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224 links - and 3 categories

Antennas : Antenna Calculators
  • Loaded Quarter Wave Antenna Inductance Calculator - Here is a formula and calculator for creating a loaded (shortened) quarter wave vertical or balanced dipole. The calculation refers to either a loaded 1/4 wave or a loaded dipole
    [ Hits: 162 | Votes: 0 | Rating: 0 ]
  • Slim Jim Antenna Calculator by M0NWK - Easy to use online Slim Jim antenna calculator. Input your frequency to automatically calculate the lengths of the different antenna parts.
    [ Hits: 188 | Votes: 4 | Rating: 8.5 ]
  • Coil-Shortened Vertical Antenna Calculator - You can shorten a vertical antenna by using a loading coil. This online calculator tells you how the amout of inductance your loading coil will need to have.
    [ Hits: 309 | Votes: 2 | Rating: 5.5 ]
  • 3 Element Yagi Calculator - This calculator is designed to give the critical information of a particular beam antenna, in this case a three element Yagi, for the frequency chosen.
    [ Hits: 435 | Votes: 5 | Rating: 5.6 ]
  • Corned Fed Delta Loop - Author found a ratio between the lengths of the sides of the Delta Loop that give reasonably low SWR into a 50 ohm coaxial cable almost independent of the high above ground and other surroundings. This ratio also gives good results no matter orientation. Includes an online delta loop antenna calculator.
    [ Hits: 167 | Votes: 0 | Rating: 0 ]
  • Double BiQuad Antenna Calculator - Online antenna calculator for homemade double biquad antenna for UMTS 3G 4G WiMAX WiFi frequencies. Article includes also a simple biquad antenna for 4g
    [ Hits: 152 | Votes: 2 | Rating: 5.5 ]
  • Microvert antenna calculator - Online antenna calculator for the microvert capacitive antenna
    [ Hits: 122 | Votes: 2 | Rating: 8 ]
  • Antenna too long! Capacitive couple with transformation to TRX. - Wire antenna calculator with couple c for antennas that are too long.
    [ Hits: 96 | Votes: 0 | Rating: 0 ]
  • Antenna too short! Inductivity matching with coil match. - Wire antenna calculator with inductivity matching coil where length shorter lambda/4
    [ Hits: 132 | Votes: 0 | Rating: 0 ]
Antennas : Capacitive
  • Can Antenna Calculator - Online calculator and Construction of the can antenna
    [ Hits: 128 | Votes: 0 | Rating: 0 ]
Antennas : Log Periodic
  • Log Periodic Dipole Array Calculator - Description and online calculator for Log Periodic Dipole Arrays LPDA are directional antennas featuring a relatively constant characteristics across a wide frequency range.
    [ Hits: 222 | Votes: 2 | Rating: 6 ]
Antennas : Multiband
  • Short Multiband Dipole Array - A multiband shortened fan dipole. This page offers and online calculator that can be really useful if you plan to homebrew a multiband dipole for low HF bands and you don't have all needed space for the full lenght. It combines multiband dipole with loading coild for selected bands.
    [ Hits: 229 | Votes: 0 | Rating: 0 ]
Antennas : WiFi
  • Cantenna Calculator - Aka Circular Waveguide Antenna. This online antenna calculator let you plan your cantenna for the desired frequency of operation, giving the Can diameter you have available.
    [ Hits: 360 | Votes: 5 | Rating: 4 ]
Software : Circuit Design
  • Thevenin equivalent calculator - The Thevenin equivalent simplifies a complex circuit into an equivalent circuit with a voltage source and resistor for easy analysis of voltage and current at any point in the circuit. Use this online Thevenin calculator
    [ Hits: 53 | Votes: 0 | Rating: 0 ]
  • RF Inductor Calculator - This air-core solenoid style RF inductor calculator calculates the inductance, wire size, number of turns, and other parameters for an air-core solenoid inductor used in radio frequency (RF) circuits, based on user input of frequency, desired inductance value, and physical dimensions.
    [ Hits: 98 | Votes: 3 | Rating: 7 ]
Software : RF Design
  • VSWR Calculator - This calculator converts between VSWR and Return Loss, Reflection Coefficient, Mismatch Loss, and Reflected Power.
    [ Hits: 99 | Votes: 2 | Rating: 7 ]
  • WinRFCalc Free Windows RF Calculator - A multi tool Windows program that has been designed to offer the EMC RF and Radio Engineer a large variety of tools for Attenuation calculation, VSWR analysis, FIR Filter calculations, EMC system configuration, Radar testing , RF Filter calculation and much more without the need of a live internet connection.
    [ Hits: 204 | Votes: 0 | Rating: 0 ]
Technical Reference : Calculators
  • Bandpass Filter Calculator - Passive Bandpass Filter online calculator and filter formulas. Active Inverting Op Amp Bandpass Filters, Active Noninverting Op Amp Bandpass Filter, just enter the Low ir High Cutoff Frequency
    [ Hits: 156 | Votes: 3 | Rating: 5.33 ]
Technical Reference : Components : Toroids
  • RF Toroid Calculator - This RF Toroid Calculator provides graphical calculator used to determine the inductance and other parameters of ferrite and powdered-iron toroids. It simplifies the process of selecting the appropriate toroid for use in radio frequency (RF) circuits
    [ Hits: 102 | Votes: 2 | Rating: 10 ]
Technical Reference : RF Safety
  • RF Exposure Calculator - To use the RF Exposure Calculator, fill-in the form with your operating power, antenna gain, and the operating frequency. Depending on how far above ground the RF source is located, you might want to consider ground reflections too.
    [ Hits: 100 | Votes: 0 | Rating: 0 ]

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