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Admin

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Everything posted by Admin

  1. ,,,OK, see this,,, sma.zip ...but you must to import in HFSS...!!
  2. yes,you can try...!!!
  3. you tried this version ... ??
  4. And how you welded biquads inside Sitecom xn 300 wml3600?
  5. working well
  6. This is a topic that I have initiated since 2010,on other forums. A cardioide is the caustic of a circle when a light source is on the circumference of a circle.We can see this on a conical cup partially filled with cofee.When a light is shining from a distance and at a angle equal to the angle of the cone,a cardioide will be visible on the surface of the liquid. A metal ring can also be used to create a cardioide Following these images, I agreed antenna with patches, having such a geometrical configuration A simple patch antenna... and a panel antenna
  7. ,,,a single way...
  8. The design technique and the measured results of a planar linearly polarized subarray composed of four EMC patches are presented. A schematic layout of the four radiating elements is shown. The design and optimization of the feeding network were carried out by using a dedicated software package and experimental results in order to obtain a fine tuning of strip dimensions. Good performance in terms of gain and efficiency is shown.
  9. another simple patch antenna for offset dish;\\\\
  10. Alfa AWUS1900 is a new quad antenna 802.11ac Wi-Fi USB receiver boasting router connection speeds of up to 1900 Mbps (1300 Mbps for 5 Ghz + 600 Mbps for 2.4 Gz). It is compatible with Microsoft Windows 7, 8/8.1, and Windows 10. This connects to your computers USB port with enclosed USB 3.0 cable and boosts the Wi-Fi performance of that specific PC. This is not a router or repeater.
  11. IRG, ? ??? ???? ????? ???????...??? ??????? ???????? ??????? ??????....76??? ? ??? ???????? ????????????? ? ????????? ??????? ?????
  12. OK, tomorrow I will try to make it to the desired frequency simulation
  13. Compound Parabolic Concentrators (CPCs) are designed to efficiently collect and concentrate distant wavelength sources. With acceptance angle options of 25° and 45°, our CPCs are able to accommodate a variety of wavelength sources and configurations. Geometric construction of a CPC curve
  14. Satellite Helix with Patches
  15. The easiest way is by using two pigtails...
  16. Another construction to enlarge frequency band in 3G...
  17. ,,,and a dipole beer-can..
  18. Franklin Cantenna
  19. DVB-T Cantenna
  20. The quad antenna consists of a square loop of wire as shown in the figures below . The side of the loop is approximately lambda/4 in length and it is normally fed with 50-- 75*lambda coaxial cable at the point shown. The loop can be mounted with a diagonal vertical and fed at the bottom corner; in either case the feed point is a current maximum and the performance is identical. In the configuration shown, the polarisation is horizontal. If fed from the side of the loop, the polarisation will be vertical.
  21. A mimo antenna has two ports, one inputs and one output, by definition. The isolation is a measure of how well the ports are separated from each other in terms of unwanted signal coupling. 30dB isolation is in most cases considered 'high isolation'. Leakage or feed thru is the terminology of the unwanted signal coupling.
  22. When an antenna has 2 ports the port-to-port isolation and cross-polarisation discrimination can be specified. Antennas with 2 or more ports are typically used in technologies that deploy MIMO (multiple-input multiple-outputs). MIMO is a technique that is used to improve the data throughput of a system by making use of multiple channels at the same carrier frequency each of which carries separate data. For this reason, the port-to-port isolation and cross-polarisation discrimination are parameters that should be published. The port-to-port isolation is defined as the ratio between the power fed into one port of the antenna to the power received at the other port. It is therefore an important parameter to consider if the antenna is to be used with a transmitterthat makes use of MIMO. Ideally one would like the two ports to be completely independent (infinite isolation) because then what ever signal is transmitted from one port will not interfere with the signal transmitted from the other port. The lower the isolation, the more interference there will be between the two transmitted signals