TR127 - BGB707L7 FM LNA 50ohm Matched

Technical Report, 2009-Mar-31
Technical Report
___________________________________________________________
50Ω-Matched LNA using BGB707L7ESD for FM Application (80-110MHz)
Technical Report <TR127>
Device:
BGB707L7ESD
Application: 50Ω-Matched LNA for FM Application
(80-110MHz)
Revision:
Rev. 1.0
Date:
2009-Mar-31
RF and Protection Devices
Measurement Report
1/9
2009-03-31
Technical Report
___________________________________________________________
50Ω-Matched LNA using BGB707L7ESD for FM Application (80-110MHz)
Published by
Infineon Technologies AG
81726 München, Germany
© Infineon Technologies AG 12/18/09.
All Rights Reserved.
Legal Disclaimer
The information given in this document shall in no event be regarded as a guarantee
of conditions or characteristics (“Beschaffenheitsgarantie”). With respect to any
examples or hints given herein, any typical values stated herein and/or any
information regarding the application of the device, Infineon Technologies hereby
disclaims any and all warranties and liabilities of any kind, including without limitation
warranties of non-infringement of intellectual property rights of any third party.
Information
For further information on technology, delivery terms and conditions and prices
please contact your nearest Infineon Technologies Office (www.infineon.com).
Warnings
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Technical Report
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50Ω-Matched LNA using BGB707L7ESD for FM Application (80-110MHz)
1. Overview
Infineon Device: BGB707L7ESD
Application: 50 ohms matched LNA for FM 80-110MHz Applications
PCB Marking: BGB7-Family TSLP-7-1 V1.0
2. Summary of Measurement Results
Table 2-1: Summary of Measurement Results
Parameter
Symbol
Value
Unit
Note/Test Condition
Frequency Range
Freq
80-110
MHz
DC Voltage
Vcc
3.0
V
DC Current
Icc
6
mA
Gain
G
16.5
dB
Power @ port1= -30 dBm
Noise Figure
NF
1.5
dB
Including SMA connectors
and PCB losses of 0.1dB
Input Return Loss
RLin
10.1
dB
Output Return Loss
RLout
15.8
dB
Reverse Isolation
|IRev|
26.4
dB
Input P1dB
IP1dB
-12.2
dBm
Output P1dB
OP1dB
3.3
dBm
Input IP3
IIP3
0.7
dBm
Output IP3
OIP3
17.2
dBm
Stability
k
>1.2
--
Measurement Report
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Power @ port2 = -10 dBm
Power @ Input = -30 dBm
Measured @ f1=100MHz
∆f =1 MHz
Stability measured up to 10GHz
2009-03-31
Technical Report
___________________________________________________________
50Ω-Matched LNA using BGB707L7ESD for FM Application (80-110MHz)
3. Description:
This report presents the measurement results of the Low Noise Amplifier using the
SiGe:C LNA BGB707L7ESD from Infineon Technologies for the 80-110MHz FM
application with an input matched to 50 ohms. The LNA brings a gain of 16.5dB on
the frequency of 80-110MHz with a noise figure of 1.5 dB (including the SMA
connector and PCB losses of 0.1dB).
Furthermore, this device provides an unconditionally stability up to 10GHz. With a
current of 6mA, this circuit achieves an output P1dB of +3.3dBm and IP3 of +17.2
dBm(in-band).
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Technical Report
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50Ω-Matched LNA using BGB707L7ESD for FM Application (80-110MHz)
4. Schematics:
Figure 4-1: Schematic of the BGB707L7ESD for the FM 80-110MHz Applications.
Table 4-1: Bill of Materials
Symbol Value Unit Size
Manufacturer
Comment
C1
47
pF
0402 various
Input Matching/DC Block
C2
10
nF
0402 various
RF Bypass
C3
39
pF
0402 various
Negative Feedback
C4
10
nF
0402 various
RF Bypass
C5
330
pF
0402 various
Output Matching/DC Block
L1
150
nH
0402
R1
1.0
kΩ
0402 various
Negative Feedback
R2
3.9
kΩ
0402 various
DC current Regulation
R3
8.2
Ω
0402 various
Stabilisation/Output Matching
R4
110
Ω
0402 various
Collector current Regulation
TSLP
Infineon
7-1
SiGe MMIC LNA BGB707L7
with integrated ESD protection
Q1
Measurement Report
Murata
LQG15A
5/9
Input Matching/Biasing
2009-03-31
Technical Report
___________________________________________________________
50Ω-Matched LNA using BGB707L7ESD for FM Application (80-110MHz)
5. Measured Graphs
Transducer Power Gain
20
15
80 MHz
16.51 dB
10
100 MHz
16.59 dB
110 MHz
16.58 dB
5
0
10
30
50
70
90
110
130
Frequency (MHz)
150
170
190
210
190
210
Figure 5-1: Transducer Power Gain of the BGB707L7ESD.
Input Matching
0
-5
-10
110 MHz
-10.14 dB
-15
80 MHz
-13.45 dB
100 MHz
-11.2 dB
-20
10
30
50
70
90
110
130
Frequency (MHz)
150
170
Figure 5-2: Input Matching of the BGB707L7ESD.
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Technical Report
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50Ω-Matched LNA using BGB707L7ESD for FM Application (80-110MHz)
Output Matching
0
-5
80 MHz
-15.82 dB
-10
100 MHz
-16.81 dB
110 MHz
-16.86 dB
-15
-20
10
30
50
70
90
110
130
Frequency (MHz)
150
170
190
210
170
190
210
Figure 5-3: Output Matching of the BGB707L7ESD.
Reverse Isolation
60
55
50
80 MHz
26.51
45
100 MHz
26.43
40
110 MHz
26.41
35
30
25
20
10
30
50
70
90
110
130
Frequency (MHz)
150
Figure 5-4: Reverse Isolation of the BGB707L7ESD.
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Technical Report
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50Ω-Matched LNA using BGB707L7ESD for FM Application (80-110MHz)
Stability
5
4
1939.3 MHz
1.292
3
2
1
0
10
1010
2010
3010
4010 5010 6010
Frequency (MHz)
7010
8010
9010 10000
Figure 5-5: Stability of the BGB707L7ESD.
Figure 5-6: OIP3 of the BGB707L7ESD.
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Technical Report
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50Ω-Matched LNA using BGB707L7ESD for FM Application (80-110MHz)
6. Evaluation Board and Layout Information
Figure 6-1: PCB Picture of the BGB707L7ESD
Figure 6-2: Layout Information
www.Infineon.com
Published by Infineon Technologies AG
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2009-03-31