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333 Threads found on edaboard.com: Antenna Polarization
Hello , the Sinuous antenna that i have built is dual polarized because it hase two orthogonal dipole feed,i have attached the diagram and farfield results of the simulation. this antena is dually polarized, i have used ludwig 3 on vertical /horizontal as shown in the attached photos. how can i interpret the ludwig 3 diagram and get the direct
Hello Is it possible to design a polarization conversation metasurface antenna using MATLAB ? I want to design Metasurface antenna using only MATLAB. Thanks in advance
Hi, After designing an antenna in HFSS. How can I be shure if my design is well adapted? For exemple, if I designed a patch antenna with microstrip line of 50 ohms, should I go simulate to see if the antenna impedance is equal to 50 ohms for all the wanted frequencies ? What else should I check? Thank you
in order to measure the radiation pattern of an antenna both the antenna should be of same polarization. 1. how to determine the polarization of the antenna. can you tell by looking at an antenna. 2. if in datasheet it's written only linear then which type of (...)
First the element should be right-hand or left-hand circular polarization. Then design the feeding network for the array. You could follow the example in the antenna books or papers.
what advantage does vertical polarization have? None. The signal will be subject to farady rotation as it passes through the ionosphere to the satellite. The use of a vertical whip type antenna is about the best compromise for this application. The direction to the satellite or rescue aircraft is not known so using an antenna that has an (...)
hello all, Is there any way we an say something about polariztion of an antenna just by looking at the 3-D radaition pattern. ?
If you see the anatomy of a LNA sitting at the top of the dish antenna, you will notice two short wire segments (perpendicular to each other) that act as antenna. Now you have the following possibilities: 1. None of them get any voltage- there is no signal; 2. The horizontal one gets signal but the vertical one does not: the signal is having hor
A λ/2 dipole antenna at 92 MHz is about 1.6m long. You need to have at least 2λ distance between antennas to see any polarization differences (greater than 6.4m in your case). When you get all these requirements you should see about 20dB variation in the path loss (or gain) when you rotate the dipole antenna from (...)
You cannot do this polarization test if the antenna height of both dipoles is less than 2λ (1.6m in your case). For vertical polarization might be a challenge to reach this height in a normal chamber. At these frequencies is better to do the test in open air using wooden antenna supports. And if is nice weather you (...)
hello Would you please tell me how I can plot Eco and Across of an antenna with hfss? EL3x and EL3Y give the ratio betwwen them but I want to get the E co en cross separately to compare them with ADS Thk you for your help
I would propose a slotted patch antenna with circular polarization, on both sides, avoiding in this way the H to V polarization mismatch.
hi, E field is electrical field and H field is magnetic field. i would say most relevant gain and efficiency. from gain you got to know directivity and polarization of an antenna. from efficiency you know how much radiated power over input power for an antenna. E field plus H field with other parameters involve creates force on (...)
There are various reasons why received UHF field strength can't give a reliable distance indication 1. antenna directivity and polarization 2. multi-path propagation 3. wave diffraction, reflection and absorption by obstacles It can give a rough zone information, but not more. You can probably improve the results by using antenna (...)
On designing an antenna in hFss how could one come to know its type of polarization? is there any plot which that could help to conclude its type of polarisation ?
polarization refers to the direction of the electric field. An antenna receptive (maximum response) to the particular field is co-polarized. Radiation with the electric field rotated 90 degrees is cross polarized. Stutzman has published a book, polarization in Electromagnetic Systems that goes into significant detail on the subject. (...)
I am trying to make a reconfigurable patch antenna but have trouble with simulation. The first patch should be at 2.4GHz and then the first + second patch should be 2.1GHz. Theoretically the frequency should decrease from 2.4 to 2.1GHz when the second patch turns on (I.e when the length of patch gets longer). However the frequency actually i
You can get some insight by reading about waveguides and radiating slots, for example at antenna-theory website: It is easier to me to understand it this way, where and why magnetic and electric fields are depending on surfac
For the radiation pattern of antenna, I took polar plot with Phi=0 and theta varying to get E-copolar and phi=90 and theta varying for E-cross(X-pol) polarization. How should I plot H-co-polarization and H- cross polarization from CST results?
Hello, Please I need to know how I can determine the E plane And H plane to plot the radiation pattern of an antenna simulated with ADS? For the radiation pattern, some articles provide the E theta and E phi for the XY XZ YZ planes/ or the E-plane, H plane /or the co-polarization and cross-polarization. For the Ethet Ephi curves, (...)


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