Page 140 - Antennas for Base Stations in Wireless Communications

Antennas for Mobile Communications: CDMA, GSM, and WCDMA 113

90
0
120 60
−5
−10
−15
150 −20 30
−25
−30
−35
180 −40 0
0 −5 −10 −15 −20 −25 −30 −35 −40 −35 −30 −25 −20 −15 −10 −5 0
−35
−30
−25
210 −20 330
−15
−10
−5
240 300 Horizontal plane co-pol
0 Vertical plane co-pol
270
(c)
Figure 3.11 Measured radiation patterns of the 90° linearly polarized antenna array
8
without slotted sidewalls at (a) 0.824 GHz, (b) 0.892 GHz, and (c) 0.96 GHz (© 2005 IEEE)
(Continued)

Wall a

y Sidewall
x Wall b Wall c
(a)

z
x

(b)
Dimensions: M = 752, N = 244, W1 = 126, W2 = 62, W3 = 50.5, l1 = 38, l2 = 15,
l3 = 29, l4 = 31, S1 = 310, S2 = 155, d = 2, D = 4.6, T = 2, t1 = 2, t2 = 1, h1 = 27.5,
h2 = 10.5, h3 = 11, H1 = 38, H2 = 14, H3 = 14, L = 35, sw1 = 130, sd1 = 114,
sh1 = 34, sw2 = 80, sd2 = 74, sh2 = 15, sw3 = 116, sd3 = 38, sh3 = 29 (mm)
Figure 3.12 Geometry of the dual-band dual-polarized patch antenna array:
9
(a) top view and (b) side view (© 2005 IEEE)