Low-Noise Front-End Module for Global Navigation

B G M10 43 N7
Low -N ois e Fr ont -E nd Mo dule for G loba l
Na vig atio n S atelli te S ys te m s (G N SS )
Applic atio n Usi ng 0 201 Co m p onents
Applic atio n N ote A N 286
Revision: Rev. 1.0
2012-06-27
RF and P r otecti on D evic es
Edition 2012-06-27
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2012 Infineon Technologies AG
All Rights Reserved.
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BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
Application Note AN286
Revision History: 2012-06-27
Previous Revision: None
Page
Subjects (major changes since last revision)
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of WIND RIVER SYSTEMS, INC. ZETEX™ of Diodes Zetex Limited.
Last Trademarks Update 2011-11-11
Application Note AN286, Rev. 1.0
3 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
List of Content, Figures and Tables
Table of Content
1
BGM1043N7 GPS and GLONASS Front-End Module ..................................................................... 5
2
Introduction ........................................................................................................................................ 6
3
Description .......................................................................................................................................... 8
4
Application Circuit and Block Diagram ........................................................................................... 9
5
Measurement Results ...................................................................................................................... 10
6
Measured Graphs for GPS and GLONASS Bands ........................................................................ 12
7
Miscellaneous Measured Graphs ................................................................................................... 18
8
Evaluation Board and Layout Information .................................................................................... 21
9
Authors .............................................................................................................................................. 22
List of Figures
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Figure 17
Figure 18
Figure 19
Figure 20
Figure 21
Figure 22
Figure 23
Figure 24
BGM1043N7 in TSNP-7-10 Package................................................................................................... 5
RF System Overview: Mobile Phone ................................................................................................... 6
GNSS system with integrated GNSS FEM BGM1043N7 for mobile/portable and personal navigation
devices ................................................................................................................................................. 7
Block Diagram of BGM1043N7 ............................................................................................................ 8
Schematic diagram of the BGM1043N7 application circuit .................................................................. 9
Wideband Insertion Power Gain of BGM1043N7 .............................................................................. 12
Narrowband Insertion Power Gain of BGM1043N7 for GPS and GLONASS bands ......................... 12
Input Matching of BGM1043N7 for GPS and GLONASS bands ....................................................... 13
Output Matching of BGM1043N7 for GPS and GLONASS bands ..................................................... 13
Reverse Isolation of BGM1043N7 for GPS and GLONASS bands ................................................... 14
Noise Figure of BGM1043N7 for GPS and GLONASS bands ........................................................... 14
Input 1dB Compression Point of BGM1043N7 at supply voltage of 1.8V for GPS and GLONASS
bands .................................................................................................................................................. 15
Input 1dB Compression Point of BGM1043N7 at supply voltage of 2.8V for GPS and GLONASS
bands .................................................................................................................................................. 15
Carrier and intermodulation products of BGM1043N7 for GPS band at Vcc=1.8V ........................... 16
Carrier and intermodulation products of BGM1043N7 for GPS band at Vcc=2.8V ........................... 16
Carrier and intermodulation products of BGM1043N7 for GLONASS band at Vcc=1.8V ................. 17
Carrier and intermodulation products of BGM1043N7 for GLONASS band at Vcc=2.8V ................. 17
Input and Output Matching of BGM1043N7 for GPS and GLONASS bands with Vcc=1.8V ............ 18
Input and Output Matching of BGM1043N7 for GPS and GLONASS bands with Vcc=2.8V ............ 18
Stability Factor K of BGM1043N7 upto 10 GHz ................................................................................. 19
Stability Factor µ1 of BGM1043N7 upto 10 GHz ............................................................................... 19
Stability Factor µ2 of BGM1043N7 upto 10 GHz ............................................................................... 20
