communication- an incomplete overview


Exchange

Information (and how it differs from Data, Knowledge-Belief-meta Knowledge, Intelligence, Wisdom, and Truth)

Modulation

  • m(t)- Modulating Signal (or Baseband Signal or Info. Signal) and c(t)- Carrier Signal
  • Continuous Wave and Pulse
  • Amplitude, Frequency (or Width) and Phase (or Angle), Code
  • Analog: AM, FM, PM, QAM, SM, and SSB
  • Digital: ASK, FSK, PSK, QAM
  • Spread Spectrum: Direct Sequence, Freq. Hopping, Time Hopping and Chirp
  • PAM, PWM (or PDM, PLM), PPM and PCM 
Odeslaný screenshot obrázek

Odeslaný screenshot obrázek



Transmitter and Receiver


  • Audio
  • Power


Multiplexer (Mux) and Demultiplexer (DeMux)
  • FDM
  • TDM
Modulator and Demodulator (MoDem)
Demodulators are also called as Detectors

Bandwidth
Modulation Index
Sideband Energy

PCM vs Delta Modulation

S/H ircuit

Nyquist Sampling Rate

Sampler-Quantizer-Encoder

Compression + Expanding = Companding

Fold-over Distortion and Over-load Distortion

Granular Noise

Bit Rate vs Baud Rate

Serial Interface vs Parallel Interface

EchoPlex

7 Layers of Open System Interconnection 

Topology

Kepler's Laws

Microwave Tubes
  • Klystron ( Mono-Cavity, Multi-Cavity and Reflex )
  • Travelling Wave Tube
  • Backward Wave Oscillator
  • Magnetron
Variable + Capacitor = Varactor

Power Gain
Noise Figure
Negative Resistance

PIN: p-type semiconductor - Intrinsic semiconductor - n-type semiconductor
SBD: Schottky Barrier Diode
TED: Transferred Electron Device
Gunn Diode
ATT: Avalanche Transit Time

IMPATT: IMPact Avalanche Transit Time 
TRAPATT: TRApped-Plasma Avalanche Triggered Transit 
BARITT: BARrier Injection Transit Time 

LASER vs MASER

RADAR vs SONAR vs LIDAR

Transmission Line vs Waveguide

Waveguide: Rectangular, Circular or Cylindrical, and Elliptical

Wave Equation
Wave Number
Wavelet

Transverse (means Orthogonal or Perpendicular)

cut-off wavenumber, wavelength, and frequency
propagation constant= attenuation constant + phase constant
phase velocity and group velocity
waveguide's wavelength and impedence

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