Electronic Communications Systems CTAB Major Strength Specify, design, construct, troubleshoot, and...
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Electronic Communications Systems
CTAB Major Strength
Specify, design, construct, troubleshoot, and characterize communications systems.
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Electronic Communications Systems
Ian Benjamin – Instructor Telecom Intro – term 4Telecom Apps – term 5Wireless/Radio Fundamentals – term 5Wireless/ Radio Systems – term 6
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Electronic Communications Systems
Rejean Barriault - Instructor
Fiber Optic Communications Term 5
Don Michaelsen - InstructorData Communications Term 5
Advanced Datacomm Term 6
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Ian Benjamin
RF / Wireless Experience:Nav Canada 23 yrs (Aircraft Radio
Navigation / Communication / Telecom)Radio Amateur / Radio Repair 30+ yrsMaintained VHF-FM repeater 10 yrs
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Intro to Telecom – term 4
Course Outcome
To apply the principles involved in configuring a communications system.
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Intro to Telecom (90 hr)
Major ContentTime / Frequency Domain Signals, FDM
Fourier Transform, FFT, Spectrum Analysis
High frequency properties & construction
Linear Modulation – AM / SSB / FM /PM
Modulator / Demod / Mixer / Amp.
Transmitter / Receiver / Noise
Oscillators and Synthesizers – PLL, DDS
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Intro to Telecom
Lab EquipmentSpectrum Analyzer, FFT scope
Freq. Selective Voltmeter
Agilent RF Generator
Function Generator Modulation
Lab Volt Telecom Modules
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Telecom Applications –term 5
Course Outcome
Use basic test equipment to analyze the performance of telephony and CATV transmission systems, both analog and digital.
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Telecom Applications (45 hrs)
Major ContentSampling, Aliasing, Quantization
Digital Modulation – PCM, FSK, PSK, QAM
Telephony – Local Loop, CO, Mux, ADSL
Digital Signal Hierarchy, SONET
Cable TV – Analog & Digital Video, Headend, Distribution, DOCSIS Modem, Return System
Convergence of Services and Carriers.
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What is Radio/Wireless?
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What is Radio / Wireless?
AM / FM / TV Broadcasting
Land Mobile
Cellular Phone / Data
Satellite / Microwave / Radar
Wireless LAN / MAN / WAN
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What is Radio Frequency (RF)?One definition is any frequency above 50kHz
Systems listed on previous slide obvious applications
Less obvious, much more prevalent
Digital and Wired data – ADSL, LAN, USB
Switch mode power supply radiation
Starting to see RF behavior in Power Systems like motor drives – standing waves on “60Hz” wiring
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Wireless Fundamentals – term 5
Primary Course OutcomeTo solve fundamental theoretical problems and use
test equipment to perform fundamental practical measurements of radio systems involving antennas, transmission lines, and EM waves.
Secondary OutcomeTo enable students who work in non-radio related
workplace to apply RF principles in their work.
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Wireless Fundamentals (135 hrs)
Major Content areasApplied EM Physics Intro
Transmission Lines
Propagation
Antennas
Microwave
Real World Radio
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Wireless FundamentalsTransmission Lines
Why does wire act as transmission line?Pulse and Sine responseStanding wave RatioMatching and Smith ChartsMeasurements – Wattmeter, Slotted Line, Time
domain reflectometer (TDR)Line fault location using TDR (major non-radio
application)New Content – Anritsu Site Master FDR test set.
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Wireless Fundamentals
PropagationFree space, line of sight, plane earth, ionospheric
EIRP
Received Signal Strength Prediction
RF Channel Characteristics
Multipath Fading and Bandwidth Effects
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Wireless Fundamentals
AntennasBasic definitions
Characteristics
Radiation patterns, pattern formation
Adaptive Antennas
Selection
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Wireless Fundamentals
MicrowavesWaveguides
Passive components
Active Components
Radar
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Wireless Fundamentals
Real World Radio Transmitter Spectral Purity
Receiver Spurious Response
Intermodulation , Desensitization
Duplexers and Multicouplers
EMI / EMC (useful in non-radio workplace)
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Wireless Fundamentals
QUESTIONS?
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Wireless / Radio Systems – term 6
Course OutcomeUse fundamental system concepts, design tradeoffs, and block diagram architecture to plan, manage and troubleshoot wireless and radio systems at an entry level.
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Wireless/Radio Systems (45 Hours)
Major ContentMultiplexing/Multiple Access
DSP overview
802.11 Wireless LAN / Bridge
Terrestrial Microwave
Satellites
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Wireless / Radio Systems
Multiplexing / Multiple accessTDMA – sync / async
Channel Model – Delay Spread
FDMA / OFDMA
CDMA
Spatial Multiple Access - MIMO, 802.11n
Collisions, Hidden/Visible Nodes
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Wireless / Radio Systems
Digital Signal Processing (DSP)Functional Concepts, no Math or Programming
Enabling technology
Signal Generation / Detection
Adaptive Filter / Equalization
Voice Compression – Vocoder
ADSL, OFDMA examples
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Wireless / Radio Systems
Terrestrial Microwave ApplicationsDigital vs Analog
Repeaters
Modulation
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Wireless / Radio Systems
SatellitesOrbits – low, medium, geostationary
System characteristics
Examples – Bent Pipe Transponder, Direct Broadcast TV, VSAT
GPS Architecture, Signals, Applications
Differential GPS, WAAS
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Wireless / Radio Systems
802.11 Wireless LAN / BridgeSystem Architecture / ProtocolsTechnologist level actions:
Antenna application and selectionRF channel / Coverage zones overlap and self
interferenceRTS/CTS, fragmentation thresholds and
performance tuning
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Wireless / Radio Systems
QUESTIONS?
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EQUIPMENT DONATIONS
Defective components, assemblies,
Antennas
Test Equipment