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... wouldn't one be better than this ... ??? ,,,a good antenna for parabolic(offset) dish....!!!

gain in dBi = gain in dBd + 2.15 dB

,,, this drawing is made by me according to the author's instructions... http://give-all.biz/articles/samdel/samodelnaya-antenna-analog-obluchatelya-bester https://www.lan23.ru/forum/node/71?t=42.......#7 post ,,,You"re from Mumbai...???

,,,the truth is that for this type of antenna also called 'gun', the insulation between the ports is not good , so the antenna is not good for MiMo....!!!

,,, okay, something like that you can build ... ??? ,,,, after the simulation I will send you the execution dimensions...!!!

How does that new Bester Antenna behave ,,,???

I tried to do a simulation with these dimensions of antenna and the result was not very good...!!!

4G antenna box Bester Box LTE MIMO is a subscriber device for improve signal reception of wireless data carriers, working in the 4G standard (LTE 2500-2700 MHz). Outdoor all weather antenna execution. It can be installed inside or outside the premises. 4G modem is installed inside the antenna and stays inside for the entire time system operation. If desired, the modem can be switched off at any time removed from the antenna and/or replaced with a new one. The Bester Box LTE MIMO 4G antenna connects to a computer or router using a special usb extension cable Operating frequency range, 2500 ~ 2700MHz Antenna gain, 12.5dBi Input impedance, 50 Ohm The radiation sector in the horizontal plane (H) (-3 dBi)°25 Radiation sector in the vertical plane (E) (-3 dBi)°25 Spurious polarization suppression, 27-dBi Maximum input power, 50w SWR in the operating frequency range≤ 1.4 Connector Type 2 x N-female (female) Antenna dimensions, 245x225x95mm Space dimensions for active equipment inside the box, 185x85x85mm Case material, active elements and mounts PVC, aluminum, brass. Steel, galvanized steel. Working temperature, ° C; humidity, %-40..+60; 0 - 100.

The external antennas can be connected using the coaxial cable as below....

,,,hi buddy...!!! ,,, good achievement ... !!! In your cst simulation, the polystyrene spacer is missing...??

2 + 2 antennas 2-Supports LTE FDD Band 3/7 (1800/2600 MHz) and TDD LTE Band 38 (2600 MHz 2= Supports 3G UMTS 900/2100 MHz ,,,, external antennas with Pigtail cable can be attached in the "P" points

These files can help you...???!!! 5,8ghz.dxf 5,8ghz.gbr 5,8ghz.gds

,,,hi buddy...!!! ,,, I think it's possible, I didn't really work with 4nec2, try it anyway .. !!! ,,, from here you can choose a calculator for the helix antenna....https://yandex.ru/search/?text=helix antenna calculator&clid=2270485&banerid=6302000000%3A5e8ad2bd534fbf00271b3d7b&win=383&from=ntp&lr=105372

,,,hi buddy...!!! ,,,download this and install it...!!! https://play.google.com/store/apps/details?id=com.radioacoustick.cantennator

,,, show me what your real installation looks like...!!!

.... this is how a USB connector of ALFA modem is connected to a CAT5 cable...

,,,hi bro..!!! ,,, how did you connect the antenna to the usb adapter (what type it is ... ???))...!!!!

,,,hi buddy...!!! ,,, what do you think of this ... ??? ,,, would you like to build it...??? PCB diameter = 50mm

,,,hi buddy...!!! I designed this antenna(,,,and on PCB,,,!!!) many years ago on a Spanish site that was closed, zero13wireless.com ,,, if I remember correctly, it was like that...!!!

,,,hi buddy...!!! ,,, yes, but anyway you did not rotate the antennas by 45 degrees as I showed you...!!!

Covid-19 ,,, if the angle of 90 degrees is increased , a good uniformity of the frequency bandwidth and impedance of Batwing-Antenna can be obtained... angle=100 degrees ,,,Covid 19-1 angle=111,5 degrees

Different forms of dipole.. ,,, and a simulation of one of them...

,,,named Covid-19,,, after a moment of inspiration, I managed to configure a new Batwing type antenna that provides a wide frequency band and a VSWR factor <1.5... The antenna is made of round cut galvanized sheet, cut triangularly and rounded corners..

,,, something like that ... !!!