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Antenna theory, basics,design antenna

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      • Antenna basics - Basics by From Ian C. Purdie, VK2TIP
      • Balun Theory - The word balun means balanced-unbalanced: it's used to adapt a balanced device to an unbalanced one
      • J-Pole theory - The J-Pole antenna is an omnidirectional antenna that can be used for base, mobile and field day stations. It does not need a ground plane, radials or a complicated matching system. The J-Pole can be cheaply, simply and quickly constructed using a variety of techniques, some of which are discussed in this article.
      • Antennas basics - An antenna study guide by NZART, cover basic topics like dipoles, wave lenght calculation, baluns, beams, dummy loads, and measurements.
      • Install a PL-259 on an RG-8X - A better way to install PL-259 connectors on RG-8X type coax by Dan Richardson, K6MHE
      • Basic Antenna Theory - Basic antenna theory by sub-TV
      • Antennas and Grounds for apartments - Suggestions on finding RF ground when you live in an apartment and you want to setup an antenna
      • 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
      • Dipole Height - How High should my Dipole be? Dipole Antennas and the effect of height above ground
      • Why an Antenna Radiates - How antenna works by ARRL
      • Grounding system - Perhaps one of the most over looked aspects of setting up a listening post is a ground system
      • How to Construct a Dipole - Basic and illustrated article on building wire dipole antennas. This page is about "how to build a dipole antenna"
      • FAQs - Basic Antenna Theory - Faqs and antenna basics
      • Types of multiband antennas - Types of multi-band antennas for the HF bands, from the horizontal end fed wire, to g5rv, log periodics, trap dipoles, vee beams and rhombic antennas.
      • Antennas : theory and designs - Thierry LOMBRY, ON4SKY, develops in several long articles all you need to know about antennas, their design and performance, for both amateurs and SWL
      • W1GHZ Microwave Antenna Book - The W1GHZ Online Microwave Antenna Book online
      • Understanding Standing Wave Ratios SWR - We worry a lot about Standing Wave Ratio (SWR) in amateur radio since SWR is one indication of how well our antenna system is working. Most HF transceivers and antenna tuners have built in SWR meters. SWR is a measure of a transceiverís output power verses the portion of that power reflected by the antenna system By Ken Larson KJ6RZ
      • Low Noise Antenna Connection - Reducing noise to your antenna can gain your aerial performance, learn how.
      • Antenna Noise and Signal Cancelling at LF - By using the signals from two antennas, controlling their relative amplitudes and controlling the phase of one of them, unwanted signal or unwanted noise can be phased out. Circuitry is described which uses the signal from a wire antenna to provide selective cancelling against the signal output from an LF loop antenna.
      • Amateur Radio Antennas: Ground Theory - Perfect ground vs. poor ground. What is the difference? How does the ground influence the DX-gain?
      • G5RV Measurements - Measurements and characteristics of a G5RV Antenna, including effect of the transmission line as part of the antenna and contributes in a large way to it's multi band characteristics
      • Rainbow Antenna Analyzer - A small and inexpensive measurement device designed to determine antenna performance across the amateur bands through use of automatically collected SWR readings
      • Antenna & Mounts - Mobile antennas, how to install antennas in the roof of a vehicle and how tune antennas.
      • Using Delta Matching on HF Beams - Using delta match with HF antennas design
      • Dipole Calculation - Determining your proper length for the open half-wave dipole antenna
      • The Quarter Wave Sloper or the Inverted-V Dipole - A question that seems to be asked nearly everyday is, which is best, the quarter wave sloper or the inverted-V dipole? PDF File by AD communications.
      • HF antenna for high rise dwellers - If you have ever tried transmitting on HF from a tall block of apartments, where it's just not possible to erect a substantial aerial system, then this article is for you by Mel G4WYW
      • Loading inductors in mobile antennas - Mobile antennas, loading coil current, and loaded antennas. efficiency and electrical rules. Loading inductors used in mobile HF antennas.
      • Directional arrays - About collinear array antennas
      • Coax velocity factor - Coax Cables velocity factor article in pdf format
      • Actual Antenna SWR - Easy for calculate formula which could be a wake-up call for you. The SWR value at the input of antenna cable is not a actual SWR of your favorite antenna.
      • Marine corps antenna handbook - U.S. Marine Corps in PDF format
      • To Trap or Not to Trap - An interesting article on traps, pros and cons of trapping by W4RNL
      • Another way to look at vertical antennas - What iss the difference between a dipole and a vertical? Maybe not as much as you think. Come along and try another point of view.
      • The DK7ZB-Match for Yagis - Simple, easy to built match developed in 1995 for Yagis with resistitive loads of 12.5, 18 and 28 Ohm.
      • Antenna Transmatch Tips - Tips on tuning antennas using Antenna Tuning Units also called ATU. This article explains the functions and ills of tuners, along with some guide- lines for building an ATU.
      • Trap antennas, coaxial trap, coax dipole antenna loss resistance - Testing and comparison of traps and trap antennas
      • Radiation and scattering - Basic antenna theory, Antenna directivity and effective area, Antenna arrays
      • Vertical plane antennas' beaming comparision - Animated quad and yagi comparison. You can see antennas' characteristics behavior in a vertical plane with changing of the height.
