MICHAEL DALTON
Product Marketing
Reliable Connectivity for IoT Devices
102/22/2017
Agenda
2
►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
Battery Powered IoT Applications
3
Healthcare
Energy Industry 4.0
Smart City Smart Agriculture
Connected Building
Broad Range of Application Requirements
4
►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
Global ISM Bands
5
169/433/868 MHz
315/915 MHz
433/915 MHz
315/915 MHz
426/429/920 MHz
865 MHz
2.4 GHz
IoT Connectivity Challenges
6
Congested ISM Bands
Seasonal VariationFederal
Communications
Commission
Compliance limits
1km
2km
4km
Long Range
Congested ISM Bands
In-Band Interferers
7
Machine Health Monitor Humidity Sensor
Noise Floor
ISM BandCellular Band
Access Point
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
8
ISM BandCellular Band
Noise Floor
-70dBm
-115dBm
ACR = 45dB
Congested ISM Bands
Out of Band Interferers
9
ISM BandCellular Band
Noise Floor
Machine Health Monitor
Access Point
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
10
ISM BandCellular Band
Noise Floor
-25dBm
-115dBm
Blocking = 90dB at 10MHz offset
10MHz offset
Congested ISM Bands
Blocking Spec
11
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
Congested ISM Bands
Real Life Scenario
12
Access Point
High Performance Radio Receiver Design Critical for Link Robustness in presence of Interferers
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
Long Range
Sensitivity stability over frequency error
►Temperature and ageing effects can cause
frequency error between transmitter and
receiver
14
Ensure Sensitivity remains constant over define frequency error range
Output Power Stability
Temperature effects
►PA circuits susceptible to temp changes
►Transmit Power can change with temperature
15
Output Power Stability
Temperature effects
16
1km
2km
4km
Output Power Stability
Temperature effects
17
Federal
Communications
Commission
►Datasheet Spec
Ensure PA output power is stable over
temperature
Output Power Stability
Temperature effects
18
Ensure radio is designed for stability in real life conditions
*ADF7030-1 High Performance Transceiver
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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