2450AT42E010B Datasheet, PDF (3/4 Pages) Johanson Technology Inc. – 2.4 GHz Surface Mount

"High Frequency Ceramic Solutions"
2.4 GHz Surface Mount, Above Metal, Low Profile Mini Chip Antenna
This antenna must have metal underneath in order to function properly
Detail Specification: 10/17/2016
P/N 2450AT42E010B
Page 3 of 4
How To Choose The Correct Antenna Variant
Refer to the table below for substrate thickness and the corresponding antenna variation.
PCB Substrate Thickness
≤ 1.0mm
1.0mm - 2.0mm
≥ 2.0mm
Recommended JTI PN
2450AT42E0100
2450AT42E010B
2450AT42E010C
Typical Efficiency Values @ 2.44GHz for various scenarios for a 30x50mm PCB
The following efficiency values represent performance on a 30x50mm EVB like on page 2. Please note that antenna
efficiency varies widely with board layout, size and surroundings.
PCB
Substrate
Thickness
(H)
H = 0.12 mm
H = 0.7 mm
H = 1.5 mm
H = 2.5 mm
Simulated Antenna Efficiency(%) @ 2.44GHz
2450AT42E0100 2450AT42E010B 2450AT42E010C
1.95%
29.20%
23.30%
21.60%
1.02%
9.30%
41.90%
34.20%
0.93%
2.30%
13.80%
38.40%
We encourage you to use a relatively thick dielectric layer below antenna, as we have seen a direct
correlation between substrate thickness and antenna performance.
Note: "H" substrate thickness of <0.25mm (10mil) is not recommended. The component will still work and
radiate, just not optimally.
If you'd like the complete datasheet which includes detailed layout specs, tuning
techniques, and application notes for IoT/wearables, send us as message at:
www.johansontechnology.com/ask-a-question
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.
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