Post on 13-Jan-2016
transcript
Principles of Broadcast Technologies
Lesson 1
Bellevue Community College
Bob Young, Instructor
1a. Electricity
• Voltage
• Current
• Resistance
• Power
• Formulas
1b. Electricity
• Voltmeter
• Ammeter
• Ohmmeter
• Multimeter
• Wattmeter
2a. Components
• Resistor
• Capacitor
• Inductor
• Diode (P-N junctions)
2b. Components
• Resonant (LC) Circuits
• Regenerative Feedback
• Sine Wave
• Phase Relationships
3a. Radio Wave / RF Energy
• FCC Frequency Allocations
• Radiation
• Propagation
• Path Loss (distance factors)
• Path Loss (environmental factors)
3b. Radio Wave / RF Energy
• Fading (multipath)
• Fading (Rayleigh)
• Fresnel Zone
• Wavelength
• Diversity Receivers
4. Decibels• Power
• Voltage
• RF Applications
• Audio Applications
5a. Modulation
• Carrier (definition)
• Information (definition)
• Analog Modulation
• Amplitude Modulation (AM)
• Frequency Modulation (FM)
• Pulse Modulation (PM) (ICW)
5b. Amplitude Modulation
5c. Modulation
• Digital Modulation• Frequency Shift Keying (FSK)
• Phase Shift Keying (PSK)• Amplitude Shift Keying (ASK)
6. Transmitter
• Audio Processor
• Modulator
• RF Amplifier
7a. Receiver
• RF Amplifier (terminology note: misuse of term, “pre-amplifier”)
• Demodulator (Detector, Discriminator)
• Audio Processor
• Pre-emphasis and De-emphasis
7b. AM Receiver
8a. Interference
• Types of Interference
• Co-channel
• Adjacent Channel
• Intermodulation
8b. Interference
• Receiver Solutions to Interference
• Superheterodyne Receivers
• Image Frequency
• Dual Conversion Superheterodyne Receivers
8c. Interference
• Cavity and Filter Solutions to Interference• Bandpass Cavities• High Pass Filters• Low Pass Filters• Block Filters• Notch Reject Filters• LC Filters• Crystal Filters
9. Antennas
• Types
• Polarization
• Bandwidth
• Gain
10. Transmission Line
• Types
• Loss Characteristics
• Bending Radius
• Pressurized Transmission Line
10a. Other Devices
• Transmitter Combiner
• Receiver Multicoupler
• Splitter
• Duplexer
• Leaky Coax
• Bi-directional Amplifier (BDA)
• Isolator
11a. Applications & Principles
• Broadcast Radio
• Television
• Microwave Networks
• Satellite Communications
11b. Applications & Principles
• RADAR
• Wireless LAN, 802.11
• Trunked Radio Systems
• Wireless Data and Internet
• Telemetry
12. Careers
• Job Types and Titles
• Companies That Need You
• Job Search Resources