Antennas for Wireless M2M Applications 1
Product Specication10MD-0038-2-PS
®
m2m
Internal SMD FM Antenna Module
Product Specication
Part No. M10385
Mobile phones / Smart phones
Portable Media Players (PMPs)
Portable Navigation Devices (PNDs)
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Notebooks / Netbooks / Media Tablets
Digital Photo/Media Frames
FM transmitters for Music Players
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Features
Low cost single package Internal SMD FM
Antenna Module
Low 1.5mm height for thin devices
High performance
Easily interfaced to any FM receiver
Transmit + Receive through single line
Built-in ESD protection ±20kV (contact)
Easy to integrate
Intended for SMD mounting
Product Description
Antenova M2M’s M10385 is an internal FM antenna
module designed to address the growing market for
FM Radio functionality in mobile devices such as
mobile phones, PNDs, PMPs, Digital Photo Frames
and Media Tablets. Antenova’s innovative printed
circuit board (PCB) internal antenna module design
enables effective wireless FM radio transmit/receive
function without the need for an external headset
antenna or unsightly external retractable antenna.
The M10385 is an active antenna module consisting
of Antenova’s patent pending FM antenna with a
matching circuit and low noise amplier (LNA) in a
small 30 x 5mm package, with the convenience of a
standard surface mount device (SMD).
The M10385 is capable of transmitting/receiving FM
frequencies from 87.5 - 108 MHz and is intended
to be planar mounted at the edge of the host PCB
for minimum PCB space requirement. A minimum
clearance of 2mm between the antenna and the host
PCB ground plane is recommended for the best FM
signal reception.
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RF Antenna Module Block
Diagram
Package Style
30 x 5 x 1.5mm FM Antenna Module
Applications
Typical Mount
Top View - Antenna Side
Bottom View
Antennas for Wireless M2M Applications 2
Product Specication10MD-0038-2-PS
®
m2m
Internal SMD FM Antenna Module
Part No. M10385
Absolute Maximum Ratings
Symbol Parameter Min Max Unit
VCC Supply Voltage - 3.6 V
Vctl RTC LDO Voltage Supply - 3.6 V
RFin RF Input Power - 15 dBm
ESD Electrostatic Discharge Immunity -20 +20 kV
PIN Input Power (TX mode) - 15 dBm
* Exposure to absolute ratings may adversely affect reliability and may cause permanent damage.
Recommended Operating Conditions
Symbol Parameter Min Typ Max Unit
Ta Ambient Temperature -30 +25 +85 °C
VCC Supply Voltage 2.3 2.8 3.3 V
VCTL HMode Control Voltage High (RX) 1- 3.3 V
VCTL L Mode Control Voltage Low (RX) 0 - 0.5 V
PIN Input Power (TX mode) - - 8 dBm
DC Electrical Characteristics
Conditions: VCC = 2.8V, Ta = 25 °C
Symbol Parameter Typ Unit
ICC1 VCTL = 2.8V (RX mode) 5 mA
ICC2 VCTL = 0.0V (TX mode) 1 µA
ICTRL1 VCTL = 2.8V (RX mode) 40 µA
ICRTL2 VCTL = 0.0V (TX mode) 1 µA
RF Specications
Conditions: VCC = 2.8V, Ta = 25 °C
Symbol Parameter Typ Unit
ANTEFF* Antenna Efciency -27 dB
NF Noise Figure 1.5 dB
GLNA LNA Gain (RX mode) 13.5 dB
*Not including Mismatch loss
Antennas for Wireless M2M Applications 3
Product Specication10MD-0038-2-PS
®
m2m
Internal SMD FM Antenna Module
Part No. M10385
Electrical Performance
Condition: Tested on 100 x 40mm test board
Return Loss of RF I/O (TX mode)
Impedance of RF I/O (TX mode)
Antennas for Wireless M2M Applications 4
Product Specication10MD-0038-2-PS
®
m2m
Internal SMD FM Antenna Module
Part No. M10385
Impedance of RF I/O (RX mode)
Antennas for Wireless M2M Applications 5
Product Specication10MD-0038-2-PS
®
m2m
Internal SMD FM Antenna Module
Part No. M10385
Isolation
An example of Isolation between a GSM antenna mounted on a PCB with the FM module is shown in this
S21 plot. The transmission measurement was taken at pad M1 on the FM module. In this example the results
show that the FM module is immune from any effect of an active GSM antenna, maintaining at least -50dB
isolation across all bands.
Note: Measured Isolation will depend on details of the placement of the cellular antenna with respect to the
FM module.
