Antennas for Wireless M2M Applications
Product Specification SRF2W012-PS-1.2 Page 1
®
1. Features
Antenna for 2.4 – 2.5 GHz and 4.9 – 5.9 GHz applications: Wi-Fi
802.11a/b/g/j/n/ac
Maintains high performance within device: DFI (Designed For Integration)
1.13mm diameter RF cable with IPEX MHF connector
Self-Adhesive mounted
Quick integration minimizes design cycle
High performance
Available 3 standard cable lengths
2. Description
Dromus is intended for use with all Wi-Fi applications. A flexible antenna with cable
enables direct connection to the host PCB. Simple integration with plug and play
simplicity. This product specification shows the performance of the antenna to cover
a typical dual band Wi-Fi reception: 2.4-2.5/ 4.9-5.9GHz.
3. Applications
Access Points
Portable Devices
PC-cards
Game Consoles
Set-Top-Box
Network Devices
Wearable devices
MIMO Systems
Dromus Dual-band Wi-Fi Antenna
Part No. SRF2W012 flexiiANT ® Product Specification
Dromus
Part No. SRF2W012
Antennas for Wireless M2M Applications
Product Specification SRF2W012-PS.1.2 Page 2
4. Part Number
Dromus: SRF2W012-xxx
Note. -xxx refers to cable length option:
5. General Data
6. RF Characteristics
Part Number
Cable Length
SRF2W012-50
50mm
SRF2W012-100
100mm
SRF2W012-150
150mm
Product name
Part Number
Frequency
Polarization
Operating temperature
Environmental condition test
Impedance with matching
Weight
Antenna Assembly type
Dimensions (Antenna)
Cable length
Connection
2.4 – 2.5 GHz
4.9 – 5.9 GHz
Conditions
Peak gain
3.0dBi
4.0dBi
Average gain
-1.5dBi
-1.8dBi
Average efficiency
>60%
>60%
Maximum return loss
-14dB
-10dB
Maximum VSWR
1.5:1
1.8:1
All data measured in a loaded
condition adhered to a plastic
carrier free space.
Dromus
Part No. SRF2W012
Antennas for Wireless M2M Applications
Product Specification SRF2W012-PS.1.2 Page 3
7. RF Performance
7.1 Return Loss
7.2 VSWR
2300 2500 2700 2900 3100 3300 3500 3700 3900 4100 4300 4500 4700 4900 5100 5300 5500 5700 5900
- 3 5
- 3 0
- 2 5
- 2 0
- 1 5
- 1 0
-5
0
5
[M H z]
[dB] Atyune
1
2
3
M A RKE RS : M H z dB M H z dB
WLA N .S1 P - S1 1
1: 2401
2: 2495
- 1 8 .6 9
- 1 5 .5 1
3: 4900
4: 5900
- 1 8 .3 8
- 4 0 .0 8
2300 2500 2700 2900 3100 3300 3500 3700 3900 4100 4300 4500 4700 4900 5100 5300 5500 5700 5900
1
2
3
4
5
6
7
8
9
10
[M H z]
[] Atyune
123
4
M A R KE RS: M H z M H z
WLA N .S1 P - S1 1
1: 2401
2: 2495
1.2 6
1.4 0
3: 4900
4: 5900
1.2 7
1.0 2
Dromus
Part No. SRF2W012
Antennas for Wireless M2M Applications
Product Specification SRF2W012-PS.1.2 Page 4
7.3 Antenna patterns
7.3.1 2400 MHz – 2500 MHz
3D pattern at 2.45GHz
Drag to rotate pattern and PCB by using Adobe Reader
(Click to Activate)
Dromus
Part No. SRF2W012
Antennas for Wireless M2M Applications
Product Specification SRF2W012-PS.1.2 Page 5
7.3.2 4900 MHz – 5900 MHz
3D pattern at 5.45GHz
Drag to rotate pattern and PCB by using Adobe Reader
(Click to Activate)
Dromus
Part No. SRF2W012
Antennas for Wireless M2M Applications
Product Specification SRF2W012-PS.1.2 Page 6
8. Antenna Dimensions
8.1 Dimensions FPC section
All dimensions in mm
8.2 Dimensions assembled
L
W
T
Length
Width
Thickness
30.0 ±0.2 (mm)
6.0 ±0.2 (mm)
0.15 (mm) nominal
SRF2W012-50
SRF2W012-100
SRF2W012-150
L
L
L
51 ±2.0 (mm)
101 ±2.0 (mm)
151 ±2.0 (mm)
L
W
2.0
1.5
1.0
1.5
