Tel +49 6102 799 128 Page 1 Fax +49 6102 799 28 199 [email protected]Round Solutions GmbH & Co KG www.roundsolutions.com Embedded Antenna Application Note George Negreanu Part II, 09-12-2010 www.linkedin.com/in/gsmgps GSM GPRS 3G Embedded Antenna Application Note Applications: Multiband SMD antenna on 24mm x 5.5mm x 4.4mm only Embedded GSM/UTMS Antenna ● M2M ● Automotive ● Automatic Meter Reading ● Healthcare ● Point of Sale ● Tracking George Negreanu @ Round Solutions GmbH & Co. KG Hans-Boeckler-Str. 16 63263 Neu-Isenburg Tel: +49 (0)6102 799 28 0 Fax: +49 (0)6102 799 28 199 Web: http://www.roundsolutions.com LinkedIn: http://www.linkedin.com/in/gsmgps Blog: http://gsmantenna.wordpress.com/ Tweeter: http://twitter.com/George_Negreanu If you need further informations or support please feel free to email me. Antenna tuning and PCB optimization service available.
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GPRS UMTS Embedded Antenna Application Note Part II
Ceramic Embedded multiband cellular antenna builds on the success of several SMD tri-band antennas, by extending functionality to cover all worldwide cellular bands between 800 MHz and 2200 MHz – GSM, CDMA, DCS, PCS, WCDMA, UMTS, HSPA, GPRS and EDGE.
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Tel +49 6102 799 128 Page 1 Fax +49 6102 799 28 199 [email protected] Round Solutions GmbH & Co KG www.roundsolutions.com
Embedded Antenna Application Note George NegreanuPart II, 09-12-2010 www.linkedin.com/in/gsmgps
GSM GPRS 3G Embedded Antenna Application Note
Applications:
Multiband SMD antenna on 24mm x 5.5mm x 4.4mm only Embedded GSM/UTMS Antenna
● M2M● Automotive● Automatic Meter Reading● Healthcare● Point of Sale● Tracking
Tel +49 6102 799 128 Page 2 Fax +49 6102 799 28 199 [email protected] Round Solutions GmbH & Co KG www.roundsolutions.com
Embedded Antenna Application Note George NegreanuPart II, 09-12-2010 www.linkedin.com/in/gsmgps
Table of Contents
1 Introduction 3
2 Mechanical Specification 4
3 Electrical Specification 4
4 Measurement 5
4.1 Electrical Characteristics 5
5 Radiation Characteristics 6
6 Gain Pattern Measurement Data 7
7 Soldering Recommendations 9
7.1 Land Pattern 9
7.2 Placing of antenna 9
8 Soldering Profile 11
9 Packing 11
10 Development Process Proposal 12
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1 Introduction
Multiband SMD antenna on 24 mm x 5.5 mm x 4.4 mm only
The ANT-GXE474 multiband cellular antenna builds on the success of several SMD tri-band antennas, by extending functionality to cover all worldwide cellular bands between 800 MHz and 2200 MHz – GSM, CDMA, DCS, PCS, WCDMA, UMTS, HSPA, GPRS and EDGE.
This IFA antenna is particularly suited for mounting on the edge of a PCB. It measures 24 mm x 5.5 mm x 4.4 mm and is delivered on tape and reel for efficient and accurate assembly.
The ANT-GXE474 is also available as mirrored design (ANT-GXE474M) if the standard design will not fulfil layout/alignment requirements.
If tuning is required it can be tuned for the device environment with no need for new tooling. The antenna is robust enough to meet all temperature and mechanical specifications required for automotive environments.
Typical applications include automotive, remote monitoring, M2M, telematics, telemedicine, AVL, utility metering, mobile devices, point-of-sale, navigation, location based services and communication products.
Application Note based on antenna ANT-GXE474 GSM GPRS and 3G
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Tuning by changed ground plane / matching circuit as option
These values are measured on the matched reference test board.
2 Mechanical specification
Electrode SilverDimensions in mm (L x W x H) 24.0 x 5.5 x 4.4Operating Temperature -35 ~ +85
Unit: mm Tolerance 0.15 mm
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4.1 Electrical CharacteristicAntenna matching on the reference test board S11(VSWR) Quad Band (GSM850, DCS, PCS, UMTS)
4 MeasurementSet for measurement with test board version
Board size: 114x45mmAntenna Radiation the coordinate system[X axis: the axis of rotation]
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5 Radiation CharacteristicsMeasurement setup, 6 m x 3 m x 3 m Anechoic Chamber, Matching on the standard test board (114 mm x 45 mm) ,Temperature 25 ºC / Humidity 50~55%
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6 Gain pattern measurement data
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Tel +49 6102 799 128 Page 9 Fax +49 6102 799 28 199 [email protected] Round Solutions GmbH & Co KG www.roundsolutions.com
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7 Soldering recommendations7.1 Soldering Land Pattern
A 25B 5.5C 2.3D 20.4E 1.8F 1.9
7.2 Placing of antenna
Thickness(mm)
impedance(ohm)Area1 Area2
0.8 66.89 44.561.0 65.01 50.011.6 61.42 60.49
Dimensions of PCB tracks are calculated on
PCB with FR4 1mm. If you use other thickness of FR4 then the impedance of the PCB tracks will be changed and mismatched.The drawing above shows a 4 component matching ciruit. For optimal performance a 5-components matching circuit is recommended:
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