      • Sloper Antenna Tests - Mark Connelly - WA1ION tests on slooper antennas
      • Low reactance multiband center feed wires - An antenna system is more easily interfaced to a radio when the input reactance at the feedline terminals is low or close to series resonance
      • Coaxial cable dipole for 80m - Here are some simple antennas you can build along with calculators to help you get the right length.
      • 50MHz Power Splitters - Splitting an antenna between two receivers or in use as the phasing harness in stacked antennas where there is a need to equally split the power from the transmitter between two antennas
      • K-FACTOR Table & Chart - Determine the K-Factor used as a multiplier when constructing half-wave antennas.
      Alphabetical
          Result Page:  [<<] 1 2 3 4 5 [>>]
      • G5RV Measurements - Measurements and characteristics of a G5RV Antenna, including effect of the transmission line as part of the antenna and contributes in a large way to it's multi band characteristics
        [ Hits: 5775 | Votes: 5 | Rating: 5.00 ]
      • Ground / Radial Systems - Guide to ground mounting antennas by Bencher
        [ Hits: 880 | Votes: 1 | Rating: 10.00 ]
      • Ground Loss and Vertical Antennas - How manage and quantify ground loss in vertically-polarized antennas by VE3VN
        [ Hits: 182 | Votes: 0 | Rating: 0.00 ]
      • Ground Problems - Collection of articles about ground systems
        [ Hits: 1086 | Votes: 2 | Rating: 8.50 ]
      • Grounding system - Perhaps one of the most over looked aspects of setting up a listening post is a ground system
        [ Hits: 12123 | Votes: 11 | Rating: 4.18 ]
      • Groundplane Antennas at Various Heights - Mounting on Roof or at Ground Level?
        [ Hits: 604 | Votes: 0 | Rating: 0.00 ]
      • Harmonic Operation of OCFs - Theory - Up, Up, and Away or Harmonic Operation of OCFs
        [ Hits: 322 | Votes: 0 | Rating: 0.00 ]
      • HF Antenna Coupling Techniques - Look at some of the various ways in which power can be delivered from a transmitter to a radiating system
        [ Hits: 350 | Votes: 0 | Rating: 0.00 ]
      • HF antenna for high rise dwellers - If you have ever tried transmitting on HF from a tall block of apartments, where it's just not possible to erect a substantial aerial system, then this article is for you by Mel G4WYW
        [ Hits: 4439 | Votes: 2 | Rating: 8.50 ]
      • HF Antennas 101 - Here are 10 tips and truisms that every ham should know about antennas, by W20QI
        [ Hits: 508 | Votes: 0 | Rating: 0.00 ]
      • HF insulation, the pitfalls - Although insulation may seem relatively insignificant in the larger picture, on it depends the quality of your performance on air and how long you will be communicating for.
        [ Hits: 384 | Votes: 0 | Rating: 0.00 ]
      • HF loops vs Half Loops - HF loop and half-loop antennas in a few words
        [ Hits: 1087 | Votes: 0 | Rating: 0.00 ]
      • Horizontal Antennas above Real Ground - Antennas are influenced by the effect of the ground and by the type of conductors from which they are constructed. Effects of various types of grounds on a 1.825 MHz horizontal 0.5 wave dipole
        [ Hits: 415 | Votes: 0 | Rating: 0.00 ]
      • Horizontal Half-wave Dipole above a Counterpoise - All antennas that are situated close to the ground are affected by that ground to some extent. This article explain effects and benefits of counterpoise.
        [ Hits: 1036 | Votes: 0 | Rating: 0.00 ]
      • Horizontal vs Vertical Antennas - CX2UA article on differences of vertical and horizontal antennas in spanish
        [ Hits: 227 | Votes: 4 | Rating: 7.75 ]
      • How good an antenna is ? - How good is an antenna? Four figures describe how good an antenna is compared to the required performance, swr directivity gain and bandwidth
        [ Hits: 145 | Votes: 0 | Rating: 0.00 ]
      • How important is Low SWR - What exacly is the meaning of SWR ? Is a Low SWR really important
        [ Hits: 630 | Votes: 4 | Rating: 7.50 ]
      • How to Construct a Dipole - Basic and illustrated article on building wire dipole antennas. This page is about "how to build a dipole antenna"
        [ Hits: 10038 | Votes: 19 | Rating: 6.53 ]
      • How's Your SWR? - Chart showing how SWR effects how much power you actually radiate from your antenna.
        [ Hits: 813 | Votes: 0 | Rating: 0.00 ]
      • Human Body Resonance Frequencies - Wondering whether human body could be used as an antenna.
        [ Hits: 190 | Votes: 1 | Rating: 10.00 ]
      • Idiot's guide to antennas - A very basic guide to antennas concept. Explain the usage of dummy load, basic antennas like dipole o j-poles.
