2.5GHz Chi
Antenna with No GND clearance re
uired
P/N 2500AT43A0100
Detail Specification: 10/28/2013
Page 1 of 5
No. Function
In mm 1
L ±± 2
W ±± 3
T ±± 4
a1 ±± 5
a2 ±± 6
b1 ±± 7
b2 ±± 8
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
ver 2.0
2013 Johanson Technology, Inc. All Rights Reserved
General Specifications
Terminal Configuration
Input PowerPart Number
Frequency Range
Peak Gain
Average Gain
VSWR
Impedance
Recommended Storage
Conditions
Reel Quanity
+5~+35°C, Humidity
45~75%RH
0.6 dBi typ. (YZ-total)
Mounting Considerations
2W max. (CW)
"High Frequency Ceramic Solutions"
0.157
0.20
4.00
1.00
0.039
0.020
2500AT43A0100
2450 - 2550
500pcs
-40 to +85°C
50
3.0 max.
-2.1 dBi typ. (XZ-total)
Operating Temperature
Mechanical Dimensions
0.20
0.079
1.000.008
0.033
0.039
0.850.008
0.008
0.008
0.50
Feeding Point
GND
GND
NC
NC
Note: It is recommended that the designer
leave available slots for a "pi" (or shunt-
series-shunt) network. The antenna
matching network values here are used
when antenna is mounted on Johanson's
evaluation board. The matching values on
clinet's PCB will be different, go to:
johansontechnology.com/tuning and see
how to obtain the new values. If you need
further help, contact our RF Applications
Eng Team at:
www.johansontechnology.com/en/ask-a-
technical-question.html
We peform layout review as well as antenna tuning and
characterization services. Go to page 2 for details.
GND
0.276 0.008 7.00 0.20
0.008 0.20
0.20
0.20
2.00 0.200.008
GND
GND
Units in mm
1
8765
432
T
b2
L
a1a1a1a1a1a1 a2
a1 a1 a1a1a1
b1
L
w
a2a1
*
0.3
0.5pF
Ground
50 Feed line
1.3
0.4
1.3
1.6
0.4
3.6
0.4
0.3
1.6
1.3
0.4
1.3
Antenna
4.7nH
0.5pF
Not
Connecte
d to GND
*Line width should be designed to match 50 characteristic impedance,
depending on PCB material and thickness
RF Via"stich" around
antenna clearance
and feed trace for
best radiation
