Theory

Antenna theory, basics,design antenna

Home : Antennas : Theory : Page 2

Home : Antennas : Theory : Page 2

  • Antennas for MF and LF - Long Waves, Short Antennas, designing antennas for MF and LF communications
    [ Hits: 1835 | Votes: 0 | Rating: 0.00 ]
  • Antennas: dirty little secrets I - Butternut article on calculating real efficiecy of commercial antennas
    [ Hits: 484 | Votes: 0 | Rating: 0.00 ]
  • Azimuth Radiation Patterns - Below VHF the change in the radiation characteristics of an antenna will change considerably from frequency to frequency, making antenna selection more complicated.
    [ Hits: 672 | Votes: 1 | Rating: 10.00 ]
  • Balun Theory  pop - The word balun means balanced-unbalanced: it's used to adapt a balanced device to an unbalanced one
    [ Hits: 36867 | Votes: 29 | Rating: 5.66 ]
  • Basic Antenna Theory - Basic antenna theory by sub-TV
    [ Hits: 20903 | Votes: 23 | Rating: 5.29 ]
  • Basics of antennas - The current, the voltage, the impedance, the bandwidth, the polarization, and how the earth influences the famous radiation pattern.
    [ Hits: 554 | Votes: 0 | Rating: 0.00 ]
  • Better Feedline Loss Measurements with Antenna Analyzers - Various publications through the years have shown how the SWR measured on a shorted (or open) feed line can be used to calculate feed line attenuation
    [ Hits: 1443 | Votes: 1 | Rating: 10.00 ]
  • Cebik.org - W4RNL historic web site - A free historic mirror site of L. B. Cebik's W4RNL web legacy.
    [ Hits: 1905 | Votes: 6 | Rating: 6.67 ]
  • Choosing an Antenna - Choosing the right antenna for you, by Lewis G. McCoy W1ICP
    [ Hits: 1521 | Votes: 0 | Rating: 0.00 ]
  • Choosing and Antenna - Beginner guide on choosing an antenna for your ham radio station by W5RH
    [ Hits: 416 | Votes: 0 | Rating: 0.00 ]
  • Choosing Wire Size for Toroidal Inductors - Measurements that show it doesn't make much difference
    [ Hits: 1759 | Votes: 21 | Rating: 6.34 ]
  • Coax Antennas - Amateur Radio Coaxial Antennas by G3TXQ
    [ Hits: 265 | Votes: 0 | Rating: 0.00 ]
  • Coax Cable Loss - Table representing loss of Coax Cables in db per 100ft.
    [ Hits: 2006 | Votes: 4 | Rating: 4.75 ]
  • Coax velocity factor - Coax Cables velocity factor article in pdf format
    [ Hits: 3764 | Votes: 14 | Rating: 4.86 ]
  • Coaxial antennas - G3TXQ study on coaxial cable demonstrate that it can reduce an element's length by something approaching the Velocity Factor of the cable
    [ Hits: 1085 | Votes: 1 | Rating: 10.00 ]
  • Coaxial cable dipole for 80m - Here are some simple antennas you can build along with calculators to help you get the right length.
    [ Hits: 2793 | Votes: 1 | Rating: 5.00 ]
  • Coaxial Transmitting Chokes - Understanding Common Mode and Differential Mode Currents on Transmission Lines by K9YC
    [ Hits: 814 | Votes: 0 | Rating: 0.00 ]
  • Common-Mode Noise - Receiving Common Mode Noise shows how lack of a balun can contribute to system noise
    [ Hits: 1682 | Votes: 2 | Rating: 10.00 ]
  • Conductors for HF Antennas - Putting up an antenna for the low bands? What kind of wire will you use? This analysis may change your plans.
    [ Hits: 1876 | Votes: 4 | Rating: 9.25 ]
  • Construction Principles for UHF VHF Yagis - The Construction Principles for Duoband-Yagis 2m/70cm by DK7ZB
    [ Hits: 1381 | Votes: 6 | Rating: 5.33 ]
  • Cubical Quad Antenna - Let's explore the cubical quad antenna, or quad, and see what it really is and how it really works by w8ji
    [ Hits: 1344 | Votes: 3 | Rating: 1.33 ]
  • Currents in Standing-Wave Antennas - How can the current "flowing" out of the top of a mobile loading coil be greater than the current "flowing" into the bottom of the coil?
    [ Hits: 500 | Votes: 0 | Rating: 0.00 ]
  • Designing Driven Elements in Yagi antennas - The design and feeding of driven elements for VHF/UHF Yagi antennas , modeling, observations and some case studies by Graham Daubney F/G8MBI
    [ Hits: 785 | Votes: 2 | Rating: 6.00 ]
  • Detuning a Tower from a vertical antenna - It is possible to detune the tower so that, at least on one band, the tower can be made to effectively disappear. That is, become non-resonant on the band of interest. This allows the vertically-polarized low-bands antenna to meet its potential.
    [ Hits: 141 | Votes: 0 | Rating: 0.00 ]
  • Dipole Antenna Radiation Patterns - Much confusion exists about the radiation patterns of antennas. In particular, the horizontal dipole is misunderstood by most who use it.
