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Admin
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Everything posted by Admin
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,,,okay,I will try....!!! Yes, so be it...???
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Almost done, but not very good... ,,and with more patches...
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,,,not yet, but in the future...!!!
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Radiation patterns and gain measurements on 1.0, 1.5, and 2.0 lambda backfire Yagi antennas are given. The backfire antenna was tested for two dipole feed locations, and variations in the diameters of the two planar reflectors forming the backfire cavity. The optimum dimensions of the three test antennas are tabulated. The frequency bandwidth of the backfire antenna is limited to several percent due to impedance matching. The backfire antenna should find application in broadside arrays where conventional endfire antennas are presently used. 19680012807.pdf
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Two long arms are connected in the shape of V to make a V-antenna. The two long arms are excited with 180˚ out of phase. As the length of these arms increases, the gain and directivity also increases. The following figure shows a V-antenna with the transmission line impedance z=200 Ohm and the lengh of the arm 0,8*lambda, making an angle Φm with the axis, which is called as apex angle.material-FR4 #1.5mm. The main advantage of a V-shaped antenna is its relatively small vertical radiation angle, which is especially important for establishing long-distance communications.
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In telecommunications, a collinear antenna array is an array of dipole antennas mounted in such a manner that the corresponding elements of each antenna are parallel and collinear, that is they are located along a common line or axis. Collinear arrays of dipoles are high gain omnidirectional antennas. A dipole has an omnidirectional radiation pattern when in free space and not influenced by any other conductors in that it radiates equal radio power in all azimuthal directions perpendicular to the antenna, with the signal strength dropping to zero on the antenna axis. The purpose of stacking multiple dipoles in a vertical collinear array is to increase the power radiated in horizontal directions and reduce the power radiated into the sky or down toward the earth, where it is wasted. They radiate vertically polarized radio waves. Theoretically, when stacking idealised lossless dipole antennas in such a fashion, doubling their number will produce double the gain, with an increase of 3.01 dB. In practice, the gain realized will be below this due to imperfect radiation spread and losses.
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okay, I'll try.
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A network connects computers by means of cabling systems or wireless connectivity, specialized software, and devices that manage data traffic. http://www.rdcs.com/network-options.htm
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So you mean to increase the number of directors.../??
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For documentation, I think this should be studied... matecconf_icesti2018_01042.pdf ,,,dual element triangle patch microstrip antenna for WLAN 2.4 GHz....!!!!
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,,,for clanon... stl.stl
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Your file is completely wrong...!!!
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Okay, now post the images with the results obtained...!!!
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Okay, then post the results...!!!
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I think it's easier to post the CST file....!!!
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,,,but you need to show the positioning of the power point and the thickness of the PCB...!!!
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,,,hi buddy...!!! welcome to this forum...!!! if you can give some dimensions it would be better! Gerber files are from CST-Studio...??? And why don't you write in normal letters?
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The antenna is fed by a dipole at the midpoint between the two reflectors and yields useful gains of 10-15 db. ,,,just that impedance matching must be done....!!!
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ONLINE storeEFPV specializes in the sale of high-quality antennas and accessories for FPV drones, video and radio systems... https://efpv.in.ua/antena-batwing This antenna is an indispensable tool for the military, special services and organizations operating in extreme conditions where maximum reliability and efficiency of wireless communication is required. Frequency range 750-1020 MHz Beam angle 60° Connector SMA-F Material aluminum Gain 10 dBi Size 355*235*110 mm Weight 556 g
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,,,a variety of FPV antennas, including my Batwing antenna model... https://efpv.in.ua/antena-batwing Specifications Frequency range 1800-2800 MHz Beam angle 50° Connector SMA-F Material aluminum Gain 10 dBi Size 144*99*48 mm Weight 115 g
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Maybe this suits you...!!!
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