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Eric, let me do a simulation and then see...!!! ,,,,but you see that the patch antenna is not in the center of the pyramid trunk (reflector)...!!!

Kroks Rt-Pot sHw DS modem Huawei E3372, built-in antenna For installation in offset dish on a mast on the wall or on the window sill. Built-in WiFi antenna 2.4 GHz. 4G speed up to 70 Mbps, 3G up to 35 Mbit/s Power DC 24V twisted-pair. Kroks Rt-Pot sHw DS is a router with 4G the modem and the illuminator built into one housing. The router has several types of mounts included in the package. Private gain of the radiator is 8-9 dB. The operating frequency is in the range of 1700-2700 MHz. MIMO technology supported by the irradiator in the entire frequency range, dual channel bandwidth. The device is running OpenWRT operating system that provides bandwidth allocation (QoS), firewall, user access control and many other features. mPCI modem allows you to get the maximum possible speed 4G Internet that may not always provide a USB modem. Built-in WiFi antenna, support 2.4 GHz standards 802.11 b/g/n and provide communications range up to 50 meters in open range.

,,, the promised ...

See this too...

,,,read this..http://www.antenna-theory.com/definitions/sparameters.php The port-to-port isolation is defined as the ratio between the power fed into one port of the antenna to the power received at the other port. It is therefore an important parameter to consider if the antenna is to be used with a transmitter that makes use of MIMO. Ideally one would like the two ports to be completely independent (infinite isolation) because then what ever signal is transmitted from one port will not interfere with the signal transmitted from the other port. The lower the isolation, the more interference there will be between the two transmitted signals.

,,s21,s12 it"s not good,", for this antenna is not recommended...!!!

,,,,, who is Mike ... ???

,,, ready, that this is the end of this topic ... !!! ,,,tomorrow I will give the dimensions...!!! ,,, below are simulated 1 + 1 pepperbox antenna at a distance of 123mm... ,,, twine crosshair antenna...!!!

,,,, 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...!!!