lte cat-m1 / iot antenna · the lsp69001299tr lte nb-iot antenna can be designed into many wireless...
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Application Note: LSP69001299TR
LTE Cat-M1 / IoT Antenna Specifications
031820-A
1
LTE Cat-M1 / NB-IoT Antenna SpecificationsApplication Note | Part No. LSP69001299TR
The Important Information/Disclaimer is incorporated in these specifications by reference and should be reviewed in full before placing any order.
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FEATURES LTE Cat-M1/NB-IoT Quicker time to market Standard Product Smaller Form Factor & Ground Clearance Requirements
ADVANTAGES Eliminates External antennas Fewer design changes. Simple implementation Speeds development time and reduces costs since reduces NRE
and custom development time Can be used in a variety of custom form factors and applications
DESIGN GUIDELINESINTRODUCTIONThe LSP69001299TR LTE NB-IoT Antenna can be designed into many wireless product types using small form factor board. The following sections explain Ethertronics’ recommended layouts to help the designer integrate the antennas into a product with optimum performance.
ELECTRICAL SPECIFICATIONSTypical performance antenna measured on 60 x 40 mm PCB
Frequency (MHz)
On 60x40 mm PCBB12 B13 B20 1710 - 2170
Return Loss <-2.5 dB <-3 dBEfficiency 15 % 42 %Peak Gain -2.4 dBi @ 740 MHz -2.8 dBi @ 750 MHz -3.0 dBi @ 815 MHz 1.3 dBi @ 2030 MHz
Impeadance 50 ohms unbalanced
MECHANICAL SPECIFICATIONSOrdering Part Numbers LSP69001299TR
Dimensions (mm)35.00 ± 0.10 length 9.00 ± 0.10 width
3.20 ± 0.10 thickness
Mechanical mounting SMT (P&P)
Weight (grams) 0.2 grams
Color Black
2
LTE Cat-M1 / NB-IoT Antenna SpecificationsApplication Note | Part No. LSP69001299TR
The Important Information/Disclaimer is incorporated in these specifications by reference and should be reviewed in full before placing any order.
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FEATURESTypical layout dimensions in mm
Additional vias : Diam. 0.2 mm to be placed around antenna, (no vias on transmission lines)
Via holes must be covered by solder mask
Pin# Description
1 Dummy Pad
2 Dummy Pad
3 Ground
4 Feed
5 Ground
6 Dummy Pad
7 Dummy Pad
Top Solder Mask
Default Pi matching Network values with instructions can be found under Antenna Matching Network.
50 Ohms Trace
Top Metal
Pin #2 Pin #3 Pin #4 Pin #5
Pin #1
Pin #6
Pin #7
Antenna Outline
3
LTE Cat-M1 / NB-IoT Antenna SpecificationsApplication Note | Part No. LSP69001299TR
The Important Information/Disclaimer is incorporated in these specifications by reference and should be reviewed in full before placing any order.
022420
ANTENNA LOCATIONThe Figure below shows LSP69001299TR typical landing location of LTE Cat-M1/NB-IoT Antenna
ANTENNA TUNING GUIDELINESThe board size and antenna location are the most important factor for antenna performance. The smaller the board size, the lower the low band performance will be. Nonetheless, antenna performance can be improved by optimizing the matching components.
Here are some studies to help identifying the optimum circuit matching and the best battery position far from antenna:
Study 1: Antenna performance using the circuit matching Study 2: Antenna performance variation based on R1 and R2 effect Study 3: Antenna performance variation based on S1 effect Study 4: Antenna performance variation with different battery position
9001299-01.B
60 mm
40 mm
4
LTE Cat-M1 / NB-IoT Antenna SpecificationsApplication Note | Part No. LSP69001299TR
The Important Information/Disclaimer is incorporated in these specifications by reference and should be reviewed in full before placing any order.
