURE 5.14 Return loss plots of the antenna arrays developed on multilayer LCP technology:
(a) 14-GHz array and (b) 35-GHz array.

applications. Because of the magneto-dielectric properties, it is easier to match to such
an antenna.
Figure 5.16 shows an example of a meander line antenna fabricated on an NiZn
ferrite composite (magneto-dielectric) material for VHF (30 to 300 MHz) applications.
The properties of the magneto-dielectric layers are defined by their complex
permeability, complex permittivity, and frequency characteristics. Figure 5.17 shows

90
90 120 60
120 60
0
0 −5
−5 150 −10
150 −10 30 −15 30
−15 −20
−20 −25
−25 −30
−30 −35
−35 −40
180 −40 0 180 0

210 330 210 330

240 300 240 300
270 270

Co-Pol Measured Co-Pol Measured
Co-Pol Simulated Co-Pol Simulated
Cross-Pol Measured Cross-Pol Measured
Cross-Pol Simulated Cross-Pol Simulated
(a) (b)
FIGURE 5.15 Radiation pattern plots of the antenna arrays developed on multilayer LCP
technology: (a) 14-GHz array and (b) 35-GHz array.