Tuneable PCB Antenna (850/1900MHz)

WA_ENG_GEN_APN_012-002

Author: Sierra Wireless Date: March 31, 2010

APN Content Level BASIC INTERMEDIATE ADVANCED Confidentiality Public Private

Software

Compatibility* FW:

5.x 6.x

7.x

Software

Suite: N/A

Plug-

Ins:

TCP/IP N/A Security N/A Compiler Used:

N/A

Reference Hardware

No

Internet N/A LUA N/A Reference Software

No C-GPS N/A RTE : N/A

* refer to software compatibility matrix section for more detail

Hardware

Compatibility

AirPrime Q Series : Q2686 Q2687 Q26Extreme Q26Elite

AirPrime WMP Series : WMP50 WMP100 WMP120 WMP150

AirPrime WS Series : WISMO218 WISMO228

AirPrime AR Series AR3550 AR5550 AR8550

AirLink FXT Series : Fastrack Xtend GPRS Fastrack Xtend EDGE Fastrack Xtend HSPA Fastrack Xtend CDMA

Legacy products (GSM): Q24Classic Q24Plus Q24Extended Q24Auto

Fastrack Supreme Q52Omni Q64

Legacy products (CDMA): Q2438F Q2438R

WA_ENG_GEN_APN_012 Rev 002 March 31, 2010 1

1 Version

www.sierrawireless.com

2 Introduction

3 Application Note Description

4 Features Supported

5 Application Environment

6 Geometry

Tuneable PCB Antenna (850/1900MHz)

WA_ENG_GEN_APN_012-002

WA_ENG_GEN_APN_012 Rev 002 March 31, 2010 2

7 Test Result

Directivity

Orientation

Max. Antenna Gain (dBi)

GSM850, channel 190 PCS, channel 661

in azimuth -0.7 0.5

in elevation front 0.6 0.6

in elevation side -0.3 1.9

Caution

Tuneable PCB Antenna (850/1900MHz)

WA_ENG_GEN_APN_012-002

WA_ENG_GEN_APN_012 Rev 002 March 31, 2010 3

Performance on Return Loss, S11

Note: The measurement above is based on the original PCB antenna without any tuning.

Tuning

Tuneable PCB Antenna (850/1900MHz)

WA_ENG_GEN_APN_012-002

WA_ENG_GEN_APN_012 Rev 002 March 31, 2010 4

8 Environmental Impact

Tuneable PCB Antenna (850/1900MHz)

WA_ENG_GEN_APN_012-002

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Note: The environment provided by the customer application to the “Tuneable PCB Antenna” (mainly items “a” to “d” described at the beginning of this section) may introduce very unpredictable effects to the “Tuneable PCB Antenna” in a way that Sierra Wireless cannot guarantee the radiated performance of a new product using this application note. In particular, following parameters may be impacted: Frequency bandwidth, Impedance, Radiation pattern, Transmitter harmonics and SAR (Special Absorption Rate)

Environmental Change

Effect

GSM 850 PCS

Limit when Effect Insignificant Operating

Band Return Loss

Operating Band

Return Loss

PCB Substrate

Thickness --

Metallic Plate Distance

Upper 8 mm for Aluminium

12 mm for Copper

Left

15 mm for Aluminium

20 mm for Copper

Bottom

20 mm for Aluminium

30 mm for Copper

Plastic Distance

Upper -- 0 mm

Left -- 0 mm

Bottom Slightly 3 mm

Top Slightly Slightly 2 mm

Grounding Width

Right No conclusion

--

Left degraded --

Shielding Distance

C* 7.0 mm

B* Slightly 8.0 mm

Right 7.0mm +

Lower 8.0 mm --

Just out of restricted area of internal antenna

Legend:

:Increase/Better

:Decrease/Worse

Tuneable PCB Antenna (850/1900MHz)

WA_ENG_GEN_APN_012-002

WA_ENG_GEN_APN_012 Rev 002 March 31, 2010 6

:Shift left

:Shift Right

:Insignificant change

*B, C:Distance refers to figure shown in section 7 Test Result.

9 Antenna Placement

10 Comparison of European and US GSM Band Antenna Application

11 Reference Hardware

12 Package Deliverables

Filename Description

WA_ENG_GEN_APN_012-002.zip Tuneable PCB Antenna (850/1900MHz)

Documentation

Tuneable PCB Antenna (850/1900MHz)

WA_ENG_GEN_APN_012-002

WA_ENG_GEN_APN_012 Rev 002 March 31, 2010 7

Filename Description

Tuneable_PCB_Antenna_850_and_1900MHz-Rev002.pdf Tuneable PCB Antenna (850/1900MHz)

13 Support

14 Document History

Version Date History

001 November 23, 2005 Creation

002 March 31, 2010 Reformatted to the rebranded SWI template.

15 Legal Notice Important Notice

Safety and Hazards

Note: Some airlines may permit the use of cellular phones while the aircraft is on the ground and the door is open. Sierra Wireless modems may be used at this time.

’s control

Limitations of Liability

“as is”. Sierra Wireless makes no warranties of any kind, either expressed or implied, including any implied warranties of

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7,287,162 D442,170 D459,303 D599,256 D560,911

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