Specifications

ELLA-W1 Antenna trace designs
UBX-16016269 Page 8 of 9
locate, communicate, accelerate
5 Reference designs for antenna pin 2
This section describes the available designs for the antenna pin 2 of the ELLA-W1 modules. Note that only ELLA-
W133 and ELLA-W163 use antenna pin 2, for Bluetooth transmission.
Figure 6: Reference schematic for antenna pin 2
5.1 Internal antenna
The reference design with internal antenna uses the SMD Johanson Technology type 2450AT45A100 antenna
that is connected to the module RF-port via a coplanar micro-strip transmission line.
5.1.1 Bill of materials
Reference
designator
Description
Manufacturer
P/N
A2
Antenna CHIP 2.4-2.5GHz
Johanson Technology
2450AT45A100
C3
CAP, CER, 2.2pF, +/-0.1pF, C0G, 50V, SMD 0402
Johanson Technology
500R07S2R2BV4
C4
CAP, CER, 1.8pF, +/-0.1pF, C0G, 50V, SMD 0402
Johanson Technology
500R07S1R8BV4
L3
IND, Multilayer Ceramic, 3.9nH, +/-0.3nH, 300mA, SMD 0402
Johanson Technology
L-07C3N9SV6T
R9
0 Ω resistor, 0402
Generic
-
R10
Do not Assembly
-
-
J8
Do Not Assembly
-
-
5.1.2 Antenna characteristics
Parameter
Low band
Unit
Frequency Range
2.4 – 2.5
GHz
Peak Gain
2.2
dBi
VSWR
< 2:1
-
Polarisation
Linear
-