User's Manual

H330 HSPA+
RF PCB
7.1.3 La
y
When desi
g
The shorte
r
It is recom
m
Add a π-ty
p
7.1.4 Im
p
All RF lines
7.2 Ant
e
7.2.1 Ma
1. Anten
n
Antenna ef
f
The radiate
d
losses: retu
dimensions
2. S11 or
S11 (return
impedance
Module Hard
w
Design
y
out Guid
e
g
n RF, we n
e
r
the bette
r
,
i
m
ended to
m
p
e circuit (t
w
p
edance
should be
5
e
nna De
s
in Antenn
n
a Efficien
c
f
iciency is th
d
power of
a
rn loss, ma
t
.
Efficienc
y
VSWR
loss) indica
(50 ohm).
S
w
are User M
a
e
line
e
ed connec
t
i
nsert loss
<
m
ount H330
w
o parallel d
e
5
0ohm imp
e
s
ign
a Design
c
y
e ratio of th
e
a
n antenna
t
erial loss, a
y
of the ma
s
tes the deg
r
S
11 shows t
h
a
nual
t
H330 mod
u
<
0.2dB，an
d
module an
d
e
vice groun
d
e
dance。
Require
m
e
input pow
e
is always lo
w
nd coupling
s
ter antenn
a
r
ee to whic
h
h
e resonanc
u
le RF pin t
o
d
impedanc
e
d
antenna c
o
d
pin directl
y
m
ent
e
r to the ra
d
w
er than th
e
loss. The
e
a
> 40% (–
4
h
the input i
m
e feature a
n
o
antenna,
w
e
is 50ohm.
。
o
nnector to
t
y
to the mai
d
iated or re
c
e
input pow
e
fficiency of
a
4
dB)
m
pedance o
f
n
d impedan
c
w
e recomm
e
。
t
he same si
d
n land) for
a
c
eived powe
er
due to th
e
a
n antenna
f
an antenn
a
c
e bandwidt
h
e
nded to us
e
d
e of layout
a
ntenna ma
t
r o
f
an ante
e
following
a
relates to it
s
a
matches t
h
h
of an ante
Page 41 of 4
4
e
micro-line
.
t
ching.
nna.
a
ntenna
s
electrical
h
e referenc
e
n
na. Voltag
e
4
e
e