High Frequency Ceramic Solutions
868 and 915MHz dual (wideband) ISM band SMD chip antenna
Detail Specification:
P/N 0900AT43A0070
Page 1 of 11
1/29/2021
General Specifications
Let us help you with the antenna design, optimization, and tuning!
https://www.johansontechnology.com/ask-a-question
0900AT43A0070
Part Number
858 - 928
Frequency (MHz)
Peak Gain (dBi)
-0.5 typ. (XZ-Total)
Average Gain (dBi)
-2.5 typ. (XZ-Total)
48% ave.
Radiated Efficiency*
4 min.
Return Loss (dB)
50
Impedance (Ω)
Input Power (W)
2 max. (CW)
Operating Temperature
-40 to +85°C
Recommended Storage
Conditions and Period
for unused T&R Product
Humidity 45 - 75% RH
Reel Quantity (pcs/reel)
1,000
Top
+5 to +35°C
18 months max.
Bottom
*Efficiency based on evaluation board 0900AT43A0070-EB2SMA, Layout# 2, page 6
Part Number Explanation
Packing Style
P/N Suffix
Evaluation Board
Bulk (loose pcs)
Suffix = S
e.g. 0900AT43A0070S
T&R
Suffix = E
e.g. 0900AT43A0070E
100% Tin
Suffix = None
e.g. 0900AT43A0070(E or S)
Layout Recommendation #1 - 0900AT43A0070-EB1SMA, see page 2
Layout Recommendation #2 - 0900AT43A0070-EB2SMA, see page 6
Mechanical Dimensions
Terminal Configuration
In
mm
No.
Function
L
0.276 ± 0.008
7.00 ± 0.20
1
RF Feeding Point
W
0.079 ± 0.008
2.00 ± 0.20
2
To trace element
T
0.031
0.80
a
0.020 ± 0.012
+.004 / -.008
+0.10 / -0.20
0.50 ± 0.30
L
a
W
T
Top View
Side View
Johanson Technology, Inc. reserves the right to make design changes without notice.
All sales are subject to Johanson Technology, Inc. terms and conditions.
https://www.johansontechnology.com
4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821
Ver. 2.0
2021 Johanson Technology, Inc. All Rights Reserved
High Frequency Ceramic Solutions
868 and 915MHz dual (wideband) ISM band SMD chip antenna
Detail Specification:
P/N 0900AT43A0070
Page 2 of 11
1/29/2021
Layout Recommendation #1: Evaluation Board p/n: 0900AT43A0070-EB1SMA
10mm
35mm
• Orderable EVB for evaluation, it comes with a female SMA
connector. Go to: https://www.johansontechnology.com/requesta-sample and ask for p/n 0900AT43A0070-EB1SMA
GND Plane
30mm
50Ω CPWG
Feed Line
No
GND
• The total antenna area usage for this EVB is approx.
25x10mm (due to trace element), but the trace can be reshaped to reduce effective area and conform to the designer's
PCB.
19mm (can be any length)
0.5
All units in: mm
• Attention: Matching circuits and
6.5 component values will be different on the
0.5
GND
0.5
22.5
1.5
0 Ohm
1.0
1.4
*
2.2 pF
client's design, depending on PCB layout,
geometry, etc. It is recommended that the
designer leave available slots for a "pi" (or
shunt-series-shunt) network. The antenna
matching network values you see here
are used when antenna is mounted on
Johanson's evaluation board.
1.8
GND
6
8.4
*Line width should be designed to match 50ohm characteristic
• Need help laying out the antenna, want
us to review your antenna design (free!),
require the Gerber files for this EVB, or
would like us to validate the new tuning
values of your PCB (fee may apply) go to:
https://www.johansontechnology.com/ask-aquestion
impedance, depending on your PCB material and thickness (distance
to GND)
Johanson Technology, Inc. reserves the right to make design changes without notice.