Picture of Evaluation Board BGM1043N7 V3.0 ................................................................................. 21
PCB Layer Information ....................................................................................................................... 21
List of Tables
Table 1
Table 2
Table 3
Table 4
Pin Assignment of BGM1043N7 .......................................................................................................... 9
Bill-of-Materials..................................................................................................................................... 9
Electrical Characteristics (at room temperature), Vcc = Vpon = 1.8 V .............................................. 10
Electrical Characteristics (at room temperature), Vcc = Vpon = 2.8 V .............................................. 11
Application Note AN286, Rev. 1.0
4 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
BGM1043N7 GPS and GLONASS Front-End Module
1
BGM1043N7 GPS and GLONASS Front-End Module
1.1
Features












1.2
Operating frequency: 1575.42 MHz and 1598.061605.38 MHz
High Gain: 15.1 dB
Low Noise Figure (GPS): 1.5 dB
Low current consumption: 4.0 mA
Out-of-band rejection in cellular bands: > 43 dBc
Input compression point in cellular bands: 30 dBm
Supply voltage: 1.5 V to 3.6 V
3
Tiny TSNP-7-10 leadless package (2.3 x 1.7 x 0.73 mm )
RF output internally matched to 50 Ω
IEC ESD contact discharge of RF input pin: 6 kV
Only 3 external SMD parts
RoHS compliant package (Pb-free)
Figure 1
BGM1043N7 in TSNP-7-10
Package
Applications
- GPS (Global Positioning System) working in the L1 band at 1575.42 MHz
- GLONASS (Globalnaya Navigatsionnaya Sputnikovaya Sistema) working in the L1 band from 1598.06 MHz to
1605.38 MHz
Application Note AN286, Rev. 1.0
5 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
Introduction
2
Introduction
Global Navigation Satellite System or GNSS receiver, as we know, works on the reception of location based
information from satellite signals. There are several standards worldwide like GPS, GLONASS, Galileo and
COMPASS Bei Du. However, the power levels of the satellite signals received, can be lower than -130 dBm.
This poses a challenge on the sensitivity of the GNSS receiver. Along with this, the ever growing disturbing or
jamming signals in the adjacent cellular bands makes the design of the receiver front-end even more difficult.
The rapidly growing market for GNSS systems is driving the design of advanced and high-performance GNSS
receivers. A simple overview of the GNSS RF system in a mobile phone or other handheld devices is shown in
Figure 2.
Mobile Phone / Handheld device
Satellite GNSS
signal
Tranceiver module
GSM800/GSM900/
DCS/PCS1800/
UMTS/
WLAN
GNSS
Receiver IC
Figure 2
Int.
LNA
Tx Signal
GNSS Signal < -130dBm
GNSS RF
Front-end
module
ESD
protection
Blocking Signal
RF System Overview: Mobile Phone
GNSS receivers for mobile or handheld applications are always under the threat of high power cellular signals.
Due to the coexistence of GNSS and Cellular services, there is a strong coupling of the DCS/PCS and Cellular
signals to the GNSS receiver. The performance of a standard integrated GNSS receiver chip cannot meet the
specifications required for the present systems. An external RF front-end is essential to achieve this required
performance. The most important prerequisites for the front-end of a GNSS receiver are low noise figure and
sufficient amplification of the desired signal together with high attenuation of the jamming signals.
Application Note AN286, Rev. 1.0
6 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
2.1
Systems overview of a GNSS receiver
Several configurations can be adopted for a GNSS receiver chain. In all configurations, as mentioned earlier, a
RF front-end like BGM1043N7 is placed between the antenna and the GNSS receiver chip. Mobile/portable
devices as well as personal navigation devices request decreasing form factor used by the implementation of
the GNSS function in the devices. BGM1043N7 supports the designers to minimize the area in the front-end.
Such a configuration is shown in Figure 3. The BGM1043N7 can also be used for the active antenna module.
Embedded ANT
BGM1043N7
LNA
BPF
GNSS
Receiver
IC
Figure 3
GNSS system with integrated GNSS FEM BGM1043N7 for mobile/portable and personal
navigation devices
Application Note AN286, Rev. 1.0
7 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
Description
3
Description
The BGM1043N7 is a combination of a low-insertion-loss pre-filter with Infineon’s high performance low noise
amplifier (LNA) for Global Positioning System (GPS) and Globalnaya Navigatsionnaya Sputnikovaya Sistema
(GLONASS) applications. Both, GPS and GLONASS frequency bands, can be used at the same time. Through
the low insertion loss of the filter, the BGM1043N7 provides 15.1 dB gain, 1.5 dB noise figure and high linearity
performance. In addition BGM1043N7 provides very high out-of-band attenuation in conjunction with a high
input compression point. It can withstand IEC61000-4-2 ESD contact discharge at the RF input as high as 6 kV
in the application circuit shown in Figure 5. Its current consumption is as low as 4.0 mA. It operates over the 1.5
V to 3.6 V supply voltage range.