2 Holes = 1mm ø (diameter)
L
Dromus
Part No. SRF2W012
Antennas for Wireless M2M Applications
Product Specification SRF2W012-PS.1.2 Page 7
8.3 IPEX Connector
All dimensions in mm
8.4 Assembly
I-PEX
Material
Copper Alloy
Plating
Ag
Front
Side
Back
5.0
3.0
I-PEX Connector
1.13mm ø Cable
FPC
Dromus
Part No. SRF2W012
Antennas for Wireless M2M Applications
Product Specification SRF2W012-PS.1.2 Page 8
9. Electrical Interface
9.1 Host Interface
The host PCB requires the mating connector which is IPEX MHF (UFL) receptacle.
The location should be close to the chip/modules pin for the RF. Any feed from this
receptacle should be maintained at 50Ω impedance.
9.2 Transmission Line
All transmission lines should be designed to have a characteristic impedance of 50Ω.
• The length of the transmission lines should be kept to a minimum.
• Any other parts of the RF system like transceivers, power amplifiers, etc, should
also be designed to have an impedance of 50 Ω.
Once the material for the PCB has been chosen, (PCB thickness and dielectric
constant), a coplanar transmission line can easily be designed using any of the
commercial software packages for transmission line design. For the chosen PCB
thickness, copper thickness and substrate dielectric constant, the program will
calculate the appropriate transmission line width and gaps on either side of the feed.
A DC blocking capacitor should be placed in line to protect the RF front end.
10. Mechanical Fixing
The antenna uses 3M 468MP adhesive on the reverse side of the FPC. The antenna
has an easy access split line to peel off to reveal the adhesive side. It is designed for
a one time fix to a clean smooth surface.
FPC back side
Split line for
easy peel
Dromus
Part No. SRF2W012
Antennas for Wireless M2M Applications
Product Specification SRF2W012-PS.1.2 Page 9
10.0 Antenna Integration Guide
10.1 Placement
For placing the FPC antenna within a device, the host PCB size is not a factor like
PCB mounted antennas. However placement still needs to follow some basic rules,
as any antenna is sensitive to its environment.
Using six spatial directions shown below as a guide. The antenna FPC section
should try to maintain a minimum of three directions free from obstructions to be able
to operate effectively. The other directions will have obstacles in its path, these
directions still require a minimum clearance. These minimum clearances are further
defined in this section. The plastic case is not included in this, only metal
objects/components that will obstruct or come in close proximity to the antenna.
Six spatial directions relative to FPC
Example with 4 spatial directions clear
Battery
PCB
FPC
Dromus
Part No. SRF2W012
Antennas for Wireless M2M Applications
Product Specification SRF2W012-PS.1.2 Page 10
10.2 Orientation of FPC
The orientation of the FPC with respect to the host PCB should be defined
depending on the unit. The proximity of the GND will have an influence on the
antenna so the PCB location relative to the antenna should be considered.
The FPC will normally be placed in one of the three following options for orientation.
In each option a distance (d) is the critical dimension to consider. Below shows the
minimum value of (d) for each. Other obstructions may increase this dimension.