RETURN LOSS AND EFFICIENCY PLOTSTypical Performance measured with 60 x 40 mm PCB
Z Y
-1 5
-1 2
-9
-6
-3
0
698 724.2 750.4 776.6 802.8 829 855.2 881.4 907.6 933.8 960
Ret
urn
Loss
(dB)
Frequency (MHz)
-15
-12
-9
-6
-3
0
1710 1756 1802 1848 1894 1940 1986 2032 2078 2124 2170
Ret
urn
Loss
(dB)
Frequency (MHz)
0
5
10
15
20
25
30
35
40
45
50
698 724.2 750.4 776.6 802.8 829 855.2 881.4 907.6 933.8 960
Effic
ienc
y (%
)
Frequency (MHz)0
10
20
30
40
50
60
70
80
90
100
1710 1756 1802 1848 1894 1940 1986 2032 2078 2124 2170
Effic
ienc
y (%
)
Frequency (MHz)
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LOW BAND RETURN LOSS
LOW BAND EFFICIENCY HIGH BAND EFFICIENCY
HIGH RETURN LOSS
5
LTE Cat-M1 / NB-IoT Antenna SpecificationsApplication Note | Part No. LSP69001299TR
The Important Information/Disclaimer is incorporated in these specifications by reference and should be reviewed in full before placing any order.
RADIATION PATTERN PLOTSTypical performance measured with 60 x 40 mm PCB Measured at 700, 750, 850, 900, 1800, 1900, 2100 MHz
Z
X
Y
Mea
sure
d at
700
, 750
, 80
0, 9
00 M
Hz
Mea
sure
d at
180
0, 1
900,
21
00 M
Hz
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6
LTE Cat-M1 / NB-IoT Antenna SpecificationsApplication Note | Part No. LSP69001299TR
The Important Information/Disclaimer is incorporated in these specifications by reference and should be reviewed in full before placing any order.
ANTENNA MATCHING NETWORK (LSP69001299TR)Typical matching values on 60 x 40 mm PCB
Antenna Matching(Antenna Matching):
pads are directly inline with the antenna feed trace.
Pin# Description
1 Dummy Pad
2 Dummy Pad
3 Ground
4 Feed
5 Ground
6 Dummy Pad
7 Dummy Pad
ANTENNA MATACHING CIRCUITS1/S3 S2 P1 P2/P3/P4 R1 R2
Defaulting Matching 0 Ohm 2pF 13NH DNI 20nH 22nH
Part Number RC0402J R-070RL
04025JR0P BS
LQW15AN13 NG00D
LQW15AN20 NG00D
LQW15AN22 NG00D
1 2 3 4 5 6 7
R1 R2
S2 S3
P1 P2 P3 P4
50 Ohms
(Antenna Matching)S1
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R1 S1
S2S3
P1
P2
P3
P4
R2
[[[
[[ [[
[ [
[[[[[ [[
[
[
7
LTE Cat-M1 / NB-IoT Antenna SpecificationsApplication Note | Part No. LSP69001299TR
The Important Information/Disclaimer is incorporated in these specifications by reference and should be reviewed in full before placing any order.
STUDY 1: ANTENNA MATCHING NETWORK FOR B12, B13 AND B20Measured on 60 x 40 mm PCB
S1/S3 S2 P1 P2 P3/P4 R1 R2
B12 Matching 0 Ohm 2.6pF 8.2nH 8.2nH DNI 22nH 22nH
B13 Matching 0 Ohm 3.5pF 10nH DNI DNI 18nH 18nH
B20 Matching 0 Ohm 1.5pF 22nH DNI DNI 18nH 18nH
RETURN LOSS AND EFFICIENCY PLOTSBelow are typical performances using Ethertornics Standard demo-board.
-15
-12
-9
-6
-3
0
698 724.2 750.4 776.6 802.8 829 855.2 881.4 907.6 933.8 960
Ret
urn
Loss
(dB)
Frequency (MHz)
B12 B13 B20
-15
-12
-9
-6
-3
0
1710 1756 1802 1848 1894 1940 1986 2032 2078 2124 2170
Ret
urn
Loss
(dB
)
Frequency (MHz)
0
5
10
15
20
25
30
35
40
45
50
698 724.2 750.4 776.6 802.8 829 855.2 881.4 907.6 933.8 960
Effic
ienc
y (%
)
Frequency (MHz)
B12 B13 B20
0
10
20
30
40
50
60
70
80
90
100
1710 1756 1802 1848 1894 1940 1986 2032 2078 2124 2170
Effic
ienc
y (%
)
Frequency (MHz)
Low Band Return Loss
Low Band Efficiency
High Band Return Loss
High Band Efficiency
022420
8
LTE Cat-M1 / NB-IoT Antenna SpecificationsApplication Note | Part No. LSP69001299TR
The Important Information/Disclaimer is incorporated in these specifications by reference and should be reviewed in full before placing any order.