Figure 4
Block Diagram of BGM1043N7
Application Note AN286, Rev. 1.0
8 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
Application Circuit and Block Diagram
4
Application Circuit and Block Diagram
The BGM1043N7 is internally matched at the output to 50 Ohm. The LNA bias circuitry is also integrated on
chip. Therefore, only three external components are required in the application. The application schematic is
shown in Figure 5 and the function of the external passives is listed in Table 2.
4.1
Application Schematic
L1
9.1nH
BGM1043N7
(Topview)
L2
7.5nH
SO
4
RFIN
3
5
7 GND
2
PON
AI
6
RFOUT
1
VCC
C1
1µF
Figure 5
Table 1
Schematic diagram of the BGM1043N7 application circuit
Pin Assignment of BGM1043N7
Pin No.
Symbol
Function
1
VCC
Power Supply
2
PON
Power ON/OFF
3
RFIN
RF Input
4
SO
Pre-Filter Output
5
AI
LNA Input
6
RFOUT
RF Output
7
GND
DC and RF ground
Table 2
Bill-of-Materials
Symbol
Value
Unit
Size
C1
L1
1.0
µF
0201
Various
Supply filtering
9.1
nH
0201
Murata LQP Series
Matching/ESD protection Inductor
L2
7.5
nH
0201
Murata LQP Series
Matching Inductor
Q1
BGM1043N7
TSNP-7-10
Infineon
GPS/GLONASS FEM
Application Note AN286, Rev. 1.0
Manufacturer
9 / 23
Comment
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
Measurement Results
5
Measurement Results
Measurement results of the BGM1043N7 are presented in this section. The measurements are performed on
the Infineon application board at room temperature. The performances of the BGM1043N7 are here provided for
the voltage of 1.8V (Table 3) and 2.8V (Table 4). The data exclude PCB and SMA connector losses, unless
otherwise mentioned.
Table 3
Electrical Characteristics (at room temperature), Vcc = Vpon = 1.8 V
Parameter
Symbol
Value
Unit
Comment/Test Condition
DC Voltage
Vcc
1.8
V
DC Current
Icc
3.9
mA
Navigation System
Sys
GPS
GLONASS
Frequency Range
Freq
1575.42
1598-1606
MHz
Gain
G
14.7
14.1
dB
Noise Figure
NF
1.64
1.96
dB
RLin
14.2
15.6
dB
RLout
26.8
27.2
dB
IRev
21.6
22.2
dB
Input P1dB
IP1dB
-8.9
-7.7
dBm
Output P1dB
OP1dB
4.8
5.4
dBm
Input IP3
In-band
IIP3
-6.82
-5.59
dBm
Output IP3
In-band
OIP3
7.88
8.51
f1gps = 1575 MHz, f2gps = 1576MHz
dBm f1GLONASS =1602 MHz, f2GLONASS =1603 MHz
P1IN = P2IN = -30 dBm
Input Return Loss
Output Return Loss
Reverse Isolation
PCB and SMA connectors of 0.12 dB
losses substracted
fgps = 1575.42 MHz
f GLONASS = 1605 MHz
Rejection 750MHz1)
Rej750M
52.0
dBc
f = 750 MHz
1)
Rej900M
49.4
dBc
f = 806 MHz - 928 MHz
Rejection 1800MHz1)
Rej1800M
43.0
dBc
f = 1710 MHz - 1980 MHz
1)
Rej2400M
47.2
dBc
f = 2400 MHz - 2500 MHz
Input P1dB
IP1dB900M
29.6
dBm f = 900 MHz
Input P1dB
IP1dB1710M
31.5
dBm f = 1710 MHz
H2
-32.8
dBm
IIP3OOB
63.3
f1 = 1712.7 MHz, f2 = 1850 MHz
dBm P1IN = +10 dBm, P2IN = +10 dBm;
fIIP3 = 1575.4 MHz
k
>1
Rejection 900MHz
Rejection 2400MHz
LTE band-13 2
Harmonic
Input IP3
out-of-band
Stability
1)
nd
--
fIN = 787.76 MHz, PIN = +15 dBm;
fH2 = 1575.52 MHz
Unconditionnally Stable from 0 to 10GHz
Rejection is defined as following: [Gain at 1575.42 MHz] – [Attenuation@stopband frequency]