1) Vertical mounted
1) Co-planar to PCB
2) Planar to PCB (Same plane)
d ≥ 2mm
PCB
Cable +Connector
FPC
d ≥ 10mm
d ≥ 2mm
Dromus
Part No. SRF2W012
Antennas for Wireless M2M Applications
Product Specification SRF2W012-PS.1.2 Page 11
10.3 Device Integration example
An example of integration within a device is shown below. The device contains the
major components along with the device outer case. The FPC is shown adhered to
the inside of the device’s plastic housing. The cable routing is along the edge of the
PCB so as not to interfere with any other component. The length of the cable is
sufficient to allow ease of assembly when produced (SRF2W012-100).
The FPC was placed vertically relative to the PCB. The battery is conductive and is
kept the minimum recommended distance away from the FPC of 10mm. The FPC is
kept at maximised height above the PCB to ensure it is above the minimum
clearance of ≥2mm. This example shows the FPC 5mm above the PCB.
For vertical placement
relative to PCB d=5mm
(min ≥2mm)
Distance to battery follows
minimum spec for co-planar
placement d= 10mm (min
≥10mm)
Dromus
Part No. SRF2W012
Antennas for Wireless M2M Applications
Product Specification SRF2W012-PS.1.2 Page 12
11. Hazardous Material Regulation Conformance
The antenna has been tested to conform to RoHS requirements. A certificate of
conformance is available from Antenova M2M’s website.
12. Packaging
The antennas are stored in individual plastic (PE) bags, then stored within a second
bag of 10pcs.
Single antenna per bag 10 units per second bag (Labelled)
12.1 Optimal Storage Conditions
Temperature
-10ºC to 40ºC
Humidity
Less than 75% RH
Shelf life
18 Months
Storage place
Away from corrosive gas and direct sunlight
Packaging
Antennas should be stored in unopened sealed
manufacturer’s plastic packaging.
The shelf life of the antenna is 18 months, provided the bag of 10 pieces remains
factory- sealed.
Dromus
Part No. SRF2W012
Antennas for Wireless M2M Applications
Product Specification SRFW012-PS-1.2 Page 13
12.2 Label Information
50.00mm
Antenova Limited
Antenova Asia Ltd
4F, No 324, Sec 1, Nei-Hu Road
Nei-Hu District, Taipei 11493, Taiwan, ROC
info@antenova-m2m.com / www.antenova-m2m.com
Description: Dromus
Part number: SRF2W012
Quantity: 10
Date Code: YYWW
Manufacturer’s code number: flexiiANT®
60.00m
m
Dromus
Part No. SRF2W012
Antennas for Wireless M2M Applications
Product Specification SRF2W012-PS-1.2 Release date November 2015 Page 14
www.antenova-m2m.com
Corporate Headquarters
Antenova Limited
2nd Floor Titan Court
3 Bishop Square
Hatfield
AL10 9NA
UK
Tel: +44 1223 810600
Email: sales@antenova-m2m.com
North America Headquarters
Antenova Limited
100 Brush Creek Road, Suite 103
Santa Rosa
California 95404
USA
Tel: +1 (707) 890 5202
Email: sales@antenova-m2m.com
Asia Headquarters
Antenova Asia Limited
4F, No. 324, Sec. 1, Nei-Hu Road
Nei-Hu District
Taipei 11493
Taiwan, ROC
Tel: +886 (0) 2 8797 8630
Fax: +886 (0) 2 8797 6890
Email: sales@antenova-m2m.com
Copyright® Antenova Ltd. All Rights Reserved. Antenova ®, Antenova M2M ®, gigaNOVA ® the Antenova
product family names and the Antenova and Antenova M2M logos are trademarks and/or registered trademarks
of Antenova Ltd. Any other names and/or trademarks belong to their respective companies.
The materials provided herein are believed to be reliable and correct at the time of printing. Antenova does not
warrant the accuracy or completeness of the information, text, graphics or other items contained within this
information. Antenova further assumes no responsibility for the use of this information, and all such information
shall be entirely at the user’s risk.