Application Note for DAB band-III Amplifier Using the MCH4015

DAB band-Ⅲ 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 band-Ⅲ (170 MHz
to 250 MHz), the product can provide 23dB gain and 1.06dB 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 band-Ⅲ 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
Noise Figure
Input Return Loss
Output Return Loss
Isolation
Gain 1dB
Compression
Input Power
Input 3rd Order
Intercept Point
Condition
Result
Unit
f = 170 MHz
f = 210 MHz
f = 250 MHz
f = 170 MHz
f = 210 MHz
f = 250 MHz
f = 170 MHz
f = 210 MHz
f = 250 MHz
f = 170 MHz
f = 210 MHz
f = 250 MHz
f = 170 MHz
f = 210 MHz
f = 250 MHz
2.6
8.5
22.8
22.6
22.0
10.9
11.4
11.0
13.3
13.9
14.0
26.0
26.0
26.2
2.8
9.4
23.2
23.0
22.4
0.93
1.06
1.12
11.4
11.7
11.2
14.6
15.3
14.9
26.4
26.4
26.6
3.0
10.3
23.6
23.3
22.7
11.6
11.7
11.1
15.9
16.7
15.8
26.7
26.7
27.0
V
mA
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Pin1dB
f = 210 MHz
-
-20
-
dBm
IIP3
f1 = 210 MHz
f2 = 211 MHz
-
-7
-
dBm
Pin = -30 dBm
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DAB band-Ⅲ Amplifier Using the MCH4015
■Circuit Design
Vcc = 2.8V
C5
R1
C3
R2
C1
R3
L3
C4
OUTPUT
L1
L2
INPUT
C2
TR1
■Evaluation Board
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DAB band-Ⅲ Amplifier Using the MCH4015
■Bill of Materials
Item
Symbol
Value
Manufacturer
Size
Bip-Tr
TR1
MCH4015
ON Semiconductor
SC82
C1,C2,C3
1000 pF
TAIYOYUDEN
1005
C4
7 pF
TAIYOYUDEN
1005
C5
0.1 uF
TAIYOYUDEN
1608
R1
56 Ω
Various
1608
R2
22 kΩ
Various
1608
R3
1.2 kΩ
Various
1005
L1,L2
12 nH
TOKO LL1005-FHL12NJ
1005
L3
120 nH
TOKO LL1608-FS121N
1608
-
FR4
-
25.4x12.7mm
Capacitor
Resistor
Inductor
Material
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DAB band-Ⅲ Amplifier Using the MCH4015
Power Gain ‐ dB
■Power Gain
25
24
23
22
21
20
19
18
17
16
15
3.0V
2.8V
2.6V
0
50
100
150 200 250
Frequency ‐ MHz
300
350
400
■Isolation
0
‐5
Isolation ‐ dB
‐10
‐15
‐20
2.6V
‐25
‐30
2.8V
3.0V
‐35
‐40
0
50
100
150 200 250
Frequency ‐ MHz
300
350
400
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DAB band-Ⅲ Amplifier Using the MCH4015
■Input Return Loss
Input Return Loss ‐ dB
0
‐5
2.8V
2.6V
‐10
3.0V
‐15
‐20
0
50
100
150 200 250
Frequency ‐ MHz
300
350
400
300
350
400
■Output Return Loss
Output Return Loss ‐ dB
0
‐5
‐10
2.6V
‐15
2.8V
3.0V
‐20
0
50
100
150 200 250
Frequency ‐ MHz
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DAB band-Ⅲ Amplifier Using the MCH4015
■Noise Figure
3
Noise Figure ‐ dB
2.5
2
1.5
1
0.5
0
50
100
150
200
250
Frequency ‐ MHz
300
350
■S11, S21, S12, S22 Wide Span
40
S21
S11,S21,S12,S22 ‐ dB
20
0
S11
S22
‐20
S12
‐40
‐60
‐80
10
100
1000
Frequency ‐ MHz
10000
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DAB band-Ⅲ Amplifier Using the MCH4015
S(1,1)
■Smith Chart
Input Return Loss
210 MHz
MHz to 410
MHz
fr10
eq (10.00MHz
to 410.0MHz)
S(2,2)
■Smith Chart
Output Return Loss
210 MHz
fr10
eq (10.00MHz
to 410.0MHz)
MHz to 410
MHz
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DAB band-Ⅲ Amplifier Using the MCH4015
■Gain 1dB Compression Point
10
Output Power ‐ dBm
5
0
‐5
‐10
‐15
‐20
‐45
‐40
‐35
‐30
‐25
‐20
Input Power ‐ dBm
‐15
‐10
■Input 3rd Order Intercept Point
f1 = 210 MHz, f2 = 211 MHz, Pin = -30 dBm
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DAB band-Ⅲ Amplifier Using the MCH4015
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