Page 150 - Antennas for Base Stations in Wireless Communications
P. 150
Antennas for Mobile Communications: CDMA, GSM, and WCDMA 123
Upper patch
Upper probe
Feeding line
PCB subsrate
Lower patch
Coaxial cable
Lower probe
(a)
56
126 Y
X (φ = 0°)
Z
28
16 9
25.0
35.5
51.2
330
(b)
2.87
3 2.87 4.66
21.9 21.9
2.16 10.23
2.16 0.552
30 2.63
(c)
unit: mm
Figure 3.21 Geometry of the single-feed dual-band patch antenna (a) 3D view, (b) top view
and side view, and (c) cascaded CMRC 10
a stacked configuration. To a certain extent, the larger patch func-
tions as the ground plane for the smaller patch. The upper patch is
made of copper whereas the lower patch is etched on the lower side of
