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"High Frequency Ceramic Solutions"
1.905 GHz Antenna
Detail Specification: 04/10/10
P/N 1905AT45A0050
Page 1 of 3 Recommended application: DECT
General Specifications
Part Number Frequency Range Peak Gain Average Gain Return Loss 1905AT45A0050 1880 - 1930MHz 0.5 dBi typ (XZ-Total) -1.1 dBi typ. (XZ-Total) 9.5 dB min. Input Power Impedance Reel Quanity Operating Temperature Storage Temperature 2W max. 50 1,000 -40 to +85C +5 to +35C, Humidity: 45-75%RH, 12 mos. Max Terminal Configuration
No. 1 2
Packaging Style P/N Suffix Termination Style
Bulk T&R 100% Tin Tin / Lead
Suffix = S Suffix = E Suffix = None
Eg. 1905AT45A0050S Eg. 1905AT45A0050E Eg. 1905AT45A0050(E or S)
Function Feeding Point NC
Please consult Factory
Mechanical Dimensions
In L W T a 0.374 0.008 0.079 0.008 0.047 +.004/-.008 0.020 0.012 mm 9.50 0.20 2.00 0.20 1.20 +0.1/-0.2 0.50 0.30
L W a T
1
2
Mounting Considerations
Mount these devices with brown mark facing up. Units: mm * Line width should be designed to provide 50 impedance, depending on PCB material and thickness. 2.7nH GND 7
*
3.3nH
1.3
8.5
GND 2.0
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 2010 Johanson Technology, Inc. All Rights Reserved
Preliminary
"High Frequency Ceramic Solutions"
P/N 1905AT45A0050
Page 2 of 3
1.905 GHz Antenna
Detail Specification: 04/10/10
Typical Electrical Characteristics (T=25oC)
50 Feed Line
) )
Test Board
)
)
)
40mm
7mm
)
)
)
20mm Antenna
Return Loss
Ground
19mm
No Ground
a) With matching circuits for 1880~1930MHz
)
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 2010 Johanson Technology, Inc. All Rights Reserved
Preliminary
"High Frequency Ceramic Solutions"
P/N 1905AT45A0050
Page 3 of 3
1.905 GHz Antenna
Detail Specification: 04/10/10
Typical Radiation Patterns
) ) )
)
)
)
)
XY-V/XY-H
Z
)
XY cut @1.905GHz Vertical Horizontal
180 90 Y 0 X 270 XY-cut scanning direction
XZ-V/XZ-H
Y 180
XZ cut @1.905GHz Vertical Horizontal
90 Z 0
X 270
XZ-cut scanning direction
)
YZ-V/YZ-H X 180 90
Z
YZ cut @1.905GHz 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 2010 Johanson Technology, Inc. All Rights Reserved

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