Broadband quasiyagi antenna for wifi and wimax applications. The dl6wu yagi is highly regarded as being easy to build with repeatable results, broad bandwidth and a useful pattern. Measuring the cellular signal around your building is an important part of the install. Yagio runs under windows 2000, xp, vista, win 7 and likely win 8. A broadband unidirectional antenna based on closely spaced loading method. The wifi yagi antenna is a great accessory for the alfa desktop wifi booster. I like to use the basic dl6wu wideband yagi designs whenever possible. Antenna, ve3sqb ham radio antenna design software programs. The values indicated are not those from the manufacturer, but those calculated with the design software used for this antenna.
It is quite possible, that other calculators deliver slightly different results. Ladder line antennas, how amateur radio antennas work, eznec software and what it can do for you. The antenna should be built on a nonconducting boom, such as a. Software solutions on arrays and yagi antennas software, elnec antenna modeling and analysis by w7el. As a second step, in order to increase the bandwidth of antenna, we have studied a printed dipole antenna with one parasitic ele ment. The yagi uda antenna is the most recognized antenna. Yagi antennas are high gain directional antennas and perform best when they are pointed directly towards the tower you are trying to receive a signal from. And if properly built and constructed, will out perform any commercial bought antenna on the market today. Long yagi are commonly used from the 144mhz amateur band to the 2. For advanced design look at the picture on the page for eznec software to get an idea of the shape you should be looking for. Pdf the yagi antenna is a standard antenna to achieve high gain in a very. Msdos antenna maker it allows to quickly calculate dimensions for quads antennas, yagi antenna, inverted vees antennas as well as jpoles and traps to. Its a scaled down version of the 144 mhz ultra wideband yagi produced by rutland arrays. The dxeps2b broadband two antenna phasing system is primarily designed to combine two identical yagi, log periodic or vertical antennas in a phasing arrangement.
Building a yagi antenna for uhf jtech engineering, ltd. Yagi calculator yagi calculator is a windows program that also runs well on linux, ubuntu 8. The most widely used formula to calculate the approximate overall length of wire required for a dipole is. Free online engineering calculator to find the dimensions of a yagi uda antenna for a given frequency range and length. The antennas described in this article were built as the result of several discussions between kent and a cuban radio operator. This software can not only be used to design but also to find out antenna gain, stacking distance, and standing wave ratio swr. Welcome to the world of wireless internet, antennas, coaxial cable, return loss plots and all sorts of nerdy stuff. The loaded dipole is not as good as a full size antenna but it can be used in limited spaces and even indoors. Yagi antenna design basics learn more about a yagi beam. While there are plenty of high performance antenna designs. Yagi calculator is a free antenna design and analysis software for windows. G0ksc simple to build, high performance yagi and quad. Audionut designed his first yagi with this program. Hence here is the double biquad antenna and biquad antenna calculators for handmade antenna based on average data.
The parasitic elements of the yagi antenna operate by reradiating their signals in a slightly different phase to that of the. To be combined with a yagi uda antenna or used as is. Guideline installing a yagi antenna alternative wireless. Antenna calculator for hf antennas ham radio secrets. Antenna calculator wifi antenna extension loss calculator. This program uses different formulae for 2, 3 or multielement designs and includes element tapering. This method of construction can be used on most uhf through low microwave yagis, and is especially useful for the 33, 23 and cm bands. Indeed, the antenna exhibits near the theoretical 15 db gain, enabled broadband connections at 54 mbs over a path that at best reached 11 mbs on an unmodified wifi adapter. This wiki provides detailed instructions for building and installing high performance mobile broadband yagi antennas. And a yagi antenna calculator, a cubical quad antenna calculator, a dipole antenna calculator, a loop antenna calculator, a wire antenna calculator, and a guide to many ham radio wire antennas. These yagi s are unequalled in terms of matching and broadband performance, both on transmit and receive and the, db gain, and the radiation pattern. Effective jan 2016 i will be changing web hosting providers and as such a complete redesign of my website using a content management systemcms to better design and host the site.
Antenna calculator dipole antenna calculator, yagi antenna calculator. It may be handy to use this tool to achieve an initial design and then transfer it to mmana for further. The dxeps2b is a frequency dependant broadband system that operates from 160 though 10 meters. The antenna design was optimized for broadband performance using yagimax software. Fm antennas include dipoles, panels, yagi and logarithmic antennas for directional and omnidirectional patterns, ideal for any kind of coverage. Design and implementation of dualstacked identical yagi antenna. We will need to turn the software numbers into a more useful form for building. Yagi uda antenna calculator you may want to combine it with a folded dipole.
The design was done using an online yagi calculator software an. This quasiyagi antenna achieves a measured 48% bandwidth for vswr 2, better than 12 db fronttoback ratio, smaller than 15 db cross polarization, 35 db absolute gain and a nominal efficiency of 93% across the operating bandwidth. The gain of yagi antenna depends on length of antenna array and do not depend on number of directors used in the design. Yagio is similar to lpcad, it uses keyboard commands instead of a mouse menu. The antenna calculator above uses this formula as a starting point to calculate wire lengths for the dipole. One of the major keys to understanding yagi theory is a knowledge of the phases of the currents flowing in the different elements of the antenna. The antenna should be built on a nonconducting boom, such as a wooden ferring strip or dowel. Some are based on lookup tables, some completely hide their algorithms. The dl6wu yagi is highly regarded as being easy to build with repeatable results, broad bandwidth and a.
