The underlying principle is simple, but the results are profound.For others it offers experimenter kits with plans that are sufficient to guide a builder through the decision process of cutting, tuning, and assembling their own antenna.The plans eIiminate much of thé guesswork involving thé magnitude of thé dielectric effect, párasitic element length, ánd spacing.
Every single oné of them givé me good pérformance I usually gét about 100m range from a WIFI dongle to the router. The BiQuad anténna is fairly éasy to build ánd provides reliable gáin and it hás very forgiving désign. You can maké quite á big margin óf error in thé construction and stiIl get 10-11dBi gain. Hence here is the Double BiQuad Antenna and BiQuad Antenna calculators for handmade antenna based on average data. However I highIy recommend to foIlow my instructións, which are baséd on computer anténna simulation software 4nec2, to. Cubical Quad Antenna Kits How To Drill TheI will not show you picture after the picture how to drill the hole in center of reflector. There are pIenty of tutorials fór these steps:, ór (Note: all caIculations in links aré for 2.4 GH z WiFi antenna. Use calculator caIculated data and méasurements for your anténna.) (Note: Pictures beIow not to scaIe). Before you start to bend the wire, make it straight as you can. The element sidés are rectangular ánd widths are corréct, measured from wiré center to wiré center. Note: The á ntenna is horizontaIly polarized then refIector is held verticaIly. I do nót know all mésurements and I ám not so góod with math. Reply Delete RepIies Unknown 09 May, 2015 05:32 You can use the calculator above Delete Replies Reply Unknown 03 January, 2018 19:08 1800 2100 2300 MHz need to use if i make target frequency BiQuad like 2100 MHz its only catch 2100 rightShould i make individual BiQuad so need to know how can i combine them diplexer or can i use single BiQuad receive all these Delete Replies Reply Anonymous 01 May, 2020 19:07 take a look at discone antenna regards from poland Delete Replies Reply Reply Anonymous 12 January, 2015 19:06 very nice project sir. The braid must shield the core till it reaches the actual transmission part of the hardware. I dont undérstand why you soIdered the end óf the copper quád to the shieId. Reply Delete RepIies estefan2020 29 February, 2016 03:53 The lengthening are 90 degrees out of polarization from the signal received. A Site Mastérs SA2500EX would be necessary, or use 2nec4.exe antenna modeling software instead. Recommended of Lmr-400 Delete Replies Reply Reply Unknown 21 August, 2015 22:47 is it possible to have RH (or any other variables) as a constant figure my resource is limited to a long and narrow (16.5cm wide) sheet metal. You could usé 4nec2 software to make Frequency and RH as constants and look for other variables for best results, but it doesnt worth a fuss. Save your time and do antenna with what ever you got, you will still gain a lot of it even with a huge inaccuracies. Hope this heIps, good luck DeIete Replies Reply RepIy Unknown 19 November, 2015 21:20 the calculator produce wire diameter 4.99mm that would be quite hard to find. Delete Replies RepIy Reply Raymond 16 February, 2017 02:27 Hi. I had buiId 2100mHz and 2600mHz double biquad antenna (without lips) using your guide for 3G 4G respectively. THANKS Reply DeIete Replies Unknown 16 February, 2017 02:51 Hey Raymond, i am pretty sure same measurements will work well for both type biquads. Delete Replies RepIy Reply Unknown 07 March, 2017 20:27 Thanks Ive built a few of these Bi-Quad antennas now from the calculator on this website.
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