vswr

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vswr

24 links - and 1 categories

Antennas : Antenna Calculators
  • VSWR Loss Calculator - This calculator is designed to give the efficiency loss of a given antenna, based on the input of VSWR (voltage standing wave ratio) and other subsequent factors
    [ Hits: 1867 | Votes: 9 | Rating: 2.45 ]
Antennas : Dipole
  • Broadband Dipole 2MHz o 30MHz with no ATU - A broadband travelling wave dipole for HF bands, whose VSWR is less than 2:1 from 3 to 15 MHz and does not exceed 2.6 to 1 from 2.3 to at least 30 MHz
    [ Hits: 3321 | Votes: 2 | Rating: 6 ]
Antennas : Feed Lines
  • Transmission Lines - Whenever you choose a coax feedline, the frequency of operation is a very important consideration. Over the operating bandwidth of the coax the VSWR is low, typically 1.2:1 or better. Insertion loss is also an important parameter. It is usually specified in dB/foot and is a linear relationship.
    [ Hits: 1272 | Votes: 0 | Rating: 0 ]
  • SWR: Maximum allowable VSWR - VSWR (voltage-standing-wave-ratio) represents the degree with which an antenna is "matched" to the system impedance. Most modern antennas do not require any tuning for optimum performance. VSWR is one of the easiest parameters to measure and VSWR meters are becoming very popular antenna installation tools
    [ Hits: 1237 | Votes: 3 | Rating: 3.33 ]
  • The Coaxial Line - Impedance matching, Transmission Lines, Characteristic Impedance, VSWR & Mismatch and Antenna Losses
    [ Hits: 888 | Votes: 0 | Rating: 0 ]
Antennas : Indoor
  • 20m Indoor Loop Antenna - This antenna can gets you on the air on 14MHz, and it has a useable frequency range. The VSWR is almost perfect at the centre-frequency abd the design uses no expensive components.
    [ Hits: 664 | Votes: 4 | Rating: 6.75 ]
Antennas : Theory
  • 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: 507 | Votes: 0 | Rating: 0 ]
  • VSWR Reactive Power - Many antennas and antenna designers neglect the true cause of loss. The major problem using short antennas is the reactance, not the length
    [ Hits: 225 | Votes: 1 | Rating: 6 ]
Antennas : Theory : Impedance matching
  • Matching and SWR - SWR or VSWR - the most widely known yet most misunderstood terms in Amateur Radio. Article by GW6ITJ
    [ Hits: 535 | Votes: 1 | Rating: 8 ]
Antennas : Tuners
  • The EZ-Tuner - The "EZ-Tuner" is a homebrew automatic legal-limit antenna tuner that covers all amateur HF bands from 160-10 meters. Using a T-network design and controlled by a BASIC Stamp BS2sx microcontroller, the EZ-Tuner will match at least a 16:1 VSWR for either unbalanced or balanced transmission lines.
    [ Hits: 5567 | Votes: 1 | Rating: 9 ]
Software : Antenna analysis
  • AN-SOF - Professional Antenna Simulation  updated - AN-SOF is a professional comprehensive software tool for the modeling and simulation of antenna systems. AS-SOF allows to describe antenna geometry, Choose construction materials, Describe the environment and ground conditions, Describe the antenna height above ground, Analize radiation pattern and front-to-back ratio, Plot directivity and gain, Analize input impedance and VSWR,Predict antenna bandwidth
    [ Hits: 240 | Votes: 2 | Rating: 10 ]
  • NEC-Win Plus+ - Developed for beginners, hobbyists, and field engineers. Includes polar plots, rectangular plots for input impedance and VSWR, tabular data, NEC-Win Synth Light and Necvu 3D. Includes NEC2. The program also offers stepped-diameter corrections, Gain Averaging Test, CAD (.DXF) file input, 2-D and 3-D plots and antenna views, and graphical outputs. Run on older Windows version and is out of support.
    [ Hits: 311 | Votes: 2 | Rating: 4.5 ]
Software : Circuit Design
  • RF Calculators - A collection of calculators from everything RF for various applications VSWR, attenuator resistance valies, microstrip, coax, unit conversions and many more.
    [ Hits: 577 | Votes: 2 | Rating: 1 ]
Technical Reference : Attenuators
  • RF Attenuator Calculator - This is an on-line rf attenuator calculator provided free in order to promote the FLEXI-BOX. Calculates the resistor values, attenuation, minimum attenuation, impedance, reflection coefficient, VSWR and return loss of a matching Pi attenuator
    [ Hits: 468 | Votes: 4 | Rating: 5.25 ]
Technical Reference : Power Meter
  • Portable RF Sniffer and Power Meter - Whether we are tuning up homebrew equipment, checking antenna VSWR, adjusting a linear amplifier, or just monitoring output power during a contest, almost all aspects of ham operation can use a power meter. Paul Wade W1GHZ
    [ Hits: 1784 | Votes: 1 | Rating: 10 ]
Technical Reference : SWR Meters
  • Wifi VSWR Meter - A Wifi (V)SWR Meter to build yourself
    [ Hits: 1798 | Votes: 4 | Rating: 7.25 ]
  • SWR calculator - Online VSWR Voltage Standing Wave Ratio Calculator
    [ Hits: 552 | Votes: 6 | Rating: 2.67 ]
  • Digital SWR Meter with Arduino - Inline RF Power & VSWR Meter. A DIY meter 0 to 30 Watt with Average and Peak. Circuit Description, Arduino Nano software code and part list to DIY your own Digital SWR Meter
    [ Hits: 3329 | Votes: 17 | Rating: 5.93 ]
  • WiFI vSWR Meter - When building antennas for the Wifi band (Like the 8dBi omni), a need for an easy way to check the antennas arose. A Voltage Standing Wave Ratio (VSWR) meter useable at the 2.4GHz band is however, hard to find.
    [ Hits: 130 | Votes: 2 | Rating: 3.5 ]
Technical Reference : Standing Wave Ratio

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