    [ Hits: 1669 | Votes: 5 | Rating: 4.40 ]
  • Dipole Calculation - Determining your proper length for the open half-wave dipole antenna
    [ Hits: 4685 | Votes: 11 | Rating: 4.36 ]
  • Dipole Height - How High should my Dipole be? Dipole Antennas and the effect of height above ground
    [ Hits: 19279 | Votes: 23 | Rating: 5.75 ]
  • Dipoles versus Verticals - One of the classic arguments in amateur radio is whether a dipole or vertical is the best antenna
    [ Hits: 342 | Votes: 0 | Rating: 0.00 ]
  • Directional arrays - About collinear array antennas
    [ Hits: 3935 | Votes: 0 | Rating: 0.00 ]
  • Do You Need an Antenna Tuner - Maybe yes, maybe no. It all depends on the type of antenna and feed line you're using. QST Article in pdf format
    [ Hits: 20168 | Votes: 10 | Rating: 5.30 ]
  • DXpedition Antennas for salt water locations - Which is better a 20m antenna for an island DXpedition: Yagi at 25', or a vertical or two on the beach?
    [ Hits: 315 | Votes: 0 | Rating: 0.00 ]
  • Earth Systems - In order to resonate at a particular frequency, an antenna needs to be at least one half wave length long. Antennas below a 1/2 wave are dependent on a ground system for resonance as well.
    [ Hits: 895 | Votes: 1 | Rating: 3.00 ]
  • Easy way antenna systems - Written by John M. Haerle, WB5IIR (SK). A must read for anyone considering building a good low cost HF multi-band antenna system.
    [ Hits: 737 | Votes: 3 | Rating: 10.00 ]
  • Effect of size and height on flag RX Antennas - Analysis of flag receiving antennas using MININEC with focus on relation of size and atenna height by VE6WZ
    [ Hits: 47 | Votes: 0 | Rating: 0.00 ]
  • Effects of Very Large Ground Screens - A theoretical and experimental study of the effects of very large ground screens on 20 meter verticals
    [ Hits: 274 | Votes: 0 | Rating: 0.00 ]
  • Effects of VSWR on Transmitted Power - By James G. Lee, W6VAT
    [ Hits: 831 | Votes: 3 | Rating: 6.67 ]
  • Errante's capacitive RF Grounding - This system demonstrates that no galvanic coupling to earth is needed for a proper RF earth grounding
    [ Hits: 341 | Votes: 1 | Rating: 10.00 ]
  • Exploring the secrets of the Smith chart - If you're a Radio Engineer wannabee, you need to understand transmission lines. It's impossible to really understand transmitters and antennas without understanding lines. Using the Smith chart is far easier than really understanding the math by Chris Scott and associates
    [ Hits: 896 | Votes: 0 | Rating: 0.00 ]
  • EZNEC simulation files - EZNEC Simulation files collection by DF9CY
    [ Hits: 355 | Votes: 2 | Rating: 7.00 ]
  • FAQs - Basic Antenna Theory - Faqs and antenna basics
    [ Hits: 9616 | Votes: 6 | Rating: 4.67 ]
  • Feeder Radiation - Connecting centre fed antennas, dipoles, yagis, rhombics, loops to coaxial cable, unless care is taken, it is not difficult to end up with feeder radiation resulting in power loss and the radiation characteristics changes
    [ Hits: 1580 | Votes: 1 | Rating: 1.00 ]
  • Fiber Glass Rods and Tubes - Properties of fiber glass rods and tubes
    [ Hits: 718 | Votes: 1 | Rating: 5.00 ]
  • Five eighths wavelength vertical antenna - The basics of a five eigths wavelength vertical antenna, a form of RF antenna widely used for mobile radio communications applications
    [ Hits: 301 | Votes: 0 | Rating: 0.00 ]
  • From Transmitter to Antenna - A collection of articles on the subject of impedance, impedance matching and high-frequency power transmission by G3YNH
    [ Hits: 982 | Votes: 0 | Rating: 0.00 ]
  • G0KSC Revolutionary Yagi Antenna Feed System - New feed system for the Yagi directional beam antenna, that suppress unwanted side lobes within longer Yagi designs by G0KSC
    [ Hits: 1280 | Votes: 8 | Rating: 7.87 ]
  • Search dxzone.com on Antenna
  • Lookup Google Custom Search Engine for Antenna
  • Search Antenna with: Yahoo!, Teoma, Lycos , Bing
  • Antennas : Theory

    Search only in "Theory"

    Main Categories

    Latest Articles

    Follow us

    Related Categories

    Antennas :

    Category Stats

    Daily Top 10

    Get our links, Everywhere!

    Follow us on Social Networks
    RSS Feeds The DXZone.com RSS feed

    Sign up for daily Newsletter

    Service provided by Google FeedBurner

    Free for your Site

    Add our gadgets to your site
    Daily Top 10 links

    Google Custom Search