        [ Hits: 1113 | Votes: 1 | Rating: 10.00 ]
      • Importance of noise reduction in wires antennas - An old post by John Doty about effects of noise in longwire antenna.
        [ Hits: 1371 | Votes: 0 | Rating: 0.00 ]
      • Indoor Random Wire versus Indoor Magnetic Loop - Comparison of performance between an indoor random wire versus a magnetic loop using psk31
        [ Hits: 846 | Votes: 2 | Rating: 7.00 ]
      • Inductors used in antenna matching networks - Article about variometers, helipot inductors, roller inductors, binary switched inductors, Coil and Capstan by G3YNH
        [ Hits: 392 | Votes: 1 | Rating: 1.00 ]
      • Install a PL-259 on an RG-8X - A better way to install PL-259 connectors on RG-8X type coax by Dan Richardson, K6MHE
        [ Hits: 21722 | Votes: 33 | Rating: 8.18 ]
      • Integrated Publishing Basics - Radio wave propagation, Principles of transmission lines, Antennas
        [ Hits: 848 | Votes: 0 | Rating: 0.00 ]
      • Interference Cancelling System - The use of interference signal cancellation has been around for some time. The idea is to use an auxiliary antenna almost any random length of wire in addition to the main receiving antenna
        [ Hits: 1596 | Votes: 1 | Rating: 3.00 ]
      • K-FACTOR Table & Chart - Determine the K-Factor used as a multiplier when constructing half-wave antennas.
        [ Hits: 2637 | Votes: 40 | Rating: 4.02 ]
      • Large Antenna in a fixed direction? - If your antenna is fixed in one direction, you will notice that your antenna works perfectly only during fall and spring.
        [ Hits: 174 | Votes: 0 | Rating: 0.00 ]
      • Les antennes: antenna theory - A basic antenna theory with final quiz in french
        [ Hits: 214 | Votes: 0 | Rating: 0.00 ]
      • Link-Coupled Antenna Tuners - W4RNL tutorial on on inductively coupled (link-coupled) antenna tuners
        [ Hits: 2304 | Votes: 2 | Rating: 5.50 ]
      • Loading inductors in mobile antennas - Mobile antennas, loading coil current, and loaded antennas. efficiency and electrical rules. Loading inductors used in mobile HF antennas.
        [ Hits: 3851 | Votes: 4 | Rating: 6.00 ]
      • Local QRM reduction - It is not always possible to tackle the sources of local QRM. What remains is trying to reduce the noise level by means of your antenna system. Learn how to reduce QRM and understand how cancell noises by PA0SIM
        [ Hits: 609 | Votes: 0 | Rating: 0.00 ]
      • Log Periodic vs Yagi Antenna - Article on Yagi and Log periodic antennas by Tom, K1JJ
        [ Hits: 203 | Votes: 1 | Rating: 5.00 ]
      • Loop Antenna Basics - Loop Antenna Basics and Regulatory Compliance for Short-Range Radio
        [ Hits: 561 | Votes: 0 | Rating: 0.00 ]
      • Low Noise Antenna Connection - Reducing noise to your antenna can gain your aerial performance, learn how.
        [ Hits: 7011 | Votes: 2 | Rating: 6.00 ]
      • Low reactance multiband center feed wires - An antenna system is more easily interfaced to a radio when the input reactance at the feedline terminals is low or close to series resonance
        [ Hits: 2783 | Votes: 5 | Rating: 8.80 ]
      • Marine corps antenna handbook - U.S. Marine Corps in PDF format
        [ Hits: 3660 | Votes: 5 | Rating: 7.80 ]
      • Matching Waves, VSWR at work - When the radiation resistance (voltage to current ratio) of an antenna is the same value as the characteristic impedance of the transmission line (voltage to current ratio in the line), all of the electrical energy transmitted down the line is taken by the antenna and radiated into space in the form of a radio wave.
        [ Hits: 360 | Votes: 0 | Rating: 0.00 ]
      • Maximum Usable Angle - We are all familiar with Maximum usable frequency. Maximum usable angle is the other half of the maximum usable frequency equation.
        [ Hits: 106 | Votes: 0 | Rating: 0.00 ]
      • Measuring Antenna System SWR - Have you measured the SWR at the antenna?
        [ Hits: 167 | Votes: 1 | Rating: 10.00 ]
      • Measuring Cable Loss - Improving measurement accuracy when low-power analyzers are used.
        [ Hits: 579 | Votes: 2 | Rating: 7.50 ]
      • Mini-Beam Geometry Basics - There is a natural progression of the geometry of the "mini-beams" deriving from the basic yagi, which in itself owes a lot to the common dipole. By Dick Stevens, N1RCT
        [ Hits: 369 | Votes: 0 | Rating: 0.00 ]
      • More Information on the EH Antenna - How EH antennas works and how it has performed.
        [ Hits: 2006 | Votes: 1 | Rating: 5.00 ]
      • No Tuner Antenna System - Article on resonant antennas systems by KA3MRX
        [ Hits: 267 | Votes: 1 | Rating: 7.00 ]
        Result Page:  [<<] 1 2 3 4 5 [>>]
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