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And what do you want with these images for yagi antenna?

Okay, and finally, tell me what you want? Something like that,,,, ,,,or like that....???

It's smaller than that

But I think for the LTE antenna , needs a circular or elliptical polarization...!!! You need an antenna like this....

,,, then about 800-900 MHz ... ??

And of course other fractals

Fractal’ term was first coined by Benoit Mandelbrot in 1983 to classify the structure whose dimensions were not whole numbers. One of the properties of fractals geometry is that it can have an infinite length while fitting in a finite volume. The radiation characteristic of any electromagnetic radiator depends on electrical length of the structure. Using the property of fractal geometry, we may increase the electrical length of an antenna, keeping the volume of antenna same. There are an infinite number of possible geometries that are available to try as a design of fractal antenna. One of the important benefits of fractal antenna is that we get more than one resonant band. The fractal concept can be used to reduce antenna size, such as the Koch dipole, Koch monopole, Koch loop, and Minkowski loop. Or, it can be used to achieve multiple bandwidth and increase bandwidth of each single band due to the self-similarity in the geometry, such as the Sierpinski dipole, Cantor slot patch, and fractal tree dipole. The Simplest example of antenna using fractal geometry is given by the Von Koch, researcher. The method of creating this shape is to repeatedly replace each line segment with the following 4 line segments. The process starts with a single line segment and continues for ever. The first few iterations of this procedure are shown in below figure. Fractal dimension contains information about the self-similarity and the space-filling properties. I design Hilbert Curves Fractal Antenna that use the co-planar wave guide feed.The first few iterations of Hilbert curves are shown below fig. This geometry is a space-Filling curve. Starting from HDTV fractal antenna I simulated this type of antenna for wifi domain

Is this better? JJRC H31 Waterproof Headless Mode One Key Return 2.4G 4CH 6Axis RC Quadcopter RTF

Onmi-directional UWB antennas have been developed in the last decade

I will try to do it...!!!

I like it, the movies from the drones are made by you ...?

For fun I ordered this,on the web... Efe, tell me, did you have plans for the practical execution of a drones..??

,,,thanks...!!!

Reflector dimensions = 15x190x320mm Reflector-Patches distance = 5mm

Below I present you a video made by my friend, Julungas. It is a simple explanation of how to simulate in CST Studio, a sector antenna. 00060011.avi This video can be viewed with the DivX Plus Player

And a simple patches variant The patches are positioned by means of spacers of polystyrene foam

,,,create a cardioide..

,,,creating an epicyclod,,,

A short backfire antenna (or short back-fire, SBA, SBF or SBFA) is a type of a directional antenna, characterized by high gain, relatively small size, and narrow band. It has a shape of a disc with a straight edge, with a vertical pillar with a dipole acting as the driven element in roughly the middle and a conductive disc at the top acting as a sub-reflector. The bottom disc has the diameter of two wavelengths, and its collar (edge) is quarter the wavelength tall. This structure behaves like a resonant cavity, resulting in a substantial gain in small space. Short backfire antennas are used in some satellites, and in high-frequency (short-wavelength) communication equipment (often for communication with satellites) on ships and other applications where rugged construction is an advantage. They are also used for wireless LANs. The SBF antenna was invented by Dr. Hermann W. Ehrenspeck of Air Force Cambridge Research Labs based at Hanscom Air Force Base in Bedford, MA and was used for among other purposes, to provide Tactical Satellite Communications for U.S. Army ground forces due to the SBF's portability and gain. The bandwidth of the antenna can be increased by using a conical main reflector instead of a flat one. The antenna proposed by me, presents an active element consisting of a patch antenna and a perpendicular butterfly antenna, both made of PCB.

Even the best omnidirectional receiver antenna can't match a good directional for range and bounced signal rejection. This right-hand circularly polarized (RHCP) directional 5.66GHz antenna has a forward gain of ~9dBi, a beamwidth of 60 degrees and superb front to back reception ratio . It is easy to point in the general direction of the transmitter and reduces multipathing reflected signals from the rear and sides.

A variant with polyhedral patches

Well, then why did you make such an antenna with elliptical patches?

Erkin,that's for you, if you're still running after butterflies,,,,,!!!