Antennas for Wireless M2M Applications 6
Product Specication10MD-0038-2-PS
®
m2m
Internal SMD FM Antenna Module
Part No. M10385
Pin out Description
Pin Name I/O Description
1VCTL I
Control voltage to select operating mode. Pull high for
RX and pull low for TX
VCTL is LOW when left unconnected due to pull down
resistor on module
2,6,8 GND Ground connections
3 VCC I Power Supply
4RF I/O I/O RF input/output for connection to FM receiver/transmitter
chip
5 M1 I/O Pad to external matching component
7 M2 I/O Pad to external matching component
9, 10, 11, 12,
13, 14, 15, 16 Support Pads Floating pads for mechanical support and alignment
during reow
Recommended Application Schematic
The following schematic shows the recommended connection for the module.
Antennas for Wireless M2M Applications 7
Product Specication10MD-0038-2-PS
®
m2m
Internal SMD FM Antenna Module
Part No. M10385
Mechanical Drawings
Antenna Footprint
Notes: Units = mm
Land pattern for host PCB
Antennas for Wireless M2M Applications 8
Product Specication10MD-0038-2-PS
®
m2m
Internal SMD FM Antenna Module
Part No. M10385
Matching Circuit
The antenna requires a matching circuit that must be optimized for each customer’s product. The matching
circuit will require one component and the following pad layout should be designed into the device so the
correct circuit can be installed:
Example land pattern for module showing routing and position of matching component.shown below:
The module is externally matched with a single component:
Component needs to be High Q wire wound inductor
Size 0603
Value range 0 - 470nH
Note: The precise value for the matching circuit component will vary depending on the size of the PCB,
surrounding components and plastic case. The antenna should be measured before selecting suitable
matching components. Antenova M2M offers a matching service on request. Contact sales@antenova-m2m.
com for further information.
Matching may also be solved by performing an active listening test by tuning into FM broadcasts across the
band, and score the quality of the stations in a listening test. Testing different values of Inductor (0-470nH) and
increase or decrease the value according to the quality of reception. This is only a comparative test but can
give a very accurate guide to the tuning if performed repeatedly in the same test conditions.
Gerber les of the module footprint are available from Antenova M2M on request. Please contact sales@
antenova-m2m.com for further details.
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Antennas for Wireless M2M Applications 9
Product Specication10MD-0038-2-PS
®
m2m
Internal SMD FM Antenna Module
Part No. M10385
Typical FM Antenna Module Placement
The module must be placed to the edge of the host PCB with the ground plane removed from all layers
under the antenna portion of the module (22 x 7mm). The recommended placements for optimal system
performance are shown below for a 100 x 40mm standard reference board.
Notes: Units = mm
Antennas for Wireless M2M Applications 10
Product Specication10MD-0038-2-PS
®
m2m
Internal SMD FM Antenna Module
Part No. M10385
Reference Boards
The reference boards have been designed for evaluation purposes of FM TX/RX and they include a SMA
female connector. Reference board are available with a tuned module.
Reference boards are available for typical applications. Contact sales@antenova-m2m.com for further
information or to order a reference board.
Soldering
This antenna is suitable for lead free soldering. The reow prole should be adjusted to suit the PCBA, oven
and solder paste, while observing the following conditions:
Peak temperature: 260°C or below
Time at peak temperature : 10 seconds or less
Time at temperature of 220°C or higher : 60 seconds or less
Preheating time at 120 to 180°C : 120±30 seconds
Hazardous material regulation conformance
M10385 FM antenna module has been tested to conform to RoHS requirements, and a certicate of
conformance is available from Antenova. It is worth noting that the FR4 substrate also conforms to the IEC’s
denition of Halogen-free.
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M10385-U2 100 x 150 mm reference boardM10385-U1
40 x 100 mm
reference board
Antennas for Wireless M2M Applications 11
Product Specication 10MD-0038-2-PS
®
m2m
www.antenova-m2m.com
Corporate Headquarters
Antenova Ltd.
Far Field House
Albert Road
Stow-cum-Quy
Cambridge, CB25 9AR
UK
Tel: +44 (0) 1223 810600
Fax: +44 (0) 1223 810650
Email: sales@antenova-m2m.com
USA Headquarters
Antenova USA
Rogers Business Park
2541 Technology Drive, Suite 403
Elgin, IL 60124
USA
Tel: +1 (847) 551-9710
Fax: +1 (847) 551-9719
Email: sales@antenova-m2m.com
Asia Headquarters
Antenova Asia Ltd.
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® 2013 Antenova Ltd. All Rights Reserved. Antenova®, Antenova M2M,
RADIONOVA® 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 print.
Antenova does not warrant the accuracy or completeness of the information, text, graphics or
other items contained within these information. Antenova further assumes no responsibility for
the use of this information, and all such information shall be entirely at the user’s risk.
Release Date 05 February 2013