NJG1150UA2 Application Note for LTE Band-13 2fo Improvement(英語)

NJG1150UA2
APPLICATION NOTE FOR LTE BAND-13 2fo IMPROVEMENT
This application note shows an example in order to improve LTE band-13 2fo. The example of electrical
characteristics are shown as follows:
I ELECTRICAL CHARACTERISTICS (DC)
General conditions: Ta=+25°C
PARAMETER
MEASURED DATA
UNITS
VDD
2.8
V
Control Voltage (High)
VCTL(H)
1.8
V
Control Voltage (Low)
VCTL(L)
0
V
6.05
mA
0.1
µA
6.8
µA
Supply Voltage
SYMBOL
Supply Current1
IDD1
Supply Current2
IDD2
Control Current
ICTL
CONDITIONS
Active mode,
VDD=2.8V, VCTL=1.8V
Stand-by mode,
VDD=2.8V, VCTL=0V
VCTL=1.8V
I ELECTRICAL CHARACTERISTICS (RF)
General conditions: VDD=2.8V, VCTL=1.8V, fRF=1575MHz, Ta=+25°C, Zs=Zl=50ohm, with application circuit
MEASURED DATA
PARAMETER
Small Signal Gain
Noise Figure
Input Power at 1dB Gain
Compression Point
Input 3rd Order
Intercept Point
Out of Band Input 3rd
Order Intercept Point
700MHz Harmonic
SYMBOL
Gain
NF
Exclude PCB and connector
Losses (0.17dB)
Exclude PCB and connector
Losses (0.08dB)
P-1dB(IN)
IIP3
IIP3_OB
2fo
UNITS
CONDITIONS
f1=fRF, f2=f1+/- 1MHz,
Pin=-30dBm
f1 =1712.7MHz Pin =-20dBm,
f2 =1850MHz Pin =-65dBm
Input jammer tone:
787.76MHz at –25dBm
Measure the harmonic tone
at 1575.52MHz
Application
Circuit 1
Application
Circuit 2
15.6
15.5
dB
0.62
0.93
dB
-6.7
-7.7
dBm
+4.2
+3.3
dBm
+8.7
+9.3
dBm
-84.1
-139.1
dBm
RF IN VSWR
VSWRi
2.32
1.85
-
RF OUT VSWR
VSWRo
1.41
1.62
-
-1-
NJG1150UA2
Application Circuit 1
I BLOCK DIAGRAM
(Top View)
GND
VCTL
5
VDD
4
6
L1
15nH
VCTL
VDD
RFIN
RFOUT
3
1
RF IN
C1
1000pF
RF OUT
2
L2
39nH
GND
C2
0.9pF
I EVALUATION BOARD
(Top View)
Parts list
Parts ID
L1, L2
VCTL
VDD
C1, C2
Manufacture
LQW15A Series
(MURATA)
GRM03 Series
(MURATA)
C1
RF IN
L1
RF OUT
L2
C2
PCB (FR-4):
t=0.2mm
MICROSTRIP LINE WIDTH
=0.4mm (Z0=50Ω)
PCB SIZE
=14.0mm x 14.0mm
-2-
NJG1150UA2
Application Circuit 1
I ELECTRICAL CHARACTERISTICS
Conditions: VDD=2.8V, VCTL=1.8V, Ta=25°C, Zs=Zl=50ohm, with application circuit
S11, S22
S21, S12
VSWRi, VSWo
Zin, Zout
S11, S22 (f=50M~20GHz)
S21, S12 (f=50M~20GHz)
-3-
NJG1150UA2
Application Circuit 2
I BLOCK DIAGRAM
(Top View)
GND
VCTL
VDD
5
4
6
C2
0.8pF
VCTL
VDD
RFIN
RFOUT
3
1
RF IN
C1
1000pF
RF OUT
2
L1
10nH
GND
C3
4pF
I EVALUATION BOARD
(Top View)
Parts list
Parts ID
L1
VCTL
VDD
C1~C3
Manufacture
LQW15A Series
(MURATA)
GRM03 Series
(MURATA)
C1
RF IN
C2
RF OUT
L1
C3
PCB (FR-4):
t=0.2mm
MICROSTRIP LINE WIDTH
=0.4mm (Z0=50Ω)
PCB SIZE
=14.0mm x 14.0mm
-4-
NJG1150UA2
Application Circuit 2
I ELECTRICAL CHARACTERISTICS
Conditions: VDD=2.8V, VCTL=1.8V, Ta=25°C, Zs=Zl=50ohm, with application circuit
scale/div 10dB
S11, S22
S21, S12
VSWRi, VSWo
Zin, Zout
S11, S22 (f=50M~20GHz)
S21, S12 (f=50M~20GHz)
-5-
NJG1150UA2
I ELECTRICAL CHARACTERISTICS
Conditions: VDD=2.8V, VCTL=1.8V, Ta=25°C, Zs=Zl=50ohm, with application circuit
2fo vs. Pjam
(fjam=787.76MHz, fmeas=1575.52MHz)
20
NJRC standard circuit
0
Application circuit 1
Application circuit 2
2fo (dBm)
-20
-40
-60
-80
-100
-120
-140
-40
-30
-20
-10
0
10
Pjam (dBm)
MEASUREMENT BLOCK DIAGRAM
Agilent
E4440A
Agilent
E4425B
BPF
Signal
Generator
ATT
6dB
fin=787.76MHz
Pin=-25dBm
BPF
ATT
8dB
Spectrum
Analyzer
fmeas=1575.52MHz
f0=787.76MHz
-6-
NJG1150UA2
f0=1575.52MHz