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"High Frequency Ceramic Solutions"
915 MHz Antenna
Detail Specification: 02/20/09 General Specifications
Part Number Frequency Range Peak Gain Average Gain Return Loss Impedance Input Power 0915AT43A0026 902 - 928 -1.0 dBi typ. (XZ-total) -4.0 dBi typ. (XZ-total) 8.5 dB min. 50 2W max. No. 1 2 Function Feeding Point NC 2 1 Terminal Configuration Operating Temperature Storage Temperature Range Reel Quanity -40 to +85C +5~+35C, Humidity 45~75%RH 1,000
P/N 0915AT43A0026
Page 1 of 3
Mechanical Dimensions
In L W T a 0.276 0.008 0.079 0.008 0.031 +.004/-.008 0.020 0.012 mm 7.00 0.20 2.00 0.20 0.80
+0.1/-0.2
a W T L
0.50 0.30
Mounting Considerations
Mount these devices with brown mark facing up. Units: mm * Line width should be designed to provide 50 impedance matching characteristics. With Matching Circuit 1.0 8.0 5.5 10 nH
* *
4.7 nH 0.5 pF
2.0
*
Matching circuits
JTI P/N for Matching Circuit: Inductor (4.7nH):L-07C4N7SV6T Inductor (10nH): L-07C10NJV6T Cap (0.5pF): 500R07S0R5BV4T 2.5
0.5 5.0
7.0
Johanson Technology, Inc. reserves the right to make design changes without notice. All sales are subject to Johanson Technology, Inc. terms and conditions.
www.johansontechnology.com
4001 Calle Tecate * Camarillo, CA 93012 * TEL 805.389.1166 FAX 805.389.1821 2008 Johanson Technology, Inc. All Rights Reserved
"High Frequency Ceramic Solutions"
915 MHz Antenna
Detail Specification: 02/20/09
P/N 0915AT43A0026
Page 2 of 3
Mounting Considerations
)
)
Test Board
)
40mm
) ) ) )
9.5mm 9.5mm 50 Feed Line 50 Feed Line
40mm
)
20mm
Antenna 20mm Ground 19mm Antenna No Ground
Return Loss (with matching)
0 -5
Ground
-10 -15 dB(S(1,1)) -20
)
m1 m2
-25 -30 -35 -40 -45 0.5 0.6 0.7 0.8 m3 0.9 freq, GHz 1.0
m1 freq=902.0MHz dB(S(1,1))=-11.217 m2 freq=928.0MHz dB(S(1,1))=-11.807 m3 freq=915.0MHz dB(S(1,1))=-43.257
1.1
1.2
1.3
Johanson Technology, Inc. reserves the right to make design changes without notice. All sales are subject to Johanson Technology, Inc. terms and conditions.
www.johansontechnology.com
4001 Calle Tecate * Camarillo, CA 93012 * TEL 805.389.1166 FAX 805.389.1821 2008 Johanson Technology, Inc. All Rights Reserved
"High Frequency Ceramic Solutions"
915 MHz Antenna
Detail Specification: 02/20/09
P/N 0915AT43A0026
Page 3 or 3
Typical Radiation Patterns
) ) )
)
)
)
)
XY-V/XY-H
Z
)
XY cut @915MHz Vertical Horizontal
180 90 Y 0 X 270 XY-cut scanning direction
XZ-V/XZ-H
Y 180
XZ cut @915MHz Vertical Horizontal
90 Z 0
X 270
XZ-cut scanning direction
)
YZ-V/YZ-H X 180 90
Z
YZ cut @915MHz Vertical Horizontal
Y 270 0
YZ-cut scanning direction
Johanson Technology, Inc. reserves the right to make design changes without notice. All sales are subject to Johanson Technology, Inc. terms and conditions.
www.johansontechnology.com
4001 Calle Tecate * Camarillo, CA 93012 * TEL 805.389.1166 FAX 805.389.1821 2008 Johanson Technology, Inc. All Rights Reserved

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