Application Note AN286, Rev. 1.0
10 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
Measurement Results
Table 4
Electrical Characteristics (at room temperature), Vcc = Vpon = 2.8 V
Parameter
Symbol
Value
Unit
Comment/Test Condition
DC Voltage
Vcc
2.8
V
DC Current
Icc
4.1
mA
Navigation System
Sys
GPS
GLONASS
Frequency Range
Freq
1575.42
1598-1606
MHz
Gain
G
14.8
14.3
dB
Noise Figure
NF
1.62
1.96
dB
RLin
14.8
16.3
dB
RLout
22.8
30.7
dB
IRev
22.0
22.5
dB
Input P1dB
IP1dB
-7.2
-5.1
dBm
Output P1dB
OP1dB
6.6
8.2
dBm
IIP3
-6.77
-5.61
dBm
8.69
f1gps = 1575 MHz, f2gps = 1576MHz
dBm f1GLONASS =1602 MHz, f2GLONASS =1603 MHz
Input power= -30 dBm
Input Return Loss
Output Return Loss
Reverse Isolation
Input IP3
In-band
Output IP3
In-band
OIP3
Rejection 750MHz1)
Rejection 900MHz
1)
LTE band-13 2
Harmonic
Input IP3
out-of-band
Stability
1)
Rej750M
52.0
dBc
f = 750 MHz
Rej900M
49.4
dBc
f = 806 MHz - 928 MHz
Rej1800M
43.0
dBc
f = 1710 MHz - 1980 MHz
1)
Rej2400M
47.2
dBc
f = 2400 MHz - 2500 MHz
IP1dB900M
31.1
dBm f = 900 MHz
IP1dB1710M
33.2
dBm f = 1710 MHz
H2
-32.9
dBm
IIP3OOB
63.4
f1 = 1712.7 MHz, f2 = 1850 MHz
dBm P1IN = +10 dBm, P2IN = +10 dBm;
fIIP3 = 1575.4 MHz
k
>1
Rejection 2400MHz
Input P1dB
fgps = 1575.42 MHz
f GLONASS = 1605 MHz
1)
Rejection 1800MHz
Input P1dB
8.03
PCB and SMA connectors of 0.12 dB
losses substracted
nd
--
fIN = 787.76 MHz, PIN = +15 dBm;
fH2 = 1575.52 MHz
Unconditionnally Stable from 0 to 10GHz
Rejection is defined as following: [Gain at 1575.42 MHz] – [Attenuation@stopband frequency]
Application Note AN286, Rev. 1.0
11 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
Measured Graphs for GPS and GLONASS Bands
6
Measured Graphs for GPS and GLONASS Bands
Gain
20
1575.4 MHz
14.8 dB
10
Gain at Vcc=1.8V
Gain at Vcc=2.8V
S21 (dB)
0
-10
-20
-30
-40
787 MHz
-37.4 dB
-50
-60
0
Figure 6
500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000
Frequency (MHz)
Wideband Insertion Power Gain of BGM1043N7
Narrowband gain
16
Gain at Vcc=1.8V
Gain at Vcc=2.8V
15.4
S21 (dB)
1575.4 MHz
14.8 dB
14.8
1605.4 MHz
14.3 dB
1575.4 MHz
14.7 dB
14.2
1605.4 MHz
14.1 dB
13.6
13
1500
Figure 7
1525
1550
1575
1600
Frequency (MHz)
1625
1650
Narrowband Insertion Power Gain of BGM1043N7 for GPS and GLONASS bands
Application Note AN286, Rev. 1.0
12 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
Measured Graphs for GPS and GLONASS Bands
Input matching
0
S11 at Vcc=1.8V
S11 at Vcc=2.8V
-5
S11 (dB)
1575.4 MHz
-14.2 dB
-15
-20
-25
1500
Figure 8
1605.4 MHz
-15.6 dB
-10
1605.4 MHz
-16.3 dB
1575.4 MHz
-14.8 dB
1525
1550
1575
1600
Frequency (MHz)
1625
1650
Input Matching of BGM1043N7 for GPS and GLONASS bands
Output matching
0
S22 at Vcc=1.8V
S22 at Vcc=2.8V
-5
S22 (dB)
-10
-15
1575.4 MHz
-22.8 dB
1605.4 MHz
-27.2 dB
-20
-25
-30
1575.4 MHz
-26.8 dB
-35
-40
1500
Figure 9
1525
1550
1575
1600
Frequency (MHz)
1605.4 MHz
-30.7 dB
1625
1650
Output Matching of BGM1043N7 for GPS and GLONASS bands
Application Note AN286, Rev. 1.0
