Andrew mcneil is raising funds for the biquad yagi antenna for wifi and fpv on kickstarter. Long range biquad yagi antenna in this video i go over the measurements for the longer range biquad yagi. The dl6wu yagi is highly regarded as being easy to build with repeatable results, broad bandwidth and a useful pattern. It is quite possible, that other calculators deliver slightly different results. Coefficientcalc tibq calculates the coefficients for the digital filter biquad transfer function implemented in ti audio codecs. Free online engineering calculator javascript to quickly find the dimensions of a biquad antenna.
Long yagis are commonly used from the 144mhz amateur band to the 2. Yagi calculator is a program build to produces dimensions for a dl6wu style long yagi antenna. Hence here is the double biquad antenna and biquad. The video is a little longer than normal but i have included every step needed to build the biquad yagi. The webmaster does not read the comments regularly. The dl6wu yagi is highly regarded as being easy to build with repeatable results. I mounted the biquad at the feed point by modifying the original feedpoint hardware. I mounted the biquad on a 24 db parabolic reflector which was designed for 2. The biquad antenna is center fed and symmetric about its origin. This program calculates the focal length and x, y coordinates for a parabola of any diameter and depth. May 11, 2015 introduction the biquad antenna is fairly easy to build and provides reliable gain and it has very forgiving design. Biquad antenna calculator antenna, wifi antenna, hdtv antenna. What is a cnc home biquad antenna bow antenna folded dipole helix antenna folded dipole.
The gain of an an antenna with parasitic elements varies with the spacing and tuning of the elements, and thus for any given spacing there is a tuning condition that will give maximum gain this spacing. A big thanks to preslav enchev for sending me the link. Cantennator allows you to calculate the sizes of the popular homemade antennas for wifi, 3gumts, 4glte and other digital networks, including digital. Double biquad antenna calculator directional antenna ideally suited for uhf frequencies and uses with wifi, umts and mobile phone networks. Some are based on lookup tables, some completely hide their algorithms.
Hf dipole antenna this antenna software will help you design a simple wire dipole antennas for 1 30 mhz. Yagi calculator download it performs the calculations needed to. Antenna design calculators category is a curation of 83 web resources on, parallel square conductor transmission line calculator, analysis of antenna mast strength and bending stress, full wave loop antenna calculator. I have also made a pdf for you to download if you would like to make your own. The biquad yagi antenna for wifi and fpv kickstarter. The characteristics of the digital filter are adjusted by selecting a filter type and moving a control point within a window that shows the transfer function gain and phase plot. The gain of an an antenna with parasitic elements varies with the spacing and tuning of the elements, and thus for any given spacing there is a. This video is a little longer than usual as i wanted to show all the steps of making a double biquad. The default length is chosen for an operating frequency of 2. D is the distance from the dipole to the reflector. You can make quite a big margin of error in the construction and still get 10 11dbi gain. Using your calculator and instructions i built a biquad for 1900 mhz broadband internet service through a local carrier.
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