M10478 Datasheet, PDF (16/30 Pages) List of Unclassifed Manufacturers – GPS RADIONOVA® RF Antenna Module

®
m2m
GPS RADIONOVA^® RF Antenna Module
Part No. M10478
Type of Matching Components
• Capacitors:
• Use 0402, COG components
• Inductors:
• High-Q, wire wound inductors in 0402 size are recommended for maximum performance,
e.g. Murata LQW15 series
• Good quality multi-layer type inductors (e.g. Murata LQG15 series) can also be used as a
lower cost alternative
Matching Procedure
The types and values of the matching components must be chosen so that the impedance seen by port
ANT_IN (PIN4) is as close as possible as 50Ω. Although it is a relatively simple operation, it requires some
RF skills and a VNA (Vector Network Analyzer). Please contact an Antenova M2M FAE to get support on
defining the optimal matching for your specific device.
External Antenna Support
A low cost external circuit can be used to provide external antenna support. Please contact Antenova for more
information, and example circuit.
PCB Matching Circuit Layout
The layout of the external matching circuit should be done using the following guidlines:
• Minimize the length of the tracks connecting the ANT_OUT and ANT_IN pads to the matching
• Minimize the length of the tracks between the components
• Use a solid groundplane under the matching circuit area
• Absolutely avoid routing any track under the matching circuit area
• Connect the top ground layer with the ground layer underneath using several vias
Layout drawings (Gerber or other format) are available from Antenova. Please contact your local FAE.
Matching Circuit
Example of external matching circuit layout
Antennas for Wireless M2M Applications
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Product Specification 12MD-0050-2-PS