"High Frequency Ceramic Solutions"
915 MHz Antenna
Detail Specification: 4/10/2013
P/N 0915AT43A0026
Page 2 of 3
Recommended Application ISM
Mounting Considerations II
9.5mm
40mm
50Ω Feed Line
(make sure
proper
calculation are
applied to
GND Plane
Johanson Test Board
(orderable) p/n:
0915AT43A0026-EB1SMA
achieve this.
Yellow area-
complete GND
and layer
GND Plane
clearance free
of metal below
and above.
19mm (can be shortened as needed,
won't influence performance)
**Note 2: It is recommended that the designer leave available slots for a "pi" (or shunt-
series-shunt) network. The antenna matching network values above are used when antenna
is mounted on Johanson's evaluation board. The matching values on client’s PCB will be
different. Go to: http://johansontechnology.com/tuning and see how to obtain the new
values. If you need further help, contact our RF Applications Eng. Team at:
Return Loss (with matching)
0
-5
m1
m1
m2
freq=902.0MHz
-10
-15
-20
-25
-30
-35
-40
-45
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
m3
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
freq, GHz
Johanson Technology, Inc. reserves the right to make design changes without notice. Please confirm the specifications
and delivery conditions when placing your order. 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
2013 Johanson Technology, Inc. All Rights Reserved
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