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,,,no,I want just a drawing...!!!

,,, clanon, you, can post its technical drawing...??? I am most interested in the transmission lines .. !!!

okay, tomorrow you will have the simulation results ... !!! But why don't you try and this simple antenna....???

I use the dielectric constant = 1.2

,,, or maybe you want this...!!!

,,,it"s good 0.8 mm galvanized iron...!!! You have to wait a little, because I now work on this antenna..!!!

,,,Clanon, air antenna, other dimensions are required...!!!

,,, welcome Vitaliy ... !! ,,, I will try to help you ... !!!! ,,, so, do you like ... ???

,, yes, I know it... long ago...!!! ,,, this antenna is very complicated to execute on the PCB and for so many patches, the gain is very small..!!!! The patches should have a simpler geometry...!!! ,,, this variant in the air, is more interesting but with simpler patches...!!!

,,, it would be interesting to see the adaptation of this antenna to the 75 Ohm cable...!!! I believe that the crossed-dipole, is built on double plated PCB

These are the details... AX 2513.cst

I am very busy these days, but in the yard, I will solve this problem..!!!

,,, vars-cat, these are the results...!!!

,,,thats for 3G 2025Mhz...!!!

,,, if you do not understand something, ask me ... !!!!

,,,, good, and then in what sense do you want me to optimize this antenna...????

I'll try, my friend....!!! But, however, the frequency range is very large...350 MHz....???!!!

,,, yes, it might, it must be tried ... !!!

,,, I repeat, it seems that the adjustment on the frequency range,VSWR or impedance is made by rotating the first director...

When a transmission line is terminated with impedance, ZL that is not equal to the characteristic impedance of the transmission line, ZO, not all of the incident power is absorbed by the termination. Some of the power is reflected back to the source so that phase addition and subtraction of the incident waves creates a voltage standing wave pattern on the transmission line. The ratio of the maximum to minimum voltage where the successive maxima and minima are spaced by 180˚ (λ/2) is known as the voltage standing wave ratio (VSWR).

The only major drawback of the TL-MR3020 is the lack of an external antenna connector, this however can be easily hacked in a couple of simple steps and takes less than 15 minutes. Option A: If you want to use a Pigtail: Solder the center of RG-174 (or the like) coax cable to the left pad (connected to C43 - see Image) and the braid/shield of the coax to the right strip (GND). Option B: If you want to use a PCB Edge RP-SMA connector: Solder the center pin (round) to the left pad (connected to C43 - see Image) and the right pin of the connector to the right pad (GND). There have been reports of EM related damage to MR3020 routers that have been hacked the way shown below. It seems that the cut off capacitors after J4 were put there for EM protection rather than matching the antenna. Please follow the method shown above to have proper EM protection for your router's external antenna. The following images are only left as a reference for now

Well, then post the electrical circuit of the assembly...!!!

,,,or this...

Adaptation,is much more complicated. Lines that are symmetrical but there was more on each printed circuit Board 2 Guanella current balun 4:1 ANTENNA OVERVIEW

Antenna amplifier Pro Street II significantly expands the coverage area of mobile Internet and creates a stable connection with the base station of the cellular operator. Built-in product powerful antenna receives even the weakest signal, and the MIMO technology further extends the bandwidth of the channel, thereby providing the maximum possible speed of data exchange between the subscriber device and a mobile communications tower. Also due to the fact that all radio traffic is going on inside the machine, the Street II Pro amplifier minimized signal losses, which are inevitable when using conventional panel or directional antennas. Power supply and data transfer from the amplifier to the router (computer) is by a single cable type twisted pair, the length of which can reach 120 meters, which makes possible the selection of a place for mounting the device are almost limitless. Street performance sealed enclosure allows for outdoor installation of amplifier and operate it at an ambient temperature of from -30 to +40°C. Protected from moisture SIM slot is located on the housing of the amplifier facilitates easy installation or for quick replacement of the SIM card. Setup and installation takes just minutes and will not cause difficulties even for inexperienced users. Mobility solutions allow business users when moving to a new place to deploy a full-fledged online channel and provide your office with reliable and high-speed Internet in the shortest possible time. FEATURES Frequency range, MHz :1700 — 2700 MHz Gain :12,5 — 16 dBi Support communication standards 2G/3G/4G/Lte Housing material :polycarbonate + ABS Size (l x W x h) :25 x 25 x 9 cm Supported speed :100/50 Mbps. Supported OS :Windows, Mac OS X, Linux Support MIMO :Yes Polarization :vertical / horizontal Antenna type :directed Fastening type :mast diameter 20 — 52mm Operating temperature range :-30° to +40°C