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How real can these dimensions be for the patch yagi antenna...??? ,,,these are according to the website...https://3g-aerial.biz/en/disk-yagi-antenna I think these dimensions need to be checked, which I will try below....I think I'll start with the antenna for 2100 MHz....

No, I think this type of dipole post can stay here.

Bester antenna variant(2,4---2,7 GHz) with an N-P245 connector...

N-type socket / female N-P245 instrument flanged RF connector, for soldering, extended dielectric, 50 ohms The N-Type connector was developed in 1940 at Bell Labs by Paul Neill, and the" N " in the connector's name appeared due to the first letter of his last name. Initially, the connector was developed for frequencies up to 1 Gigahertz, but later its potential for use was revealed at very high frequencies reaching 11 GHz, and thanks to the subsequent refinement by Julius Botka of Hewlett-Packard, the connector was used in systems operating at frequencies up to 18 GHz and can rightfully share the glory of one of the most popular devices in the world today. the most common high - frequency connectors with its predecessor-UHF. The connector has not found much recognition among radio amateurs and civilian users, but it has gained constant popularity among professionals and is used in mobile communication infrastructure, wireless data transmission (WiFi), paging and cellular communication systems, as well as in cable TV networks, standardized according to the MIL-C-39012 protocols. sma N-P245.cst

Can you post technical details for your antenna...??? ,,,possibly CST-file....??!!!

,,,okay, and inside it has disc elements...???

,,,a new YouTube...

,,,this is...

,,,goto Modeling>History List>delete all farfield ,,,install another frequency>>>

When you increase the frequency range, you must delete the old frequency range and install the new one."

,,,another type of Bester Antenna ... Article numberAX-1500 OFFSET BOX Input impedance, Ohms50 Overall dimensions, m0, 145x0, 145x0, 154 Permissible power, W10 Protective coatingpowdered polymer paint SWR in the operating frequency range, max.1,3 Weight300 Casing materialABS+Polycarbonate Irradiator materialgalvanized steel Polarisationleft\right circular map Operating frequency range, MHz1525 - 1575 ConnectorsSMA-male on flexible cable Resulting gain (and bottom width) for different dish diameters25,6dBi ; 16,8dBi ; 17,6dBi ; 21,1dBi ; 24,3dBi The resulting gain and level width of the radiation pattern is 3dB0.55 m 16.8 dBi 23 gr. 0.6 m 17.6 dBi 21 gr. 0.9 m 21.1 dBi 14 gr. 1.3 m 24.3 dBi 9 gr. 1.5 m 25.6 dBi 8 gr. Native gain, dBi10 Width of the DN lobes in the E-plane (horizontal), °110÷120 Width of the DN lobes in the H-plane (vertical), °110÷120

,,,inside(section) of the connectors...

,,,dimensions are shown in the images above...!!!

In this tutorial you will learn how to simulate antenna devices in CST-Studio...https://space.mit.edu/RADIO/CST_online/mergedProjects/EXP_HF/examplesoverview/patch_antenna.htm

ECO, THE IMAGES ARE NOT VISIBLE...!!! "For how big the reflector is, the antenna gain is not that great."