All sales are subject to Johanson Technology, Inc. terms and conditions.
https://www.johansontechnology.com
4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821
Ver. 2.0
2021 Johanson Technology, Inc. All Rights Reserved
High Frequency Ceramic Solutions
868 and 915MHz dual (wideband) ISM band SMD chip antenna
Detail Specification:
P/N 0900AT43A0070
Page 3 of 11
1/29/2021
Typical Electrical Performance (T=25°C) on Layout Recommendation #1
Return Loss (with matching)
0
m15
m18
-5
dB(S(1,1))
-10
-15
-20
m25
m15
freq= 858.0MHz
dB(S(1,1))=-6.031
m25
freq= 893.0MHz
dB(S(1,1))=-22.032
m18
freq= 928.0MHz
dB(S(1,1))=-7.694
-25
-30
0.5
0.7
0.9
1.1
freq, GHz
1.3
1.5
This antenna has about 20MHz of guard-band on each side.
Johanson Technology, Inc. reserves the right to make design changes without notice.
All sales are subject to Johanson Technology, Inc. terms and conditions.
https://www.johansontechnology.com
4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821
Ver. 2.0
2021 Johanson Technology, Inc. All Rights Reserved
High Frequency Ceramic Solutions
868 and 915MHz dual (wideband) ISM band SMD chip antenna
Detail Specification:
P/N 0900AT43A0070
Page 4 of 11
1/29/2021
Typical Radiation Patterns (T=25°C) of Layout Recommendation #1
Y :Φ(Phi)=90o
XY-plane @868MHz
Total
X :Φ(Phi)=0o
Z : θ(Theta)=0o
XZ-Plane @868MHz
Total
YZ-Plane @868MHz
Total
Johanson Technology, Inc. reserves the right to make design changes without notice.
All sales are subject to Johanson Technology, Inc. terms and conditions.
https://www.johansontechnology.com
4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821
Ver. 2.0
2021 Johanson Technology, Inc. All Rights Reserved
High Frequency Ceramic Solutions
868 and 915MHz dual (wideband) ISM band SMD chip antenna
Detail Specification:
P/N 0900AT43A0070
Page 5 of 11
1/29/2021
Typical Radiation Patterns (T=25°C) of Layout Recommendation #1
Y :Φ(Phi)=90o
XY-plane @915MHz
Total
X :Φ(Phi)=0o
Z : θ(Theta)=0o
XZ-Plane @915MHz
Total
YZ-Plane @915MHz
Total
Johanson Technology, Inc. reserves the right to make design changes without notice.
All sales are subject to Johanson Technology, Inc. terms and conditions.
https://www.johansontechnology.com
4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821
Ver. 2.0
2021 Johanson Technology, Inc. All Rights Reserved
High Frequency Ceramic Solutions
868 and 915MHz dual (wideband) ISM band SMD chip antenna
Detail Specification:
P/N 0900AT43A0070
Page 6 of 11
1/29/2021
Layout Recommendation #2: Evaluation Board p/n: 0900AT43A0070-EB2SMA
70mm
10mm
No
Ground
Ground plane
30mm
50Ω Feed
Line
19mm (can be any length)
• Orderable EVB for evaluation, it comes with a female SMA connector. Go
to: https://www.johansontechnology.com/request-a-sample and ask for p/n
0900AT43A0070-EB2SMA
• The total antenna area usage for this EVB is
approx. 25x10mm (due to trace element), but
the trace can be re-shaped to reduce effective
area and conform to the designer's PCB!
0.5
All units in: mm
• Attention: Matching circuits and
6.5 component values will be different on the
0.5
GND
0.5
22.5
1.5
1.0
client's design, depending on PCB layout,
geometry, etc. It is recommended that the
designer leave available slots for a "pi" (or
shunt-series-shunt) network. The antenna
matching network values you see here
are used when antenna is mounted on
Johanson's evaluation board.
1.4
12 pF
*
1.2 pF
1.8
GND
6
8.4
*Line width should be designed to match 50ohm characteristic
• Need help laying out the antenna, want
us to review your antenna design (free!),
require the Gerber files for this EVB, or
would like us to validate the new tuning
values of your PCB (fee may apply) go to:
https://www.johansontechnology.com/ask-aquestion
impedance, depending on your PCB material and thickness (distance
to GND)
Johanson Technology, Inc. reserves the right to make design changes without notice.
