GoPro CHDHE301 Digital HD Camera User Manual Antenna Specification

GoPro, Inc. Digital HD Camera Antenna Specification

Contents

Antenna Specification

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HD3 Antenna Design
Amphenol 2012/08/03
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Revision History
NA2011/10/14First dummy evaluation A
NA2011/10/21
WIFI module in battery side with cable connect
to antenna evaluation
B
NA2011/10/24Front Cover is all metalC
NA2011/10/25
Different WIFI module position at front metal
cover fixture
D
NA2011/10/26Front metal cover comparisonE
NA2011/10/27With/ without metal column of lens F
NA2011/10/28Radiation pattern evaluationG
NA2011/11/0311/2 3D drawing antenna evaluationH
NA2011/11/0811/7 3D drawing antenna evaluationI
NA2011/11/10Increase PCB area evaluationJ
NA2011/11/11
11/7 3D drawing improve antenna radiation
pattern and efficiency evaluation
K
2011/11/18
Date
NAUse real battery to evaluateL
Drawing NO.Destitution Revision
3
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Revision History
NA2012/02/15
With/without water housing antenna
performance
V
NA2012/02/10Modify EVT unit to check antenna performanceU
NA2011/11/22
Add PCB area close to the feed point in main
board
M
NA2012/01/20Base on 1/17 mockup to evaluateN
NA2012/02/03Evaluate antenna base on EVT 1 deviceO
NA2012/02/03
Evaluate antenna base on Chicony support
grounding position
P
NA2012/02/04
Find grounding position to increase antenna
performance-1
Q
NA2012/02/06
Find grounding position to increase antenna
performance-2
R
NA2012/02/07
Battery without connect metal plate and real
board antenna evaluation
S
NA2012/02/10Used TCL and BYD battery to evaluate antennaT
Date Drawing NO.Destitution Revision
4
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Revision History
CY5324-12-001-C-FA002012/06/04Base on 4/25 EVT3 device with water housing Y
CY5324-12-001-C-FA002012/06/04Base on 4/25 EVT3 device to evaluate antenna X
2012/08/03
2012/07/04
2012/03/09
Date
CY5324-12-001-C-FA00Base on DVT1 unit to evaluate antennaZ
C-5324-12-001-C-TB00Base on 3/9 EVT2 device to evaluate antenna W
CY5324-12-001-C-FB00
Base on PVT1 unit to measure the antenna
performance
AA
Drawing NO.Destitution Revision
5
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Outline
• Test equipment introduction
• Antenna Placement
• Antenna Performance
• Conclusions
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Test equipment introduction
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Configuration of Satimo Stargate 64
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Gain Measurement Accuracy of Satimo Stargate 64
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Satimo Stargate 64 coordinate system definitions
•+Z
•+X
•+Y
•Probe 1 •Probe 63
•Φ=90°
•θ=90°
•θ=0°
•Φ=180°
•θ=90°
•θ=180°
•AzimuthΦ
•Elevationθ
•Cutθ=-90°
•CutΦ=0°
•CutΦ=90°
•Cut Ø=90
•Probe 49
•Φ=0°
•θ=90°
•Probe 32
•Probe 15
ZY
X
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N5230A PNA-L
Microwave Network Analyzer
11
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Antenna Placement
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Base on 7/30 PVT1 unit
Front View
Back View
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Antenna Performance
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1.381.231.53VSWR
250024502400Frequency (MHz)
Sporton test result
2400
46.28
-3.35
2450 50.45 -2.97
2500
51.34
-2.90
3D Gain (dB)
WIFI
Band Frequency (MHz) Efficiency (%)
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•3D Pattern
Sporton test result
X Y
Z
X
Y
Z
X Y
Z
X
Y
Z
Frequency (MHz) 2400 2450 2500
Peak Gain (dB) 1.41 1.85 2.18
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Conclusions
1. The antenna efficiency had 46~51% base on 7/30 PVT1 unit.
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