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,,, is this true..??? https://www.amazon.com/dp/B0D75SNV2F/ref=sspa_dk_detail_0?pd_rd_i=B0D75SNV2F&pd_rd_w=O6n8b&content-id=amzn1.sym.953c7d66-4120-4d22-a777-f19dbfa69309&pf_rd_p=953c7d66-4120-4d22-a777-f19dbfa69309&pf_rd_r=972BGKJK8NP2YPEHWHCE&pd_rd_wg=hdh1C&pd_rd_r=1ceb8afb-1147-4e5d-8180-f7dc66314696&s=electronics&sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWwy&th=1 ,,,with 16dBi gain SWR less than 1.8 and efficiency more than 75%....I don't really think so....!!!!!

,,,for which antenna...??

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.

After an idea of Vman... Sector Antenna 2442mhz.cst

Petra-9 MIMO 4x4 Unibox-2 is a 3G/4G antenna combined with a spacious sealed box (Unibox-2/Unibox-2L) in which you can place an LTE modem with support for MIMO 4x4 technology or two modems with support for MIMO 2x2 technology. The antenna is equipped with reliable connectors-SMA-male (50 ohms). Antenna adapters for connecting LTE modems are not included. The modem communicates with an indoor PC or router via a USB extension cable (USB 2.0). If the router is installed inside the box, the antenna can be equipped with a sealed PG-7 or RJ-45 pin (instead of a USB extension cable) Electrical characteristics of the PETRA-9 MIMO 4x4 UniBox-2 antenna Operating frequency range, MHz 1700÷2700 Gain factor, dBi 8,5÷10 Bottom width in the H-plane, deg 59÷82 Bottom width in the E-plane, deg 35÷57 Side lobe level, max -7 dB Decoupling between ports in the operating range, not less than 25 dB Input impedance, Ohms 50 SWR in the operating frequency range at the inputs, max. 1,5 Permissible power, W 10 Slope of polarization of received / emitted waves -45°/+45°(X-pol) Mechanical characteristics Weight of antenna, mount, box, extension cable g 1900 Bracing mast diameter 20-52 mm Operating temperature range -60°C to +80°C Overall dimensions without mounting, m 0, 24x0, 24x0, 1 Permissible wind speed, m / sec 25 Connectors 4 x SMA-male Material of the protective cover -Polycarbonate+ABS Antenna Material -Galvanized steel, brass Mounting material steel / Polycarbonate+ABS

,,,no...

Lunokhod-1 and its antennas! Is the antenna a cannon or a ribbed rod? In fact, this is an antenna complex! Ribbed-rod guiding director system with an active element in the form of a spiral axial radiation antenna! Do you want a good 4G LTE MIMO antenna "like Lunokhod-1" for your dacha?

The helical antenna is a hybrid of two simple radiating elements, the dipole and loop antennas. A helix becomes a linear antenna when its diameter approaches zero or pitch angle goes to 90º. On the other hand, a helix of fixed diameter can be seen as a loop antenna when the spacing between the turns vanishes (α = 0º ) . Helical antennas have been widely used as simple and practical radiators over the last five decades due to their remarkable and unique properties. The rigorous analysis of a helix is extremely complicated for Circularly Polarized Patch-Helix Hybrid Antenna with Small Ground. Helical antenna calculator...http://jcoppens.com/ant/helix/calc.en.php

The Best Wideband Magnetoelectric Dipole Antennas With Dual Polarization and Circular Polarization... 07091876.pdf

Petra 9-simulation and dimensions...

Hope to see you via EME(Earth-Moon-Earth) on 23 cm Two-way radio communication on VHF ,UHF,SHF and above using the Moon as a passive signal reflector. Commonly referred to as “moonbounce”.

Do you mean 1 mm, not 10 mm?

This antenna is not good enough... 3.52ghz.cst

,,,yes..

I'll try...!!!!

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.

,,,something like that... ,,,for a panel with more than two antennas a different configuration is required...!!!!

A combination of rectangular loop array and slot radiator for multiband applications is presented. The antenna is configured by arranging, concentrically, a set of rectangular loop radiators excited by electromagnetic coupling provided by a dumbbell slot. overall dimensions=91.5x119.5x22.5 mm

It was interesting to design a small and lightweight antenna from available materials for FPV. After looking at what is available in household stores, I decided to stop at zinc/brass for the antenna elements and a canister cover as a radom. And so everything is in order - as it seemed to me, a lid from paint cans / mounting foam / air fresheners is perfect for radom. Its diameter is 77 mm external and 84 mm internal. Height from 12 to 40 mm. Material-polypropylene. Based on this, the dimensions of the entire structure were selected. you will need brass / galvanized 0.25 mm thick, brass tube diameter 4 mm external (wall thickness 0.25 mm), screw m3 -40 mm. cap nut m3, SMA connector, pipe cutter, metal scissors, drills with a diameter of 1.4 and 3 mm. The reflector is made of sardine cans. General view of the structure and results:

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....

It's interesting to see how you worked with deepseek...????

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

Backfire Antenna is a very small antenna with extremely good gain. With a half power beamwidth of 32 degrees, the backfire is a highly directional 2.4 GHz antenna to put the signal exactly where you want it. The backfire is convenient because of its small size. The 17 dB of gain is incredible for an antenna this size. Installation is very simple with the included mounting bracket. The backfire is weather-proof because of it's ABS radome, which covers the radiating element. If you have limited space but still need a high gain antenna, the Backfire is the perfect antenna for you WiFi installation. For full specifications, please see datasheet below.

,,,it's possible like that...let's see...!!!