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Chapter 3 Antennas (System Implementation (Other Outdoor Challenges…
Chapter 3
Antennas
System Implementation
Antenna Cables
RF Propagation Mode
Link Connection Types
Point-to-multipoint
Point-to-point
Fresnel Zone
Link Budgets
Antenna Alignment
Other Outdoor Challenges
Interference
Environmental Conditions
Short or Long term Plans
Characteristics
Amplifiers
Passive Antennas
Active Antennas
Size
Full-wave Antennas
Half-wave Anteannas
Quarter-wave Antennas
Eighth-wave Antennas
Transmission Direction
Directoinal Antennas
Yagi
Dish or Parabolic
Patch
Omnidirectional Antennas
Mixed
Smart Antennas
Patch
Gain and Loss
Decibel: dB = 10log (P2/P1)
dBm = 10log Pm
Antenna References
dB isotropic (dBi)
db dipole (dBd)
Performance
Radiation Patterns
Top View
Side View
Antenna Poarization
Vertical
Horizontal
Antenna Dimensions
One-dimensional
Dipole antenna
Monopole Antenna
Two-dimensional
Horn Antenna
Dish or Parabolic Antenna