Redpine Signals Inc. Proprietary and Confidential
Page 14
R
R
S
S
9
9
1
1
1
1
0
0
-
-
N
N
-
-
1
1
1
1
-
-
0
0
2
2
M
M
o
o
d
d
u
u
l
l
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I
I
n
n
t
t
e
e
g
g
r
r
a
a
t
t
i
i
o
o
n
n
G
G
u
u
i
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d
d
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V
V
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e
r
r
s
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1
1
.
.
3
3
9
9
Electrical performance of any Chip antenna is influenced by the physical characteristics of the surrounding ground plane, feed
line, other devices, and materials. This can be used as an advantage by manipulating certain parameters to affect resonant
frequency and match:
1.
Ground plane configuration
2.
Distance from antenna
3.
Topology around antenna
4.
Feed point transmission line impedance
5.
Trace width
6.
Trace length
7.
Matching Network
8.
PCB substrate thickness
9.
PCB substrate dielectric constant.
5.1
Antenna Matching Network
Provision should be given for a pie network as shown in the schematics. The values shown below are just for example. The
values of the pie network components depends on the Antenna part, Customers layout, Gnd plane in the layout & other
components in the system which could affect the radiation pattern of the Antenna. Please use a Network Analyzer to
optimize the values of the match network for the best return loss.
