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Admin

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  1. I followed this forum and tried to do a simulation for this frequency (L-band 1500-1700 MHz)....for last mystery of maritime communication-satellite Inmarsat!!! https://www.radioscanner.ru/forum/topic50990-11.html
  2. Antennas are essential wherever wireless communication required. They are the indispensable link between the contained signal and the “ether”. CST provides a variety of tools for each stage of the antenna design flow to study and improve your design. Antennas are used in a vast variety of applications, and thus take come in a vast variety of form factors and radiation mechanisms. The range of simulation methods in CST MWS allows the engineer to choose the best technique for each application. The transient solver could be best for wideband or planar antennas, the frequency domain solver may be more suitable for electrically small antennas, while the integral equation solver can efficiently simulate electrically large or wire antennas. Antennas never operate in isolation, but are attached to a feed network. CST DESIGN STUDIO™ (CST DS) allows the hybrid co-simulation of the effect of an attached circuit on the antenna performance. Installation of an antenna in a device or on a platform makes its analysis even more complex. The System Assembly and Modelling framework in CST DS allows the user to set up coupled simulations which can combine different solvers automatically by making use of field sources. Finally, powerful automated post-processing allows you to extract every magnitude of interest for an antenna designer – nearfield plots, SAR, phase center, directivity or farfield gain for single antennas or arrays - and to process those data further for use in parameter sweeps or optimizations in order to improve the performance of your design. Few pictures started...
  3. Single band IEEE 802.11 a/n standard High gain patch antenna Frequency (MHz) : 5150-5825 Peak Gain (dBi) : 10.0 VSWR : 2.0 : 1 Dimension (mm) : 76 x 72 x 3.8 Connector : IPEX MHF I Cable Length (mm) : 50 (customized) It seems to work well on the 5.6 GHz frequency.
  4. ,,,,where did you get this project from...???
  5. ,,,must add ground to coaxial cable...!!!!
  6. 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.
  7. Is a Russian patch-antenna for its positioning in the focus of a parabola offset... Antenna is broadband (2.3-2.7GHz) Bester Antenna on the offset dish It has a elliptical polarization antenna.
  8. This antenna is designed for use on mobile and stationary objects. Antenna works with any devices in the range of 790÷960/1700÷2700 MHz (USB modems, repeaters, amplifiers, etc.). Thanks to a wide band antenna capable of operating in the most skorostnyh the mobile communication standards, with a maximum Internet speed up to 300 MB/s For the implementation of the MIMO mode, it is recommended to use two such antennas. Light weight, great aerodynamic shape and use of rare earth magnets in the magnetic system allow to keep the antenna on the roof of the car at speeds above 150 km/h! The electrical characteristics of the antenna Magnita-1 Operating frequency range, MHz 790-960/1700÷2700 Gain (excluding cable loss, when placing the antenna on the roof of the car), dBi 2÷4 / 6.0÷7.0 Gain (excluding cable loss, when placing the antenna in free space), dBi Of 2.0÷3.0 The width of the days in H-plane, degrees 360 Days width in E-plane 3dB hail 15÷45 The elevation angle of the main maximum of the radiation pattern when placing the antenna on the car roof, C 5÷25 Input impedance, Ohm 50 SWR in the frequency range, not more 1,6 Permissible power watts 10 Polarization vertical The mechanical characteristics of the antenna Magnita-1 Weight with cable g 240 Dimensions without cable, m 0,10 x 0,10 x 0,08 The force of attraction of the magnetic system (when the thickness of the metal roof of the car - 0.7 mm), N 50÷55 Connector SMA-male / on-demand The material of the radiator tin tin Material samango casing ABS + polycarbonate
  9. I think the base is magnetic for attaching to the hood of the car...!!!
  10. I don't think so, anyway the base cone is electrically connected to the reflector.
  11. ,,,for those who want to optimize this antenna... Magnita.cst
  12. ,,,yes,it could be covered with a plastic... ,,,sorry for the mistake, D1=70 mm
  13. 4G antenna BDM-2 is a wave channel with crack initiation, and the delay line is made of sequentially installed disk elements. Compared to the classical antenna BDM , new directional antenna BDM-2 is: More gain; Improved radiation pattern; More stable operating parameters; Greater reliability; Superior mechanical characteristics. Due to the small weight, a small sail and streamlined shapes, the antenna BDM-2 can be used in almost any climatic conditions. And corrosion-resistant materials of the antenna will ensure a long maintenance-free operation even in the marine climate. Specifications 4G/LTE antenna BDM-2: Antenna type Directed Beam width H/V ° 20/20 Frequency range, MHz 2600 MHz Polarization Linear orthogonal Gain, dBi 15-17 DBi depending on frequency of execution The CWS in RAB. the frequency range, not more 1.5 Max. input power,W 50 The weight of the antenna package, gr. 910 Input impedance, Ohm 50 Overall dimensions, mm Ф90 x 500 The operating temperature range, °C -40 .. +60 Performance All-weather, all - Connector (on the case) N-female x2
  14. D1=99 mm ,,,and because I saw that you like square patches...
  15. 'PATCH' irradiator for an axial-symmetric antenna with a diameter of 67 cm and f/D=0.43 for receiving signals from the satellite AO-40
  16. It's pretty simple, you just post there what's here.
  17. ,,,,papagayor....I think your post should be here... Can you move it there...???
  18. You need something like this....
  19. ,,yes,6---8 mm...!!!! ,,,but I think a panel antenna would be better...!!!
  20. ,,,rana75,show what biquad you have...!!
  21. Clanon, the boy has a biquad antenna...!!!