Transcript
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

MICHAEL DALTON

Product Marketing

Reliable Connectivity for IoT Devices

102/22/2017

Page 2: 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

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

Page 3: 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

Battery Powered IoT Applications

3

Healthcare

Energy Industry 4.0

Smart City Smart Agriculture

Connected Building

Page 4: 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

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

Page 5: 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

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

Page 6: 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

IoT Connectivity Challenges

6

Congested ISM Bands

Seasonal VariationFederal

Communications

Commission

Compliance limits

1km

2km

4km

Long Range

Page 7: 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

Congested ISM Bands

In-Band Interferers

7

Machine Health Monitor Humidity Sensor

Noise Floor

ISM BandCellular Band

Access Point

Page 8: 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

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

Page 9: 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

Congested ISM Bands

Out of Band Interferers

9

ISM BandCellular Band

Noise Floor

Machine Health Monitor

Access Point

Page 10: 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

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

Page 11: 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

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

Page 12: 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

Congested ISM Bands

Real Life Scenario

12

Access Point

High Performance Radio Receiver Design Critical for Link Robustness in presence of Interferers

Page 13: 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

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

13

1km

2km

4km

Page 14: 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

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

Page 15: 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

Output Power Stability

Temperature effects

►PA circuits susceptible to temp changes

►Transmit Power can change with temperature

15

Page 16: 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

Output Power Stability

Temperature effects

16

1km

2km

4km

Page 17: 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

Output Power Stability

Temperature effects

17

Federal

Communications

Commission

Page 18: 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

►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

Page 19: 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

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

19

Page 20: 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

Thank You For Watching!

View Additional Webcasts at

www.analog.com/Webcasts

Ask Questions on EngineerZone

ez.analog.com/Webcasts

Search for ADI Parts on Avnet

www.avnet.com

20


Top Related