Wireless (RF) Fundametals

learned from《Agilent公司射頻培訓教程》

1. RF circuit design is all about keeping things in phase!
2. Physical dimensions are critical to RF performance!
3. A second unique aspect of RF design is that physical construction affects
   electrical performance.
4. Linearity = Universal Applicability         Linearity = Complexity + Cost +
   Current  
5. Much of the system design is about making the proper trades among four
   variables:

• Frequency
  (broadcast frequencies:
  regulatory agencies | internal frequencies: available components, cost,
  performance)
• Signal
  Strength
  (output power vs. battery life, safety, government regulations,
  cost)
• Coding
  
  (standards, Interoperability, ease of recovery--microprocessor)
• Modulation
  Scheme
  (standards; interoperability, ease of recovery--microprocessor +
  radio influences LINERITY requirements of radio)