All sales are subject to Johanson Technology, Inc. terms and conditions.
https://www.johansontechnology.com
4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821
Ver. 2.0
2021 Johanson Technology, Inc. All Rights Reserved
High Frequency Ceramic Solutions
868 and 915MHz dual (wideband) ISM band SMD chip antenna
Detail Specification:
P/N 0900AT43A0070
Page 7 of 11
1/29/2021
Typical Electrical Performance (T=25°C) on Layout Recommendation #2
Return Loss (with matching)
0
m15
m18
-5
m25
dB(S(1,1))
-10
-15
-20
m15
freq= 858.0MHz
dB(S(1,1))=-4.527
m25
freq= 893.0MHz
dB(S(1,1))=-9.776
m18
freq= 928.0MHz
dB(S(1,1))=-6.947
-25
-30
0.5
0.7
0.9
1.1
freq, GHz
1.3
1.5
This antenna has about 20MHz of guard-band on each side.
Johanson Technology, Inc. reserves the right to make design changes without notice.
All sales are subject to Johanson Technology, Inc. terms and conditions.
https://www.johansontechnology.com
4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821
Ver. 2.0
2021 Johanson Technology, Inc. All Rights Reserved
High Frequency Ceramic Solutions
868 and 915MHz dual (wideband) ISM band SMD chip antenna
Detail Specification:
P/N 0900AT43A0070
Page 8 of 11
1/29/2021
Typical Radiation Patterns (T=25°C) of Layout Recommendation #2
Y :Φ(Phi)=90o
XY-plane @868MHz
Total
X :Φ(Phi)=0o
Z : θ(Theta)=0o
XZ-Plane @868MHz
Total
YZ-Plane @868MHz
Total
Johanson Technology, Inc. reserves the right to make design changes without notice.
All sales are subject to Johanson Technology, Inc. terms and conditions.
https://www.johansontechnology.com
4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821
Ver. 2.0
2021 Johanson Technology, Inc. All Rights Reserved
High Frequency Ceramic Solutions
868 and 915MHz dual (wideband) ISM band SMD chip antenna
Detail Specification:
P/N 0900AT43A0070
Page 9 of 11
1/29/2021
Typical Radiation Patterns (T=25°C) of Layout Recommendation #2
Y :Φ(Phi)=90o
XY-plane @915MHz
Total
X :Φ(Phi)=0o
Z : θ(Theta)=0o
XZ-Plane @915MHz
Total
YZ-Plane @915MHz
Total
Johanson Technology, Inc. reserves the right to make design changes without notice.
All sales are subject to Johanson Technology, Inc. terms and conditions.
https://www.johansontechnology.com
4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821
Ver. 2.0
2021 Johanson Technology, Inc. All Rights Reserved
High Frequency Ceramic Solutions
868 and 915MHz dual (wideband) ISM band SMD chip antenna
Detail Specification:
P/N 0900AT43A0070
Page 10 of 11
1/29/2021
Alternative layout with reduced effective area
13 mm
12 mm
Line wide=0.5mm
Gap size=0.5mm
9 mm
2.6 mm
6 mm
2.0 mm
No EVB available for this layout
Total radiated efficiency will be reduced by about 10%.
Do you have more questions about this layout? Contact our apps team at:
https://www.johansontechnology.com/ask-a-question
Johanson Technology, Inc. reserves the right to make design changes without notice.
All sales are subject to Johanson Technology, Inc. terms and conditions.
https://www.johansontechnology.com
4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821
Ver. 2.0
2021 Johanson Technology, Inc. All Rights Reserved
High Frequency Ceramic Solutions
868 and 915MHz dual (wideband) ISM band SMD chip antenna
Detail Specification:
P/N 0900AT43A0070
Page 11 of 11
1/29/2021
Antenna tuning, optimization, and validation services:
https://www.johansontechnology.com/ipc-antenna-services
For more antennas and to download measured S-parameters, go to:
https://www.johansontechnology.com/antennas
Soldering Information
https://www.johansontechnology.com/ipcsoldering-profile
MSL Info
https://www.johansontechnology.com/msl-rating
Packaging Information
https://www.johansontechnology.com/tape-reel-packaging
For layout review contact our applications team at:
https://www.johansontechnology.com/ask-a-question
RoHS Compliance
https://www.johansontechnology.com/rohs-compliance
Johanson Technology, Inc. reserves the right to make design changes without notice.
All sales are subject to Johanson Technology, Inc. terms and conditions.
https://www.johansontechnology.com
4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821
Ver. 2.0
2021 Johanson Technology, Inc. All Rights Reserved