Application Note for DAB L-band Amplifier Using the MCH4015

DAB L-band Amplifier Using
the MCH4015
Application Note
http://onsemi.com
Overview
This application note explains about ON Semiconductor’s MCH4015 which is used as a Low
Noise Amplifier (LNA) for DAB (Digital Audio Broadcast).
The MCH4015 is a silicon bipolar transistor best suited for high-frequency applications
which is assembled in the 4-pin surface mount package.
For information about the performance, please refer to the datasheet of this product.
Since the evaluation board is adjusted to achieve optimal performance in L-band (1452 MHz
to 1492 MHz), the product can provide 15.5dB gain and 1.54dB noise figure.
A standard material FR4 is used for the printed circuit board (PCB).
Please note that the losses of the PCB and the SMA connector are not excluded from the
noise figure.
Semiconductor Components Industries, LLC, 2014
February, 2014 – Rev. 0
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DAB L-band Amplifier Using the MCH4015
■Summary of Data
Ta = 25 °C, Input Power = -40 dBm
Parameter
Symbol
DC Voltage
DC Current
Vcc
Icc
Gp1
Gp2
Gp3
NF1
NF2
NF3
RLin1
RLin2
RLin3
RLout1
RLout2
RLout3
ISL1
ISL2
ISL3
Gain 1dB
Compression
Input Power
Input 3rd Order
Intercept Point
Gain
Noise Figure
Input Return Loss
Output Return Loss
Isolation
Condition
Result
Unit
f = 1452 MHz
f = 1472 MHz
f = 1492 MHz
f = 1452 MHz
f = 1472 MHz
f = 1492 MHz
f = 1452 MHz
f = 1472 MHz
f = 1492 MHz
f = 1452 MHz
f = 1472 MHz
f = 1492 MHz
f = 1452 MHz
f = 1472 MHz
f = 1492 MHz
2.6
8.5
15.5
15.4
15.3
11.7
11.6
11.4
11.0
12.0
12.9
19.9
19.9
19.9
2.8
9.4
15.6
15.5
15.4
1.52
1.54
1.62
12.1
11.9
11.5
11.3
12.5
13.5
20.5
20.3
20.3
3.0
10.3
15.8
15.7
15.5
12.6
12.2
11.6
11.7
12.9
13.9
20.7
20.6
20.6
V
mA
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Pin1dB
f = 1472 MHz
-
-10
-
dBm
IIP3
f1 = 1472 MHz
f2 = 1473 MHz
-
0
-
dBm
Pin = -30 dBm
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DAB L-band Amplifier Using the MCH4015
■Circuit Design
Vcc = 2.8V
C6
R1
R2
L3
L2
C1
C2
L1
OUTPUT
INPUT
C3
TR1
C5
C4
■Evaluation Board
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DAB L-band Amplifier Using the MCH4015
■Bill of Materials
Item
Symbol
Value
Manufacturer
Size
Bip-Tr
TR1
MCH4015
ON Semiconductor
SC82
C1,C2
C3,C4
100 pF
3 pF
TAIYOYUDEN
TAIYOYUDEN
1005
1005
C5
1.6 pF
Murata GQM1884C2A1R6CB01
1608
C6
0.1 uF
TAIYOYUDEN
1608
R1
56 Ω
Various
1608
Capacitor
Resistor
Inductor
Material
R2
22 kΩ
Various
1608
L1
1.8 nH
TOKO LL1005-FHL1N8S
1005
L2
3.9 nH
TOKO LL1005-FHL3N9S
1005
L3
33 nH
TOKO LL1005-FHL33NJ
1005
-
FR4
-
24.5x12.7mm
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DAB L-band Amplifier Using the MCH4015
Power Gain ‐ dB
■Power Gain
20
19
18
17
2.8V
3.0V
16
15
2.6V
14
13
12
11
10
1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000
Frequency ‐ MHz
■Isolation
0
‐5
Isolation ‐ dB
‐10
‐15
2.8V
‐20
‐25
2.6V
3.0V
‐30
‐35
‐40
1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000
Frequency ‐ MHz
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DAB L-band Amplifier Using the MCH4015
■Input Return Loss
Input Return Loss ‐ dB
0
‐5
2.6V
2.8V
‐10
3.0V
‐15
‐20
1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000
Frequency ‐ MHz
■Output Return Loss
Output Return Loss ‐ dB
0
‐5
2.6V
‐10
‐15
3.0V
2.8V
‐20
1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000
Frequency ‐ MHz
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DAB L-band Amplifier Using the MCH4015
■Noise Figure
3
Noise Figure ‐ dB
2.5
2
1.5
1
0.5
0
1440
1450
1460
1470
1480
Frequency ‐ MHz
1490
1500
■S11, S21, S12, S22 Wide Span
40
S11,S21,S12,S22 ‐ dB
20
S21
S11
0
S22
‐20
‐40
S12
‐60
‐80
10
100
1000
Frequency ‐ MHz
10000
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DAB L-band Amplifier Using the MCH4015
S(1,1)
■Smith Chart
Input Return Loss
1472 MHz
freq
(1.300GHz
1.700GHz)
1.3
GHz toto1.7
GHz
S(2,2)
■Smith Chart
Output Return Loss
1472 MHz
freq1.3
(1.300GHz
1.700GHz)
GHz toto1.7
GHz
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DAB L-band Amplifier Using the MCH4015
■Gain 1dB Compression Point
15
Output Power ‐ dBm
10
5
0
‐5
‐10
‐15
‐20
‐25
‐30
‐45
‐40
‐35
‐30
‐25
‐20
‐15
Input Power ‐ dBm
‐10
‐5
0
■Input 3rd Order Intercept Point
f1 = 1452 MHz, f2 = 1492 MHz, Pin = -30 dBm
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DAB L-band Amplifier Using the MCH4015
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