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Admin

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  1. 92cm and not 920cm,,,and without too many pictures that don't make sense...!!!
  2. """" I live in a region with a lot of air and there is no signal below 5 meters."""",,,,,,this is a shame...!!!!
  3. ,,,the Curtain panel antenna for the frequency of 1800 MHz is excessively large (658x474x24mm) Conclusion: panel antennas Curtain is good for 5 GHz frequency, take parabolic antennas with an irradiator for 1800 MHx frequency.
  4. ,,, type of antenna,not very easy to produce , but with good results in circular polarization. Between the patch and irradiated put plate of polystyrene or polyurethane...
  5. Interesting, very interesting program to check network security in linux and windows:http://sniff.su/download.htmlhttp://intercepter-ng.blogspot.ru/20...1_archive.html
  6. A new small, low-profile and light-weight helical antenna element was designed for 2,1-2,4GHz-band communications. The novelty of the antenna is that its input impedance matching has been improved by adjusting the copper strip matching stub, while its circular polarization performance has been enhanced by changing the parasitic radiation patch loaded in the front of the antenna.
  7. 2x2 antenna panel that shows a circular polarization and operates in 3G frequency band...
  8. 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
  9. Here are some quick notes about the parabolic type dish antennas you might find. The actual antenna is a normal half wave dipole with an integrated balun and is located inside the sealed plastic cover. The mesh screen is the reflector which concentrates the RF energy onto the antenna. That is how dish antennas increase the received or transmitted power level. Also, wireless cable service providers frown upon giving away their used dishes as they think you're going to steal cable service.
  10. This project is dedicated to Doyt R. Hoverman (b.1913), the man who created and did the early work on the Hoverman antenna at a time when antenna modeling programs did not exist. His work would have been entirely created and improved by field testing, trial and error, and with a great amount of calculation without the benefit of electronic devices. Without his efforts, our work would not have been. Doyt Hoverman passed away in December, 1989 at Van Wert, Ohio, USA. Technical data Simulation With insulating spacers
  11. We've shared tons of ways to boost your home Wi-Fi, but if you need something a bit more powerful, this DIY antenna can stretch your wireless network much further. Simply use this sardine cane box from which the cover is used for patch antenna... This box is ideal for the construction of antennas in the 5 GHz band and beyond...
  12. A cantenna ( blending the words can and antenna) is a homemade directional waveguide antenna, made out of an open-ended metal can. Cantennas are typically used to increase the range of (or discover) wi-fi networks. Although some designs are based on a can, this tube is too narrow to increase the 2.4 GHz signal by a useful amount, although at 5 GHz it would be about the right size. However, a cantenna can be made from various cans or tubes of an appropriate diameter. Some designs include a pole mount to elevate the cantenna.
  13. By the addition of directors rings at a cantenna, can get better directivity...
  14. ,,, this would be about the frequency of 1800 MHz...
  15. A set of equipment for mobile Internet in the country or in the office. Desktop MiMo antenna of the domestic manufacturer Antex stabilizes the signal in the room, which increases the speed of the Internet connection. The maximum gain of the MiMo antenna is 2*9dBi. The kit includes a universal modem that installs SIM cards of any mobile operators. The modem is connected installed inside the antenna from which the cable is output (included 10 meters) and connected to the USB connector of the router. The router, in turn, distributes the Internet over a Wi - Fi network at a frequency of 2.4 GHz. Additionally, it is possible to connect up to 4 devices without a Wi-Fi module, via Ethernet wires (RG-45). The equipment package supports all 2G / 3G/4G LTE networks using LTE Cat technologies.4 at mobile connection speeds up to 150Mbps. ,,,the first option...easier to execute...!!! Huawei E3372 Modem with Router and Antenna Petra Lite Home Boxhuwei 3G/4G Modem + Wi - Fi Router
  16. ,,,,and where is the feed point located...??? ,,, these would be the results with feeding points at 90 degrees... ,,,it seems that the isolation between the ports is quite good...
  17. Hamza, what do you mean by asymmetrical cuts(-3,-4)...???
  18. ,,,this would be the simulation...follow the dimensions....!!! ,,,and as 'miloudsatdz' wants...
  19. Because this site is not completed in real operation, it is recommended to replace the current Theme2(Default) with Default, as you can see in the picture below... Default theme it looks like this...
  20. Can you guess what's inside it?
  21. ,,,congratulations....!!! ,,,can you also give some dimensions...???!!!
  22. ,,,it's simpler that way...and it's broadband (0.75---0.865)MHz....
  23. miloudsatdz,,, these would be the results of your antenna... ,,,by the way, for which frequency do you want the antenna to work...???
  24. Double Patch Regular Polyhedron The rectangle 94*68 mm, the sides of the cutting plane 28 and 16 mm rack Diameter 6 mm. each patch has an input impedance of 100 Ohms, between 0.5 *Lambda of the connecting line. Obtained by parallel connection of 50 Ohms. And cool chart SWR the broadband is a patch in the form of an pseudo- ellipse with eccentricity 0.8, 2 Patches of narrow-band, but with the increase of the gap band of operating frequencies increases at 0.1 Lambda reaches 10/11 %. When band gaps, increases the ability of multi-mode excitation. With the increase of the gap increases and the value of the input impedance. Based on this information, can built a patch with a gap from the reflector is 15 mm. The line length is 0.5 L, so its width is not critical. In this project its width is about 2 mm d = 1 mm The gap( between the surfaces) 15 mm width to reflector Conn. line 13 mm. the distance between the two coherent emitters choose, usually based on two criteria. Or the maximum gain, then it's 1 lambda or a little more. Or at a minimum side lobes, then it is less than lambda, about 0.7/0.8.