13 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
Measured Graphs for GPS and GLONASS Bands
Isolation
-17
S12 at Vcc=1.8V
S12 at Vcc=2.8V
S12 (dB)
-19
1575.4 MHz
-21.6 dB
-21
-23
1575.4 MHz
-22 dB
1605.4 MHz
-22.2 dB
1605.4 MHz
-22.5 dB
-25
-27
1500
Figure 10
1525
1550
1575
1600
Frequency (MHz)
1625
1650
Reverse Isolation of BGM1043N7 for GPS and GLONASS bands
Noise figure
3
NF at Vcc=1.8V
2.8
NF at Vcc=2.8V
2.6
NF (dB)
2.4
1605.4 MHz
1.96
2.2
2
1575.4 MHz
1.64
1.8
1605.4 MHz
1.96
1.6
1575.4 MHz
1.62
1.4
1.2
1
1559
Figure 11
1567
1575
1583
1591
Frequency (MHz)
1599
1607
1615
Noise Figure of BGM1043N7 for GPS and GLONASS bands
Application Note AN286, Rev. 1.0
14 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
Measured Graphs for GPS and GLONASS Bands
Compression point at 1dB with Vcc=1.8V
16
P1dB at Vcc=1.8V GPS (1575.42MHz)
-30 dBm
14.8 dB
15
P1dB at Vcc=1.8V GLONASS (1605MHz)
-8.89 dBm
13.8 dB
Gain (dB)
14
-30 dBm
14.2 dB
13
-7.68 dBm
13.2 dB
12
11
10
-30
Figure 12
-25
-20
-15
Power (dBm)
-10
-5
0
Input 1dB Compression Point of BGM1043N7 at supply voltage of 1.8V for GPS and
GLONASS bands
Compression point at 1dB with Vcc=2.8V
16
P1dB at Vcc=2.8V GPS (1575.42MHz)
-30 dBm
14.9 dB
P1dB at Vcc=2.8V GLONASS (1605MHz)
15
-7.15 dBm
13.9 dB
-30 dBm
14.3 dB
Gain (dB)
14
13
-5.08 dBm
13.3 dB
12
11
10
-30
Figure 13
-25
-20
-15
Power (dBm)
-10
-5
0
Input 1dB Compression Point of BGM1043N7 at supply voltage of 2.8V for GPS and
GLONASS bands
Application Note AN286, Rev. 1.0
15 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
Measured Graphs for GPS and GLONASS Bands
Intermodulation for GPS band
0
1575 MHz
-15.18
-10
1576 MHz
-15.22
-20
Power (dBm)
-30
-40
-50
1577 MHz
-61.38
1574 MHz
-62.3
-60
-70
-80
-90
-100
1573
Figure 14
1574
1575
1576
Frequency (MHz)
1577
1578
Carrier and intermodulation products of BGM1043N7 for GPS band at Vcc=1.8V
Intermodulation for GPS band
0
1575 MHz
-15.11
-10
1576 MHz
-15.14
-20
Power (dBm)
-30
-40
-50
1577 MHz
-61.44
1574 MHz
-62.27
-60
-70
-80
-90
-100
1573
Figure 15
1574
1575
1576
Frequency (MHz)
1577
1578
Carrier and intermodulation products of BGM1043N7 for GPS band at Vcc=2.8V
Application Note AN286, Rev. 1.0
16 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
Measured Graphs for GPS and GLONASS Bands
Intermodulation for GLONASS band
0
1603 MHz
-15.9
1602 MHz
-15.86
-10
-20
Power (dBm)
-30
-40
-50
1604 MHz
-64.68
1601 MHz
-65.44
-60
-70
-80
-90
-100
1600
Figure 16
1601
1602
1603
Frequency (MHz)
1604
1605
Carrier and intermodulation products of BGM1043N7 for GLONASS band at Vcc=1.8V
Intermodulation for GLONASS band
0
1602 MHz
-15.77
-10
1603 MHz
-15.8
-20
Power (dBm)
-30
-40
-50
1604 MHz
-64.74
1601 MHz
-65.39
-60
-70
-80
-90
-100
1600
Figure 17
1601
1602
1603
Frequency (MHz)
1604
1605
Carrier and intermodulation products of BGM1043N7 for GLONASS band at Vcc=2.8V
Application Note AN286, Rev. 1.0
17 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
Miscellaneous Measured Graphs
7
Miscellaneous Measured Graphs
Swp Max
1615MHz
Output
2.
