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This page details the construction of a biquad antenna. The biquad antenna is easy to build, and provides a reliable 11dBi gain, with a fairly wide beamwidth. an antenna geometry of ideal biquad...

FPV batwing antenna 5.8 GHz 12dB 30° WavLink Batwing 5.8 GHz SMA, for quadrocopters and aircraft models-will allow you to transmit a radio signal wirelessly, more stably and over a longer distance. The presented directional antenna operates at a total frequency of 5.8 GHz and is mainly used for quadrocopters and aircraft modeling, in order to increase the signal transmission range. A special feature of the model is the high gain, wide bandwidth, collapsible design, good housing materials and a popular connection connector. The antenna is one of the best FPV antennas in its price range, as it has a good gain factor. The gain of this antenna is 12 dB, which is enough for most tasks. The antenna can be used to stabilize the signal and display the image accordingly. Most often, this antenna is used to transmit a wireless signal in aircraft modeling, and it can be used both on transmitters and on wireless receivers. The antenna has a simple design and a high gain, so the engineers of our store conducted a special test. We conducted the test with a quadrocopter and a 400 MW 5.8 GHz transmitter, as well as FPV goggles. In the first test, omnidirectional clover-type antennas were connected to the devices, while the video signal transmission range was about 150 meters. In the second test, the Batwing antenna attached to the boom was connected to the FPV glasses, while the video signal range was about 5500 meters. https://gadgets-world.com/fpv-antenna-batvynh-5.8-hhts-12db-30-wavlink-batwing-5.8ghz-sma-dlia-kvadrokopterov-y-avyamodelei/

I tried to do a simulation for this antenna and it resulted in some miniature dimensions....!!! ,,,and for the 5.8 GHz frequency...

If you solder the shield of the coaxial cable to the ground, it is not recommended.

The dielectric constant of styrofoam (expanded polystyrene) is approximately 1.02–1.04. This low value is due to its low density, which consists of air bubbles (with a dielectric constant close to 1) and the polystyrene material itself. The dielectric constant of solid polystyrene resin, without the air pockets, is higher, ranging from 2.4 to 2.6. For expanded polystyrene (styrofoam): The dielectric constant is approximately 1.02–1.04, which is a very low value due to the high volume of air in the foam. For solid polystyrene resin: The dielectric constant is higher, ranging from 2.4 to 2.6. Factors influencing the value: The dielectric constant is influenced by factors such as density, moisture, temperature, and frequency. Frequency dependence: While the dielectric constant of solid polystyrene is relatively flat up to 1 GHz, the value for the foam is measured in specific ranges, like 100-400 MHz.

A horn antenna is one of the most commonly used antenna types for a focused antenna. However, the horn antenna is limited by its dimensions, which must have a certain size relative to the wavelength in order to work properly and efficiently. Since this will typically be too large to fit into the flange, a dielectric lens antenna with reduced dimensions is developed. The lens has the spherical form which is able to enhance the gain by making use of guided surface waves. The antenna is fed by a circular waveguide and at the boundary of the dielectric half space. A stepped impedance transformer has been introduced in order to provide broadband input matching impedance. Dielectric rod antennas refer to traveling wave antennas with a slow phase velocity (vf< s). They are used at the border of the centimeter and decimeter wave ranges in the frequency band from 2 to 10 GHz. Dielectric lenses are made of materials with high dielectric constants, such as polystyrene, polyethylene, and plexiglass. They can be integrated with various types of feeds, such as horn antennas, microstrip antennas, and waveguide antennas.

This is harder to build...

After so many years I tried to recreate this antenna with the dielectric lens....

This project is dedicated to Doyt R. Hoverman (b.1913), the man who created and did the early work on the Hoverman antenna at a time when antenna modeling programs did not exist. His work would have been entirely created and improved by field testing, trial and error, and with a great amount of calculation without the benefit of electronic devices. Without his efforts, our work would not have been. Doyt Hoverman passed away in December, 1989 at Van Wert, Ohio, USA. Technical data Simulation With insulating spacers

Waveguide slot antennas are a type of microwave antenna that use a hollow metal tube, called a waveguide, to transmit and receive electromagnetic waves. They have slots cut along the length of the waveguide, which act as radiating elements. Waveguide slot antennas have some advantages over other types of antennas, such as high efficiency, low loss, and wide bandwidth. Single Sided 8 Slots Waweguide...41x20x360mm....

,,,2.1---2.5 GHz, is the frequency range quite good...???

,,,does this suit you...??

I don't know if this can help you.....

Is a Russian patch-antenna for its positioning in the focus of a parabola offset... Antenna is broadband (2.3-2.7GHz) Bester Antenna on the offset dish It has a elliptical polarization antenna.

If I remember correctly, I tried something like this... but I'll try this square bester too, inside of beercan...

,,,there... bester.stl

Clanon, maybe you can optimize this.... bester comercial.cst

I wonder if the antenna elements have concentric copper circles on PCB...???

Yes, but it seems that many people still buy it....

Okay, but what's interesting is that this antenna has elements made of PCB....!!!

,,,,hi buddy...!!!! It's pretty good, if you have it, try it....!!!

,,,maybe USB Adapter can increase the gain...!!!???

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