STUDY 2: ANTENNA MATCHING NETWORK / THE R1 AND R2 EFFECT ON THE LOW BAND PERFORMANCEMeasured on 60 x 40 mm PCB
S1/S3 S2 P1 P2 P3/P4 R1 R2
Config1 0 Ohm 2.6pF 8.2nH 8.2nH DNI 15nH 15nH
Config2 0 Ohm 2.6pF 8.2nH 8.2nH DNI 18nH 18nH
Config3 0 Ohm 2.6pF 8.2nH 8.2nH DNI 22nH 22nH
RETURN LOSS AND EFFICIENCY PLOTSMeasured on 60 x 40 mm PCB
-15
-12
-9
-6
-3
0
698 724.2 750.4 776.6 802.8 829 855.2 881.4 907.6 933.8 960
Ret
urn
Loss
(dB)
Frequency (MHz)
B12 B13 B20
-15
-12
-9
-6
-3
0
1710 1756 1802 1848 1894 1940 1986 2032 2078 2124 2170
Ret
urn
Loss
(dB)
Frequency (MHz)
0
5
10
15
20
25
30
35
40
45
50
698 724.2 750.4 776.6 802.8 829 855.2 881.4 907.6 933.8 960
Effic
ienc
y (%
)
Frequency (MHz)
B12 B13 B20
0
10
20
30
40
50
60
70
80
90
100
1710 1756 1802 1848 1894 1940 1986 2032 2078 2124 2170
Effic
ienc
y (%
)
Frequency (MHz)
Low Band Return Loss
Low Band Return Efficiency
High Band Return Loss
High Band Return Efficiency
031820
9
LTE Cat-M1 / NB-IoT Antenna SpecificationsApplication Note | Part No. LSP69001299TR
The Important Information/Disclaimer is incorporated in these specifications by reference and should be reviewed in full before placing any order.
STUDY 3: ANT ENNA MATCHING NETWORK / THE EFFECT OF S1 ON THE HIGH BAND PERFORMANCEMeasured on 60 x 40 mm PCB
S3 S2 P1 P2 P3/P4 R1 R2Config1 0 Ohm 2.6pF 8.2nH 8.2nH DNI 15nH 15nH
Config1 Config A Config B Config C Config DS1 0 Ohm 1nH 2nH 6.8pF 10pF
RETURN LOSS PLOT AND EFFICIENCY PLOTSMeasured on 60 x 40 mm PCB
-15
-12
-9
-6
-3
0
698 724.2 750.4 776.6 802.8 829 855.2 881.4 907.6 933.8 960
Ret
urn
Loss
(dB)
Frequency (MHz)
-15
-12
-9
-6
-3
0
1710 1756 1802 1848 1894 1940 1986 2032 2078 2124 2170
Ret
urn
Loss
(dB)
Frequency (MHz)
0
5
10
15
20
25
30
35
40
45
50
698 724.2 750.4 776.6 802.8 829 855.2 881.4 907.6 933.8 960
Effic
ienc
y (%
)
Frequency (MHz)
B12 B13 B20
0
10
20
30
40
50
60
70
80
90
100
1710 1756 1802 1848 1894 1940 1986 2032 2078 2124 2170
Effic
ienc
y (%
)
Frequency (MHz)
Low Band Return Loss
Low Band Efficiency
High Band Return Loss
High Band Effieciency
S1=0Ω S1=1nH S1=2nH S1=6.8pF S1=10pF
S1=0Ω S1=1nH S1=2nH S1=6.8pF S1=10pF
B12 B13 B20
022420
10
LTE Cat-M1 / NB-IoT Antenna SpecificationsApplication Note | Part No. LSP69001299TR
The Important Information/Disclaimer is incorporated in these specifications by reference and should be reviewed in full before placing any order.
