nec_ne34018_113012lna_report
TRANSCRIPT
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8/7/2019 NEC_NE34018_113012LNA_report
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NEC NE34018 2.4GHz LNA______________________________________________________________________________________________________
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Valon Technology, LLC: 1of 10 pag eStu ar t R u mley ( 6 5 0 ) 3 6 9 - 0 5 7 5
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1. Purpose
These low-noise amplifier prototypes were designed and tested for application in the receiver tuners in Logitechs 2.4GHz wireless video camera
project. This is the second revision of the 113012 LNA multiple prototype PCB. This second revision is used to optimize the PCB layout of the
microstrip transmission line elements.
A secondary purpose of these LNA prototype circuits is to correct for modeling errors in the circuit simulation tool in order to support a better
understanding of component and PCB layout issues. This information will be vital during manufacturing if component vendor or PCB changes
become necessary.
2. Measurement conditionAmbient temperature TA: 25 C
Nominal impedance 50
3. Characteristics
Data typ. value tolerance / limit______________________________________________________________________________________________________________________________________________________________________________________________________
Supply Voltage 3.3 V .066 VNote: The schematic and photos indicated 3.6V but these test were conducted at 3.3V in order to be compatible with the tunerregulated supply.______________________________________________________________________________________________________________________________________________________________________________________________________
Supply Currenttbd mA
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NEC NE34018 2.4GHz LNA______________________________________________________________________________________________________
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Schematic diagram of the LNA tl=100, tl=100 refers to transmission line tl1 on the gate of Q1
Previous revisions used a total of four bypass capacitors on the two source leads of the transistor. This was found to be unnecessary or desirable
with the highpass input network.
Figure 1LNA tl=100 .
113012 rev.2 NE34018
2.4GHz LNA
tl1=100
+3.3V
tl2
tl5
tl3
tl1
tl6 t7
tl4
IN
OUT
tl8
L5
100NH
0603
R 5 6 .8
0603
1
2
C23
2.0PF
0603FD
R7
150
0603FD
C25
100PF
0603FD
C22
0.8PF
0603
C27
100PF
0603FD
C20
100PF
0603FD
C19
22NF
0603FD
C21
0.1UF
0603FD
Q3
NE34018x
1
2
3
4
C20'
100PF
0603FD
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NEC NE34018 2.4GHz LNA______________________________________________________________________________________________________
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LNA tl=100 Component Values
LNA tl=100 Transmission Line Dimensions
113012 rev. 2 #01 LNA tl=100 transmission lines (dimensions are inch mils
t1l tl2 tl3 tl4 tl5 tl6 tl7 tl8
30x100 12x145 12x125 30x75 30x60 30x50 30x50 30x75
Transmission line dimensions are taken from end of an element to the end or corner of adjoining element with the following exceptions: Transmission line tl1 dimension is taken from the edge of tl2 to the center of the gate pad. Transmission lines tl6 and tl7 dimensions are taken from the center of the source pads to the center of the bypass capacitor pads.
LNA tl=100 Measured Performance
113012 rev. 2
tl=1002400MHz 2450MHz 2500MHz Goal Units
Gain 14.14 14.07 13.95 141 dBInput Return Loss -9.01 -10.11 -11.2
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NEC NE34018 2.4GHz LNA______________________________________________________________________________________________________
______________________________________________________________________________________________________________________________________________________________________________________________________
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LNA tl=100 Performance Plots
Figure 2- LNA tl=100 Gain
Figure 3--LNA tl=100 Input and Output return loss
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NEC NE34018 2.4GHz LNA______________________________________________________________________________________________________
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Figure 5 LNA tl=115
+3.3V
tl5
tl1
tl2
tl3
tl6 tl7
tl4
113012 rev.
2 NE34018
2.4GHz LNA
tl1=115
IN
OUT
tl8
Q2
NE34018x
SOT343R
1
2
3
4
C17
100PF
0603FD
R4
150
0603FD
C8
0.8PF
0603C10
2.0PF
0603
R 2 6 .8
0603
C4
100PF 0603FD
C6
0.1UF
0603FD
C2
22NF 0603FD
1
2
C16
100PF
0603FD
C4'
100PF
0603FD
L2
100NH
0603
Figure 4 Schematic of LNA tl=115
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NEC NE34018 2.4GHz LNA______________________________________________________________________________________________________
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LNA tl=115 Component Values
LNA tl=115 Transmission Line Dimensions
113012 rev. 2 #01 LNA tl=115 transmission lines (dimensions are inch mils
t1l tl2 tl3 tl4 tl5 tl6 tl7 tl8
30x115 12x145 12x125 30x75 30x60 30x50 30x50 30x75
Transmission line dimensions are taken from end of an element to the end or corner of adjoining element with the following exceptions: Transmission line tl1 dimension is taken from the edge of tl2 to the center of the gate pad. Transmission lines tl6 and tl7 dimensions are taken from the center of the source pads to the center of the bypass capacitor pads.
LNA tl=115 Measured Performance
113012 rev. 2tl=115
2400MHz 2450MHz 2500MHz Goal Units
Gain 14.19 14.11 14.00 141 dBInput Return Loss -9.66 -10.85 -12.22
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NEC NE34018 2.4GHz LNA______________________________________________________________________________________________________
______________________________________________________________________________________________________________________________________________________________________________________________________
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LNA tl=115 Performance Plots
Figure 6-- LNA tl=115 Gain
Figure 7-- LNA tl=115 Input and Output Return Loss
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NEC NE34018 2.4GHz LNA______________________________________________________________________________________________________
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Figure 8Schematic diagram of LNA tl=125
Figure 9-- LNA tl=125
+3.3V
tl1
tl2
tl3
tl4 tl5
tl6 tl7
113012 rev.
2 NE34018
2.4GHz LNA
tl1=125
OUT
tl8
J3
CON2
1
2
C1
22NF
0603FD
L1
100NH
0603
C5
0.1UF
0603
C9
2.0PF
0603
C3
100PF 0603FD
Q1
NE34018x
SOT343R1
2
3
4
C11
100PF
0603FD
R1
6.8
0603
C14
100PF
0603FD
R3
150
0603FD
C7
0.8PF
0603
C3'
100PF
0603FD
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8/24/04______________________________________________________________________________________________________
NEC NE34018 2.4GHz LNA______________________________________________________________________________________________________
______________________________________________________________________________________________________________________________________________________________________________________________________
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LNA tl=125 Component Values
LNA tl=125 Transmission Line Dimensions
113012 rev. 2 #01 LNA tl=215 transmission lines (dimensions are inch mils
t1l tl2 tl3 tl4 tl5 tl6 tl7 tl8
30x125 12x145 12x125 30x75 30x60 30x50 30x50 30x75
Transmission line dimensions are taken from end of an element to the end or corner of adjoining element with the following exceptions: Transmission line tl1 dimension is taken from the edge of tl2 to the center of the gate pad. Transmission lines tl6 and tl7 dimensions are taken from the center of the source pads to the center of the bypass capacitor pads.
LNA tl=125 Measured Performance
113012 rev. 2
tl=125
2400MHz 2450MHz 2500MHz Goal Units
Gain 14.16 14.04 13.90 141 dBInput Return Loss -11.97 -13.18 -14.49
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NEC NE34018 2.4GHz LNA______________________________________________________________________________________________________
______________________________________________________________________________________________________________________________________________________________________________________________________
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LNA tl=125 Performance Plots
Figure 10-- LNA tl=125 Gain
Figure 11-- LNA tl=125 Input and Output return loss