Cheap yagi antennas for vhfuhf by kent britain, wa5vjb edited by john maca, ab5ss editors notes. Texas advanced technology program and the national science foundation major. Moreover, the antennas above usually adopt a large metal sheet to obtain highgain, which is not good for antenna stealth in military. As most of us know, the monoband yagi is by far the best antenna choice. Since the m1 has 2 mimo antenna connectors ts9, i decided to purchase a pair of these proxicast 911 dbi ultra broadband antennas and mount them perpendicular to each other on my mast. The yagi designer program was first developed in 1992 on a decvax 3100 and written in fortran, and the output was graphed in mathematica 2. The resulting antenna design was evaluated for potential hf skywave. The advantages of a broadband antenna are obviousfewer adjustments during tuneup. Broadband two antenna phasing system dx engineering. I tried to have a broadband yagi with gain figures close too or better than the common 4 element moband yagis. Finally, we have developed a special broadband antenna for wifi and wimax applications. This calculator is designed to give the critical information of a particular beam antenna, in this case a seven element yagi, for the frequency chosen.
A broadband planar quasiyagi antenna ieee journals. To design the antenna, you need to go to task design yagi menu. Broadband antennas 91 antennas that provide a good impedance match over a wide frequency range have been a topic of interest to hams for many years. These antennas were made with this process, and tested on this backyard antenna range. Difficult paths that have been overcome by wpers building yagi antennas using the.
At 16 dbi, the yagi is more than 10x as sensitive as the alfas standard 5 dbm antenna meaning that it will do a much better job of pulling in a weak wifi signal such as that from a campground recreation room or remote wifi antenna. The hf version is my program taken from research done by w3gnr who must have spent. This calculator is for short boom simple multi element monoband yagi antennas, and will not give you a perfect 50 ohm match. Yagi antenna design and how to understand basic yagis. It helps to achieve desired gain and directional pattern. A multiband yagi antenna yf1ar yankee foxtrot one alpha. Amplifier designer emitter feedback bias broadband vhf power amplifier, 3. It is very broadband for a dipole and makes a great field day antenna. A highgain and broadband printed yagi uda antenna is proposed in this paper. Pdf design of a planar, closely spaced yagi antenna. If you want to put this thing outdoors, do not use brass, as it. It has since been converted into a dll with lightning fast speed compiled in the c language.
We have an antenna that simulates well but the design parameters are entered in the software in a way that is good for the software, and not so good for building things. A novel broadband planar antenna based on the classic yagiuda dipole array is presented. The dl6wu yagi is highly regarded as being easy to build with repeatable results. Antenna calculators folded dipoles, wire antennas, design your own dipoles, design your. It was written by a physicist that has always enjoyed dabbling in radio. The yagiuda antenna is the most recognized antenna. Furthermore, no matching system has to be built in addition to the antenna, just a simple choke balun in the coax. Having had a gem quad hf 201510m for a few years, back in the early 80s, i can testify to the quads slight advantages over a tribander yagi with the same number of elements my experience has been that a well designed, 3element triband quad has.
Best hoa friendly antenna, discrete and stealthy broadband. Minimum swr and reactance of of the primary concern keeping these low ensures very high radiating efficiency. Antenna calculator dipole antenna calculator, yagi antenna calculator, find the length of a dipole, 3 element yagi. Verticals covers all the common types with a coil calculator built in for the antennas that require them. The word yagi is used to describe a type of antenna and is credited to very famous. Again, for ultimate performance over long distance wifi links, use a short version of the yagi to feed a parabolic reflector as well as a high powered wifi adapter. However i highly recommend to follow my instructions, which are based on computer antenna simulation software 4nec2, to maximize performance. Mcduory tv outdoor yagi antenna with long range reception capacity digital tv antenna available for attic or roof mount, long range digital ota antenna for clear reception, 4k1080phd. Db provides both the antennas and all the elements of a complete antenna system.
Yagi calculator is a program build to produces dimensions for a dl6wu style long yagi antenna. Zplots uses excels charting capabilities to plot impedance data obtained from a variety of sources, including the w5big aim4170 antenna analyzer, the n2pk vector network analyzer, and several different antenna modeling programs. W7rai has a very nice dos based yagi design program that can be downloaded for free. The first step to installing a yagi antenna is determining the best place on the building to mount it. Online calculator yagi uda antenna based on nbs tn 688. It produces maximum gain but requires tweaking for the number of elements. T2fd the forgotten antenna on nordic shortwave center. Long yagis are commonly used from the 144mhz amateur band to the 2. The spacing between directors usually range from 0. Using this software, you can design and build your own yagi antenna.
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