0
6
0.
0.8
1.0
Input and Output matching with Vcc=1.8V
Input
0.
4
0
3.
0
4.
5.0
Swp Min
1559MHz
-1.0
-0.8
-0
.6
.0
-2
.4
-0
Figure 18
10.0
5.0
4.0
1575.4 MHz
r 1.06
x -0.401
-3
.0
2
-0.
3.0
2.0
1.0
0.8
0.4
0.2
1605.4 MHz
r 0.964
x -6.05e-005
10.0
-4
.0
-5.
0
0
1605.4 MHz
r 1.26
x -0.258
-10.0
0.6
0.2
1575.4 MHz
r 0.936
x 0.0808
Input and Output Matching of BGM1043N7 for GPS and GLONASS bands with Vcc=1.8V
Swp Max
1615MHz
Output
2.
0
6
0.
0.8
1.0
Input and Output matching with Vcc=2.8V
Input
0.
4
0
3.
0
4.
5.0
10.0
.0
-2
-1.0
-0.8
-0
.6
.4
-0
Figure 19
5.0
4.0
3.0
2.0
1.0
0.6
0.4
0.8
1575.4 MHz
r 1.09
x -0.379
-3
.0
2
-0.
10.0
-10.0
0
0.2
1605.4 MHz
r 0.95
x 0.0445
1605.4 MHz
r 1.26
x -0.223
-4
.0
-5.
0
0.2
1575.4 MHz
r 0.911
x 0.121
Swp Min
1559MHz
Input and Output Matching of BGM1043N7 for GPS and GLONASS bands with Vcc=2.8V
Application Note AN286, Rev. 1.0
18 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
Miscellaneous Measured Graphs
Stability K factor
5
Stability K factor at Vcc=1.8V
Stability K factor at Vcc=2.8V
4
3
2
1
1575.4 MHz
1.29
0
0
Figure 20
1000
2000
3000
4000 5000 6000
Frequency (MHz)
7000
8000
9000 10000
Stability Factor K of BGM1043N7 upto 10 GHz
Stability Mu1 factor
5
Stability Mu1 factor at Vcc=1.8V
Stability Mu1 factor at Vcc=2.8V
4
3
2
1575.4 MHz
1.88
1
0
0
Figure 21
1000
2000
3000
4000 5000 6000
Frequency (MHz)
7000
8000
9000 10000
Stability Factor µ1 of BGM1043N7 upto 10 GHz
Application Note AN286, Rev. 1.0
19 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
Miscellaneous Measured Graphs
Stability Mu2 factor
3
2
1575.4 MHz
1.58
1
Stability Mu2 factor at Vcc=1.8V
Stability Mu2 factor at Vcc=2.8V
0
0
Figure 22
1000
2000
3000
4000 5000 6000
Frequency (MHz)
7000
8000
9000 10000
Stability Factor µ2 of BGM1043N7 upto 10 GHz
Application Note AN286, Rev. 1.0
20 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
Evaluation Board and Layout Information
8
Evaluation Board and Layout Information
In this application note, the following PCB is used:
PCB Marking: BGM1043N7 V3.0 M120319
PCB material: FR4
Figure 23
Picture of Evaluation Board BGM1043N7 V3.0
Vias
FR4, 0.2mm
Copper
35µm
Figure 24
FR4, 0.8mm
PCB Layer Information
Application Note AN286, Rev. 1.0
21 / 23
2012-06-27
BGM1043N7
Low-Noise FEM for GPS and GLONASS Applications
Authors
9
Authors
Jagjit Singh Bal, Senior Application Engineer of Business Unit “RF and Protection Devices”
Dr. Chih-I Lin, Senior Staff Engineer of Business Unit “RF and Protection Devices”
Application Note AN286, Rev. 1.0
22 / 23
2012-06-27
w w w . i n f i n e o n . c o m
Published by Infineon Technologies AG
AN286