Admin

,,,, mojtaba, are you dealing with drones ... ???

,,,like this...???

,,, the air is not dielectric .... !!!

,, only if you give me the dielectric characteristics of the pepper-box material...!!

,,,0,62*lambda-----0,99*lambda

,,, and that's, how you say ... ???

", yes, look , and you said that you have no links to this antenna,...!!!!

,,,yes,with 2x2dipole...!!!

Broadband MIMO antenna for 2G/3G/4G/WIFI. The amplification of 18 dB. Supports standards LTE1800, UMTS2100, WiFi2400, LTE2600. It is recommended to use complete with 3G/4G modems and routers. Dimensions (length , width , height ), mm485 x 265 x 80 Antenna - features : Operating frequency range, MHz 1700-2700 Antenna gain, dB15-18 SWR in the frequency range, not more 2 Polarization Linear Input impedance, Ohm 50 Maximum input power, watts 10 Connector F - female N - female Permissible wind load, m/s 30 The operating temperature range, oC -40 ... +80 The maximum permissible humidity of air, % 100 Crosspolarization isolation is not less than, dB35 Connection standard 3G (UMTS2100) 4G(LTE2600), YOTA LTE 1800 GSM 1800 WiFi 2400 Multi-band

These are the results of Bejo's Pepperbox antenna... ,,, the antenna is broadband (2.1-2.6GHz) but I think the diameter of the 7mm tube needs to be changed for better impedance adaptation (50 Ohm) ,,, or changed the height of 21.4mm

Okay,I"ll try it...!!!

I think this patch would be more interesting...

,,, welcome yurik82...!!! ,,, why don't you post some pictures...??? I think elliptical patches are harder to build for DIY...!!!

In the proposed antenna, however, the slot lengths ( E1-E4 ) play important roles in controlling not only the bandwidth but also the port isolation. It can be seen that when the slot length decreases, the lower resonant frequency increases and leads to bandwidth deterioration, due to the fact that the inductance of the slot is reduced as the slot length decreases. ,,,and this it"s the simulation...

A compact dual-polarized double E-shaped patch antenna(ESPA) with high isolation for pico base station applications is presented in this communication. The proposed antenna employs a stacked configuration composed of two layers of substrate. Two modified E-shaped patches are printed orthogonally on both sides of the upper substrate. Two probes are used to excite the E -shaped patches, and each probe is connected to one patch separately. A circular patch is printed on the lower substrate to broaden the impedance bandwidth. Both simulated and measured results show that the proposed antenna has a port isolation higher than 30 dB over the frequency band of 2.5 GHz – 2.7 GHz, while the return loss is less than -15dB within the band. Moreover, stable radiation pattern with a peak gain of 6.8 dBi – 7.4 dBi is obtained within the band. ,,,MADE BY Yanshan Gou, Shiwen Yang, Quanjiang Zhu, and Zaiping Nie

I'm sorry, I don't have this drawing in the original, I made an approximate measurement...!!! ,,, ask "acri" where he found this drawing ... !!!

Figure 1(a) shows the conventional patch with a feeding line. Next, the radiating patch is rotated 45◦ clockwise from the initial design, as shown in Figure 1(b). Finally, as shown in Figure 1(c), the chamfering is applied to the antenna on the left and right side as well as at the upper part of the radiating patch (labeled C0 and C1). An inset feed was applied to feed the radiating patch. The antenna design simply allows a further reduction in size of the radiating patch with the inclusion of the chamfering. The coordinate system is inserted in all related figures in this paper to facilitate a clear view of the design structures and radiation pattern.

,,, you mean you say .... thank you very much, admin...??!! ,,, without Russian language, please ... !!!

,,, this is the promise made previously....

https://www.youtube.com/watch?v=-X-g3wR0Va0&list=PLH4bbwv04qxkhk4k3Uiwo7Mt_K7OAqKN3&index=3&t=217s

This is an achievement of my Mexican friend, Julungas...

,,, put the dimensions ... !!! and this is Eric's picture...