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Posts posted by Admin
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Congratulations ... very good work Andrew77....!!!!!!!!!!!!!
it must to have made adapting impedance...!!
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To take full advantage of MIMO (currently used in 4G LTE communications) two antennas must be used. When installing directional antennas like a panel antenna, the first antenna must be rotated horisontally to a 45 degree angle and the second to a 135 degree angle. This is because of "polarisation diversity". LTE uses polarisation diversity to help distinguish between the two data streams sent from the tower.
This MIMO panel antenna for 3G has the advantage of good isolation between the two ports.
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2 hours ago, Andrew77 said:Can this disk be applied to longer helical antennas (2 wavelength) and @ lower frequency? (EG 430 MHz)??
thanks
Yes, this parasitic disc can be applied but only at helical antenna with 3...5 coils or at least reduced by 70-71%.!
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,,,by Oveco ...
When used with the WiFi adapter Alfa AWUS036H managed to keep the relationship at a distance of more than 10 nautical miles (18.5 km).
Features Wi-Fi antennas AP-15m:
* Operating frequency band: 2.4 GHz
* Gain: 15 dB
* Angle of the main lobe: 30\30 degrees
* Weight: 0.75 kg
* Dimensions (without mount): 20х20х2см
* Crosspolarization: -30dB
* Antenna efficiency: more than 90%
* 2m cable included, SMA connector
* The antenna has a swivel mount on the tube with the wing nuts2 people like this -
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Chipset Atheros AR9271
The interesting device is "full N 300 Mbps" how it is full I Hate, 2R2T . But the fact that he uses on the reception of both antennas it is a fact, try to put on the first antenna panel 18Dbi result is worse than with two pins.
Very good sensitivity , compared with a whistle at the base of Ralink - no worse.
Fully compatible with Commview.
In BackTrack5 and WifiSlax driver are - app.
From slightly altered device: standard broke off the antenna ,put the connectors and soldered the cable to the antennas.TP-link WN822N
TP-link WN822ND
TP-link WN822N
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In telecommunications, a collinear antenna array is an array of dipole antennas mounted in such a manner that the corresponding elements of each antenna are parallel and collinear, that is they are located along a common line or axis.
Collinear arrays of dipoles are high gain omnidirectional antennas. A dipole has an omnidirectional radiation pattern when in free space and not influenced by any other conductors in that it radiates equal radio power in all azimuthal directions perpendicular to the antenna, with the signal strength dropping to zero on the antenna axis. The purpose of stacking multiple dipoles in a vertical collinear array is to increase the power radiated in horizontal directions and reduce the power radiated into the sky or down toward the earth, where it is wasted. They radiate vertically polarized radio waves. Theoretically, when stacking idealised lossless dipole antennas in such a fashion, doubling their number will produce double the gain, with an increase of 3.01 dB. In practice, the gain realized will be below this due to imperfect radiation spread and losses.
in HF, VHF and UHF
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