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Admin

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  1. 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.
  2. I have tried many times to make a simulation at this antenna but I was never satisfied with its results. So I made a change to it, and I got some good results, especially with regard to the frequency bandwidth
  3. 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
  4. and here are the results of the quasi-bowtie antenna... ,,,, by adding a reflector....!!!
  5. ,,,,yes, of course, but some dimensions have to be modified...!!!! ,,,, and I think you're right, a 75 ohm coaxial cable should be used and I think I'll make a simulation for this impedance ...!!!
  6. Panel antenna AX-2020P designed for use in set c 3G modems (routers). Antenna type – common-mode strip grating. Recommended for use at the boundaries of the service area, with a very weak and unstable the level of 3G signal and also in cases when it is necessary to use a large amount of cable between the antenna and the modem. Electrical characteristics Operating frequency range, MHz=1900÷2180 Gain, dBi=19-20 The width of the days in H-plane, degrees=6÷18 Days width in E-plane, degrees=16÷18 The sidelobe level, dB, not more=-13 The ratio of forward/back, dB=24 Input impedance, Ohm=50 SWR in the frequency range, not more=1,5 Permissible power watts=10 Polarization=vertical/horizontal/inclined Mechanical characteristics Weight with mount, g=3350 Overall dimensions without mounting, m=0,45х0,45х0,05 Connector=N-female Antenna material=steel, galvanized steel Protective coating=powder polymeric paint Material of protective box=ABS+polycarbonate
  7. ,,,yes ,it is for 650---950 MHz...!!!
  8. Electrical characteristics Operating frequency range, MHz 1900÷2180 Gain, dBi 19-20 The width of the days in H-plane, degrees 16÷18 Days width in E-plane, degrees 16÷18 The sidelobe level, dB, not more -13 The ratio of forward/back, dB 24 Input impedance, Ohm 50 SWR in the frequency range, not more 1,5 Permissible power watts 10 Polarization vertical/horizontal/inclined Mechanical characteristics Weight with mount, g 3350 Overall dimensions without mounting, m 0,45х0,45х0,05 Connector N-female Antenna material steel, galvanized steel Protective coating powder polymeric paint Material of protective box ABS+polycarbonate
  9. A microstrip fed ultra-wideband (UWB) antenna with different band rejection techniques is presented. The designed antennas consist of a defected ground plane with an elliptical slot and elliptical shaped radiating element. The measured and calculated impedance bandwidth of the proposed antenna ranges from 2 to 5 GHz for a return loss (S11) less than 10 dB. Also, it has a relatively stable radiation patterns over its whole frequency band of interest hermaes.cst
  10. „, for simplification in construction it can also be so... ,,,or so...
  11. ,,, okay, I wish you success ... !!!
  12. This page details the construction of a biquad antenna. The biquad antenna is easy to build, and provides a reliable 11dBi gain, with a fairly wide beamwidth. an antenna geometry of ideal biquad...
  13. RC-Concepts,congratulations....!!!!
  14. ,,, and finally, the latest UWB batwing antenna model is optimized...!!!
  15. ,, yes, you can ... !!!
  16. ,,,,the angle it"s 60 degree>..1!!
  17. ", yes, other directors can be added, but other simulations have to be done......!!!
  18. ,,,batwing with cut corners...
  19. By adding a dielectric rod waveguide (DRW) to the feed, it can increase the bandwidth of the frequency up to 3.5GHz,,,, ,,,your cantenna is different from mine..!!! ,,,, but you have to give me the dimensions to your cantenna...!!!
  20. 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.
  21. ,,, antenna BDM-2 for 1800 MHz... ,,, constructive details....
  22. 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...