reliable connectivity for iot devices · global ism band landscape solving rf challenges with...
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![Page 1: Reliable Connectivity for IoT Devices · Global ISM band landscape Solving RF challenges with Robust Radio Design Congested ISM bands ... • Sub-GHz ISM band • Sub-GHz licensed](https://reader034.vdocuments.us/reader034/viewer/2022051815/603da91508c36914c24a2de9/html5/thumbnails/1.jpg)
MICHAEL DALTON
Product Marketing
Reliable Connectivity for IoT Devices
102/22/2017
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Agenda
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►IoT Connectivity Battery Powered IoT Applications
Connectivity Requirements
Global ISM band landscape
►Solving RF challenges with Robust Radio
Design Congested ISM bands
Range
Operating environment effects – temperature
changes
Component ageing effects
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Battery Powered IoT Applications
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Healthcare
Energy Industry 4.0
Smart City Smart Agriculture
Connected Building
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Broad Range of Application Requirements
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►Data requirements
►Number of connected nodes
►Geographic spacing of nodes
►Mission critical – How important is your data?
Mesh Star
• 2.4 GHz
• Sub-GHz ISM band
• Sub-GHz licensed bands
• Cellular bands
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Global ISM Bands
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169/433/868 MHz
315/915 MHz
433/915 MHz
315/915 MHz
426/429/920 MHz
865 MHz
2.4 GHz
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IoT Connectivity Challenges
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Congested ISM Bands
Seasonal VariationFederal
Communications
Commission
Compliance limits
1km
2km
4km
Long Range
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Congested ISM Bands
In-Band Interferers
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Machine Health Monitor Humidity Sensor
Noise Floor
ISM BandCellular Band
Access Point
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Congested ISM Bands
Adjacent Channel Rejection Spec (ACR)
►How to reject nearby interferers?
Accurate filtering and high quality receiver signal
chain design
►What is the datasheet specification for
measuring this?
Adjacent Channel Rejection (ACR)
*ADF7030-1 High Performance Transceiver
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ISM BandCellular Band
Noise Floor
-70dBm
-115dBm
ACR = 45dB
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Congested ISM Bands
Out of Band Interferers
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ISM BandCellular Band
Noise Floor
Machine Health Monitor
Access Point
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Congested ISM Bands
Blocking Spec
►How to reject out of band interferers?
Additional filtering and high performance phase
noise
►What is the datasheet specification for
measuring this?
Blocking
*ADF7030-1 High Performance Transceiver
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ISM BandCellular Band
Noise Floor
-25dBm
-115dBm
Blocking = 90dB at 10MHz offset
10MHz offset
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Congested ISM Bands
Blocking Spec
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ISM BandCellular Band
Noise Floor
-25dBm
-115dBm
Blocking = 90dB at 10MHz offset
10MHz offset
►Another indicator of good blocking
performance
Phase Noise
*ADF7030-1 High Performance Transceiver
-154dBc/Hz at 10MHz offset
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Congested ISM Bands
Real Life Scenario
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Access Point
High Performance Radio Receiver Design Critical for Link Robustness in presence of Interferers
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Long Range
Sensitivity
► Sensitivity
A measure of how low a signal a radio can receive
radio
As data rate decreases, weaker signals can be
detected
►Datasheet shown as Packet Error Rate (PER) or
Bit Error Rate (BER) level
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1km
2km
4km
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Long Range
Sensitivity stability over frequency error
►Temperature and ageing effects can cause
frequency error between transmitter and
receiver
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Ensure Sensitivity remains constant over define frequency error range
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Output Power Stability
Temperature effects
►PA circuits susceptible to temp changes
►Transmit Power can change with temperature
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Output Power Stability
Temperature effects
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1km
2km
4km
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Output Power Stability
Temperature effects
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Federal
Communications
Commission
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►Datasheet Spec
Ensure PA output power is stable over
temperature
Output Power Stability
Temperature effects
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Ensure radio is designed for stability in real life conditions
*ADF7030-1 High Performance Transceiver
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Conclusion
►Reliable connectivity will be key for mass adoption of low power connected
sensors
►Effects of environmental RF hazards can be resolved through radio
performance
Congested ISM Bands: ACR, Blocking
Range: Sensitivity Stability
Temperature effects: PA Stability
►Analog Devices ADF7030-1 provides robust connectivity through
outstanding RF design
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