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user:kurser:ham_vt2023_l7 [2023/04/25 18:05] – useruser:kurser:ham_vt2023_l7 [2024/02/13 18:08] (current) – user
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 =====ETA313-07: Theory Lesson 3: Antennas, Transmission lines, Propagation ===== =====ETA313-07: Theory Lesson 3: Antennas, Transmission lines, Propagation =====
  
-[[user:kurser:ham_vt2023|Back to course information]]+[[user:kurser:ham_vt2024|Back to course information]]
  
 **Recommended reading: KonCEPT page 191-229 (chapter 7 + 8) ** **Recommended reading: KonCEPT page 191-229 (chapter 7 + 8) **
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-==A design factor for shrinkage (SE: förkortningsfaktor)==+==Realistic design factors (SE: förkortningsfaktor)==
 Antenna component dimensions have to be scaled down when making real antennas. There are various factors that all make up a 0-1 scaling factor, that effectively makes it so that your antenna is shorter than what it would have been if you only accounted for the wavelength of some frequency. Often, you may see that some factor is given as 0.95, 0.96 or 0.98 etc. For instance, aluminium tubing typically has a factor of 0.96. Antenna component dimensions have to be scaled down when making real antennas. There are various factors that all make up a 0-1 scaling factor, that effectively makes it so that your antenna is shorter than what it would have been if you only accounted for the wavelength of some frequency. Often, you may see that some factor is given as 0.95, 0.96 or 0.98 etc. For instance, aluminium tubing typically has a factor of 0.96.
  
user/kurser/ham_vt2023_l7.1682445900.txt.gz · Last modified: 2023/04/25 18:05 by user