theory

theory

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• 3 element Yagi Antenna On-line Caluclator - This article includes an online calculator for a 3 element Yagi Antenna. The formula and basics theory of Yagi Antenna are also explained with examples.
  [ Hits: 839 | Votes: 19 | Rating: 4.59 ]

• Antenna Theory : Baluns - This article describe the principles of baluns when referred to devices used to balance unbalanced systems, like a coax cable and a dipole antenna
  [ Hits: 706 | Votes: 2 | Rating: 9 ]

• The Wave Antenna for 200-Meter Reception - A QST Article published in November 1922 is about the origin of Beverage antennas, an unidirectional antenna type that was discovered and experimented for the first time in that period. This article is the introduction to beverage antenna theory, by the homonimous autho H. H. Beverage.
  [ Hits: 204 | Votes: 0 | Rating: 0 ]

• Horn Antenna - Horn Antennas theory and principles
  [ Hits: 598 | Votes: 0 | Rating: 0 ]

• G3YMC Loop Antennas - Experiences with Loop antennas at G3YMC include some loop antenna tests and theory by G3LHZ
  [ Hits: 826 | Votes: 0 | Rating: 0 ]
• Horizontal Loop Antennas - Theory of horizontal loop antennas, as discovered by G2PL using a lowered quad antenna and theorized by ZS6AKA
  [ Hits: 1407 | Votes: 6 | Rating: 4.67 ]

• Homemade Magnetic loops antennas by F5RDS - Basic magnetic loop antenna examples and loop aerials theory explained. This article inclued some interesting tricks on building magnetic loop antennas and an usefull excell sheet to help compute magneti loop antennas calculating power efficiency from 10 to 40 meters band
  [ Hits: 257 | Votes: 0 | Rating: 0 ]

• Cavity Backed Antenna - A cavity backed antenna is a practical slot antenna tipically used in microwave applications
  [ Hits: 240 | Votes: 1 | Rating: 1 ]

• Introduction to Microstrip Antennas - Article about the microstrip antenna, which is also commonly referred to as the patch antenna.
  [ Hits: 378 | Votes: 2 | Rating: 7 ]

• Asymmetrical Hatted Vertical Dipole - Theory and origins of W4RNL Asymmetrical Hatted Vertical Dipole AHVD for portable operations.
  [ Hits: 746 | Votes: 0 | Rating: 0 ]

• Spiral Antenna Theory - Spiral antenna belong to the class of frequency independent antennas. Antennas with a very large bandwidth.
  [ Hits: 1132 | Votes: 1 | Rating: 8 ]

• Designing Vertical Aerials - If you want to design vertical antennas you can find all theory and formulas used to model a vertical aerial calculating capacitance, reactance, building the inductor and calculating resistances. Includes an excel spreadsheet to calculate efficiency.
  [ Hits: 576 | Votes: 0 | Rating: 0 ]

• Antenna Gain - An interesting guide to aerials comparing height, gain and angles
  [ Hits: 428 | Votes: 0 | Rating: 0 ]

• Matching and SWR - SWR or VSWR - the most widely known yet most misunderstood terms in Amateur Radio. Article by GW6ITJ
  [ Hits: 536 | Votes: 1 | Rating: 8 ]
• The Gamma Match - The gamma match was originally invented as a means of feeding vertical monopole antennas for medium wave broadcasts, which were earthed at the base for lightning protection- Hams are more likely to use a gamma match to feed a dipole or loop element, but the basic theory is easier to understand for the case of a quarter wave monopole.
  [ Hits: 957 | Votes: 2 | Rating: 4.5 ]

• ZigZag Antenna - VHF/UHF unconventional antennas - An unconventional antenna family, the VHF/UHF Zigzag Dipole Antennas. Design, theory and practical construction, transformation and balancing with a half wave balun.
  [ Hits: 746 | Votes: 2 | Rating: 8.5 ]

• Electromagnetic Wave Propagation by Conduction - A sacrilegious re-examination of current wave propagation theory and proposal of a new, more comprehensive and logical alternative.
  [ Hits: 300 | Votes: 0 | Rating: 0 ]

• FIlters calculator - Passive Band-Pass Filter, low-pass filter calculator
  [ Hits: 418 | Votes: 3 | Rating: 2.33 ]

• DDS RF Signal Generator Project - S53MV Project - RF Signal Generator
  [ Hits: 897 | Votes: 3 | Rating: 6 ]

• Vacuum Tubes - Vacuum Tubes History, Theory, and Circuits
  [ Hits: 490 | Votes: 2 | Rating: 4.5 ]

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