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Admin

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  1. N-type socket / female N-P245 instrument flanged RF connector, for soldering, extended dielectric, 50 ohms The N-Type connector was developed in 1940 at Bell Labs by Paul Neill, and the" N " in the connector's name appeared due to the first letter of his last name. Initially, the connector was developed for frequencies up to 1 Gigahertz, but later its potential for use was revealed at very high frequencies reaching 11 GHz, and thanks to the subsequent refinement by Julius Botka of Hewlett-Packard, the connector was used in systems operating at frequencies up to 18 GHz and can rightfully share the glory of one of the most popular devices in the world today. the most common high - frequency connectors with its predecessor-UHF. The connector has not found much recognition among radio amateurs and civilian users, but it has gained constant popularity among professionals and is used in mobile communication infrastructure, wireless data transmission (WiFi), paging and cellular communication systems, as well as in cable TV networks, standardized according to the MIL-C-39012 protocols. sma N-P245.cst
  2. Can you post technical details for your antenna...??? ,,,possibly CST-file....??!!!
  3. Antenna for digital TV is no different from antennas for analog TV. choose from a large Ku. Specify which channels are broadcasting UHF. the antenna should cover the range(500-800MHz). This is a realization of VodkaMan friend. Some improvements for this type af patch antenna UHF: Mounting studs M6 with nuts and washers. Line powering with ramps instead of fillets (I think smarter). Reflector rectangular 340mmx290mm, the distance between studs 120mm. Patch - 208mmx208mm truncated cylinder 214mm installed at a height of 65 mm (the gap). Director - 173.6 mm in diameter, at a height of 95.5 mm from the reflector (the gap). Material - galvanized 0.5 mm.
  4. ,,,okay, and inside it has disc elements...???
  5. 5.8 GHz 17dB High Gain AAT Automatic Antenna Tracker for HD FPV RC Racing Drone Product Description: Model: 5.8 GHz 17dB AAT Automatic Antenna Tracker Frequency Range: 5150-5950mhz Input impedance: 50Ω VSWR at surface level: <1.5 Antenna Gain: 17dBi HPBW (3dB): 16 ° H-plane 38 ° E-plane F/B:> 20 (dB) Max Power: 50W Polarization: Vertical polarization Connector Type: RP-SMA Static protection: DC ground Antenna Length (AAT): 30 cm Size: 136*68*10 mm Weight: 57g (Manual)/47g (AAT) Package included 1x5. 8 GHz 17 dB high gain
  6. ,,,this is...
  7. Can be made of a pcb board and a metal reflector
  8. ,,,goto Modeling>History List>delete all farfield ,,,install another frequency>>>
  9. When you increase the frequency range, you must delete the old frequency range and install the new one."
  10. ,,,another type of Bester Antenna ... Article numberAX-1500 OFFSET BOX Input impedance, Ohms50 Overall dimensions, m0, 145x0, 145x0, 154 Permissible power, W10 Protective coatingpowdered polymer paint SWR in the operating frequency range, max.1,3 Weight300 Casing materialABS+Polycarbonate Irradiator materialgalvanized steel Polarisationleft\right circular map Operating frequency range, MHz1525 - 1575 ConnectorsSMA-male on flexible cable Resulting gain (and bottom width) for different dish diameters25,6dBi ; 16,8dBi ; 17,6dBi ; 21,1dBi ; 24,3dBi The resulting gain and level width of the radiation pattern is 3dB0.55 m 16.8 dBi 23 gr. 0.6 m 17.6 dBi 21 gr. 0.9 m 21.1 dBi 14 gr. 1.3 m 24.3 dBi 9 gr. 1.5 m 25.6 dBi 8 gr. Native gain, dBi10 Width of the DN lobes in the E-plane (horizontal), °110÷120 Width of the DN lobes in the H-plane (vertical), °110÷120
  11. ,,,inside(section) of the connectors...
  12. ,,,dimensions are shown in the images above...!!!
  13. Usually a Loop antenna exhibits a higher gain than a Yagi antenna with the same number of elements
  14. In this tutorial you will learn how to simulate antenna devices in CST-Studio...https://space.mit.edu/RADIO/CST_online/mergedProjects/EXP_HF/examplesoverview/patch_antenna.htm
  15. ECO, THE IMAGES ARE NOT VISIBLE...!!! "For how big the reflector is, the antenna gain is not that great."
  16. I finally managed to do a simulation with this antenna....
  17. 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.
  18. Featured outdoor antenna products which enhance your reception of 4G signal from the tower to your location. All antennas featured are easy to install and it is with the connectors required to connect to your existing modem.
  19. You have many choices in selecting an antenna for a Wi-Fi wireless network adapter for your computer. If you use the antenna that came with the adapter and experience weak reception and slow Wi-Fi network performance, unscrew the stock antenna and replace it with a higher-gain model. Wi-Fi equipment makers rate compatible antennas in units called dBi. The higher the dBi rating, the stronger the antenna’s reception. Isotropic Antenna Wi-Fi antennas obey the same laws of nature that govern all other radio antennas. The isotropic radiator is the simplest theoretical radio antenna. It is a point source that produces radio waves equally in all directions. However, the isotropic antenna is just an idea; you cannot actually make one because it violates fundamental laws of physics -- thus, it is only theoretical. However, it can serve as a standard by which you can measure other antennas: the decibels --db -- compared to an isotropic radiator. Antenna Gain Every antenna has gain, a quality by which it increases the strength of a radio signal. Two main factors affect an antenna’s gain: shape and size. Shape influences the antenna’s directionality, or how it receives radio waves from different directions. The wavelength of the radio waves determine the radio’s size: an antenna receives signals best if its size matches the size of the radio waves, or is one-half or one-quarter the wavelength. For most uses, the better the antenna design, the higher the gain. Decibels When radio engineers compare the gain of antennas, they use the decibel system. A decibel is ten multiplied by the common logarithm of the ratio of two numbers. For example, if you compare 1 milliwatt and 10 milliwatts of radio power, you divide the second by the first and obtain 10. Taking the common log of that gives you 1, and multiplying it by 10 gives 10. The second amount is larger than the first by 10 decibels, or 10 dB. dBi Rating The dBi rating for a Wi-Fi antenna compares its performance to an isotropic antenna. If the isotropic antenna produces 1 milliwatt of radio wave power and the Wi-Fi antenna produces 2 milliwatts, that is 10 * log(2) or 3 dBi. If another antenna produces 3 milliwatts, that is 10 * log(3) or 4.8 dBi. Though the isotropic antenna doesn’t exist, it still serves as a reliable way to compare Wi-Fi antennas. You can compare the dBi ratings of the two antennas and choose one with the better dBi rating.
  20. Model wireless network USB adapter TL-WN721N Lite N series supports IEEE 802.11 g and IEEE 802.11 b. It works great with all devices of the standards 802.11 b/g/n. An automatic detection of speed allows the wireless network USB adapter TL-WN721N to transfer data at high speeds (maximum capacity to 150Мбит/s).
  21. Bottom of a circular metal box can build a simple antenna with an elliptical radiator...