Welcome to WIFI Antennas
Register now to gain access to all of our features. Once registered and logged in, you will be able to contribute to this site by submitting your own content or replying to existing content. You'll be able to customize your profile, receive reputation points as a reward for submitting content, while also communicating with other members via your own private inbox, plus much more! This message will be removed once you have signed in.
Admin
Administrators-
Content count
4764 -
Joined
-
Last visited
Everything posted by Admin
-
-
why not 4x4..???
-
,,,meaning that..?
-
Yes, it looks like this antenna is good ... !!! MiMo Circular Polarization
-
-
It can also be horizontal...!!
-
,,,something like that(with Cu Wire), it's easier to build....!!!!
-
,,,from where did you get it..???
-
"No one, both of them are chinese lies...!!!!
-
,,,a simplified constructive solution with Cu-wire transmission lines...
-
My old variants of the antenna sector...
-
And there's also an 8-patches antenna sector with circular polarization...
-
,,,the zinc sheet does not oxidize quickly....!!!!
-
zinc sheet 0,5mm, 1mm
-
X-DiPol with adaptive line
-
,,,and a wideband transformer on PCB...
-
Another form of transformer 75:50 coax can be made by using the impedance transforming effects of transmission lines. Two sections of 1/12 wavelength feed line will transform one impedance to another. Figure shows how it is done. For short lengths it might be easier to use RG-11 or similar coax instead of hard line for the 75 ohm segment. Normally you would want to put one of these at each end of the 75 ohm run. Don’t forget to include the coax velocity factor when calculating the length of the 1/12 wave sections. Where L = Length in meters or feet depending on value used for S S = speed of light in free space, use 300 if you want L in meters, 984 if you want L in feet W = number of wavelengths desired, 1 = 1 wavelength, 0.5 for half wavelength, etc
-
that's it
-
,,,yes, the VSWR it"s bad...!!!! ,,, but isolation between ports and impedances is good !!! !!!
-
so you want it?
-
,,,, of efficiency I'm a little in doubt ...!!!!
-
Buddy, if you wait a little, I'll fix this too...!!! But why do not you put two such antennas at 90 degrees,,,====>>>>MiMo Antenna
-
Anyway, my antenna is better...!!!!
-
lower patch(vibrator) =40,5mm....???
-
,,,and the ground, where it is...???