STUDY 4: THE BATTERY POSITION EFFECT UNDER THE EVBMeasured on 60 x 40 mm PCB with matching Config1
BATTERY POSITION EFFECT: RETURN LOSS AND EFFICIENCY PLOT (LSP69001299TR WITH MATCHING CONFIG1)Measured on 60 x 40 mm PCB
-15
-12
-9
-6
-3
0
698 724.2 750.4 776.6 802.8 829 855.2 881.4 907.6 933.8 960
Ret
urn
Loss
(dB)
Frequency (MHz)
B12 B13 B20
-15
-12
-9
-6
-3
0
1710 1756 1802 1848 1894 1940 1986 2032 2078 2124 2170
Ret
urn
Loss
(dB)
Frequency (MHz)
0
5
10
15
20
25
30
35
40
45
50
698 724.2 750.4 776.6 802.8 829 855.2 881.4 907.6 933.8 960
Effic
ienc
y (%
)
Frequency (MHz)
B12 B13 B20
0
10
20
30
40
50
60
70
80
90
100
1710 1756 1802 1848 1894 1940 1986 2032 2078 2124 2170
Effic
ienc
y (%
)
Frequency (MHz)
W/o battery 13mm 11mm 5mm 0mm
W/o battery 13mm 11mm 5mm 0mm
Low Band Return Loss
Low Band Return Efficiency
High Band Return Loss
High Band Return Efficiency
022420
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LTE Cat-M1 / NB-IoT Antenna SpecificationsApplication Note | Part No. LSP69001299TR
The Important Information/Disclaimer is incorporated in these specifications by reference and should be reviewed in full before placing any order.
Adjust the reflow duration to create good solder joints without raising the antenna temperature beyond the allowed maximum of 260° C.
Paste Stencil RecommendationEthertronics recommends application of paste stencil to a thickness of 0.1mm, applied to within 0.125mm of the solder mask surrounding each exposed metal pad on the PCB. PCB layouts for each antenna are provided in earlier section of this document.
Soldering RecommendationsThe recommended method for soldering the antenna to the board is forced convection reflow soldering. The following suggestions provide information on how to optimize the reflow process for the antenna:
Additional Manufacturing RecommendationsCare should be taken during certain customer-specific manufacturing processes including PCB separation and Ultrasonic Welding to ensure these processes don't create damage to the components
Cleaning RecommendationsAfter the soldering process, a simple wash with deionized water sufficiently removes most residues from the PCB. Most board assembly manufacturers use either water-soluble fluxes with water wash, or "no clean" fluxes that do not require cleaning after reflow.Acceptable cleaning solvents are CFC alternatives, Isopropyl Alcohol (IPA), and water. If the application uses other types of solvents, please consult with Ethertronics.Cleaning processes that should be avoided are ultrasonic cleaning and any abrasive techniques, such as scrubbing with a cotton swab or with an abrasive material.
Rework & Removal RecommendationsThere may be a need to rework or remove the antenna from the PCB. Although Ethertronics’ antennas are designed for ease-of-use, use care when separating them from the PCBs. Careless heating or removal of the antenna can cause thermal, mechanical or lead damage. These degradations may render the antenna useless, impeding any failure analysis and preventing the reuse of the device. Therefore it is recommended to observe the following precautions:• The component can be reworked and soldered by hand using a soldering iron. However care should be used so the temperature does
not exceed 260°C. The soldering iron should not touch the composite material while soldering the leads of the antenna.• The component can be reworked and soldered using a hot air rework station. However, care should be taken to ensure that the
temperature does not exceed 260°C.• Once the solder on the PCB is sufficiently heated, use a vacuum pen to lift the antenna straight up off the PCB. Avoid twisting or rotating
the device while removing it.
Tape & Reel Specifications Product will be shipped in Tape and Reel packaging.
Product specifications subject to change without notice.
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